NEC UPD780824A

Preliminary User’s Manual
µPD780828A Subseries
8-bit Single-Chip Microcontroller
µPD780824A
µPD780826A
µPD780828A
µPD78F0828A
Document No. U16504EE1V1UD00
Date Published January 2003
 NEC Corporation 2003
Printed in Germany
NOTES FOR CMOS DEVICES
1
PRECAUTION AGAINST ESD FOR SEMICONDUCTORS
Note:
Strong electric field, when exposed to a MOS device, can cause destruction of the gate oxide and
ultimately degrade the device operation. Steps must be taken to stop generation of static electricity
as much as possible, and quickly dissipate it once, when it has occurred. Environmental control
must be adequate. When it is dry, humidifier should be used. It is recommended to avoid using
insulators that easily build static electricity. Semiconductor devices must be stored and transported
in an anti-static container, static shielding bag or conductive material. All test and measurement
tools including work bench and floor should be grounded. The operator should be grounded using
wrist strap. Semiconductor devices must not be touched with bare hands. Similar precautions need
to be taken for PW boards with semiconductor devices on it.
2
HANDLING OF UNUSED INPUT PINS FOR CMOS
Note:
No connection for CMOS device inputs can be cause of malfunction. If no connection is provided
to the input pins, it is possible that an internal input level may be generated due to noise, etc., hence
causing malfunction. CMOS devices behave differently than Bipolar or NMOS devices. Input levels
of CMOS devices must be fixed high or low by using a pull-up or pull-down circuitry. Each unused
pin should be connected to V DD or GND with a resistor, if it is considered to have a possibility of
being an output pin. All handling related to the unused pins must be judged device by device and
related specifications governing the devices.
3
STATUS BEFORE INITIALIZATION OF MOS DEVICES
Note:
Power-on does not necessarily define initial status of MOS device. Production process of MOS
does not define the initial operation status of the device. Immediately after the power source is
turned ON, the devices with reset function have not yet been initialized. Hence, power-on does
not guarantee out-pin levels, I/O settings or contents of registers. Device is not initialized until the
reset signal is received. Reset operation must be executed immediately after power-on for devices
having reset function.
2
User’s Manual U16504EE1V1UD00
•
The information in this document is current as of 28.01, 2003. The information is subject to change
without notice. For actual design-in, refer to the latest publications of NEC Electronics data sheets or
data books, etc., for the most up-to-date specifications of NEC Electronics products. Not all products
and/or types are available in every country. Please check with an NEC sales representative for
availability and additional information.
•
No part of this document may be copied or reproduced in any form or by any means without prior
written consent of NEC Electronics. NEC Electronics assumes no responsibility for any errors that
may appear in this document.
•
NEC Electronics does not assume any liability for infringement of patents, copyrights or other
intellectual property rights of third parties by or arising from the use of NEC Electronics products
listed in this document or any other liability arising from the use of such NEC Electronics products.
No license, express, implied or otherwise, is granted under any patents, copyrights or other intellectual
property rights of NEC Electronics or others.
•
Descriptions of circuits, software and other related information in this document are provided for
illustrative purposes in semiconductor product operation and application examples. The incorporation
of these circuits, software and information in the design of customer's equipment shall be done
under the full responsibility of customer. NEC Electronics no responsibility for any losses incurred by
customers or third parties arising from the use of these circuits, software and information.
•
While NEC Electronics endeavors to enhance the quality, reliability and safety of NEC Electronics
products, customers agree and acknowledge that the possibility of defects thereof cannot be eliminated
entirely. To minimize risks of damage to property or injury (including death) to persons arising from
defects in NEC Electronics products, customers must incorporate sufficient safety measures in their
design, such as redundancy, fire-containment and anti-failure features.
•
NEC Electronics products are classified into the following three quality grades: “Standard”, “Special”
and “Specific”.
The "Specific" quality grade applies only to NEC Electronics products developed based on a customerdesignated “quality assurance program” for a specific application. The recommended applications of
NEC Electronics product depend on its quality grade, as indicated below. Customers must check the
quality grade of each NEC Electronics product before using it in a particular application.
"Standard":
Computers, office equipment, communications equipment, test and measurement
equipment, audio and visual equipment, home electronic appliances, machine tools,
personal electronic equipment and industrial robots.
"Special":
Transportation equipment (automobiles, trains, ships, etc.), traffic control systems,
anti-disaster systems, anti-crime systems, safety equipment and medical equipment
(not specifically designed for life support).
"Specific":
Aircraft, aerospace equipment, submersible repeaters, nuclear reactor control systems,
life support systems and medical equipment for life support, etc.
The quality grade of NEC Electronics products is “Standard” unless otherwise expressly specified in
NEC Electronics data sheets or data books, etc. If customers wish to use NEC Electronics products in
applications not intended by NEC Electronics, they must contact NEC Electronics sales representative
in advance to determine NEC Electronics 's willingness to support a given application.
Notes:
1.
" NEC Electronics" as used in this statement means NEC Electronics Corporation and
also includes its majority-owned subsidiaries.
2.
" NEC Electronics products" means any product developed or manufactured by or for
NEC Electronics (as defined above).
M8E 02.10
User’s Manual U16504EE1V1UD00
3
Regional Information
Some information contained in this document may vary from country to country. Before using any NEC
product in your application, please contact the NEC office in your country to obtain a list of authorized
representatives and distributors. They will verify:
•
Device availability
•
Ordering information
•
Product release schedule
•
Availability of related technical literature
•
Development environment specifications (for example, specifications for third-party tools and
components, host computers, power plugs, AC supply voltages, and so forth)
•
Network requirements
In addition, trademarks, registered trademarks, export restrictions, and other legal issues may also vary
from country to country.
NEC Electronics Inc. (U.S.)
Santa Clara, California
Tel: 408-588-6000
800-366-9782
Fax: 408-588-6130
800-729-9288
NEC Electronics (Europe) GmbH
Duesseldorf, Germany
Tel: 0211-65 03 01
Fax: 0211-65 03 327
Sucursal en España
Madrid, Spain
Tel: 091- 504 27 87
Fax: 091- 504 28 60
Succursale Française
Vélizy-Villacoublay, France
Tel: 01-30-67 58 00
Fax: 01-30-67 58 99
Filiale Italiana
Milano, Italy
Tel: 02-66 75 41
Fax: 02-66 75 42 99
NEC Electronics Hong Kong Ltd.
Hong Kong
Tel: 2886-9318
Fax: 2886-9022/9044
Branch The Netherlands
Eindhoven, The Netherlands
Tel: 040-244 58 45
Fax: 040-244 45 80
NEC Electronics Hong Kong Ltd.
Seoul Branch
Seoul, Korea
Tel: 02-528-0303
Fax: 02-528-4411
Branch Sweden
Taeby, Sweden
Tel: 08-63 80 820
Fax: 08-63 80 388
United Kingdom Branch
Milton Keynes, UK
Tel: 01908-691-133
Fax: 01908-670-290
NEC Electronics Singapore Pte. Ltd.
Singapore
Tel: 65-6253-8311
Fax: 65-6250-3583
NEC Electronics Taiwan Ltd.
Taipei, Taiwan
Tel: 02-2719-2377
Fax: 02-2719-5951
NEC do Brasil S.A.
Electron Devices Division
Guarulhos, Brasil
Tel: 55-11-6465-6810
Fax: 55-11-6465-6829
4
User’s Manual U16504EE1V1UD00
Preface
Readers
This manual has been prepared for engineers who want to understand the
functions of the µPD780828A Subseries and design and develop its
application systems and programs.
µPD780828A Subseries:
µPD780824A(A), µPD780826A(A), µPD780828A(A), µPD78F0828A(A),
µPD780824A(A1), µPD780826A(A1), µPD780828A(A1),
µPD780824A(A2), µPD780826A(A2), µPD780828A(A2)
Purpose
Organization
This manual is intended for users to understand the functions of the
µPD780828A Subseries.
The µPD780828A subseries manual is separated into two parts: this manual
and the instruction edition (common to the 78K/0 series).
µPD780828A
Subseries
This Manual
•
•
•
•
Pin functions
Internal block functions
Interrupt
Other on-chip peripheral functions
78K/0 series
User’s Manual
Instruction
• CPU functions
• Instruction set
• Explanation of each instruction
How to Read This Manual
Before reading this manual, you should have general knowledge of electric
and logic circuits and microcontrollers.
• When you want to use this manual as the manual for (A) products, (A1) products,
and (A2) products:
→ Only the quality grade differs between (A), (A1) and (A2) products.
Read the part number as follows:
µPD780824A → µPD780824A(A), µPD780824A(A1), µPD780824A(A2)
µPD780826A → µPD780826A(A), µPD780826A(A1), µPD780826A(A2)
µPD780828A → µPD780828A(A), µPD780828A(A1), µPD780828A(A2)
µPD78F0828A → µPD78F0828A(A)
• When you want to understand the function in general:
→ Read this manual in the order of the contents.
• How to interpret the register format:
→ For the bit number enclosed in square, the bit name is defined as a reserved word in RA78K/0,
and in CC78K/0 and defined in the header file of hte IAR compiler.
• To make sure the details of the registers when you know the register name.
→ Refer to Appendix C.
User’s Manual U16504EE1V1UD00
5
Preface
Related Documents
The related documents indicated in this publication may include preliminary
versions. However, preliminary versions are not marked as such.
• Related documents for µPD780828A Subseries
Document No.
Document name
Japanese
English
µPD780828A Subseries User’s Manual
Planned
U16387E
78K/0 Series User’s Manual-Instruction
IEU-849
U12326E
78K/0 Series Instruction Table
U10903J
-
78K/0 Series Instruction Set
U10904J
-
• Related documents for development tools (User's Manuals)
Document No.
Document name
Japanese
Operation
EEU-809
EEU-1399
Language
EEU-815
EEU-1404
EEU-817
EEU-1402
Operation
EEU-656
EEU-1280
Language
EEU-655
EEU-1284
Operation
U11517J
-
Language
U11518J
-
Programming Note
EEA-618
EEA-1208
CC78K Series Library Source File
EEU-777
-
IE-78K0-NS-A
U14889J
U14889E
IE-78K0-NS-P04
-
IE-780828-NS-EM4
Planned
NP-80GC-TQ
-
-
RA78K Series Assembler Package
RA78K Series Structured Assembler Preprocessor
CC78K Series C Compiler
CC78K/0 C Compiler
CC78K/0 C Compiler Application Note
6
English
U13357E
SM78K0 System Simulator Windows™ Base
Reference
U15373J
U15373E
SM78K0 Series System Simulator
External part user
open Interface
U15802J
U15802E
ID78K0-NS Integrated Debugger Windows
Base
Guide
U15185J
U15185E
User’s Manual U16504EE1V1UD00
Preface
• Related documents for embedded software (User’s Manual)
Document name
78K/0 Series Real-Time OS
78K/0 Series OS MX78K0
Document No.
Japanese
English
Basics
U11537J
-
Installation
U11536J
-
Technical
U11538J
-
Basics
EEU-5010
-
EEU-829
EEU1438
Fuzzy Knowledge Data Creation Tool
78K/0, 78K/II, 87AD Series Fuzzy Inference Development Support SysEEU-862
tem-Translator
EEU-1444
78K/0 Series Fuzzy Inference Development Support System- Fuzzy
Inference Module
EEU-858
EEU-1441
78K/0 Series Fuzzy Inference Development Support System- Fuzzy
Inference Debugger
EEU-921
EEU-1458
• Other Documents
Document name
Document No.
Japanese
English
IC Package Manual
C10943X
-
Semiconductor Device Mounting Technology Manual
C10535J
C10535E
Quality Grade on NEC Semiconductor Devices
C11531J
C11531E
Reliability Quality Control on NEC Semiconductor Devices
C10983J
C10983E
Electric Static Discharge (ESD) Test
MEM-539
-
Semiconductor Devices Quality Assurance Guide
MEI-603
MEI-1202
Microcontroller Related Product Guide - Third Party Manufacturers
U11416J
-
Caution:
The above documents are subject to change without prior notice. Be sure to use the
latest version document when starting design.
User’s Manual U16504EE1V1UD00
7
Preface
Legend
Symbols and notation are used as follows:
Weight in data notation : Left is high-order column, right is low order column
Active low notation
: xxx (pin or signal name is over-scored) or
/xxx (slash before signal name)
Memory map address: : High order at high stage and low order at low stage
Note
: Explanation of (Note) in the text
Caution
: Item deserving extra attention
Remark
: Supplementary explanation to the text
Numeric notation
: Binary . . . XXXX or XXXB
Decimal . . . XXXX
Hexadecimal . . . XXXXH or 0x XXXX
Prefixes representing powers of 2 (address space, memory capacity)
K (kilo) : 210 = 1024
M (mega) : 220 = 10242 = 1,048,576
G (giga) : 230 = 10243 = 1,073,741,824
8
User’s Manual U16504EE1V1UD00
Table of Contents
Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Chapter 1
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.8
1.9
Chapter 2
Outline (µPD780828A Subseries) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Quality Grade . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Pin Configuration (Top View) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
78K/0 Series Expansion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Overview of Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Differences between Flash and Mask ROM version . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Pin Function (µPD780828A Subseries) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
2.1
2.2
2.3
Pin Function List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Non-Port Pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Description of Pin Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
2.3.1
P00 to P03 (Port 0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
2.3.2
P10 to P14 (Port 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
2.3.3
P20 to P27 (Port 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
2.3.4
P34 to P37 (Port 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
2.3.5
P40 to P47 (Port 4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
2.3.6
P50 to P57 (Port 5) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
2.3.7
P60 to P65 (Port 6) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
2.3.8
P80 to P87 (Port 8) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
2.3.9
P90 to P97 (Port 9) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
2.3.10
CTXD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
2.3.11
CRXD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
2.3.12
CCLK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
2.3.13
COM0 to COM3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
2.3.14
VLCD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
2.3.15
AVDD / AVREF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
2.3.16
AVSS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
2.3.17
RESET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
2.3.18
X1 and X2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
2.3.19
SMVDD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
2.3.20
SMVSS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
2.3.21
VDD0, VDD1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
2.3.22
VSS0, VSS1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
2.3.23
VPP (µPD78F0828A only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
2.3.24
IC (Mask ROM version only). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
2.4
Pin I/O Circuits and Recommended Connection of Unused Pins . . . . . . . . . . . . . . . 45
Chapter 3
CPU Architecture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
3.1
Memory Space . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
3.1.1
Internal program memory space. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
3.1.2
Internal data memory space . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
3.1.3
Special function register (SFR) area. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
3.1.4
Data memory addressing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
3.2
Processor Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
3.2.1
Control registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
3.2.2
General registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
3.2.3
Special function register (SFR). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
3.3
Instruction Address Addressing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
3.3.1
Relative addressing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
User’s Manual U16504EE1V1UD00
9
3.3.2
Immediate addressing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
3.3.3
Table indirect addressing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
3.3.4
Register addressing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
3.4
Operand Address Addressing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
3.4.1
Implied addressing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
3.4.2
Register addressing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
3.4.3
Direct addressing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
3.4.4
Short direct addressing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
3.4.5
Special function register (SFR) addressing . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
3.4.6
Register indirect addressing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
3.4.7
Based addressing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
3.4.8
Based indexed addressing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
3.4.9
Stack addressing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
Chapter 4
Port Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
4.1
4.2
Port Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
Port Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
4.2.1
Port 0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
4.2.2
Port 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
4.2.3
Port 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
4.2.4
Port 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
4.2.5
Port 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
4.2.6
Port 5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
4.2.7
Port 6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
4.2.8
Port 8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
4.2.9
Port 9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
4.3
Port Function Control Registers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
4.4
Port Function Operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
4.4.1
Writing to input/output port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
4.4.2
Reading from input/output port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
4.4.3
Operations on input/output port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
Chapter 5
Clock Generator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
5.1
5.2
5.3
5.4
Clock Generator Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
Clock Generator Configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
Clock Generator Control Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104
System Clock Oscillator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
5.4.1
Main system clock oscillator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
5.5
Clock Generator Operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109
5.6
Changing System Clock and CPU Clock Settings . . . . . . . . . . . . . . . . . . . . . . . . . . 110
5.6.1
Time required for switchover between system clock and CPU clock . . . . . . . . 110
5.6.2
System clock and CPU clock switching procedure . . . . . . . . . . . . . . . . . . . . . . 111
Chapter 6
16-Bit Timer 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113
6.1
6.2
6.3
6.4
16-Bit Timer 2 Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113
16-Bit Timer 2 Configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114
16-Bit Timer 2 Control Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116
16-Bit Timer 2 Operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119
6.4.1
Pulse width measurement operations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119
6.5
16-Bit Timer 2 Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123
Chapter 7
8-Bit Timer/Event Counters 50 and 51 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125
7.1
8-Bit Timer/Event Counters 50 and 51 Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . 125
7.1.1
8-bit operation modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126
7.1.2
16-bit operation modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128
7.2
8-Bit Timer/Event Counters 50 and 51 Configurations. . . . . . . . . . . . . . . . . . . . . . . 129
7.3
8-Bit Timer/Event Counters 50 and 51 Control Registers . . . . . . . . . . . . . . . . . . . . 132
7.4
8-Bit Timer/Event Counters 50 and 51 Operations . . . . . . . . . . . . . . . . . . . . . . . . . . 138
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7.4.1
Interval timer operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138
7.4.2
External event counter operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143
7.4.3
Square-wave output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144
7.4.4
PWM output operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146
7.5
Operation as interval timer (16-bit operation) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149
7.6
Cautions on 8-Bit Timer/Event Counters 50 and 51 . . . . . . . . . . . . . . . . . . . . . . . . . 153
Chapter 8
8.1
8.2
8.3
8.4
Chapter 9
9.1
9.2
9.3
9.4
8-Bit Timer 52 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 155
8-Bit Timer 52 Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 155
8-Bit Timer 52 Configurations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 155
8-Bit Timer 52 Control Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 157
8-Bit Timer 52 Operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 159
8.4.1
Interval timer operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 159
Watch Timer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 163
Watch Timer Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 163
Watch Timer Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 164
Watch Timer Mode Register (WTM) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165
Watch Timer Operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 167
9.4.1
Watch timer operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 167
9.4.2
Interval timer operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 167
Chapter 10 Watchdog Timer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 169
10.1
10.2
10.3
10.4
Watchdog Timer Functions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 169
Watchdog Timer Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 171
Watchdog Timer Control Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172
Watchdog Timer Operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174
10.4.1
Watchdog timer operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174
10.4.2
Interval timer operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 175
Chapter 11 Clock Output Control Circuit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 177
11.1
11.2
11.3
Clock Output Control Circuit Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 177
Clock Output Control Circuit Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 178
Clock Output Function Control Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 179
Chapter 12 A/D Converter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 181
12.1
12.2
12.3
12.4
A/D Converter Functions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 181
A/D Converter Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 182
A/D Converter Control Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 184
A/D Converter Operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 187
12.4.1
Basic Operations of A/D Converter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 187
12.4.2
Input voltage and conversion results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 188
12.4.3
A/D converter operation mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 190
12.5 A/D Converter Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 192
12.6 Cautions on Emulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 195
12.6.1
D/A converter mode register (DAM0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 195
Chapter 13 Serial Interface SIO30 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 197
13.1
13.2
13.3
13.4
13.5
SIO30 Functions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 197
SIO30 Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 198
List of SFRs (Special Function Registers). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 198
Serial Interface Control Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 199
Serial Interface Operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200
13.5.1
Operation stop mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200
13.5.2
Three-wire serial I/O mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 201
Chapter 14 Serial Interface SIO31 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 205
14.1
SIO31 Functions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 205
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11
14.2
14.3
14.4
14.5
SIO31 Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 207
List of SFRs (Special Function Registers). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 207
Serial Interface Control Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 208
Serial Interface Operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 210
14.5.1
Operation stop mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 210
14.5.2
Three-wire serial I/O mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 211
14.5.3
Two-wire serial I/O mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 213
Chapter 15 Serial Interface Channel UART . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 217
15.1
15.2
15.3
15.4
15.5
UART Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 217
UART Configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 218
List of SFRS (Special Function Registers) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 219
Serial Interface Control Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 220
Serial Interface Operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 225
15.5.1
Operation stop mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 225
15.5.2
Asynchronous serial interface (UART) mode . . . . . . . . . . . . . . . . . . . . . . . . . . 226
15.6 Behavior of UART during Standby of the Controller . . . . . . . . . . . . . . . . . . . . . . . . 238
Chapter 16 CAN Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 239
16.1
CAN Protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 240
16.1.1
Protocol Mode Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 240
16.1.2
Message Format. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 240
16.1.3
Data Frame / Remote Frame . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 241
16.1.4
Description of each field . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 242
16.1.5
Error Frame . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 248
16.1.6
Overload Frame . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 249
16.2 Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 250
16.2.1
Arbitration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 250
16.2.2
Bit Stuffing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 250
16.2.3
Multi Master . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 251
16.2.4
Multi Cast . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 251
16.2.5
Sleep Mode/Stop Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 251
16.2.6
Error Control Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 252
16.2.7
Baud Rate Control Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 255
16.2.8
State Shift Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 258
16.3 Outline Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 261
16.4 Connection with Target System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 262
16.5 CAN Controller Configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 262
16.6 Special Function Register for CAN-module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 263
16.7 Message and Buffer Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 264
16.8 Transmit Buffer Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 265
16.9 Transmit Message Format. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 265
16.10 Receive Buffer Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 269
16.11 Receive Message Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 270
16.12 Mask Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 276
16.13 Operation of the CAN Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 280
16.13.1 CAN control register (CANC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 280
16.13.2 DCAN Error Status Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 284
16.13.3 CAN Transmit Error Counter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 287
16.13.4 CAN Receive Error Counter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 287
16.13.5 Message Count Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 288
16.14 Baudrate Generation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 290
16.15 Function Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 296
16.15.1 Transmit Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 296
16.15.2 Receive Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 298
16.15.3 Mask Control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 299
16.15.4 Special Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 302
16.16 Interrupt Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 304
12
User’s Manual U16504EE1V1UD00
16.16.1 Interrupt Vectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 304
16.16.2 Transmit Interrupt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 304
16.16.3 Receive Interrupt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 304
16.16.4 Error Interrupt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 305
16.17 Influence of the standby Function of the CAN Controller . . . . . . . . . . . . . . . . . . . . 306
16.17.1 CPU Halt Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 306
16.17.2 CPU Stop Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 306
16.17.3 DCAN Sleep Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 306
16.17.4 DCAN Stop Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 308
16.18 Functional Description by Flowcharts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 309
16.18.1 Initialization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 309
16.18.2 Transmit Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 310
16.18.3 Abort Transmit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 311
16.18.4 Handling by the DCAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 312
16.18.5 Receive Event Oriented . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 313
16.18.6 Receive Task Oriented . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 314
Chapter 17 LCD Controller / Driver. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 315
17.1
17.2
17.3
17.4
17.5
17.6
17.7
17.8
LCD Controller/Driver Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 315
LCD Controller/Driver Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 315
LCD Controller/Driver Control Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 317
LCD Controller/Driver Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 318
LCD Display Data Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 319
Common Signals and Segment Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 320
Supplying LCD Drive Voltage VLC0, VLC1, and VLC2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .322
Display Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 324
17.8.1
4-time-division display example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 324
17.9 Cautions on Emulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 327
17.9.1
LCD timer control register (LCDTM) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 327
Chapter 18 Sound Generator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 329
18.1
18.2
18.3
18.4
Sound Generator Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 329
Sound Generator Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 330
Sound Generator Control Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 330
Sound Generator Operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 335
18.4.1
To output basic cycle signal SGOF (without amplitude) . . . . . . . . . . . . . . . . . . 335
18.4.2
To output basic cycle signal SGO (with amplitude) . . . . . . . . . . . . . . . . . . . . . 336
Chapter 19 Meter Controller / Driver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 337
19.1
19.2
19.3
19.4
Meter Controller/Driver Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 337
Meter Controller/Driver Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 338
Meter Controller/Driver Control Registers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 341
Meter Controller/Driver Operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 346
19.4.1
Basic operation of free-running up counter (SMCNT) . . . . . . . . . . . . . . . . . . . 346
19.4.2
Update of PWM data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 347
19.4.3
Operation of 1-bit addition circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 348
19.4.4
PWM output operation (output with 1 clock shifted) . . . . . . . . . . . . . . . . . . . . . 349
Chapter 20 Interrupt Functions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 351
20.1
20.2
20.3
20.4
Interrupt Function Types. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 351
Interrupt Sources and Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 352
Interrupt Function Control Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 355
Interrupt Servicing Operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 361
20.4.1
Non-maskable interrupt request acknowledge operation . . . . . . . . . . . . . . . . . 361
20.4.2
Maskable interrupt request acknowledge operation . . . . . . . . . . . . . . . . . . . . . 363
20.4.3
Software interrupt request acknowledge operation . . . . . . . . . . . . . . . . . . . . . 366
20.4.4
Multiple interrupt servicing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 366
20.4.5
Interrupt request reserve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 370
User’s Manual U16504EE1V1UD00
13
Chapter 21 Standby Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 373
21.1
Standby Function and Configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 373
21.1.1
Standby function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 373
21.1.2
Standby function control register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 374
21.2 Standby Function Operations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 375
21.2.1
HALT mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 375
21.2.2
STOP mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 378
Chapter 22 Reset Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 381
22.1
Reset Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 381
Chapter 23 µPD78F0828A and Memory Definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . 387
23.1
23.2
23.3
23.4
Memory Size Switching Register (IMS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 388
Internal Expansion RAM Size Switching Register . . . . . . . . . . . . . . . . . . . . . . . . . . 389
Self-Programming and Oscillation Control Register . . . . . . . . . . . . . . . . . . . . . . . . 390
Flash memory programming with flash programmer. . . . . . . . . . . . . . . . . . . . . . . . 391
23.4.1
Selection of transmission method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 391
23.4.2
Initialization of the programming mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 391
23.4.3
Flash memory programming function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 392
23.4.4
Flash programmer connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 393
23.4.5
Flash programming precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 394
23.5 Flash Self-Programming Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 395
23.5.1
Flash Self-Programming Mode Control Register . . . . . . . . . . . . . . . . . . . . . . . 395
Chapter 24 Instruction Set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 397
24.1
Legends Used in Operation List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 397
24.1.1
Operand identifiers and description methods . . . . . . . . . . . . . . . . . . . . . . . . . . 397
24.1.2
Description of “operation” column . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 398
24.2 Operation List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 399
24.3 Instructions Listed by Addressing Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 407
Chapter 25 Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 411
25.1
25.2
25.3
25.4
25.5
Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 411
Capacitance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 415
Main System Clock Oscillation Circuit Characteristics . . . . . . . . . . . . . . . . . . . . . . 417
DC Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 420
AC Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 432
25.5.1
Basic Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 432
25.5.2
Serial Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 435
25.5.3
Sound Generator Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 442
25.5.4
Meter Controller / Driver Characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 443
25.5.5
A/D Converter Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 445
25.5.6
Data Memory Stop Mode Low Supply Voltage Data Retention Characteristics 447
25.5.7
Flash Memory Programming Characteristics: µPD78F0828A(A) . . . . . . . . . . . 450
Chapter 26 Package Drawing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 453
Chapter 27 Recommended Soldering Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 455
Appendix A Development Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 457
Appendix B Embedded Software. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 463
Appendix C Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 465
Appendix D Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 469
14
User’s Manual U16504EE1V1UD00
List of Figures
Figure 1-1:
Figure 1-2:
Figure 1-3:
Figure 2-1:
Figure 2-2:
Figure 3-1:
Figure 3-2:
Figure 3-3:
Figure 3-4:
Figure 3-5:
Figure 3-6:
Figure 3-7:
Figure 3-8:
Figure 3-9:
Figure 3-10:
Figure 3-11:
Figure 3-12:
Figure 3-13:
Figure 3-14:
Figure 3-15:
Figure 3-16:
Figure 3-17:
Figure 3-18:
Figure 3-19:
Figure 3-20:
Figure 3-21:
Figure 3-22:
Figure 3-23:
Figure 3-24:
Figure 3-25:
Figure 3-26:
Figure 4-1:
Figure 4-2:
Figure 4-3:
Figure 4-4:
Figure 4-5:
Figure 4-6:
Figure 4-7:
Figure 4-8:
Figure 4-9:
Figure 4-10:
Figure 4-11:
Figure 4-12:
Figure 4-13:
Figure 5-1:
Figure 5-2:
Figure 5-3:
Figure 5-4:
Figure 5-5:
Figure 6-1:
Figure 6-2:
Figure 6-3:
Figure 6-4:
Figure 6-5:
Pin Configuration ......................................................................................................... 27
78K/0 Series Expansion .............................................................................................. 29
Block Diagram ............................................................................................................. 31
Connection of IC Pins.................................................................................................. 44
Pin Input/Output Circuits (1/3) ..................................................................................... 47
Memory Map of the µPD780824A ............................................................................... 51
Memory Map of the µPD780826A ............................................................................... 52
Memory Map of the µPD780828A ............................................................................... 53
Memory Map of the µPD78F0828A ............................................................................. 54
Data Memory Addressing of µPD780824A ................................................................. 58
Data Memory Addressing of µPD780826A ................................................................. 59
Data Memory Addressing of µPD780828A ................................................................. 60
Data Memory Addressing of µPD78F0828A ............................................................... 61
Program Counter Configuration .................................................................................. 62
Program Status Word Configuration ........................................................................... 62
Stack Pointer Configuration......................................................................................... 64
Data to be Saved to Stack Memory............................................................................. 64
Data to be Reset to Stack Memory ............................................................................. 64
General Register Configuration ................................................................................... 65
Relative Addressing .................................................................................................... 70
Immediate Addressing................................................................................................. 71
Table Indirect Addressing............................................................................................ 72
Register Addressing .................................................................................................... 73
Register Addressing .................................................................................................... 75
Direct addressing ........................................................................................................ 76
Short direct addressing ............................................................................................... 77
Special-Function Register (SFR) Addressing.............................................................. 78
Register indirect addressing ........................................................................................ 79
Based addressing description example....................................................................... 80
Based indexed addressing description example ......................................................... 81
Stack addressing description example ........................................................................ 82
Port Types ................................................................................................................... 83
P00 to P03 Configurations .......................................................................................... 87
P10 to P14 Configurations .......................................................................................... 88
P20 to P27 Configurations .......................................................................................... 89
P34 to P37 Configurations .......................................................................................... 90
P40 to P47 Configurations .......................................................................................... 91
P50 to P57 Configurations .......................................................................................... 92
P60 to P65 Configurations .......................................................................................... 93
P80 to P87 Configurations .......................................................................................... 94
P90 to P97 Configurations .......................................................................................... 95
Port Mode Register Format ......................................................................................... 97
Pull-Up Resistor Option Register (PUm) Format......................................................... 98
Port Function Register (PF3, PF4, PF8 and PF9) Format........................................... 99
Block Diagram of Clock Generator ............................................................................ 103
Processor Clock Control Register Format ................................................................. 104
External Circuit of Main System Clock Oscillator ...................................................... 105
Examples of Oscillator with Bad Connection (1/3) .................................................... 106
System Clock and CPU Clock Switching................................................................... 111
Timer 2 (TM2) Block Diagram ................................................................................... 113
16-Bit Timer Mode Control Register (TMC2) Format ................................................ 116
Capture Pulse Control Register (CRC2) Format ....................................................... 117
Prescaler Mode Register (PRM2) Format ................................................................. 118
Configuration Diagram for Pulse Width Measurement
by Using the Free Running Counter .......................................................................... 119
User’s Manual U16504EE1V1UD00
15
Figure 6-6:
Figure 6-7:
Figure 6-8:
Figure 6-9:
Figure 6-10:
Figure 7-1:
Figure 7-2:
Figure 7-3:
Figure 7-4:
Figure 7-5:
Figure 7-6:
Figure 7-7:
Figure 7-8:
Figure 7-9:
Figure 7-10:
Figure 7-11:
Figure 7-12:
Figure 7-13:
Figure 7-14:
Figure 7-15:
Figure 7-16:
Figure 7-17:
Figure 7-18:
Figure 7-19:
Figure 7-20:
Figure 7-21:
Figure 7-22:
Figure 7-23:
Figure 7-24:
Figure 7-25:
Figure 8-1:
Figure 8-2:
Figure 8-3:
Figure 8-4:
Figure 8-5:
Figure 9-1:
Figure 9-2:
Figure 9-3:
Figure 10-1:
Figure 10-2:
Figure 10-3:
Figure 11-1:
Figure 11-2:
Figure 11-3:
Figure 11-4:
Figure 12-1:
Figure 12-2:
Figure 12-3:
Figure 12-4:
Figure 12-5:
Figure 12-6:
Figure 12-7:
Figure 12-8:
Figure 12-9:
Figure 12-10:
Figure 12-11:
16
Timing of Pulse Width Measurement Operation by Using the Free Running
Counter and One Capture Register (with Both Edges Specified).............................. 120
CR2m Capture Operation with Rising Edge Specified .............................................. 121
Timing of Pulse Width Measurement Operation by Free Running Counter
(with Both Edges Specified) ...................................................................................... 122
16-Bit Timer Register Start Timing ............................................................................ 123
Capture Register Data Retention Timing................................................................... 123
8-Bit Timer/Event Counter 50 Block Diagram............................................................ 129
8-Bit Timer/Event Counter 51 Block Diagram............................................................ 130
Block Diagram of 8-Bit Timer/Event Counters 50 and 51 Output Control Circuit ...... 130
Timer Clock Select Register 50 Format..................................................................... 132
Timer Clock Select Register 51 Format..................................................................... 133
8-Bit Timer Mode Control Register 50 Format........................................................... 134
8-Bit Timer Mode Control Register 51 Format (1/2) .................................................. 135
Port Mode Register 3 Format .................................................................................... 136
Port Mode Register 9 Format .................................................................................... 137
8-Bit Timer Mode Control Register Settings for Interval Timer Operation ................. 138
Interval Timer Operation Timings (1/3)...................................................................... 139
8-Bit Timer Mode Control Register Setting for External Event Counter Operation.... 143
External Event Counter Operation Timings (with Rising Edge Specified) ................. 143
8-Bit Timer Mode Control Register Settings for Square-Wave Output Operation ..... 144
Square-wave Output Operation Timing ..................................................................... 145
8-Bit Timer Control Register Settings for PWM Output Operation ............................ 146
PWM Output Operation Timing (Active high setting)................................................. 147
PWM Output Operation Timings (CRn0 = 00H, active high setting) ......................... 147
PWM Output Operation Timings (CRn = FFH, active high setting) ........................... 148
PWM Output Operation Timings (CRn changing, active high setting)....................... 148
8-Bit Timer Mode Control Register Settings for 16-Bit Interval Timer Operation....... 149
16-Bit Resolution Cascade Mode (with TM50 and TM51)......................................... 151
8-bit Timer Registers 50 and 51 Start Timings .......................................................... 153
External Event Counter Operation Timings ............................................................... 153
Timings after Compare Register Change during Timer Count Operation ................. 154
8-Bit Timer/Event Counter 52 Block Diagram............................................................ 156
Timer Clock Select Register 52 Format..................................................................... 157
8-Bit Timer Output Control Register Format.............................................................. 158
8-Bit Timer Mode Control Register Settings for Interval Timer Operation ................. 159
Interval Timer Operation Timings (1/3)...................................................................... 159
Block Diagram of Watch Timer.................................................................................. 163
Watch Timer Mode Control Register (WTM) Format (1/2) ........................................ 165
Operation Timing of Watch Timer/Interval Timer....................................................... 168
Watchdog Timer Block Diagram................................................................................ 171
Timer Clock Select Register 2 Format....................................................................... 172
Watchdog Timer Mode Register Format ................................................................... 173
Remote Controlled Output Application Example ....................................................... 177
Clock Output Control Circuit Block Diagram.............................................................. 178
Timer Clock Select Register 0 Format....................................................................... 179
Port Mode Register 6 Format .................................................................................... 180
A/D Converter Block Diagram ................................................................................... 181
Power-Fail Detection Function Block Diagram .......................................................... 182
A/D Converter Mode Register (ADM1) Format.......................................................... 184
Analog Input Channel Specification Register (ADS1) Format ................................... 185
Power-Fail Compare Mode Register (PFM) Format.................................................. 186
Power-fail compare threshold value register (PFT) ................................................... 186
Basic Operation of 8-Bit A/D Converter..................................................................... 187
Relation between Analog Input Voltage and A/D Conversion Result ........................ 189
A/D Conversion ......................................................................................................... 191
Example Method of Reducing Current Consumption in Standby Mode .................... 192
Analog Input Pin Handling ......................................................................................... 193
User’s Manual U16504EE1V1UD00
Figure 12-12:
Figure 12-13:
Figure 13-1:
Figure 13-2:
Figure 13-3:
Figure 13-4:
Figure 13-5:
Figure 14-1:
Figure 14-2:
Figure 14-3:
Figure 14-4:
Figure 14-5:
Figure 14-6:
Figure 14-7:
Figure 14-8:
Figure 14-9:
Figure 14-10:
Figure 15-1:
Figure 15-2:
Figure 15-3:
Figure 15-4:
Figure 15-5:
Figure 15-6:
Figure 15-7:
Figure 15-8:
Figure 15-9:
Figure 15-10:
Figure 15-11:
Figure 15-12:
Figure 15-13:
Figure 16-1:
Figure 16-2:
Figure 16-3:
Figure 16-4:
Figure 16-5:
Figure 16-6:
Figure 16-7:
Figure 16-8:
Figure 16-9:
Figure 16-10:
Figure 16-11:
Figure 16-12:
Figure 16-13:
Figure 16-14:
Figure 16-15:
Figure 16-16:
Figure 16-17:
Figure 16-18:
Figure 16-19:
Figure 16-20:
Figure 16-21:
Figure 16-22:
Figure 16-23:
Figure 16-24:
Figure 16-25:
Figure 16-26:
Figure 16-27:
Figure 16-28:
A/D Conversion End Interrupt Request Generation Timing....................................... 194
D/A Converter Mode Register (DAM0) Format.......................................................... 195
Block Diagram of SIO30 ............................................................................................ 197
Format of Serial Operation Mode Register (CSIM30) ............................................... 199
Format of Serial Operation Mode Register (CSIM30) ............................................... 200
Format of Serial Operation Mode Register (CSIM30) ............................................... 201
Timing of Three-wire Serial I/O Mode........................................................................ 202
Block Diagram of SIO31 ............................................................................................ 206
Format of Serial Operation Mode Register (CSIM31) ............................................... 208
Format of Serial Mode Switch Register (SIOSWI)..................................................... 209
Format of Serial Operation Mode Register (CSIM31) ............................................... 210
Format of Serial Operation Mode Register (CSIM31) ............................................... 211
Format of Serial Mode Switch Register (SIOSWI)..................................................... 212
Format of Serial Operation Mode Register (CSIM31) ............................................... 213
Format of Serial Mode Switch Register (SIOSWI)..................................................... 214
Timing of Three-wire Serial I/O Mode........................................................................ 215
Timing of Two-wire Serial I/O Mode .......................................................................... 215
Block Diagram of UART ............................................................................................ 217
Format of Asynchronous Serial Interface Mode Register (ASIM0) (1/2) ................... 220
Format of Asynchronous Serial Interface Status Register (ASIS0) ........................... 222
Format of Baud Rate Generator Control Register (BRGC0) (1/2)............................. 223
Register Settings ....................................................................................................... 225
Format of Asynchronous Serial Interface Mode Register (ASIM0) (1/2) ................... 226
Format of Asynchronous Serial Interface Status Register (ASIS0) ........................... 228
Format of Baud Rate Generator Control Register (BRGC0) (1/2)............................. 229
Error Tolerance (when k = 0), including Sampling Errors.......................................... 232
Format of Transmit/Receive Data in Asynchronous Serial Interface......................... 233
Timing of Asynchronous Serial Interface Transmit Completion Interrupt .................. 235
Timing of Asynchronous Serial Interface Receive Completion Interrupt ................... 236
Receive Error Timing................................................................................................. 237
Data Frame ............................................................................................................... 241
Remote Frame .......................................................................................................... 241
Data Frame ............................................................................................................... 242
Arbitration Field/Standard Format Mode ................................................................... 242
Arbitration Field/Extended Format Mode................................................................... 243
Control Field (Standard Format Mode)...................................................................... 244
Control Field (Extended Format Mode) ..................................................................... 244
Data Field .................................................................................................................. 245
CRC Field .................................................................................................................. 245
ACK Field .................................................................................................................. 246
End of Frame............................................................................................................. 246
Interframe Space/Error Active ................................................................................... 247
Interframe Space/Error Passive ................................................................................ 247
Error Frame ............................................................................................................... 248
Overload Frame ........................................................................................................ 249
Nominal Bit Time (8 to 25 Time Quanta) ................................................................... 255
Adjusting Synchronization of the Data Bit ................................................................. 256
Bit Synchronization.................................................................................................... 257
Transmission State Shift Chart.................................................................................. 258
Reception State Shift Chart ....................................................................................... 259
Error State Shift Chart ............................................................................................... 260
Structural Block Diagram........................................................................................... 261
Connection to the CAN Bus ...................................................................................... 262
Transmit Message Definition Bits ............................................................................. 266
Transmit Identifier ..................................................................................................... 267
Transmit Data ........................................................................................................... 268
Control bits for Receive Identifier ............................................................................. 271
Receive Status Bits (1/2) .......................................................................................... 272
User’s Manual U16504EE1V1UD00
17
Figure 16-29:
Figure 16-30:
Figure 16-31:
Figure 16-32:
Figure 16-33:
Figure 16-34:
Figure 16-35:
Figure 16-36:
Figure 16-37:
Figure 16-38:
Figure 16-39:
Figure 16-40:
Figure 16-41:
Figure 16-42:
Figure 16-43:
Figure 16-44:
Figure 16-45:
Figure 16-46:
Figure 16-47:
Figure 16-48:
Figure 16-49:
Figure 16-50:
Figure 16-51:
Figure 16-52:
Figure 16-53:
Figure 16-54:
Figure 17-1:
Figure 17-2:
Figure 17-3:
Figure 17-4:
Figure 17-5:
Figure 17-6:
Figure 17-7:
Figure 17-8:
Figure 17-9:
Figure 17-10:
Figure 17-11:
Figure 17-12:
Figure 18-1:
Figure 18-2:
Figure 18-3:
Figure 18-4:
Figure 18-5:
Figure 18-6:
Figure 18-7:
Figure 19-1:
Figure 19-2:
Figure 19-3:
Figure 19-4:
Figure 19-5:
Figure 19-6:
Figure 19-7:
Figure 19-8:
Figure 19-9:
Figure 19-10:
Figure 20-1:
Figure 20-2:
18
Receive Identifier ...................................................................................................... 274
Receive Data ............................................................................................................ 275
Identifier Compare with Mask .................................................................................... 277
Control Bits for Mask Identifier ................................................................................. 278
Mask Identifier .......................................................................................................... 279
CAN Control Register (1/2) ....................................................................................... 280
DCAN Support........................................................................................................... 281
Time Stamp Function ................................................................................................ 283
SOFOUT Toggle Function......................................................................................... 283
Global Time System Function ................................................................................... 283
CAN Error Status Register (1/3) ............................................................................... 284
Transmit Error Counter ............................................................................................. 287
Receive Error Counter .............................................................................................. 287
Message Count Register (MCNT) (1/2) .................................................................... 288
Bit Rate Prescaler (1/2) ............................................................................................ 290
Synchronization Control Registers 0 and 1 (1/2) ..................................................... 292
Transmit Control Register (1/2) ................................................................................ 296
Receive Message Register ....................................................................................... 298
Mask Control Register (1/2) ...................................................................................... 299
Redefinition Control Register (1/2) ........................................................................... 302
Initialization Flow Chart ............................................................................................. 309
Transmit Preparation ................................................................................................. 310
Transmit Abort ........................................................................................................... 311
Handling of Semaphore Bits by DCAN-Module......................................................... 312
Receive with Interrupt, Software Flow ....................................................................... 313
Receive, Software Polling.......................................................................................... 314
LCD Controller/Driver Block Diagram........................................................................ 316
LCD Clock Select Circuit Block Diagram................................................................... 316
LCD Display Mode Register (LCDM) Format ............................................................ 317
LCD Display Control Register (LCDC) Format .......................................................... 318
Relationship between LCD Display Data Memory Contents
and Segment/Common Outputs319
Common Signal Waveform........................................................................................ 321
Common Signal and Segment Signal Voltages and Phases..................................... 321
Example of Connection of LCD Drive Power Supply (1/2) ........................................ 322
4-Time-Division LCD Display Pattern and Electrode Connections............................ 324
4-Time-Division LCD Panel Connection Example ..................................................... 325
4-Time-Division LCD Drive Waveform Examples (1/3 Bias Method) ........................ 326
LCD Timer Control Register (LCDTM) Format .......................................................... 327
Sound Generator Block Diagram............................................................................... 329
Concept of Each Signal ............................................................................................. 330
Sound Generator Control Register (SGCR) Format (1/2) ......................................... 331
Sound Generator Buzzer Control Register (SGBR) Format...................................... 333
Sound Generator Amplitude Register (SGAM) Format ............................................. 334
Sound Generator Output Operation Timing............................................................... 335
Sound Generator Output Operation Timing............................................................... 336
Meter Controller/Driver Block Diagram...................................................................... 337
1-bit Addition Circuit Block Diagram .......................................................................... 338
Timer Mode Control Register (MCNTC) Format........................................................ 341
Compare Control Register n (MCMPCn) Format ...................................................... 342
Port Mode Control Register (PMC) Format (1/2)....................................................... 343
Meter Controller/Driver Clock Register (SMSWI) Format.......................................... 345
Restart Timing after Count Stop (Count Start Æ Count Stop Æ Count Start) ........... 346
Update of PWM data ................................................................................................. 347
Timing in 1-bit Addition Circuit Operation .................................................................. 348
Timing of Output with 1 Clock Shifted ....................................................................... 349
Basic Configuration of Interrupt Function (1/2).......................................................... 353
Interrupt Request Flag Register Format .................................................................... 356
User’s Manual U16504EE1V1UD00
Figure 20-3:
Figure 20-4:
Figure 20-5:
Figure 20-6:
Figure 20-7:
Figure 20-8:
Figure 20-9:
Figure 20-10:
Figure 20-11:
Figure 20-12:
Figure 20-13:
Figure 20-14:
Figure 21-1:
Figure 21-2:
Figure 21-3:
Figure 21-4:
Figure 21-5:
Figure 21-6:
Figure 22-1:
Figure 22-2:
Figure 22-3:
Figure 22-4:
Figure 23-1:
Figure 23-2:
Figure 23-3:
Figure 23-4:
Figure 23-5:
Figure 23-6:
Figure 23-7:
Figure 23-8:
Figure A-1:
Interrupt Mask Flag Register Format......................................................................... 357
Priority Specify Flag Register Format........................................................................ 358
Formats of External Interrupt Rising Edge Enable Register
and External Interrupt Falling Edge Enable Register359
Program Status Word Format ................................................................................... 360
Flowchart from Non-Maskable Interrupt Generation to Acknowledge ...................... 361
Non-Maskable Interrupt Request Acknowledge Timing ............................................ 362
Non-Maskable Interrupt Request Acknowledge Operation ....................................... 362
Interrupt Request Acknowledge Processing Algorithm ............................................. 364
Interrupt Request Acknowledge Timing (Minimum Time).......................................... 365
Interrupt Request Acknowledge Timing (Maximum Time)......................................... 365
Multiple Interrupt Example (1/2) ................................................................................ 368
Interrupt Request Hold .............................................................................................. 371
Oscillation Stabilization Time Select Register Format............................................... 374
Standby Timing ......................................................................................................... 374
HALT Mode Clear upon Interrupt Generation ........................................................... 376
HALT Mode Release by RESET Input ...................................................................... 377
STOP Mode Release by Interrupt Generation .......................................................... 379
Release by STOP Mode RESET Input...................................................................... 380
Block Diagram of Reset Function .............................................................................. 381
Timing of Reset Input by RESET Input ..................................................................... 382
Timing of Reset due to Watchdog Timer Overflow.................................................... 382
Timing of Reset Input in STOP Mode by RESET Input ............................................. 383
Memory Size Switching Register Format .................................................................. 388
Internal Expansion RAM Size Switching Register Format......................................... 389
Self-Programming and Oscillation Control Register Format...................................... 390
Transmission Method Selection Format .................................................................... 391
Connection of using the 3-Wire SIO30 Method ......................................................... 393
Connection of using the 3-Wire SIO30 Method with Handshake .............................. 393
Connection of using the UART Method ..................................................................... 394
Flash Self-Programming Mode Control Register Format .......................................... 395
Development Tool Configuration ............................................................................... 458
User’s Manual U16504EE1V1UD00
19
20
User’s Manual U16504EE1V1UD00
List of Tables
Table 1-1:
Table 1-2:
Table 1-3:
Table 2-1:
Table 2-2:
Table 2-3:
Table 3-1:
Table 3-2:
Table 3-3:
Table 3-4:
Table 3-5:
Table 3-6:
Table 3-7:
Table 3-8:
Table 3-9:
Table 3-10:
Table 3-11:
Table 3-12:
Table 3-13:
Table 4-1:
Table 4-2:
Table 5-1:
Table 5-2:
Table 6-1:
Table 7-1:
Table 7-2:
Table 7-3:
Table 7-4:
Table 7-5:
Table 7-6:
Table 7-7:
Table 7-8:
Table 7-9:
Table 7-10:
Table 7-11:
Table 7-12:
Table 7-13:
Table 8-1:
Table 8-2:
Table 9-1:
Table 9-2:
Table 9-3:
Table 10-1:
Table 10-2:
Table 10-3:
Table 10-4:
Table 10-5:
Table 11-1:
Table 12-1:
Table 13-1:
Table 13-2:
Table 14-1:
Table 14-2:
Table 14-3:
The major functional differences between the subseries ............................................... 30
Overview of Functions .................................................................................................... 32
Differences between Flash and Mask ROM version ...................................................... 33
Pin Input/Output Types................................................................................................... 35
Non-Port Pins ................................................................................................................. 37
Types of Pin Input/Output Circuits.................................................................................. 45
Internal ROM Capacities ................................................................................................ 55
Vectored Interrupts ......................................................................................................... 56
Internal high-speed RAM................................................................................................ 57
Internal expansion RAM (including sharing with DCAN) ................................................ 57
Special Function Register List ........................................................................................ 67
Implied Addressing ......................................................................................................... 74
Register Addressing ....................................................................................................... 75
Direct addressing............................................................................................................ 76
Short direct addressing................................................................................................... 77
Special-Function Register (SFR) Addressing................................................................. 78
Register indirect addressing ........................................................................................... 79
Based addressing........................................................................................................... 80
Based indexed addressing ............................................................................................. 81
Pin Input/Output Types................................................................................................... 84
Port Configuration........................................................................................................... 86
Clock Generator Configuration ..................................................................................... 103
Maximum Time Required for CPU Clock Switchover ................................................... 110
Timer 2 Configuration ................................................................................................... 114
8-Bit Timer/Event Counter 50 Interval Times ............................................................... 126
8-Bit Timer/Event Counter 51 Interval Times ............................................................... 126
8-Bit Timer/Event Counter 50 Square-Wave Output Ranges....................................... 127
8-Bit Timer/Event Counter 51 Square-Wave Output Ranges....................................... 127
16-Bit Timer/Event Counter TM50/TM51 Interval Times .............................................. 128
16-Bit Timer/Event Counter TM50/TM51 Square-Wave Output Ranges ..................... 128
8-Bit Timer/Event Counters 50 and 51 Configurations ................................................. 129
8-Bit Timer/Event Counters 50 Interval Times.............................................................. 142
8-Bit Timer/Event Counters 51 Interval Times.............................................................. 142
8-Bit Timer/Event Counters 50 Square-Wave Output Ranges ..................................... 145
8-Bit Timer/Event Counters 51 Square-Wave Output Ranges ..................................... 145
8-Bit Timer/Event Counters Interval Times (16-Bit Timer/Event Counter Mode).......... 152
8-Bit Timer/Event Counter Square-Wave Output Ranges
(16-Bit Timer/Event Counter Mode).............................................................................. 152
8-Bit Timer 52 Interval Times ....................................................................................... 155
8-Bit Timer 52 Configurations....................................................................................... 155
Interval Timer Interval Time.......................................................................................... 164
Watch Timer Configuration........................................................................................... 164
Interval Timer Operation............................................................................................... 167
Watchdog Timer Inadvertent Program Overrun Detection Times ................................ 169
Interval Times ............................................................................................................... 170
Watchdog Timer Configuration..................................................................................... 171
Watchdog Timer Overrun Detection Time .................................................................... 174
Interval Timer Interval Time.......................................................................................... 175
Clock Output Control Circuit Configuration................................................................... 178
A/D Converter Configuration ........................................................................................ 182
Composition of SIO30 .................................................................................................. 198
List of SFRs (Special Function Registers).................................................................... 198
Composition of SIO31 .................................................................................................. 207
List of SFRs (Special Function Registers).................................................................... 207
Operating Modes and Start Trigger .............................................................................. 209
User’s Manual U16504EE1V1UD00
21
Table 14-4:
Table 14-5:
Table 15-1:
Table 15-2:
Table 15-3:
Table 15-4:
Table 15-5:
Table 16-1:
Table 16-2:
Table 16-3:
Table 16-4:
Table 16-5:
Table 16-6:
Table 16-7:
Table 16-8:
Table 16-9:
Table 16-10:
Table 16-11:
Table 16-12:
Table 16-13:
Table 16-14:
Table 16-15:
Table 16-16:
Table 16-17:
Table 16-18:
Table 16-19:
Table 16-20:
Table 16-21:
Table 16-22:
Table 16-23:
Table 16-24:
Table 16-25:
Table 16-26:
Table 16-27:
Table 17-1:
Table 17-2:
Table 17-3:
Table 17-4:
Table 17-5:
Table 17-6:
Table 18-1:
Table 18-2:
Table 19-1:
Table 20-1:
Table 20-2:
Table 20-3:
Table 20-4:
Table 21-1:
Table 21-2:
Table 21-3:
Table 21-4:
Table 22-1:
Table 23-1:
Table 23-2:
Table 23-3:
Table 23-4:
Table 23-5:
Table 23-6:
22
Operating Modes and Start Trigger .............................................................................. 212
Operating Modes and Start Trigger .............................................................................. 214
Configuration of UART ................................................................................................. 218
List of SFRs (Special Function Registers).................................................................... 219
Relation between 5-bit Counter’s Source Clock and “n” Value .................................... 231
Relation between Main System Clock and Baud Rate ................................................. 232
Causes of Receive Errors............................................................................................. 237
Outline of the Function ................................................................................................. 239
Bit Number of the Identifier .......................................................................................... 243
RTR Setting ................................................................................................................. 243
Mode Setting ............................................................................................................... 243
Data Length Code Setting ........................................................................................... 244
Operation in the Error State ......................................................................................... 247
Definition of each Field ................................................................................................ 248
Definition of each Frame ............................................................................................. 249
Arbitration .................................................................................................................... 250
Bit Stuffing ................................................................................................................... 250
Error Types .................................................................................................................. 252
Output Timing of the Error Frame ................................................................................ 252
Types of Error .............................................................................................................. 253
Error Counter ............................................................................................................... 254
Segment Name and Segment Length ......................................................................... 255
CAN Configuration........................................................................................................ 262
SFR Definitions............................................................................................................. 263
SFR Bit Definitions ....................................................................................................... 263
Message and Buffer Configuration ............................................................................... 264
Transmit Message Format............................................................................................ 265
Receive Message Format............................................................................................. 270
Mask Function .............................................................................................................. 276
Possible Setup of the SOFOUT Function..................................................................... 282
Transmission / Reception Flag ..................................................................................... 282
Possible Reactions of the DCAN.................................................................................. 287
Mask Operation Buffers................................................................................................ 300
Interrupt Sources .......................................................................................................... 304
Maximum Number of Display Pixels............................................................................. 315
LCD Controller/Driver Configuration............................................................................. 315
COM Signals ................................................................................................................ 320
LCD Drive Voltage........................................................................................................ 321
LCD Drive Voltage Supply............................................................................................ 322
Selection and Non-Selection Voltages (COM0 to COM3) ............................................ 324
Sound Generator Configuration.................................................................................... 330
Maximum and Minimum Values of the Buzzer Output Frequency ............................... 332
Meter Controller/Driver Configuration........................................................................... 338
Interrupt Source List ..................................................................................................... 352
Various Flags Corresponding to Interrupt Request Sources ........................................ 355
Times from Maskable Interrupt Request Generation to Interrupt Service .................... 363
Interrupt Request Enabled for Multiple Interrupt during Interrupt Servicing ................. 367
HALT Mode Operating Status ...................................................................................... 375
Operation after HALT Mode Release ........................................................................... 377
STOP Mode Operating Status...................................................................................... 378
Operation after STOP Mode Release........................................................................... 380
Hardware Status after Reset ........................................................................................ 383
Differences among µPD78F0828A and Mask ROM Versions...................................... 387
Values to be set after Reset for the Memory Size Switching Register ......................... 388
Examples of internal Expansion RAM Size Switching Register Settings ..................... 389
Values when the Internal Expansion RAM Size Switching Register is Reset .............. 389
Transmission Method List............................................................................................. 391
Main Functions of Flash Memory Programming........................................................... 392
User’s Manual U16504EE1V1UD00
Table 24-1:
Table 24-2:
Table 24-3:
Table 24-4:
Table 24-5:
Table 24-6:
Operand Identifiers and Description Methods .............................................................. 397
Operation List ............................................................................................................... 399
8-bit instructions ........................................................................................................... 407
16-bit instructions ......................................................................................................... 408
Bit manipulation instructions......................................................................................... 408
Call/instructions/branch instructions ............................................................................. 409
User’s Manual U16504EE1V1UD00
23
24
User’s Manual U16504EE1V1UD00
Chapter 1 Outline (µPD780828A Subseries)
1.1 Features
• Internal memory
Item
Part Number
•
•
•
•
•
•
•
Program
Memory
(ROM)
Data Memory
Internal
high-speed
RAM
LCD
Display
RAM
Internal
Expansion
RAM
Package
µPD780824A
32 Kbytes
1024 bytes
28 bytes
480 bytes
80-pin plastic QFP (fine pitch)
µPD780826A
48 Kbytes
1024 bytes
28 bytes
480 bytes
80-pin plastic QFP (fine pitch)
µPD780828A
60 Kbytes
1024 bytes
28 bytes
2016 bytes
80-pin plastic QFP (fine pitch)
µPD78F0828A
59.5 Kbytes
1024 bytes
28 bytes
2016 bytes
80-pin plastic QFP (fine pitch)
Instruction execution time can be changed
I/O ports: 59
8-bit resolution A/D converter: 5 channels
Sound generator
LCD-controller / driver
Meter controller / driver
CAN-Interface
•
•
•
•
•
•
Serial interface
3-wire mode
2-wire/3-wire mode
UART mode
Timer
Supply voltage
: 3 channels
: 1 channel
: 1 channel
: 1 channel
: 6 channels
: VDD = 4.0 to 5.5 V
The CAN macro is qualified according the requirements of ISO 11898 using the test procedures
defined by ISO 16845 and passed successfully the test procedures as recommended by C & S / FH
Wolfenbuettel.
1.2 Application
Dashboard, climate controller, security unit etc.
User’s Manual U16504EE1V1UD00
25
Chapter 1
Outline (µPD780828A Subseries)
1.3 Ordering Information
Part Number
Package
Internal ROM
µPD780824AGC(A)-xxx-8BT
80-pin plastic QFP (14 × 14 mm, resin thickness 1.4 mm)
Mask ROM
µPD780824AGC(A1)-xxx-8BT
80-pin plastic QFP (14 × 14 mm, resin thickness 1.4 mm)
Mask ROM
µPD780824AGC(A2)-xxx-8BT
80-pin plastic QFP (14 × 14 mm, resin thickness 1.4 mm)
Mask ROM
µPD780826AGC(A)-xxx-8BT
80-pin plastic QFP (14 × 14 mm, resin thickness 1.4 mm)
Mask ROM
µPD780826AGC(A1)-xxx-8BT
80-pin plastic QFP (14 × 14 mm, resin thickness 1.4 mm)
Mask ROM
µPD780826AGC(A2)-xxx-8BT
80-pin plastic QFP (14 × 14 mm, resin thickness 1.4 mm)
Mask ROM
µPD780828AGC(A)-xxx-8BT
80-pin plastic QFP (14 × 14 mm, resin thickness 1.4 mm)
Mask ROM
µPD780828AGC(A1)-xxx-8BT
80-pin plastic QFP (14 × 14 mm, resin thickness 1.4 mm)
Mask ROM
µPD780828AGC(A2)-xxx-8BT
80-pin plastic QFP (14 × 14 mm, resin thickness 1.4 mm)
Mask ROM
µPD78F0828AGC(A)-8BT
80-pin plastic QFP (14 × 14 mm, resin thickness 1.4 mm)
Flash Memory
Remark:
xxx indicates ROM code suffix.
1.4 Quality Grade
Part Number
Package
Quality Grade
µPD780824AGC(A)-xxx-8BT
80-pin plastic QFP (14 × 14 mm, resin thickness 1.4 mm)
Special
µPD780824AGC(A1)-xxx-8BT
80-pin plastic QFP (14 × 14 mm, resin thickness 1.4 mm)
Special
µPD780824AGC(A2)-xxx-8BT
80-pin plastic QFP (14 × 14 mm, resin thickness 1.4 mm)
Special
µPD780826AGC(A)-xxx-8BT
80-pin plastic QFP (14 × 14 mm, resin thickness 1.4 mm)
Special
µPD780826AGC(A1)-xxx-8BT
80-pin plastic QFP (14 × 14 mm, resin thickness 1.4 mm)
Special
µPD780826AGC(A2)-xxx-8BT
80-pin plastic QFP (14 × 14 mm, resin thickness 1.4 mm)
Special
µPD780828AGC(A)-xxx-8BT
80-pin plastic QFP (14 × 14 mm, resin thickness 1.4 mm)
Special
µPD780828AGC(A1)-xxx-8BT
80-pin plastic QFP (14 × 14 mm, resin thickness 1.4 mm)
Special
µPD780828AGC(A2)-xxx-8BT
80-pin plastic QFP (14 × 14 mm, resin thickness 1.4 mm)
Special
µPD78F0828AGC(A)-8BT
80-pin plastic QFP (14 × 14 mm, resin thickness 1.4 mm)
Special
Remark:
xxx indicates ROM code suffix.
Please refer to "Quality Grades on NEC Semiconductor Device" (Document No. C11531E) published
by NEC Corporation to know the specification of quality grade on the devices and its recommended
applications.
26
User’s Manual U16504EE1V1UD00
Chapter 1 Outline (µPD780828A Subseries)
1.5 Pin Configuration (Top View)
•
80-pin plastic QFP (14 × 14 mm)
µPD780824AGC(A)- xxx - 8BT, µPD780824AGC(A1)- xxx - 8BT, µPD780824AGC(A2)- xxx - 8BT
µPD780826AGC(A)- xxx - 8BT, µPD780826AGC(A1)- xxx - 8BT, µPD780826AGC(A2)- xxx - 8BT
µPD780828AGC(A)- xxx - 8BT, µPD780828AGC(A1)- xxx - 8BT, µPD780828AGC(A2)- xxx - 8BT
µPD78F0828AGC(A) - 8BT
S15/P80
S16/P97
S17/P96
S18/SI31/P95
S19/SO31/SIO31/P94
S20/SCK31/P93
S21/TPO/P92
S22/TIO51/P91
S23/TI22/P90
S24/SI30/P37
S25/SO30/P36
S26/SCK30/P35
S27/TIO50/P34
IC/Vpp
X1
X2
VSS0
VDD0
CTXD
CRXD
P47/S0
COM3
COM2
COM1
COM0
VLCD
Pin Configuration
P81/S14
P82/S13
P83/S12
P84/S11
P85/S10
P86/S9
P87/S8
P40/S7
P41/S6
P42/S5
P43/S4
P44/S3
P45/S2
P46/S1
Figure 1-1:
80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61
60
1
59
2
58
3
57
4
56
5
55
6
54
7
53
8
52
9
51
10
50
11
49
12
48
13
47
14
46
15
45
16
44
17
43
18
42
19
41
20
SMVSS
SMVDD
SM11/P20
SM12/P21
SM13/P22
SM14/P23
SM21/P24
SM22/P25
SM23/P26
SM24/P27
SM31/P50
SM32/P51
SM33/P52
SM34/P53
SM41/P54
SM42/P55
SM43/P56
SM44/P57
SMVDD
SMVSS
RxD0/P62
SGOA/PCL/P61
SGO/SGOF/P60
RESET
INTP1/P01
INTP2/P02
CCLK/P03
TI21/P65
TI20/P64
TxD0/P63
AVss
ANI0/P10
ANI1/P11
ANI2/P12
ANI3/P13
ANI4/P14
AVDD/AVREF
VSS1
VDD1
INTP0/P00
21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40
Cautions: 1. Connect IC (internally connected) pin directly to VSS.
2. AVDD pin should be connected to VDD.
3. AVSS pin should be connected to VSS.
Remark:
When these devices are used in applications, that require reduction of the noise, generated
from inside the microcontroller, the implementation of noise reduction measures, such as
connecting the VSS0 and VSS1 to different ground lines, is recommended.
User’s Manual U16504EE1V1UD00
27
Chapter 1
Outline (µPD780828A Subseries)
Pin Identifications
P00 to P03
:
Port 0
SGO
:
Sound Generator Output
P10 to P14
:
Port 1
SGOA
:
Sound Generator Amplitude
P20 to P27
:
Port 2
SGOF
:
Sound Generator Frequency
P34 to P37
:
Port 3
PCL
:
Programmable Clock Output
P40 to P47
:
Port 4
SM11 to SM14
:
Meter Controller/Driver
P50 to P57
:
Port 5
SM21 to SM24
:
Meter Controller/Driver
P60 to P65
:
Port 6
SM31 to SM34
:
Meter Controller/Driver
P80 to P87
:
Port 8
SM41 to SM44
:
Meter Controller/Driver
P90 to P97
:
Port 9
SMVDD
:
Meter Controller/Driver
INTP0 to INTP2
:
Interrupt from Peripherals
SMVSS
:
Meter Controller/Driver
TI50, TI51
:
Timer Input
S0 to S27
:
Segment Output
TI20 to TI22
:
Timer Input
COM0 to COM3
:
Common Output
TO51, TO52
:
Timer Output
X1, X2
:
Crystal (Main System Clock)
TPO
:
Timer Output
RESET
:
Reset
CRXD
:
CAN Receive Data
ANI0 to ANI4
:
Analog Input
CTXD
:
CAN Transmit Data
AVSS
:
Analog Ground
CCLK
:
CAN Clock
AVDD/AVREF
:
Analog Reference Voltage and
SI30, SI31
:
Serial Input
:
ADC Power Supply
SO30, SO31
:
Serial Output
VDD0, VDD1
:
Power Supply
SCK30, SCK31
:
Serial Clock
VPP
:
Programming Power Supply
SIO31
:
Serial Input/Output
VSS0, VSS1
:
Ground
RXD0
:
Receive Data
IC
:
Internally Connected
TXD0
:
Transmit Data
28
:
User’s Manual U16504EE1V1UD00
Chapter 1 Outline (µPD780828A Subseries)
1.6 78K/0 Series Expansion
The following shows the products organized according to usage.
The names in the parallelograms are subseries.
Figure 1-2:
78K/0 Series Expansion
Products in mass production
Products under development
Y subseries products are compatible with I2C bus.
Control
100-pin
100-pin
100-pin
µ PD78075B
µ PD78078
µ PD78070A
100-pin
80-pin
80-pin
µ PD780058
µPD780065
64-pin
µ PD780078
64-pin
64-pin
µ PD780034A
µ PD780024A
42/44-pin
µ PD78083
64-pin
µPD780988
EMI-noise reduced version of the µPD78078
µPD78078Y
µ PD78054 with timer and enhanced external interface
µ PD78070AY
ROMless version of the µ PD78078
µ PD78078Y with enhanced serial I/O and limited function
µ PD780018AY
µ PD780058Y
µ PD780078Y
µ PD780034AY
µ PD780024AY
µ PD78054 with enhanced serial I/O
µ PD780024A with expanded RAM
µ PD780034A with timer and enhanced serial I/O
µ PD780024A with enhanced A/D converter
µ PD78018F with enhanced serial I/O
On-chip UART, capable of operating at low voltage (1.8 V)
Inverter control
On-chip inverter control circuit and UART. EMI-noise reduced.
VFD drive
78K/0
Series
100-pin
µ PD780208
µ PD78044F with enhanced I/O and VFD C/D. Display output total: 53
80-pin
For panel control. On-chip VFD C/D. Display output total: 53
80-pin
µ PD780232
µPD78044H
80-pin
µPD78044F
Basic subseries for driving VFD. Display output total: 34
µ PD78044F with N-ch open-drain I/O. Display output total: 34
LCD drive
120-pin
µ PD780338
120-pin
µ PD780328
µPD780318
µ PD780308
µPD78064B
µPD78064
120-pin
100-pin
100-pin
100-pin
µ PD780308 with enhanced display function and timer. Segment signal output: 40 pins max.
µ PD780308 with enhanced display function and timer. Segment signal output: 32 pins max.
µ PD780308 with enhanced display function and timer. Segment signal output: 24 pins max.
µPD780308Y
µ PD78064 with enhanced SIO, and expanded ROM and RAM
EMI-noise reduced version of the µ PD78064
µ PD78064Y
Basic subseries for driving LCDs, on-chip UART
Bus interface supported
100-pin
80-pin
µ PD780948
µ PD78098B
µ PD78054 with IEBusTM controller
µ PD780702Y
µPD780703Y
µ PD780833Y
80-pin
80-pin
80-pin
On-chip IEBus controller
On-chip CAN controller
On-chip controller compliant with J1850 (Class 2)
µPD780816
Meter control
Specialized for CAN controller function
100-pin
µPD780958
80-pin
µPD780852
µPD780828A
For industrial meter control
On-chip automobile meter controller/driver
64-pin
80-pin
Remark:
On-chip CAN controller
For automobile meter driver. On-chip CAN controller
VFD (Vacuum Fluorescent Display) is referred to as FIPTM (Fluorescent Indicator Panel) in
some documents, but the functions of the two are the same.
User’s Manual U16504EE1V1UD00
29
Chapter 1
Outline (µPD780828A Subseries)
The major functional differences between the subseries are shown below.
Table 1-1:
Function
The major functional differences between the subseries
ROM
Capacity
(Bytes)
Subseries Name
Timer
8-bit 16-bit
WT
WDT
8-bit 10-bit 8-bit
A/D
A/D
D/A
I/O
VDD External
MIN Expansion
value
88
1.8 V
61
2.7 V
68
1.8 V
4 ch (UART: 1 ch) 60
2.7 V
Serial Interface
µPD78075B 32K to 40K
µPD78078
48K to 60K 4 ch
3 ch (UART: 1 ch)
2 ch
µPD78070A -
8 ch
1 ch
3 ch (time-division UART: 1 ch)
µPD780058 24K to 60K
1 ch
Control
1 ch
µPD780065 40K to 48K
µPD780078 48K to 60K 2 ch
2 ch
O
3 ch (UART: 2 ch) 52
-
8 ch
µPD780034A
8K to 32K
1 ch
3 ch (UART: 1 ch) 51
8K to 16K
-
-
µPD780988 16K to 60K 3 ch
Note
-
µPD780208 32K to 60K 2 ch
1 ch
1 ch
1.8 V
µPD780024A
8 ch
µPD78083
Inverter
control
1 ch (UART: 1 ch) 33
1 ch
-
8 ch
-
-
2 ch (UART: 2 ch) 47
4.0 V
74
2.7 V
40
4.5 V
8 ch
O
2 ch
µPD780232 16K to 24K 3 ch
-
-
VFD drive
4 ch
1 ch
-
-
µPD78044H 32K to 48K
1 ch
2 ch
1 ch
1 ch
8 ch
68
µPD78044F 16K to 40K
2.7 V
2 ch
µPD780338
54
µPD780328 48K to 60K 3 ch
2 ch
-
10 ch
1 ch 2 ch (UART: 1 ch) 62
µPD780318
1.8 V
70
LCD drive
1 ch
1 ch
µPD78064B 32K
2 ch
1 ch
-
3 ch (time-division UART: 1 ch)
µPD780308 48K to 60K
8 ch
-
-
57
2.0 V
79
4.0 V
69
2.7 V
2 ch (UART: 1 ch)
µPD78064
16K to 32K
µPD780948 60 K
Bus
µPD78098B 40K to 60K 2 ch
interface
supported
µPD780816 32K to 60K
Meter
control
2 ch
8 ch
1 ch
1 ch
1 ch
-
2 ch
2 ch
12 ch
-
2 ch (UART: 1 ch) 46
4.0
2.2 V
-
4.0 V
-
µPD780958 48K to 60K 4 ch
2 ch
-
1 ch
-
-
-
2 ch (UART: 1 ch) 69
Dashboard µPD780852 32K to 40K
3 ch
control
µPD780828A 32K to 60K
1 ch
1 ch
1 ch
5 ch
-
-
3 ch (UART: 1 ch)
56
59
Note: 16-bit timer: 2 channels
10-bit timer: 1 channel
30
O
3 ch (UART: 1 ch)
User’s Manual U16504EE1V1UD00
Chapter 1 Outline (µPD780828A Subseries)
1.7 Block Diagram
16-bit Timer TM2
3 x Capture with
Filter
TIO50/S27/P34
8-bit Timer TM50
TIO51/S22/P91
8-bit Timer TM51
Block Diagram
IC/VPP
TPO21/S21/P92
TI20/P64
TI21/P65
TI22/S23/P90
VDD0
VDD1
VSS0
VSS1
Figure 1-3:
System
Control
4.0 V - 5.5 V
X1
X2
RESET
8-bit Timer TM52
Port 0
P00 - P03
Port 1
P10 - P14
Port 2
P20 - P27
Port 3
P34 - P37
Port 4
P40 - P47
Port 5
P50 - P57
Port 6
P60 - P65
Port 8
P80 - P87
Port 9
P90 - P97
Watch Timer
Watchdog Timer
SCK30/S26/P35
SO30/S25/P36
SI30/S24/P37
Serial Interface
SIO30 3-wire mode
SCK31/S20/P93
SO31/SIO31/S19/P94
SI31/S18/P95
Serial Interface
SIO31
3-wire/2-wire mode
RxD0/P62
TxD0/P63
ANI0/P10
-ANI4/P14
AVDD/AVREF
AVSS
ROM
RAM
S0/P47 - S7/P40
UART0
S8/P87 - S15/P80
Interface
LCD
Controller
driver
A/D Converter
S16/P97 - S23/P90
S23/P37 - S27/P34
Power Fail
Detector
INTP0/P00
-INTP2/P02
78K/0
CPU
Core
CRxD
CTxD
Interrupt
Control
CCLK
DCAN
Interface
RAM
COM0 - COM3
VLCD
Standby Control
SM11/P20 - SM14/P23
PCL/SGOA/P61
Clock Output
Control
SGO/SGOF/P60
Sound Generator
Output
SM21/P24 - SM24/P27
Meter
Controller/
Driver
SM31/P50 - SM34/P53
SM41/P54 - SM44/P57
SMVDD
SMVDD
SMVSS
SMVSS
Remark:
The internal ROM and RAM capacity depends on the product.
User’s Manual U16504EE1V1UD00
31
Chapter 1
Outline (µPD780828A Subseries)
1.8 Overview of Functions
Table 1-2:
Item
ROM
Overview of Functions
µPD78F0828A
µPD780828A
µPD780826A
µPD780824A
59.5 Kbytes
Flash EE
60 Kbytes
Mask ROM
48 Kbytes
Mask ROM
32 Kbytes
Mask ROM
Hi-speed RAM
1024 bytes
Expansion RAM
2016 bytes
480 bytes
LCD Display RAM
28 bytes
Memory space
64 Kbytes
General register
8 bits - 32 registers
Main system clock
0.25 µs/0.5 µs/1 µs/2 µs/4 µs (at 8 MHz)
Instruction set
•
•
•
•
I/O port
59 in total
Input ports: 5
Output ports: 16
I/O ports: 38
A/D converter
8 bit x 5 channels
Serial I/F
3-wire mode: 1 channel
2-wire/3-wire mode: 1 channel
UART: 1 channel
Timer
16 bit timer / event counter: 1 channel
8 bit timer / event counter: 2 channels
8 bit interval timer: 1 channel
Watch timer: 1 channel
Watchdog timer: 1 channel
Timer output
3 outputs (8-bit PWM output × 2)
Clock output
8 MHz, 4 MHz, 2 MHz, 1 MHz, 500 KHz, 250 KHz, 125 KHz, 62.5 KHz
@fX = 8 MHz
Sound Generator
1 output
LCD
Segment output: 28, Common output: 4
CAN
1 channel
Vectored interrupt
Non-maskable interrupt: 1 (internal)
Maskable interrupt: 20 (internal)
External interrupt: 3
Software interrupt: 1
Operating voltage
range
VDD = 4.0 V to 5.5 V
Package
80-QFP (14 × 14)
32
(8 bit x 8 x 4 bank)
16-bit operation
Multiplication/division (8 bits × 8 bits, 16 bits ÷ 8 bits)
Bit manipulation (set, reset, test, boolean operation)
BCD adjustment, etc.
User’s Manual U16504EE1V1UD00
Chapter 1 Outline (µPD780828A Subseries)
1.9 Differences between Flash and Mask ROM version
The differences between the two versions are shown in the table below. Differences of the electrical
specification are given in the data sheet.
Table 1-3:
Differences between Flash and Mask ROM version
Flash Version
Mask ROM Version
ROM
Flash EEPROM
Mask ROM
VPP Pin
Yes
None (IC pin)
480 bytes µPD780824A
Internal Expansion
RAM
2016 bytes
480 bytes µPD780826A
2016 bytes µPD780828A
User’s Manual U16504EE1V1UD00
33
[MEMO]
34
User’s Manual U16504EE1V1UD00
Chapter 2
Pin Function (µPD780828A Subseries)
2.1 Pin Function List
Normal Operating Mode Pins / Pin Input/Output Types
Table 2-1: Pin Input/Output Types (1/2)
Input/Output
Pin Name
P00
Input/Output
Input/Output
After
Reset
Input
INTP1
Input
INTP2
Input
CCLK
Input
ANI0-ANI4
Input
P20
SM11
Hi-z
P21
SM12
Hi-z
P22
SM13
Hi-z
SM14
Hi-z
SM21
Hi-z
P25
SM22
Hi-z
P26
SM23
Hi-z
P27
SM24
Hi-z
TI50/TO50/S27
Input
SCK30/S26
Input
SO30/S25
Input
SI30/S24
Input
S0-S7
Input
P50
SM31
Hi-z
P51
SM32
Hi-z
P52
SM33
Hi-z
SM34
Hi-z
SM41
Hi-z
P55
SM42
Hi-z
P56
SM43
Hi-z
P57
SM44
Hi-z
P01
P02
P10-P14
P23
P24
P34
P35
Input/Output P36
P37
Input/Output P40-P47
Input/Output
Alternate Function
INTP0
P03
Input
Function
P53
P54
Port 0
4 bit input / output port
input / output mode can be specified bit-wise
If used as an input port, a pull-up resistor can be
connected by software bit-wise
Port 1
5 bit input port
Port 2
8 bit output port
Port 3
4 bit input / output port
input / output mode can be specified bit-wise
If used as an input port, a pull-up resistor can be
connected by software bit-wise
This port can be used as a segment signal output
port or an I/O port in 1 bit unit by setting port function
Port 4
8 bit input / output port
input / output mode can be specified bit-wise
If used as an input port, a pull-up resistor can be
connected by software bit-wise
This port can be used as a segment output port or
an I/O port, in 8 bit unit by setting port function
Port 5
8 bit output port
User’s Manual U16504EE1V1UD00
35
Chapter 2 Pin Function (µPD780828A Subseries)
Table 2-1: Pin Input/Output Types (2/2)
Input/Output
Pin Name
Function
P60
P61
Input/Output
P62
P63
P64
Port 6
6 bit input / output port
input / output mode can be specified bit-wise
If used as an input port, a pull-up resistor can be
connected by software bit-wise
P65
Input/Output P80-P87
Port 7
8 bit input / output port
input / output mode can be specified bit-wise
If used as an input port, a pull-up resistor can be
connected by software bit-wise
This port can be used as a segment signal output
port or an I/O port in 1 bit units by setting port
function
P90
P91
P92
Input/Output
P93
P94
P95
P96
Port 9
8 bit input / output port
input / output mode can be specified bit-wise
If used as an input port, a pull-up resistor can be
connected by software bit-wise
This port can be used as a segment signal output
port or an I/O port in 1 bit units by setting port
function
P97
36
User’s Manual U16504EE1V1UD00
Alternate Function
After
Reset
SGOF/SGO
Input
SGOA/PCL
Input
RXD0
Input
TXD0
Input
TI20
Input
TI21
Input
S15-S8
Input
TI22/S23
Input
TI51/TO51/S22
Input
TPO/S21
Input
SCK31/S20
Input
SO31/SIO31/S19
Input
SI31/S18
Input
S17
Input
S16
Input
Chapter 2 Pin Function (µPD780828A Subseries)
2.2 Non-Port Pins
Table 2-2:
Pin Name
Input/Output
Non-Port Pins (1/2)
Function
After
Reset
INTP0
INTP1
Alternate
Function Pin
P00
Input
External interrupts with specifiable valid edges (risInput
ing edge, falling edge, both rising and falling edges)
INTP2
P01
P02
SI30
Input
Serial interface serial data input
Input
P37/S24
SI31
Input
Serial interface serial data input
Input
P95/S18
SO30
Output
Serial interface serial data output
Input
P36/S25
SO31
Output
Serial interface serial data output
Input
P94/SIO31/S19
SCK30
Input, Output Serial interface serial clock input / output
Input
P35/S26
SCK31
Input, Output Serial interface serial clock input / output
Input
P93/S20
SIO31
Input, Output Serial interface serial data input / output
Input
P94/SO31/S19
RXD0
Input
Asynchronous serial interface data input
Input
P62
TXD0
Output
Asynchronous serial interface data output
Input
P63
CRXD
Input
CAN serial data input
Input
-
CTXD
Output
CAN serial data output
Output
-
TI20
Input
Capture trigger input
P64
TI21
Input
Capture trigger input
P65
TI22
Input
Capture trigger input
P90/S23
TI50
Input
External count clock input to 8-bit timer (TM50)
P34/TO50/S27
TI51
Input
External count clock input to 8-bit timer (TM51)
P91/TO51/S22
16-bit timer output
P92/S21
TP0
TO50
Output
TO51
PCL
8-bit timer output (also used for PWM output)
Input
8-bit timer output (also used for PWM output)
Output
Clock output (for main system clock trimming)
P34/TI50/S27
P91/TI51/S22
Input
P61/SGOA
S0-S7
P40-P47
S8-S15
P80-P87
S16-S17
P97-P96
S18
P95/SI31
S19
P94/SO31/SIO31
S20
P93/SCK31
S21
Output
Segment signal output of LCD controller / driver
Input
P92/TPO
S22
P91/TO51/TI51
S23
P90/TI22
S24
P37/SI30
S25
P36/SO30
S26
P35/SCK30
S27
P34/TO50/TI50
COM0-COM3 Output
Common signal output of LCD controller /driver
User’s Manual U16504EE1V1UD00
Output
-
37
Chapter 2 Pin Function (µPD780828A Subseries)
Table 2-2:
Pin Name
Input/Output
Non-Port Pins (2/2)
After
Reset
Function
Alternate
Function Pin
VLCD
-
LCD drive voltage
-
-
SGO
Output
Sound generator output
Input
P60/SGOF
SGOA
Output
Sound generator amplitude output
Input
P61/PCL
SGOF
Output
Sound generator frequency output
Input
P60/SGO
ANI0 to ANI4 Input
AD converter analog input
Input
P10-P14
AVDD /AVREF -
AD converter reference voltage input. Power supply
of the AD converter.
-
AVSS
AD converter ground potential. Connect to VSS
-
-
-
SM11-SM14
SM21-SM24
SM31-SM34
P20-P23
Output
Meter control output
Hi-z
SM41-SM44
P24-P27
P50-P53
P54-P57
SMVDD
-
Meter C/D power supply
-
-
SMVSS
-
Meter C/D ground
-
-
RESET
Input
System reset input
-
-
X1
-
Crystal connection for main system clock
-
-
X2
-
Crystal connection for main system clock
-
-
VDD0,VDD1
-
Positive power supply
-
-
VSS0,VSS1
-
Ground potential
-
-
VPP
-
High voltage supply for flash programming
(only flash version)
-
IC
IC
-
Internal connection. Connect directly to VSS
(only Mask ROM version)
-
VPP
38
User’s Manual U16504EE1V1UD00
Chapter 2 Pin Function (µPD780828A Subseries)
2.3 Description of Pin Functions
2.3.1 P00 to P03 (Port 0)
This is an 4-bit input/output port. Besides serving as input/output port the external interrupt input is
implemented.
(1)
Port mode
P00 to P03 function as input/output ports. P00 to P03 can be specified for input or output bit-wise
with a port mode register. When they are used as input ports, pull-up resistors can be connected
to them by defining the pull-up resistor option register.
(2)
Control mode
In this mode this port operates as external interrupt input.
(a) INTP0 to INTP2
INTP0 to INTP2 are external input pins which can specify valid edges (rising, falling or rising
and falling) of this external interrupt pins.
(b) CCLK
CCLK is the input pin for an external CAN clock.
2.3.2 P10 to P14 (Port 1)
These pins constitute a 5-bit input only port. In addition, they are also used to input A/D converter analog signals. The following operating modes can be specified bit-wise.
(1)
Port mode
In this mode, P10 to P14 function as a 5-bit input only port.
(2)
Control mode
In this mode, P10 to P14 function as A/D converter analog input pins (ANI0 to ANI4).
2.3.3 P20 to P27 (Port 2)
These pins constitute an 8-bit output only port. In addition they are also used as PWM output pins to
control meters.
(1)
Port mode
In this mode, P20 to P27 function as an 8-bit output only port.
(2)
Control mode
In this mode, P20 to P27 function as PWM output pins (SM11 to SM14 and SM21 to SM24) for
meter control.
User’s Manual U16504EE1V1UD00
39
Chapter 2 Pin Function (µPD780828A Subseries)
2.3.4 P34 to P37 (Port 3)
These are 4-bit input/output ports. Besides serving as input/output ports, they function as data input/
output to/from and clock input/out of the serial interface. Additionally they function as timer input/output
and segment signal output of the LCD controller/driver.
The port mode and the port function can be specified bit-wise.
(1)
Port mode
These ports function as 4-bit input/output ports. They can be specified bit-wise as input or output
ports with the port mode register 3.
(2)
Control mode
These ports function as timer input/output, as serial interface data input/output, serial clock
input/output and as LCD segment output.
(a) SI30, SO30
Serial interface serial data input/output pins.
(b) SCK30
Serial interface serial clock input/output pin.
(c) TI50
Pin for external count clock input to 8-bit timer/event counter.
(d) TO50
Pin for output of the 8-bit timer/event counter.
(e) S24 to S27
Pins for segment output signals of the LCD controller/driver.
Caution:
When this port is used as a serial interface, the I/O function and output latches must
be set according to the function the user requires.
2.3.5 P40 to P47 (Port 4)
This is an 8-bit input/output port. Besides serving as input/output port, they function as segment signal
output pins of the LCD controller/driver.
The following operating modes can be specified bit-wise or byte-wise.
(1)
Port mode
These ports function as 8-bit input/output ports. They can be specified bit-wise as input or output
ports with port mode register 4.
(2)
Control mode
These port function as segment output signal pins (S0 to S7) of the LCD controller/driver and can
specified byte-wise.
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Chapter 2 Pin Function (µPD780828A Subseries)
2.3.6 P50 to P57 (Port 5)
These pins constitute an 8-bit output only port. In addition they also function as PWM output pins to
control meters.
(1)
Port mode
In this mode, P50 to P57 function as an 8-bit output only port.
(2)
Control mode
In this mode, P50 to P57 function as PWM output pins (SM31 to SM34 and SM41 to SM44) for
meter control.
2.3.7 P60 to P65 (Port 6)
These are 6-bit input/output ports. Beside serving as input/output ports, they function as timer input,
clock output, sound generator output and as input/output of the asynchronous serial interface.
The following operating modes can be specified bit-wise.
(1)
Port mode
These ports function as 5-bit input/output ports. They can be specified bit-wise as input or output
ports with port mode register 3.
(2)
Control mode
These ports function as timer input, clock output, as input/output of the asynchronous serial interface and sound generator output.
(a) TI20, TI21
Pins for external capture trigger input to the 16-bit timer capture registers of TM2.
(b) PCL
Clock output pin.
(c) SGO, SGOA and SGOF
Pins for separate or composed signal output of the sound generator.
(d) (e) RXD0, TXD0
Asynchronous serial interface data input/output pins.
Caution:
When this port is used as a serial interface, the I/O function and output latches must
be set according to the function the user requires.
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Chapter 2 Pin Function (µPD780828A Subseries)
2.3.8 P80 to P87 (Port 8)
These are 8-bit input/output ports. Besides serving as input/output ports, they function as segment
signal output pins of the LCD controller/driver.
The following operating modes can be specified bit-wise or byte-wise.
(1)
Port mode
These ports function as 8-bit input/output ports. They can be specified bit-wise as input or output
ports with port mode register 8.
(2)
Control mode
These ports function as segment output signal pins (S8 to S15) of the LCD controller/driver.
2.3.9 P90 to P97 (Port 9)
These are 8-bit input/output ports. Besides serving as input/output ports, they function as segment signal output pins of the LCD controller/driver, timer input/output and as input/output of the serial interface.
The following operating modes can be specified bit-wise or byte-wise.
(1)
Port mode
These ports function as 8-bit input/output ports. They can be specified bit-wise as input or output
ports with port mode register 9.
(2)
Control mode
These ports function as timer input/output, timer capture input, as timer output and as LCD segment output.
(a) TI22
Pin for external capture trigger input to the 16-bit timer capture register of TM2.
(b) TPO
Pin for output of the 16-bit timer (TM2).
(c) TI51
Pin for external count clock input to 8-bit timer/event counter.
(d) TO51
Pin for output of the 8-bit timer/event counter.
(e) S16 to S23
Pins for segment output signals of the LCD controller/driver.
(f) SCK31
Serial interface serial clock input/output pin.
(g) SI31, SO31, SIO31
Serial interface serial data input/output pins.
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Chapter 2 Pin Function (µPD780828A Subseries)
2.3.10 CTXD
This pin functions as CAN-controller transmit output.
2.3.11 CRXD
This pin functions as CAN-controller receive input.
2.3.12 CCLK
This pin functions as external CAN-controller clock input.
2.3.13 COM0 to COM3
These are LCD controller/driver common signal output pins. They output common signals under the following condition:
- 4-time-division is performed in 1/3 bias mode.
2.3.14 VLCD
This pin supplies a voltage to drive an LCD.
2.3.15 AVDD / AVREF
A/D converter reference voltage input pin and the power supply for the A/D-converter. When A/D converter is not used, connect this pin to VDD.
2.3.16 AVSS
This is a ground voltage pin of A/D converter. Always use the same voltage as that of the VSS pin even
when A/D converter is not used.
2.3.17 RESET
This is a low-level active system reset input pin.
2.3.18 X1 and X2
Crystal resonator connect pins for main system clock oscillation. For external clock supply, input it to
X1.
2.3.19 SMVDD
This pin supplies a positive power to the meter controller/driver.
2.3.20 SMVSS
This is the ground pin of the meter controller/driver.
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Chapter 2 Pin Function (µPD780828A Subseries)
2.3.21 VDD0, VDD1
VDD0 is the positive power supply pin for ports. VDD1 is the positive power supply pin for blocks other
than ports.
2.3.22 VSS0, VSS1
VSS0 is the ground pin for ports. VSS1 is the ground pin for blocks other than ports.
2.3.23 VPP (µPD78F0828A only)
High-voltage apply pin for FLASH programming mode setting. Connect this pin directly to VSS in normal
operating mode.
2.3.24 IC (Mask ROM version only)
The IC (Internally Connected) pin is provided to set the test mode to check the µPD78F0828A at
delivery. Connect it directly to the VSS with the shortest possible wire in the normal operating mode.
When a voltage difference is produced between the IC pin and VSS pin because the wiring between
those two pins is too long or an external noise is input to the IC pin, the user’s program may not run normally.
Figure 2-1:
Vss
Connection of IC Pins
IC
As short as possible
Caution:
44
Connect IC pins to VSS pins directly.
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Chapter 2 Pin Function (µPD780828A Subseries)
2.4 Pin I/O Circuits and Recommended Connection of Unused Pins
The input/output circuit type of each pin and recommended connection of unused pins are shown in the
following table.
For the input/output circuit configuration of each type, see tTable 2-3, “Types of Pin Input/Output Circuits,” on page 45.
Table 2-3:
Pin Name
Types of Pin Input/Output Circuits (1/2)
Input/Output
Circuit Type
I/O
8-A
I/O
9
I
Connect to VDD or VSS directly
4
O
Leave open.
I/O
Input: Connect to VDD or VSS via a resistor individually.
Output: Leave open.
I/O
Input: Connect to VDD or VSS via a resistor individually.
Output: Leave open.
Recommended Connection for Unused Pins
P00/INTP0
P01/INT01
P02/INT02
Input: Connect to VDD or VSS via a resistor individually.
Output: Leave open.
P03/CCLK
P10/ANI0
P11/ANI1
P12/ANI2
P13/ANI3
P14/ANI4
P20/SM11
P21/SM12
P22/SM13
P23/SM14
P24/SM21
P25/SM22
P26/SM23
P27/SM24
P34/TI50/TO50/S27
P35/SCK30/S26
17-B
P36/SO30/S25
17-A
P37/SI30/S24
17-B
P40/S7
P41/S6
P42/S5
P43/S4
P44/S3
17-A
P45/S2
P46/S1
P47/S0
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Chapter 2 Pin Function (µPD780828A Subseries)
Table 2-3:
Types of Pin Input/Output Circuits (2/2)
Input/Output
Circuit Type
I/O
4
O
Leave open.
I/O
Input: Connect to VDD or VSS via a resistor individually.
Output: Leave open.
I/O
Input: Connect to VDD or VSS via a resistor individually.
Output: Leave open.
I/O
Input: Connect to VDD or VSS via a resistor individually.
Output: Leave open.
18
O
Leave open
VLCD
-
-
Connect to VSS
CRXD
1
I
Connect to VDD
CTXD
2
O
Leave open.
RESET
1
I
-
AVDD / AVREF
-
-
Connect to VDD
AVSS
-
-
Connect to VSS
-
-
Connect directly to VSS
Pin Name
Recommended Connection for Unused Pins
P50/SM31
P51/SM32
P52/SM33
P53/SM34
P54/SM41
P55/SM42
P56/SM43
P57/SM44
P60/SGOF/SGO
5
P61/RCL/SGOA
5
P62/RXD0
8
P63/TXD0
5
P64/TI20
8
P65/TI21
8
P80/S15
P81/S14
P82/S13
P83/S12
P84/S11
17-B
P85/S10
P86/S9
P87/S8
P90/TI22/S23
17-B
P91/TI51/TO50/S22
17-B
P92/TPO/S21
17-A
P93/SCK31/S20
P94/SO31/SIO31/S19
P95/SI31/S18
17-B
P96/S17
P97/S16
COM0-COM3
IC
VPP
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Chapter 2 Pin Function (µPD780828A Subseries)
Figure 2-2:
Pin Input/Output Circuits (1/3)
Type 5
Type 1
V DD
Data
P-ch
IN/OUT
IN
Output
disable
N-ch
Input
disable
Type 8
Type 2
VDD
VDD
Data
P-ch
IN/OUT
P-ch
Data
OUT
Output
disable
N-ch
N-ch
Type 8-A
Type 4
V DD
Pullup
enable
VDD
Data
P-ch
V DD
OUT
Output
disable
P-ch
Data
N-ch
P-ch
IN/OUT
Output
disable
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N-ch
47
Chapter 2 Pin Function (µPD780828A Subseries)
Figure 2-2:
Pin Input/Output Circuits (2/3)
Type 9
Type 17
VLC0
P-ch
VLC1
P-ch
OUT
N-ch
Comparator
+
-
P-ch
IN
SEG
Data
N-ch
V REF (Threshold Voltage)
P-ch
N-ch
VLC2
Input
enable
N-ch
Type 17-A
Type 17-B
VDD
Pullup
enable
V DD
Pullup
enable
P-ch
P-ch
V DD
VDD
Data
Data
P-ch
P-ch
IN/OUT
IN/OUT
Output
disable
N-ch
Output
disable
N-ch
Input
enable
V LC0
VLC0
P-ch
P-ch
V LC1
VLC1
N-ch
P-ch
SEG
Data
SEG
Data
P-ch
N-ch
P-ch
V LC2
VLC2
N-ch
48
N-ch
P-ch
N-ch
User’s Manual U16504EE1V1UD00
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Chapter 2 Pin Function (µPD780828A Subseries)
Figure 2-2:
Pin Input/Output Circuits (3/3)
Type 18
P-ch
VLC0
VLC1
OUT
COM
VLC2
N-ch
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[MEMO]
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CPU Architecture
3.1 Memory Space
The memory map of the µPD780824A is shown in Figure 3-1.
Figure 3-1:
FFFFH
FF20H
FF1FH
FF00H
FEFFH
FEE0H
FEDFH
Memory Map of the µPD780824A
Special Function Register
(SFR) 256 x 8 bits
General Registers
32 x 8 bits
Internal High-speed RAM
1024 x 8 bits
FE20H
FB00H
FAFFH
FA80H
FA7FH
FA64H
FA63H
Not usable
LCD Display RAM
28 x 4 bits
7FFFH
Not usable
Program Area
1000H
0FFFH
F7E0H
F7DFH
F600H
F5FFH
CALLF Entry Area
Expansion RAM
480 Bytes
(shared with DCAN)
Program Area
0080H
Not usable
8000H
7FFFH
007FH
CALLT Table Area
Internal ROM
32 Kbytes
0000H
0800H
07FFH
0040H
003FH
Vector Table Area
0000H
Note: In the expansion RAM between F600H and F7DFH it is not possible to do code execution.
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Chapter 3 CPU Architecture
The memory map of the µPD780826A is shown in Figure 3-2.
Figure 3-2:
FFFFH
FF20H
FF1FH
FF00H
FEFFH
FEE0H
FEDFH
Memory Map of the µPD780826A
Special Function Register
(SFR) 256 x 8 bits
General Registers
32 x 8 bits
Internal High-speed RAM
1024 x 8 bits
FE20H
FB00H
FAFFH
FA80H
FA7FH
FA64H
FA63H
Not usable
LCD Display RAM
28 x 4 bits
BFFFH
Not usable
Program Area
1000H
0FFFH
F7E0H
F7DFH
F600H
F5FFH
CALLF Entry Area
Expansion RAM
480 Bytes
(shared with DCAN)
0800H
07FFH
Not usable
0080H
007FH
C000H
BFFFH
CALLT Table Area
Internal ROM
48 Kbytes
0000H
Program Area
0040H
003FH
Vector Table Area
0000H
Note: In the expansion RAM between F600H and F7DFH it is not possible to do code execution.
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The memory map of the µPD780828A is shown in Figure 3-3.
Figure 3-3:
FFFFH
FF20H
FF1FH
FF00H
FEFFH
FEE0H
FEDFH
Memory Map of the µPD780828A
Special Function Register
(SFR) 256 x 8 bits
General Registers
32 x 8 bits
Internal High-speed RAM
1024 x 8 bits
FE20H
FB00H
FAFFH
FA80H
FA7FH
FA64H
FA63H
Not usable
LCD Display RAM
28 x 4 bits
Not usable
EFFFH
Program Area
F7E0H
F7DFH
F600H
F5FFH
F400H
F3FFH
Expansion RAM
480 Bytes
(shared with DCAN)
Expansion RAM
512 Bytes
Expansion RAM
1024 Bytes
F000H
EFFFH
1000H
0FFFH
CALLF Entry Area
0800H
07FFH
Program Area
0080H
007FH
CALLT Table Area
0040H
003FH
Internal ROM
60 Kbytes
0000H
Vector Table Area
0000H
Notes: 1. In the expansion RAM between F000H and F3FFH it is possible to do code execution.
2. In the expansion RAM between F400H and F7DFH it is not possible to do code execution.
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Chapter 3 CPU Architecture
The memory map of the µPD78F0828A is shown in Figure 3-4.
Figure 3-4:
FFFFH
FF20H
FF1FH
FF00H
FEFFH
FEE0H
FEDFH
Memory Map of the µPD78F0828A
Special Function Register
(SFR) 256 x 8 bits
General Registers
32 x 8 bits
Internal High-speed RAM
1024 x 8 bits
FE20H
FB00H
FAFFH
FA80H
FA7FH
FA64H
FA63H
Not usable
LCD Display RAM
28 x 4 bits
Not usable
F7E0H
F7DFH
F600H
F5FFH
F000H
EFFFH
Program Area
Expansion RAM
480 Bytes
(shared with DCAN)
Expansion RAM
1536 Bytes
Not usable
EE00H
EDFFH
1000H
0FFFH
CALLF Entry Area
0800H
07FFH
Program Area
0080H
007FH
CALLT Table Area
Internal ROM
59.5 Kbytes
0000H
EDFFH
0040H
003FH
Vector Table Area
0000H
Notes: 1. In the expansion RAM between F000H and F5FFH it is possible to do code execution.
2. In the expansion RAM between F600H and F7DFH it is not possible to do code execution.
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Chapter 3 CPU Architecture
3.1.1 Internal program memory space
The internal program memory space stores programs and table data. This is generally accessed by the
program counter (PC).
The µPD780828A Subseries have various size of internal ROMs or Flash EPROM as shown below.
Table 3-1:
Part Number
Internal ROM Capacities
Internal ROM
Type
Capacity
µPD780824A
Mask ROM
32768 x 8-bits
µPD780826A
Mask ROM
49152 x 8-bits
µPD780828A
Mask ROM
61440 x 8-bits
µPD78F0828A
Flash EEPROM
60928 x 8-bits
The internal program memory is divided into three areas: vector table area, CALLT instruction table
area, and CALLF instruction table area. These areas are described on the next page.
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Chapter 3 CPU Architecture
(1)
Vector table area
The 64-byte area 0000H to 003FH is reserved as a vector table area. The RESET input and program start addresses for branch upon generation of each interrupt request are stored in the vector
table area.
Of the 16-bit address, low-order 8 bits are stored at even addresses and high-order 8 bits are
stored at odd addresses.
Table 3-2:
(2)
Vectored Interrupts
Vector Table Address
Interrupt Request
0004H
INWDT
0006H
INTAD
0008H
INTOVF
000AH
INTTM20
000CH
INTTM21
000EH
INTTM22
0010H
INTP0
0012H
INTP1
0014H
INTP2
0016H
INTCE
0018H
INTCR
001AH
INTCT0
001CH
INTCT1
001EH
INTCSI30
0020H
INTSER0
0022H
INTSR0
0024H
INTST0
0026H
INTTM50
0028H
INTTM51
002AH
INTTM52
002EH
INTWTI
0030H
INTWT
0032H
INTCSI31
003EH
BRK
CALLT instruction table area
The 64-byte area 0040H to 007FH can store the subroutine entry address of a 1-byte call instruction (CALLT).
(3)
CALLF instruction entry area
The area 0800H to 0FFFH can perform a direct subroutine call with a 2-byte call instruction
(CALLF).
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3.1.2 Internal data memory space
The µPD780828A Subseries units incorporate the following RAMs.
(1)
Internal high-speed RAM
Table 3-3:
Internal high-speed RAM
Device
Internal High Speed RAM
µPD780824A
1024 x 8 bits (FB00H to FEFFH)
µPD780826A
1024 x 8 bits (FB00H to FEFFH)
µPD780828A
1024 x 8 bits (FB00H to FEFFH)
µPD78F0828A
1024 x 8 bits (FB00H to FEFFH)
The 32-byte area FEE0H to FEFF is allocated with four general purpose register banks composed
of eight 8-bit registers.
The internal high-speed RAM has to be used as stack memory.
(2)
LCD-Display RAM
Buffer RAM is allocated to the 28 x 4 bits area from FA64H to FA7FH. LCD-Display RAM can also
be used as normal RAM.
(3)
Internal expansion RAM (including sharing with DCAN)
Table 3-4:
Internal expansion RAM (including sharing with DCAN)
Device
Internal Expansion RAM
µPD780824A
480 x 8 bits (F600H to F7DFH)
µPD780826A
480 x 8 bits (F600H to F7DFH)
µPD780828A
2016 x 8 bits (F000H to F7DFH)
µPD78F0828A
2016 x 8 bits (F000H to F7DFH)
3.1.3 Special function register (SFR) area
An on-chip peripheral hardware special function register (SFR) is allocated in the area FF00H to
FFFFH. (Refer to Table 3-5, “Special Function Register List,” on page 67).
Caution:
Do not access addresses where the SFR is not assigned.
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Chapter 3 CPU Architecture
3.1.4 Data memory addressing
The µPD780828A Subseries is provided with a verity of addressing modes which take account of memory manipulability, etc. Special addressing methods are possible to meet the functions of the special
function registers (SFRs) and general registers. The data memory space is the entire 64K-byte space
(0000H to FFFFH).
Figures 3-5 to 3-8 show the data memory addressing modes.
For details of addressing, refer to 3.4 ”Operand Address Addressing” on page 74.
Figure 3-5:
FFFFH
FF20H
FF1FH
FF00H
FEFFH
FEE0H
FEDFH
FE20H
Data Memory Addressing of µPD780824A
Special Function Register
(SFR) 256 x 8 bits
General Registers
32 x 8 bits
SFR Addressing
Register Addressing
Short Direct
Addressing
Internal High-speed RAM
1024 x 8 bits
FB00H
FAFFH
FA80H
FA7FH
FA64H
FA63H
Not usable
LCD Display RAM
28 x 4 bits
Direct
Addressing
Register
Indirect
Addressing
Based
Addressing
Not usable
F7E0H
F7DFH
F600H
F5FFH
Based
Indexed
Addressing
Expansion RAM
480 x 8 bits
(shared with DCAN)
Not usable
8000H
7FFFH
Internal Mask ROM
32768 x 8 bits
0000H
Note: In the expansion RAM between F600H and F7DFH it is not possible to do code execution.
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Chapter 3 CPU Architecture
Figure 3-6:
FFFFH
FF20H
FF1FH
FF00H
FEFFH
FEE0H
FEDFH
FE20H
Data Memory Addressing of µPD780826A
Special Function Register
(SFR) 256 x 8 bits
General Registers
SFR Addressing
Register Addressing
32 x 8 bits
Short Direct
Addressing
Internal High-speed RAM
1024 x 8 bits
FB00H
FAFFH
FA80H
FA7FH
FA64H
FA63H
Not usable
LCD Display RAM
28 x 4 bits
Direct
Addressing
Register
Indirect
Addressing
Based
Addressing
Not usable
F7E0H
F7DFH
F600H
F5FFH
Based
Indexed
Addressing
Expansion RAM
480 x 8 bits
(shared with DCAN)
Not usable
C000H
BFFFH
Internal Mask ROM
49152 x 8 bits
0000H
Note: In the expansion RAM between F600H and F7DFH it is not possible to do code execution.
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Chapter 3 CPU Architecture
Figure 3-7:
FFFFH
FF20H
FF1FH
FF00H
FEFFH
FEE0H
FEDFH
FE20H
Data Memory Addressing of µPD780828A
Special Function Register
(SFR) 256 x 8 bits
General Registers
32 x 8 bits
SFR Addressing
Register Addressing
Short Direct
Addressing
Internal High-speed RAM
1024 x 8 bits
FB00H
FAFFH
FA80H
FA7FH
FA64H
FA63H
Not usable
LCD Display RAM
28 x 4 bits
Not usable
F7E0H
F7DFH
F600H
F5FFH
F400H
F3FFH
F000H
EFFFH
Expansion RAM
480 x 8 bits
(shared with DCAN)
Direct
Addressing
Register
Indirect
Addressing
Based
Addressing
Based
Indexed
Addressing
Expansion RAM
512 x 8 bits
Expansion RAM
1024 x 8 bits
Internal Mask ROM
61440 x 8 bits
0000H
Notes: 1. In the expansion RAM between F000H and F3FFH it is possible to do code execution.
2. In the expansion RAM between F400H and F7DFH it is not possible to do code execution.
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Figure 3-8:
FFFFH
FF20H
FF1FH
FF00H
FEFFH
FEE0H
FEDFH
FE20H
Data Memory Addressing of µPD78F0828A
Special Function Register
(SFR) 256 x 8 bits
General Registers
SFR Addressing
Register Addressing
32 x 8 bits
Short Direct
Addressing
Internal High-speed RAM
1024 x 8 bits
FB00H
FAFFH
FA80H
FA7FH
FA64H
FA63H
F7E0H
F7DFH
Not usable
LCD Display RAM
28 x 4 bits
Direct
Addressing
Register
Indirect
Addressing
Not usable
Based
Addressing
Expansion RAM
480 x 8 bits
(shared with DCAN)
Based
Indexed
Addressing
F600H
F5FFH
Expansion RAM
1536 x 8 bits
F000H
EFFFH
Not usable
EE00H
EDFFH
Flash EEPROM
60928 x 8 bits
0000H
Notes: 1. In the expansion RAM between F000H and F5FFH it is possible to do code execution.
2. In the expansion RAM between F600H and F7DFH it is not possible to do code execution.
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Chapter 3 CPU Architecture
3.2 Processor Registers
The µPD780828A Subseries units incorporate the following processor registers.
3.2.1 Control registers
The control registers control the program sequence, statuses, and stack memory. The control registers
consist of a program counter, a program status word and a stack pointer.
(1)
Program counter (PC)
The program counter is a 16-bit register which holds the address information of the next program
to be executed.
In normal operation, the PC is automatically incremented according to the number of bytes of the
instruction to be fetched. When a branch instruction is executed, immediate data and register contents are set.
RESET input sets the reset vector table values at addresses 0000H and 0001H to the program
counter.
Figure 3-9:
Program Counter Configuration
15
0
PC
(2)
Program status word (PSW)
The program status word is an 8-bit register consisting of various flags to be set/reset by instruction execution.
Program status word contents are automatically stacked upon interrupt request generation or
PUSH PSW instruction execution and are automatically reset upon execution of the RETB, RETI
and POP PSW instructions.
RESET input sets the PSW to 02H.
Figure 3-10:
Program Status Word Configuration
7
0
IE
62
Z
RBS1
AC
RBS0
0
ISP
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Chapter 3 CPU Architecture
(a) Interrupt enable flag (IE)
This flag controls the interrupt request acknowledge operations of the CPU.
When 0, the IE is set to interrupt disabled (DI) status. All interrupts except non-maskable interrupt
are disabled.
When 1, the IE is set to interrupt enabled (EI) status and interrupt request acknowledge is controlled with an in-service priority flag (ISP), an interrupt mask flag for various interrupt sources, and a
priority specification flag.
The IE is reset to (0) upon DI instruction execution or interrupt request acknowledgement and is
set to (1) upon EI instruction execution.
(b) Zero flag (Z)
When the operation result is zero, this flag is set (1). It is reset (0) in all other cases.
(c) Register bank select flags (RBS0 and RBS1)
These are 2-bit flags to select one of the four register banks.
In these flags, the 2-bit information which indicates the register bank selected by SEL RBn instruction execution is stored.
(d) Auxiliary carry flag (AC)
If the operation result has a carry from bit 3 or a borrow at bit 3, this flag is set (1). It is reset (0) in
all other cases.
(e) In-service priority flag (ISP)
This flag manages the priority of acknowledge able maskable vectored interrupts. When 0,
acknowledgment of the vectored interrupt request specified to low-order priority with the priority
specify flag registers (PR0L, PR0H, and PR1L) is disabled. Whether an actual interrupt request is
acknowledged or not is controlled with the interrupt enable flag (IE).
(f) Carry flag (CY)
This flag stores overflow and underflow upon add/subtract instruction execution. It stores the shiftout value upon rotate instruction execution and functions as a bit accumulator during bit manipulation instruction execution.
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Chapter 3 CPU Architecture
(3)
Stack pointer (SP)
This is a 16-bit register to hold the start address of the memory stack area. Only the internal highspeed RAM area can be set as the stack area.
Figure 3-11:
Stack Pointer Configuration
15
0
SP
The SP is decremented ahead of write (save) to the stack memory and is incremented after read
(reset) from the stack memory.
Each stack operation saves/resets data as shown in Figures 3-12 and 3-13.
Caution:
Since RESET input makes SP contents indeterminate, be sure to initialize the SP
before instruction execution.
Figure 3-12:
Data to be Saved to Stack Memory
PUSH rp Instruction
Interrupt and
BRK Instruction
CALL, CALLF, and
CALLT Instruction
SP
SP
SP _ 2
SP
SP _ 2
PC7 to PC0
Register Pair Lower
SP _ 2
PC7 to PC0
SP _ 2
PC15 to PC8
SP _ 1
Register Pair Upper
SP _ 1
PC15 to PC8
SP _ 1
PSW
SP
SP
Figure 3-13:
Data to be Reset to Stack Memory
POP rp Instruction
RETI and RETB
Instruction
RET Instruction
SP
Register Pair Lower
SP
PC7 to PC0
SP
PC7 to PC0
SP + 1
Register Pair Upper
SP + 1
PC15 to PC8
SP + 1
PC15 to PC8
SP + 2
PSW
SP + 2
SP
SP + 2
SP
64
SP _ 3
SP _ 2
SP
SP
SP _ 3
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Chapter 3 CPU Architecture
3.2.2 General registers
A general register is mapped at particular addresses (FEE0H to FEFFH) of the data memory. It consists
of 4 banks, each bank consisting of eight 8-bit registers (X, A, C, B, E, D, L, and H).
Each register can also be used as an 8-bit register. Two 8-bit registers can be used in pairs as a 16-bit
register (AX, BC, DE, and HL).
They can be described in terms of function names (X, A, C, B, E, D, L, H, AX, BC, DE, and HL) and
absolute names (R0 to R7 and RP0 to RP3).
Register banks to be used for instruction execution are set with the CPU control instruction (SEL RBn).
Because of the 4-register bank configuration, an efficient program can be created by switching between
a register for normal processing and a register for interruption for each bank.
Figure 3-14:
General Register Configuration
(a) Absolute Name
16-Bit Processing
8-Bit Processing
FEFFH
R7
BANK0
RP3
R6
FEF8H
R5
BANK1
RP2
R4
FEE0H
R3
RP1
BANK2
R2
FEE8H
R1
RP0
BANK3
R0
FEE0H
15
0
7
0
(b) Function Name
16-Bit Processing
8-Bit Processing
FEFFH
H
BANK0
HL
L
FEF8H
D
BANK1
DE
E
FEF0H
B
BC
BANK2
C
FEE8H
A
AX
BANK3
X
FEE0H
15
0
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0
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Chapter 3 CPU Architecture
3.2.3 Special function register (SFR)
Unlike a general register, each special function register has special functions.
It is allocated in the FF00H to FFFFH area.
The special function registers can be manipulated in a similar way as the general registers, by using
operation, transfer, or bit-manipulate instructions. The special function registers are read from and written to in specified manipulation bit units (1, 8, and/or 16) depending on the register type.
Each manipulation bit unit can be specified as follows.
• 1-bit manipulation
Describe the symbol reserved with assembler for the 1-bit manipulation instruction operand
(sfr.bit).
This manipulation can also be specified with an address.
• 8-bit manipulation
Describe the symbol reserved with assembler for the 8-bit manipulation instruction operand
(sfr).
This manipulation can also be specified with an address.
• 16-bit manipulation
Describe the symbol reserved with assembler for the 16-bit manipulation instruction operand
(sfrp).
When addressing an address, describe an even address.
Table 3-5, “Special Function Register List,” on page 67 gives a list of special function registers. The meaning of items in the table is as follows.
• Symbol
The assembler software RA78K0 translates these symbols into corresponding addresses
where the special function registers are allocated. These symbols should be used as instruction
operands in the case of programming.
• R/W
This column shows whether the corresponding special function register can be read or written.
R/W : Both reading and writing are enabled.
R
: The value in the register can read out. A write to this register is ignored.
W : A value can be written to the register. Reading values from the register is impossible.
• Manipulation
The register can be manipulated in bit units.
• After reset
The register is set to the value immediately after the RESET signal is input.
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Table 3-5:
Address
Special Function Register List (1/3)
SFR Name
Symbol
R/W
Manipulation Bit
Unit
1-bit
8-bit 16-bit
After
Reset
FF00H
Port 0
P0
R/W
×
×
-
00H
FF01H
Port 1
P1
R
×
×
-
00H
FF02H
Port 2
P2
R/W
×
×
-
00H
FF03H
Port 3
P3
R/W
×
×
-
00H
FF04H
Port 4
P4
R/W
×
×
-
00H
FF05H
Port 5
P5
R/W
×
×
-
00H
FF06H
Port 6
P6
R/W
×
×
-
00H
FF08H
Port 8
P8
R/W
×
×
-
00H
FF09H
Port 9
P9
R/W
×
×
-
00H
FF12H
8-bit timer register 50
TM50
R
-
×
-
00H
FF13H
8-bit timer register 51
TM51
R
-
×
-
00H
FF18H
Compare register 50
CR50
R/W
-
×
-
00H
FF19H
Compare register 51
CR51
R/W
-
×
-
00H
FF1BH
A/D conversion result register
ADCR1
R
-
×
-
00H
FF1FH
Serial I/O shift register 30
SIO30
R/W
-
×
-
00H
FF20H
Port mode register 0
PM0
R/W
×
×
-
FFH
FF22H
Port mode register 2
PM2
R/W
×
×
-
FFH
FF23H
Port mode register 3
PM3
R/W
×
×
-
FFH
FF24H
Port mode register 4
PM4
R/W
×
×
-
FFH
FF25H
Port mode register 5
PM5
R/W
×
×
-
FFH
FF26H
Port mode register 6
PM6
R/W
×
×
-
FFH
FF28H
Port mode register 8
PM8
R/W
×
×
-
FFH
FF29H
Port mode register 9
PM9
R/W
×
×
-
FFH
FF30H
Pull-up resistor option register 0
PU0
R/W
×
×
-
00H
FF33H
Pull-up resistor option register 3
PU3
R/W
×
×
-
00H
FF34H
Pull-up resistor option register 4
PU4
R/W
×
×
-
00H
FF36H
Pull-up resistor option register 6
PU6
R/W
×
×
-
00H
FF38H
Pull-up resistor option register 8
PU8
R/W
×
×
-
00H
FF39H
Pull-up resistor option register 9
PU9
R/W
×
×
-
00H
FF40H
Clock output select register
CKS
R/W
×
×
-
00H
FF41H
Watch timer mode register
WTM
R/W
×
×
-
00H
FF42H
Watchdog timer clock selection register
WDCS
R/W
×
×
-
00H
FF48H
Ext. INT rising edge enable register
EGP
R/W
×
×
-
00H
FF49H
Ext. INT falling edge enable register
EGN
R/W
×
×
-
00H
FF50H
Flash programming mode control register
FLPMC
R/W
×
×
-
08H
FF51H
Self-programming and oscillation control register SPOC
R/W
×
×
-
08H
FF53H
Port function register 3
PF3
R/W
×
×
-
00H
FF54H
Port function register 4
PF4
R/W
×
×
-
00H
FF58H
Port function register 8
PF8
R/W
×
×
-
00H
FF59H
Port function register 9
PF9
R/W
×
×
-
00H
FF65H
16-bit timer mode control register 2
TMC2
R/W
×
×
-
00H
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Chapter 3 CPU Architecture
Table 3-5:
Address
Special Function Register List (2/3)
SFR Name
Symbol
R/W
Manipulation Bit
Unit
1-bit
8-bit 16-bit
After
Reset
FF66H
Prescaler mode register 2
PRM2
R/W
-
×
-
00H
FF67H
Capture/Compare control register 2
CRC2
R/W
-
×
-
00H
16-bit timer/counter register 2
TM2
R
-
-
×
0000H
16-bit capture register 20
CR20
R
-
-
×
0000H
16-bit capture register 21
CR21
R
-
-
×
0000H
16-bit capture register 22
CR22
R
-
-
×
0000H
FF70H
8-bit timer mode control register 50
TMC50
R/W
×
×
-
00H
FF71H
Timer clock selection register 50
TCL50
R/W
-
×
-
00H
FF74H
8-bit timer mode control register 51
TMC51
R/W
×
×
-
00H
FF68H
FF69H
FF6AH
FF6BH
FF6CH
FF6DH
FF6EH
FF6FH
FF75H
Timer clock selection register 51
TCL51
R/W
-
×
-
00H
FF78H
8-bit timer mode control register 52
TMC52
R/W
×
×
-
00H
FF79H
Timer clock selection register 52
TCL52
R/W
-
×
-
00H
FF7BH
8-bit timer register 52
TM52
R
-
×
-
00H
FF7CH
Compare register 52
CR52
R/W
-
×
-
00H
FF90H
LCD display mode register
LCDM
R/W
×
×
-
00H
FF92H
LCD display control register
LCDC
R/W
×
×
-
00H
FF93H
LCD-C/D emulation register
LCDTM
W
-
×
-
00H
FF98H
A/D converter mode register 1
ADM1
R/W
×
×
-
00H
FF99H
Analog channel select register 1
ADS1
R/W
-
×
-
00H
FF9AH
Power fail comparator mode register
PFM
R/W
×
×
-
00H
FF9BH
Power fail comparator threshold register
PFT
R/W
-
×
-
00H
FFA0H
UART operation mode register
ASIM0
R/W
×
×
-
00H
FFA1H
UART receive status register
ASIS0
R
-
×
-
00H
FFA2H
Baud rate generator control register
BRGC0
R/W
-
×
-
00H
Transmit shift register
TXS0
W
-
×
-
FFH
FFA3H
Receive buffer register
RXB0
R
-
×
-
FFH
FFA8H
Serial mode register SIO30
CSIM30
R/W
×
×
-
00H
FFA9H
Serial I/O shift register SIO31
SIO31
R/W
-
×
-
00H
FFAAH
Serial mode register SIO31
CSIM31
R/W
×
×
-
00H
FFABH
2-wire/3-wire mode switch register
SIOSWI
R/W
×
×
-
00H
FFB0H
CAN control register
CANC
R/W
×
×
-
01H
FFB1H
Transmit control register
TCR
R/W
-
×
-
00H
FFB2H
Received message register
RMES
R
-
×
-
00H
FFB3H
Redefinition control register
REDEF
R/W
×
×
-
00H
FFB4H
CAN error status register
CANES
R/W
-
×
-
00H
FFB5H
Transmit error counter
TEC
R
-
×
-
00H
FFB6H
Receive error counter
REC
R
-
×
-
00H
FFB7H
Message count register
MCNT
R/W
-
×
-
00H
FFB8H
Bit rate prescaler
BRPRS
R/W
-
×
-
3FH
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Table 3-5:
Address
Special Function Register List (3/3)
SFR Name
Symbol
R/W
Manipulation Bit
Unit
1-bit
FFB9H
Synchronous control register 0
SYNC0
R/W
8-bit 16-bit
After
Reset
-
×
-
18H
FFBAH
Synchronous control register 1
SYNC1
R/W
-
×
-
0EH
FFBBH
Mask control register
MASKC
R/W
-
×
-
00H
FFBDH
Meter C/D prescaler switch register
SMSWI
R/W
×
×
-
00H
FFBFH
8-bit timer mode control register
MCNTC
R/W
-
×
-
00H
FFC0H
Sound generator control register
SGCR
R/W
×
×
-
00H
FFC1H
Sound generator amplitude register
SGAM
R/W
-
×
-
00H
FFC2H
Sound generator buzzer control register
SGBR
R/W
-
×
-
00H
FFC3H
Motor 1 compare register
MCMP10
R/W
-
×
-
00H
FFC4H
Motor 1 compare register
MCMP11
R/W
-
×
-
00H
FFC5H
Motor 2 compare register
MCMP20
R/W
-
×
-
00H
FFC6H
Motor 2 compare register
MCMP21
R/W
-
×
-
00H
FFC7H
Motor 3 compare register
MCMP30
R/W
-
×
-
00H
FFC8H
Motor 3 compare register
MCMP31
R/W
-
×
-
00H
FFC9H
Motor 4 compare register
MCMP40
R/W
-
×
-
00H
FFCAH
Motor 4 compare register
MCMP41
R/W
-
×
-
00H
FFCBH
Port mode control register
PMC
R/W
-
×
-
00H
FFCCH
Compare control register 1
MCMPC1
R/W
-
×
-
00H
FFCDH
Compare control register 2
MCMPC2
R/W
-
×
-
00H
FFCEH
Compare control register 3
MCMPC3
R/W
-
×
-
00H
FFCFH
Compare control register 4
MCMPC4
R/W
-
×
-
00H
FFE0H
Interrupt request flag register 0L
IF0L
R/W
×
×
FFE1H
Interrupt request flag register 0H
IF0H
R/W
×
×
FFE2H
Interrupt request flag register 1L
IF1L
R/W
×
×
FFE4H
Interrupt mask flag register 0L
MK0L
R/W
×
×
FFE5H
Interrupt mask flag register 0H
MK0H
R/W
×
×
FFE6H
Interrupt mask flag register 1L
MK1L
R/W
×
×
FFE8H
Priority order specified flag 0L
PR0L
R/W
×
×
FFE9H
Priority order specified flag 0H
PR0H
R/W
×
×
FFEAH
Priority order specified flag 1L
PR1L
R/W
×
×
×
FFH
FFF0H
Memory size switching register
IMS
R/W
-
×
-
CFH
FFF4H
Internal expansion RAM size switching register
IXS
R/W
-
×
-
Note
FFF9H
Watchdog timer mode register
WDTM
R/W
×
×
-
00H
FFFAH
Oscillation stabilisation time register
OSTS
R/W
-
×
-
04H
FFFBH
Processor clock control register
PCC
R/W
×
×
-
04H
×
×
×
×
×
00H
00H
00H
FFH
FFH
FFH
FFH
FFH
Note: The values after reset depend on the product (see Table 23-4, “Values when the Internal
Expansion RAM Size Switching Register is Reset,” on page 389).
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Chapter 3 CPU Architecture
3.3 Instruction Address Addressing
An instruction address is determined by program counter (PC) contents. The PC contents are normally
incremented (+1 for each byte) automatically according to the number of bytes of an instruction to be
fetched each time another instruction is executed. However, when a branch instruction is executed, the
branch destination information is set to the PC and branched by the following addressing.
(For details of instructions, refer to 78K/0 User's Manual - Instructions (U12326E).
3.3.1 Relative addressing
The value obtained by adding 8-bit immediate data (displacement value: jdisp8) of an instruction code
to the start address of the following instruction is transferred to the program counter (PC) and branched.
The displacement value is treated as signed two’s complement data (-128 to +127) and bit 7 becomes
a sign bit.
In other words, the range of branch in relative addressing is between -128 and +127 of the start
address of the following instruction. This function is carried out when the BR $addr16 instruction or a
conditional branch instruction is executed.
Figure 3-15:
Relative Addressing
15
0
... PC indicates the start address
of the instruction
after the BR instruction.
PC
+
15
8
a
7
0
6
S
jdisp8
15
0
PC
When S = 0, all bits of a are 0.
When S = 1, all bits of a are 1.
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3.3.2 Immediate addressing
Immediate data in the instruction word is transferred to the program counter (PC) and branched.
This function is carried out when the CALL!addr16 or BR!addr16 or CALLF!addr11 instruction is executed.
CALL!addr16 and BR!addr16 instructions can branch to all the memory space.
CALLF!addr11 instruction branches to the area from 0800H to 0FFFH.
Figure 3-16:
Immediate Addressing
(a) In the case of CALL!addr16 and BR!addr16 instructions
7
0
CALL or BR
Low Addr.
High Addr.
15
8 7
0
PC
(b) In the case of CALLF!addr11 instruction
7 6
4
3
0
CALLF
fa10–8
fa7–0
15
PC
0
11 10
0
0
0
8 7
0
1
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Chapter 3 CPU Architecture
3.3.3 Table indirect addressing
Table contents (branch destination address) of the particular location to be addressed by bits 1 to 5 of
the immediate data of an operation code are transferred to the program counter (PC) and branched.
Table indirect addressing is carried out when the CALLT [addr5] instruction is executed. This instruction
can refer to the address stored in the memory table 40H to 7FH and branch to all the memory space.
Figure 3-17:
7
Operation Code
6
1
Table Indirect Addressing
5
1
1
ta4–0
1
15
Effective Address
0
7
0
0
0
0
0
0 10
8
7
0
0
8
7
6
5
1 0
0
Memory (Table) 0
Low Addr.
High Addr.
Effective Address+1
15
PC
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Chapter 3 CPU Architecture
3.3.4 Register addressing
Register pair (AX) contents to be specified with an instruction word are transferred to the program counter (PC) and branched.
This function is carried out when the BR AX instruction is executed.
Figure 3-18:
Register Addressing
0 7
7
X
A
rp
15
0
8
7
0
PC
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Chapter 3 CPU Architecture
3.4 Operand Address Addressing
The following methods are available to specify the register and memory (addressing) which undergo
manipulation during instruction execution.
3.4.1 Implied addressing
The register which functions as an accumulator (A and AX) in the general register is automatically
(implicitly) addressed.
Of the µPD780828A Subseries instruction words, the following instructions employ implied addressing.
Table 3-6:
Instruction
Implied Addressing
Register to be Specified by Implied Addressing
MULU
A register for multiplicant and AX register for product storage
DIVUW
AX register for dividend and quotient storage
ADJBA/ADJBS
A register for storage of numeric values which become decimal correction targets
ROR4/ROL4
A register for storage of digit data which undergoes digit rotation
Operand format
Because implied addressing can be automatically employed with an instruction, no particular operand
format is necessary.
Description example
In the case of MULU X
With an 8-bit x 8-bit multiply instruction, the product of A register and X register is stored in AX. In this
example, the A and AX registers are specified by implied addressing.
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3.4.2 Register addressing
The general register is accessed as an operand. The general register to be accessed is specified with
register bank select flags (RBS0 and RBS1) and register specify code (Rn, RPn) in the instruction
code.
Register addressing is carried out when an instruction with the following operand format is executed.
When an 8-bit register is specified, one of the eight registers is specified with 3 bits in the operation
code.
Operand format
Table 3-7:
Identifier
Register Addressing
Description
r
X, A, C, B, E, D, L, H
rp
AX, BC, DE, HL
‘r’ and ‘rp’ can be described with function names (X, A, C, B, E, D, L, H, AX, BC, DE and HL) as well as
absolute names (R0 to R7 and RP0 to RP3).
Description example
Figure 3-19:
Register Addressing
(a) MOV A, C; when selecting C register as r
Operation code
0 1 1 0 0 0 1 0
Register specify code
(b) INCW DE; when selecting DE register pair as rp
Operation code
1 0 0 0 0 1 0 0
Register specify code
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Chapter 3 CPU Architecture
3.4.3 Direct addressing
The memory indicated by immediate data in an instruction word is directly addressed.
Operand format
Table 3-8:
Direct addressing
Identifier
addr16
Description
Label or 16-bit immediate data
Description example
MOV A, !0FE00H; when setting !addr16 to FE00H
Figure 3-20:
Operation code
76
Direct addressing
1 0 0 0 1 1 1 0
OP code
0 0 0 0 0 0 0 0
00H
1 1 1 1 1 1 1 0
FEH
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Chapter 3 CPU Architecture
3.4.4 Short direct addressing
The memory to be manipulated in the fixed space is directly addressed with 8-bit data in an instruction
word.
The fixed space to which this addressing is applied to is the 256-byte space, from FE20H to FF1FH. An
internal high-speed RAM and a special function register (SFR) are mapped at FE20H to FEFFH and
FF00H to FF1FH, respectively.
The SFR area where short direct addressing is applied (FF00H to FF1FH) is a part of the SFR area. In
this area, ports which are frequently accessed in a program, a compare register of the timer/event
counter, and a capture register of the timer/event counter are mapped and these SFRs can be manipulated with a small number of bytes and clocks.
When 8-bit immediate data is at 20H to FFH, bit 8 of an effective address is set to 0. When it is at 00H
to 1FH, bit 8 is set to 1. Refer to Figure 3-21 below.
Operand format
Table 3-9:
Short direct addressing
Identifier
Description
saddr
Label of FE20H to FF1FH immediate data
saddrp
Label of FE20H to FF1FH immediate data (even address only)
Figure 3-21:
Short direct addressing
(a) Description example
MOV 0FE30H, #50H; when setting saddr to FE30H and immediate data to 50H.
Operation code
0 0 0 1 0 0 0 1
OP code
0 0 1 1 0 0 0 0
30H (saddr-offset)
0 1 0 1 0 0 0 0
50H (immediate data)
(b) Illustration
7
0
OP code
saddr-offset
Short Direct Memory
8 7
15
Effective Address
1
1
1
1
1
1
0
1
When 8-bit immediate data is 20H to FFH, α = 0
When 8-bit immediate data is 00H to 1FH, α = 1
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3.4.5 Special function register (SFR) addressing
The memory-mapped special function register (SFR) is addressed with 8-bit immediate data in an
instruction word.
This addressing is applied to the 240-byte spaces FF00H to FFCFH and FFE0H to FFFFH. However,
the SFR mapped at FF00H to FF1FH can be accessed with short direct addressing.
Operand format
Table 3-10:
Special-Function Register (SFR) Addressing
Identifier
Description
sfr
Special-function register name
sfrp
16-bit manipulatable special-function register name (even address only)
Figure 3-22:
Special-Function Register (SFR) Addressing
(a) Description example
MOV PM0, A; when selecting PM0 (FE20H) as sfr
Operation code
1 1 1 1 0 1 1 0
OP code
0 0 1 0 0 0 0 0
20H (sfr-offset)
(b) Illustration
7
0
OP code
sfr-offset
SFR
8 7
15
Effective Address
78
1
1
1
1
1
1
1
0
1
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Chapter 3 CPU Architecture
3.4.6 Register indirect addressing
The memory is addressed with the contents of the register pair specified as an operand. The register
pair to be accessed is specified with the register bank select flag (RBS0 and RBS1) and the register
pair specify code in the instruction code. This addressing can be carried out for all the memory spaces.
Operand format
Table 3-11:
Register indirect addressing
Identifier
Description
-
[DE], [HL]
Figure 3-23:
Register indirect addressing
(a) Description example
MOV A, [DE]; when selecting [DE] as register pair
Operation code
1 0 0 0 0 1 0 1
(b) Illustration
16
8 7
E
D
DE
7
The contents of addressed
memory are transferred
7
0
Memory
0
Memory address specified
by register pair DE
0
A
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3.4.7 Based addressing
8-bit immediate data is added to the contents of the base register, that is, the HL register pair, and the
sum is used to address the memory. The HL register pair to be accessed is in the register bank specified with the register bank select flags (RBS0 and RBS1). Addition is performed by expanding the offset
data as a positive number to 16 bits. A carry from the 16th bit is ignored. This addressing can be carried
out for all the memory spaces.
Operand format
Table 3-12:
Identifier
Based addressing
Description
[HL + byte]
Figure 3-24:
Based addressing description example
MOV A, [HL + 10H]; when setting byte to 10H
Operation code
1 0 1 0 1 1 1 0
0 0 0 1 0 0 0 0
80
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Chapter 3 CPU Architecture
3.4.8 Based indexed addressing
The B or C register contents specified in an instruction are added to the contents of the base register,
that is, the HL register pair, and the sum is used to address the memory. The HL, B, and C registers to
be accessed are registers in the register bank specified with the register bank select flag (RBS0 and
RBS1).
Addition is performed by expanding the contents of the B or C register as a positive number to 16 bits.
A carry from the 16th bit is ignored. This addressing can be carried out for all the memory spaces.
Operand format
Table 3-13:
Based indexed addressing
Identifier
Description
[HL + B], [HL + C]
Figure 3-25:
Based indexed addressing description example
In the case of MOV A, [HL + B]
Operation code
1 0 1 0 1 0 1 1
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3.4.9 Stack addressing
The stack area is indirectly addressed with the stack pointer (SP) contents.
This addressing method is automatically employed when the PUSH, POP, subroutine call and RETURN
instructions are executed or the register is saved/reset upon generation of an interrupt request.
Stack addressing enables to address the internal high-speed RAM area only.
Figure 3-26:
Stack addressing description example
In the case of PUSH DE
Operation code
82
1 0 1 1 0 1 0 1
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Chapter 4
Port Functions
4.1 Port Functions
The µPD780828A Subseries units incorporate five input ports and thirty-eight input/output ports.
Figure 4-1 shows the port configuration. Every port is capable of 1-bit and 8-bit manipulations and can
carry out considerably varied control operations. Besides port functions, the ports can also serve as onchip hardware input/output pins.
Figure 4-1:
Port Types
P00
Port 0
P03
P60
P10
Port 6
Port 1
P65
P14
P20
P80
Port 2
Port 8
P27
P87
P34
Port 3
P37
P40
P90
Port 4
Port 9
P47
P97
P50
Port 5
P57
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Table 4-1:
Input/
Output
Pin
Name
P00
Input/
Output
Output
Pin Input/Output Types (1/2)
Function
INTP1
Input
INTP2
Input
CCLK
Input
AN10-AN17
Input
P20
SM11
Output
P21
SM12
P22
SM13
P01
P02
P10-P14
P23
P24
Port 1
5-bit input only port
Port 2
8-bit output only port
Output
84
SM21
SM22
P26
SM23
P27
SM24
P35
P36
Port 3
4 bit input/output port
Input/output mode can be specified bit-wise
Input
SCK30/S26
Input
S030/S25
Input
SI30/S24
Input
P50
SM31
P51
SM32
P52
SM33
P53
P54
Port 5
8-bit output only port
SM34
SM41
P55
SM42
P56
SM43
P57
SM44
P60
SGOF-SGO
P62
P63
Hi-z
TI50/TO50/S27
Port 4
8-bit input/output port
P40-P47 Input/output mode can be specified bit-wise
S0-S7
This port can be used as a segment signal output port or an
I/O port, in an 8-bit unit setting the port function
P61
Input/
Output
SM14
P25
P37
Input/
Output
After
Reset
Input
Port 0
4-bit input/output port
Input/output mode can be specified bit-wise
If used an input port, a pull-up resistor can be connected by
software bit-wise
P34
Input/
Output
Alternate Function
INTP0
P03
Input
Port Functions
Input
Hi-z
SGOA-PCL
Port 6
6-bit input/output port
Input/output mode can be specified bit-wise
RXD0
TXD0
P64
TI20
P65
TI21
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Input
Chapter 4
Table 4-1:
Input/
Output
Input/
Output
Pin
Name
Pin Input/Output Types (2/2)
Function
Alternate Function
Port 8
8-bit input/output port
Input/output mode can be specified bit-wise
P80-P87 If used an input port, a pull-up resistor can be connected by S15-S8
software
This port can be used as a segment signal output port or an
I/O port, in an 1-bit units by setting the port function
P90
TI22/S23
P91
TO51/TI51/S22
P92
Input/
Output
Port Functions
P93
P94
P95
Port 9
8-bit input/output port
Input/output mode can be specified bit-wise
This port can be used as a segment signal output port or an
I/O port, in an 1-bit units by setting the LCD control register
Input
TP0/S21
SCK31/S20
SO31/SIO31/S19
Input
SI31/S18
P96
S17
P97
S16
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4.2 Port Configuration
A port consists of the following hardware:
Table 4-2:
Port Configuration
Item
Configuration
Control register
Port mode register (PMm: m = 0, 2 to 6, 8, 9)
Pull-up resistor option register (PUm: m = 0, 3, 4, 6, 8, 9)
Port function register (PFm: m = 3, 4, 8, 9)
Port
Total: 79 ports
Mask ROM versions
Total: 38 pins
µPD78F0828A
Total: 38 pins
Pull-up resistor
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Port Functions
4.2.1 Port 0
Port 0 is an 4-bit input/output port with output latch. P00 to P03 pins can specify the input mode/output
mode in 1-bit units with the port mode register 0 (PM0). When P00 to P03 pins are used as input pins,
a pull-up resistor can be connected to them bit-wise with the pull-up resistor option register (PUm).
Dual-function includes external interrupt request input and the external clock input for the DCAN
peripheral.
RESET input sets port 0 to input mode.
Figure 4-2 shows block diagram of port 0.
Caution:
Because port 0 also serves for external interrupt request input, when the port function output mode is specified and the output level is changed, the interrupt request
flag is set. Thus, when the output mode is used, set the interrupt mask flag to 1, in
order to avoid an factorized interrupt.
Figure 4-2:
P00 to P03 Configurations
VDD
WRPUO
PU0
P-ch
RD
Internal bus
Selector
WRPORT
Output Latch
(P00 to P03)
P00/INTP0,
P01/INTP1,
P02/INTP2,
P03/CCLK
WRPM
PM00 to PM03
Remarks: 1. PU0
: Pull-up resistor option register
2. PM
: Port mode register
3. RD
: Port 0 read signal
4. WR
: Port 0 write signal
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4.2.2 Port 1
Port 1 is an 5-bit input only port.
Dual-functions include an A/D converter analog input.
Figure 4-3 shows a block diagram of port 1.
Figure 4-3:
P10 to P14 Configurations
Internal bus
RD
Remark:
88
P10/ANI0
to
P14/ANI4
RD: Port 1 read signal
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Chapter 4
Port Functions
4.2.3 Port 2
Port 2 is an 8-bit output port with output latch. P20 to P27 goes into a high impedance state when the
port mode register 2 is set to 1.
Dual-function includes meter control PWM output.
RESET input sets port 2 to high-impedance state.
Figure 4-4 shows a block diagram of port 2.
Caution:
When port 2 is set to 1, the read back from output latch operation is enabled.
When port 2 is set to 0, the read back from output latch operation is disabled.
Figure 4-4:
P20 to P27 Configurations
Internal bus
RD
WRPORT
Note 1
Output Latch
(P20 to P27)
P20/SM11 to P23/SM14
P24/SM21 to P27/SM24
WRPM
PM20 to PM27
Note 2
Dual Function
Remarks: 1. PM
: Port mode register
2. RD
: Port 2 read signal
3. WR
: Port 2 write signal
Notes: 1. Set output latch to 0 when dual function shall be applied to output.
2. Disable dual function when the content of the output latch shall be applied to output.
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4.2.4 Port 3
Port 3 is an 4-bit input/output port with output latch. P34 to P37 pins can specify the input mode/output
mode in 1-bit units with the port mode register 3 (PM3). When P34 to P37 are used as input pins,
pull-up resistors can be connected bit-wise with the pull-up resistor option register (PU3).
Dual-function includes timer input/output, serial interface data input/output, serial interface clock
input/output and segment signal output of the LCD controller/driver.
RESET input sets port 3 to input mode.
Figure 4-5 shows a block diagram of port 3.
Caution:
When used as segment lines, set the port function (PF3) according to its function.
Figure 4-5:
P34 to P37 Configurations
RD
Internal bus
Selector
WRPORT
P34/TO50/TI50/S27
P35/SCK3/S26
P36/SO3/S25
P37/SI3/S24
Output Latch Note 1
(P34 to P37)
WRPM
PM34 to PM37
Note 2
Dual Function
Remarks: 1. PM
: Port mode register
2. RD
: Port 3 read signal
3. WR
: Port 3 write signal
Notes: 1. Set output latch to 0 when dual function shall be applied to output.
2. Disable dual function when the comment of the output latch shall be applied to output.
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4.2.5 Port 4
This is an 8-bit input/output port with output latches. Input mode/output mode can be specified in 1-bit
units with the port mode register 4. When P40 to P47 are used as input pins, pull-up resistors can be
connected bit-wise with the pull-up resistor option register (PU4).
These pins are dual function pin and serve as segment signal output of LCD controller/driver.
RESET input sets the input mode.
The port 4 block diagram is shown in Figure 4-6.
Caution:
When used as segment lines, set the port function (PF4) according to its function.
Figure 4-6:
P40 to P47 Configurations
RD
Selector
WRPORT
Note 1
Internal bus
Output Latch
(P40 to P47)
P40/S7
to
P47/S0
WRPM
PM40 to PM47
Note 2
Dual Function
Remarks: 1. PUO : Pull-up resistor option register
2. PM
: Port mode register
3. RD
: Port 4 read signal
4. WR
: Port 4 write signal
Notes: 1. Set output latch to 0 when dual function shall be applied to output.
2. Disable dual function when the comment of the output latch shall be applied to output.
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4.2.6 Port 5
Port 5 is an 8-bit output port with output latch. P50 to P57 goes into a high-impedance state when the
port mode register 5 is set to 1.
The dual-function includes meter control PWM output.
RESET input sets port 5 to high-impedance state.
Figure 4-7 shows a block diagram of port 5.
Caution:
When port 5 is set to 1, the read back from output latch operation is enabled.
When port 5 is set to 0, the read back from output latch operation is disabled.
Figure 4-7:
P50 to P57 Configurations
RD
WRPORT
Note 1
P50/SM31 to P53/SM34
Output Latch
(P50 to P57)
Internal bus
P54/SM41 to P57/SM44
WRPM
PM50 to PM57
Note 2
Dual Function
Remarks: 1. PM
: Port mode register
2. RD
: Port 5 read signal
3. WR
: Port 5 write signal
Notes: 1. Set output latch to 0 when dual function shall be applied to output.
2. Disable dual function when the comment of the output latch shall be applied to output.
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4.2.7 Port 6
Port 6 is an 6-bit input/output port with output latch. P60 to P65 pins can specify the input mode/output
mode in 1-bit units with the port mode register 6 (PM6). When P62 to P65 are used as input pins,
pull-up resistors can be connected bit-wise with the pull-up resistor option register (PU6).
The dual-function includes the asynchronous serial interface receive/transmit, the timer capture input of
TM2 and the sound generator output.
RESET input sets port 6 to input mode.
Figure 4-8 shows block diagrams of port 6.
Figure 4-8:
P60 to P65 Configurations
RD
Internal bus
Selector
WRPORT
Note
Output Latch
P60 to P65
P60/SGOF/SGO,
P61/SGOA/PCL,
P62/RXD0,
P63/TXD0,
P64/TI20,
P65/TI21
WRPM
PM60 to PM65
Remarks: 1. PM
: Port mode register
2. RD
: Port 6 read signal
3. WR
: Port 6 write signal
Note: Set output latch to 0 when dual function shall be applied to output.
Caution:
The pull-up option is not available for P60 and P61.
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Port Functions
4.2.8 Port 8
This is a 8-bit input/output port with output latches. Input mode/output mode can be specified in 1-bit
units with a port mode register 8. When P80 to P87 are used as input pins, pull-up resistors can be connected bit-wise with the pull-up resistor option register (PU8).
Dual-function includes segment signal output of LCD controller/driver.
RESET input sets the input mode.
Port 8 block diagram is shown in Figure 4-9.
Caution:
When used as segment lines, set the port function PF8 according to its functions.
Figure 4-9:
P80 to P87 Configurations
RD
Internalbus
Selector
WRPORT
Output Latch Note 1
(P80 to P87)
P80/S8
P87/S15
WRPM
PM80 to PM87
Note 2
Dual Function
Remarks: 1. PM
: Port mode register
2. RD
: Port 7 read signal
3. WR
: Port 7 write signal
Notes: 1. Set output latch to 0 when dual function shall be applied to output.
2. Disable dual function when the comment of the output latch shall be applied to output.
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4.2.9 Port 9
This is a 8-bit input/output port with output latches. Input mode/output mode can be specified in 1-bit
units with the port mode register 9. When P90 to P97 are used as input pins, pull-up resistors can be
connected bit-wise with the pull-up resistor option register (PU9).
These pins are dual function pin and serve as segment signal output of LCD controller/driver.
RESET input sets the input mode.
The port 9 block diagram is shown in Figure 4-10.
Caution:
See port 4 with change to PF4.
Figure 4-10:
P90 to P97 Configurations
RD
Selector
WRPORT
Internal bus
Note 1
Output Latch
(P90 to P97)
P90/TI22/S23,
P91/TO51/TI51/S22,
P92/TP0/S21,
P93/S20/SCK31,
P94/S19/SO31/SIO31,
P95/S18/SI31,
P96/S17,
P97/S16
WRPM
PM90 to PM97
Dual Function
Note 2
Remarks: 1. PUO : Pull-up resistor option register
2. PM
: Port mode register
3. RD
: Port 13 read signal
4. WR
: Port 13 write signal
Notes: 1. Set output latch to 0 when dual function shall be applied to output.
2. Disable dual function when the comment of the output latch shall be applied to output.
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Port Functions
4.3 Port Function Control Registers
The following three types of registers control the ports.
• Port mode registers (PM0, PM2 to PM6, PM8, PM9)
• Pull-up resistor option register (PU0, PU3, PU4, PU6, PU8, PU9)
• Port function registers (PF3, PF4, PF8, PF9)
(1)
Port mode registers (PM0, PM2 to PM6, PM8, PM9)
These registers are used to set port input/output in 1-bit units.
PM0, PM2 to PM6, PM8 and PM9 are independently set with a 1-bit or 8-bit memory manipulation
instruction.
RESET input sets registers to FFH.
When port pins are used as alternate-function pins, set the port mode register and output latch
according to the function.
Cautions: 1. Pins P10 to P14 are input-only pins.
2. As port 0 has an alternate function as external interrupt request input, when the
port function output mode is specified and the output level is changed, the interrupt request flag is set. When the output mode is used, therefore, the interrupt
mask flag should be set to 1 beforehand.
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Chapter 4
Figure 4-11:
PM0
PM3
PM4
PM6
PM8
PM9
PM5
Port Mode Register Format
7
6
5
4
3
2
1
0
1
1
1
1
PM03
PM02
PM01
PM00
7
6
5
4
3
2
1
0
R/W Address
PM37
PM36
PM35
PM34
1
1
1
1
R/W
7
6
5
4
3
2
1
0
R/W Address
PM47
PM46
PM45
PM44
PM43
PM42
PM41
PM40
7
6
5
4
3
2
1
0
1
1
PM65
PM64
PM63
PM62
PM61
PM60
7
6
5
4
3
2
1
0
PM87
PM86
PM85
PM84
PM83
PM82
PM81
PM80
7
6
5
4
3
2
1
0
PM97
PM96
PM95
PM94
PM93
PM92
PM91
PM90
0
Output mode (output buffer ON)
1
Input mode (output buffer OFF)
7
6
5
4
3
2
1
0
PM27
PM26
PM25
PM24
PM23
PM22
PM21
PM20
7
6
5
4
3
2
1
0
PM57
PM56
PM55
PM54
PM53
PM52
PM51
PM50
PMmn
R/W Address
R/W
R/W
FF20H
FF23H
FF24H
R/W Address
R/W
FF26H
R/W Address
R/W
FF28H
R/W Address
R/W
FF29H
After
Reset
FFH
After
Reset
FFH
After
Reset
FFH
After
Reset
FFH
After
Reset
FFH
After
Reset
FFH
PMmn Pin Input/Output Mode Selection
(m = 0, 3, 4, 6, 8, 9; n = 0 - 7)
PMmn
PM2
Port Functions
R/W Address
R/W
FF22H
R/W Address
R/W
FF25H
After
Reset
FFH
After
Reset
FFH
PMmn Pin Output Buffer Selection
(m = 2, 5; n = 0 - 7)
0
Output mode (output buffer ON)
1
Hi-Z mode (output buffer OFF)
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(2)
Port Functions
Pull-up resistor option register (PU0, PU3, PU4, PU6, PU8, PU9)
This register is used to set whether to use an internal pull-up resistor at each port or not. A pull-up
resistor is internally used at bits which are set to the input mode at a port where on-chip pull-up
resistor use has been specified with PUm (m = 0, 3, 4, 6, 8, 9). No on-chip pull-up resistors can be
used to the bits set to the output mode, irrespective of PU setting.
PUm is set with an 1-bit or an 8-bit memory manipulation instruction.
RESET input sets this register to 00H.
Figure 4-12:
7
6
5
4
3
2
1
0
0
0
0
0
PU03
PU02
PU01
PU00
7
6
5
4
3
2
1
0
R/W Address
PU37
PU36
PU35
PU34
0
0
0
0
R/W
7
6
5
4
3
2
1
0
R/W Address
PU47
PU46
PU45
PU44
PU43
PU42
PU41
PU40
7
6
5
4
3
2
1
0
R/W Address
0
0
PF65
PF64
PF63
PF62
0
0
R/W
7
6
5
4
3
2
1
0
R/W Address
PU87
PU86
PU85
PU84
PU83
PU82
PU81
PU80
7
6
5
4
3
2
1
0
PU97
PU96
PU95
PU94
PU93
PU92
PU91
PU90
PU0
PU3
PU4
PU6
PU8
PU9
Pull-Up Resistor Option Register (PUm) Format
PUmn
R/W Address
R/W
R/W
R/W
FF30H
FF33H
FF34H
FF36H
FF38H
R/W Address
R/W
FF39H
After
Reset
00H
After
Reset
00H
After
Reset
00H
After
Reset
00H
After
Reset
00H
After
Reset
00H
PUmn Pin Internal Pull-up Resistor Selection
(m = 0, 3, 4, 6, 8, 9; n = 0 - 7)
0
On-chip pull-up resistor not used
1
On-chip pull-up resistor used
Remark:
The pull-up option is not available for P60 and P61.
Caution:
Once the software can't use pull-up resistors are connected by setting 1 to the
pull-up resistor option register, they are not disconnected even in output mode. To
switch off the pull-up resistors must be written to the pull-up resistor option register.
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Chapter 4
(3)
Port Functions
Port function register (PF3, PF4, PF8 and PF9)
This register is used to set the LCD segment function of ports 3, 4, 8 and 9.
PF3, PF8 and PF9 are set with an 1-bit or 8-bit manipulation instruction. PF4 is set with an 8-bit
manipulation instruction.
RESET input sets this register to 00H.
Figure 4-13:
PF3
PF4
PF8
PF9
Port Function Register (PF3, PF4, PF8 and PF9) Format
7
6
5
4
3
2
1
0
R/W Address
PF37
PF36
PF35
PF34
0
0
0
0
R/W
7
6
5
4
3
2
1
0
R/W Address
PF47
PF46
PF45
PF44
PF43
PF42
PF41
PF40
7
6
5
4
3
2
1
0
PF87
PF86
PF85
PF84
PF83
PF82
PF81
PF80
7
6
5
4
3
2
1
0
PF97
PF96
PF95
PF94
PF93
PF92
PF91
PF90
PFmn
Caution:
R/W
FF53H
FF54H
R/W Address
R/W
FF58H
R/W Address
R/W
FF59H
After
Reset
00H
After
Reset
00H
After
Reset
00H
After
Reset
00H
PFmn Port Function Selection
(m = 3, 4, 8, 9; n = 0 - 7)
0
Port function
1
LCD segment function
For PF4 it is only allowed to set 00H or FFH.
For PF3 only the 4 MSB are relevant.
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Chapter 4
Port Functions
4.4 Port Function Operations
Port operations differ depending on whether the input or output mode is set, as shown below.
4.4.1 Writing to input/output port
(1)
Output mode
A value is written to the output latch by a transfer instruction, and the output latch contents are
output from the pin.
Once data is written to the output latch, it is retained until data is written to the output latch again.
(2)
Input mode
A value is written to the output latch by a transfer instruction, but since the output buffer is OFF, the
pin status does not change.
Once data is written to the output latch, it is retained until data is written to the output latch again.
Caution:
In the case of 1-bit memory manipulation instruction, although a single bit is manipulated the port is accessed as an 8-bit unit. Therefore, on a port with a mixture of input
and output pins, the output latch contents for pins specified as input are undefined
except for the manipulated bit.
4.4.2 Reading from input/output port
(1)
Output mode
The output latch contents are read by a transfer instruction. The output latch contents do not
change.
(2)
Input mode
The pin status is read by a transfer instruction. The output latch contents do not change.
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Chapter 4
Port Functions
4.4.3 Operations on input/output port
(1)
Output mode
An operation is performed on the output latch contents, and the result is written to the output latch.
The output latch contents are output from the pins.
Once data is written to the output latch, it is retained until data is written to the output latch again.
(2)
Input mode
The output latch contents are undefined, but since the output buffer is OFF, the pin status does not
change.
Caution:
In the case of 1-bit memory manipulation instruction, although a single bit is manipulated the port is accessed as an 8-bit unit. Therefore, on a port with a mixture of input
and output pins, the output latch contents for pins specified as input are undefined,
even for bits other than the manipulated bit.
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[MEMO]
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Chapter 5 Clock Generator
5.1 Clock Generator Functions
The clock generator generates the clock to be supplied to the CPU and peripheral hardware.
The following type of system clock oscillators is available.
(1)
Main system clock oscillator
This circuit oscillates at frequencies of 4 to 8.38 MHz. Oscillation can be stopped by executing the
STOP instruction or setting the processor clock control register.
5.2 Clock Generator Configuration
The clock generator consists of the following hardware.
Table 5-1:
Clock Generator Configuration
Item
Configuration
Control register
Processor clock control register (PCC)
Main system clock oscillator
Oscillator
Subsystem clock oscillator
Figure 5-1:
Block Diagram of Clock Generator
Prescaler
X1
X2
Main System
Clock
Oscillator
fX
Clock to peripheral
hardware
Prescaler
fX
fX
2
fX
22
fX
23
fX
24
Selector
STOP
Note: The Standby function is described in the Chapter 21
Standby
Control
Circuit Note
CPU Clock (fCPU)
”Standby Function” on page 373".
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Chapter 5 Clock Generator
5.3 Clock Generator Control Register
The clock generator is controlled by the processor clock control register (PCC).
(1)
Processor clock control register (PCC)
The PCC selects a CPU clock and the division ratio at the CPU clock.
The PCC is set with a 1-bit or 8-bit memory manipulation instruction.
RESET input sets the PCC to 04H.
Figure 5-2:
PCC
Processor Clock Control Register Format
7
6
5
4
3
2
1
0
0
0
0
0
0
PCC2
PCC1
PCC0
PCC2
PCC1
PCC0
CPU Clock Selection (fCPU)
0
0
0
fX
0
0
1
fX /2
0
1
0
fX /22
0
1
1
fX /23
1
0
0
fX /24
Other than above
Caution:
Bit 3 to Bit 7 must be set to 0.
Remark:
fX: Main system clock oscillation frequency
104
Setting prohibited
User’s Manual U16504EE1V1UD00
R/W Address
R/W
FFFBH
After
Reset
04H
Chapter 5
Clock Generator
5.4 System Clock Oscillator
5.4.1 Main system clock oscillator
The main system clock oscillator oscillates with a crystal resonator or a ceramic resonator (standard:
8.0 MHz) connected to the X1 and X2 pins.
External clocks can be input to the main system clock oscillator. In this case, the clock signal is supplied
to the X1 pin and the X2 pin has to be left open.
Figure 5-3 shows an external circuit of the main system clock oscillator.
Figure 5-3:
External Circuit of Main System Clock Oscillator
(a) Crystal and ceramic oscillation
IC
X2
X1
Crystal or
Ceramic
Resonator
(b) External clock
Open
External
Clock
X2
X1
µPD74HCU04
Caution:
Do not execute the STOP instruction if an external clock is input. This is because
when the STOP instruction is used the main system clock operation stops and the X2
pin is connected to VDD1 via a pull-up resistor.
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Chapter 5 Clock Generator
Figure 5-4:
Examples of Oscillator with Bad Connection (1/3)
(a) Wiring of connection circuits is too long
IC
X2
X1
(b) A signal line crosses over oscillation circuit lines
PORTn
(n = 0 to 10, 12, 13)
IC
106
X2
X1
User’s Manual U16504EE1V1UD00
Chapter 5
Figure 5-4:
Clock Generator
Examples of Oscillator with Bad Connection (2/3)
(c) Changing high current is too near a signal conductor
IC
X2
X1
High
Current
(d) Current flows through the grounding line of the oscillator
(potential at points A, B, and C fluctuate)
VDD
Pnm
IC
X2
A
B
X1
C
High
Current
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Chapter 5 Clock Generator
Figure 5-4:
Examples of Oscillator with Bad Connection (3/3)
(e) Signals are fetched
IC
108
X2
X1
User’s Manual U16504EE1V1UD00
Chapter 5
Clock Generator
5.5 Clock Generator Operations
The clock generator generates the following various types of clocks and controls the CPU operating
mode including the standby mode.
• Main system clock fX
• CPU clock fCPU
• Clock to peripheral hardware
The following clock generator functions and operations are determined with the processor clock control
register (PCC).
(a) Upon generation of RESET signal, the lowest speed mode of the main system clock (4 µs
when operated at 8.0 MHz) is selected (PCC = 04H). Main system clock oscillation stops while
low level is applied to RESET pin.
(b) With the main system clock selected, one of the five CPU clock stages (fX, fX/2, fX/22, fX/23 or
fX/24) can be selected by setting the PCC.
(c) With the main system clock selected, two standby modes, the STOP and HALT modes, are
available.
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Chapter 5 Clock Generator
5.6 Changing System Clock and CPU Clock Settings
5.6.1 Time required for switchover between system clock and CPU clock
The system clock and CPU clock can be switched over by means of bit 0 to bit 2 (PCC0 to PCC2)
of the processor clock control register (PCC).
The actual switchover operation is not performed directly after writing to the PCC, but operation continues on the pre-switchover clock for several instructions (see Table 5-2).
Table 5-2:
Maximum Time Required for CPU Clock Switchover
Set Values after
Switchover
PCC2 PCC1 PCC0
Set Values before Switchover
PCC2 PCC1 PCC0 PCC2 PCC1 PCC0 PCC2 PCC1 PCC0 PCC2 PCC1 PCC0 PCC2 PCC1 PCC0
0
0
0
0
0
1
1
0
0
0
0
0
0
1
16 instructions
0
1
0
16 instructions
8 instructions
0
1
1
16 instructions
8 instructions
4 instructions
1
0
0
16 instructions
8 instructions
4 instructions
110
8 instructions
0
0
1
1
1
0
0
4 instructions
2 instructions
1 instruction
4 instructions
2 instructions
1 instruction
2 instructions
1 instruction
1 instruction
2 instructions
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Chapter 5
Clock Generator
5.6.2 System clock and CPU clock switching procedure
This section describes switching procedure between system clock and CPU clock.
Figure 5-5:
System Clock and CPU Clock Switching
VDD
RESET
Interrupt
Request
Signal
System Clock
CPU Clock
fX
fX
Minimum
Speed
Operation
Maximum
Speed
Operation
Wait (16.3 ms: 8.0 MHz)
Internal Reset Operation
(1)
The CPU is reset by setting the RESET signal to low level after power-on. After that, when reset is
released by setting the RESET signal to high level, main system clock starts oscillation. At this
time, oscillation stabilization time (217/fX) is secured automatically.
After that, the CPU starts executing the instruction at the minimum speed of the main system clock
(4 µs when operated at 8.0 MHz).
(2) After the lapse of a sufficient time for the VDD voltage to increase to enable operation at maximum
speeds, the processor clock control register (PCC) is rewritten and the maximum-speed operation
is carried out.
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[MEMO]
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112
Chapter 6
16-Bit Timer 2
6.1 16-Bit Timer 2 Functions
The 16-bit timer 2 (TM2) has the following functions.
• Pulse width measurement
• Divided output of input pulse
• Time stamp function for the DCAN
Figure 6-1 shows 16-Bit Timer 2 Block Diagram.
Figure 6-1:
Timer 2 (TM2) Block Diagram
Prescaler mode
register (PRM2)
ES21 ES20 ES11 ES10 ES01 ES00 PRM21PRM20
CRC21CRC20
16-bit timer mode control
register (TMC2)
TMC22 TPOE
Selector
fx/4
fx/8
fx/32
fx/128
Internal bus
Capture pulse control
register (CRC2)
16-bit timer register (TM2)
INTOVF
ES21, ES20
TI22/S23/P90
Prescaler
1, ½, ¼, 1/8
Noise rejection
circuit
Edge detection
circuit
16-bit capture register (CR22)
INTTM22
ES11, ES10
TI21/P65
Noise rejection
circuit
Edge detection
circuit
16-bit capture register (CR21)
ES01, ES00
TI20/P64
INTTM21
Edge detection
circuit
Noise rejection
circuit
16-bit capture register (CR20)
INTTM20
TPO/S21/P92
TPOE
DCAN
Internal bus
(1)
Pulse width measurement
TM2 can measure the pulse width of an external input signal.
(2)
Divided output of input pulse
The frequency of an input signal can be divided and the divided signal can be output.
(3)
Timer stamp function for the DCAN
An internal signal output of the DCAN-module can be used to build a time stamp function of the
system (please refer to the chapter of the DCAN-module).
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Chapter 6 16-Bit Timer 2
6.2 16-Bit Timer 2 Configuration
Timer 2 consists of the following hardware.
Table 6-1:
Item
Timer 2 Configuration
Configuration
Timer register
16 bits x 1 (TM2)
Register
Capture register: 16 bits × 3 (CR20 to CR22)
16 bit timer mode control register (TMC2)
Control register
Capture pulse control register (CRC2)
Prescaler mode register (PRM2)
(1)
16-bit timer register (TM2)
TM2 is a 16-bit read-only register that counts count pulses.
The counter is incremented in synchronization with the rising edge of an input clock. The count
value is reset to 0000H in the following case:
At RESET input
The count value is undefined in the following case:
- TMC22 is disabled.
Caution:
(2)
When the timer TM2 is disabled, the value of the timer register TM2 will be undefined.
Capture register 20 (CR20)
The valid edge of the TI20 pin can be selected as the capture trigger. Setting of the TI20 valid
edge is performed by setting of the prescaler mode register (PRM2). When the valid edge of the
TI20 is detected, an interrupt request (INTTM20) is generated.
CR20 is read by a 16-bit memory manipulation instruction.
After RESET input, the value of CR20 is undefined.
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Chapter 6 16-Bit Timer 2
(3)
Capture register 21 (CR21)
The valid edge of the TI21 pin can be selected as the capture trigger. Setting of the TI21 valid
edge is performed by setting of the prescaler mode register (PRM2). When the valid edge of the
TI21 is detected, an interrupt request (INTTM21) is generated.
CR21 is read by a 16-bit memory manipulation instruction.
After RESET input, the value of CR21 is undefined.
(4)
Capture register 22 (CR22)
The valid edge of the TI22 pin can be selected as the capture trigger. Setting of the TI22 valid
edge is performed by setting of the prescaler mode register (PRM2). When the valid edge of the
TI22 is detected, an interrupt request (INTTM22) is generated.
CR22 is read by a 16-bit memory manipulation instruction.
After RESET input, the value of CR22 is undefined.
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Chapter 6 16-Bit Timer 2
6.3 16-Bit Timer 2 Control Registers
The following three types of registers are used to control timer 0.
• 16-bit timer mode control register (TMC2)
• Capture pulse control register (CRC2)
• Prescaler mode register (PRM2)
(1)
16-bit timer mode control register (TMC2)
This register sets the 16-bit timer operating mode and controls the prescaler output signals.
TMC0 is set with a 1-bit or 8-bit memory manipulation instruction.
RESET input clears TMC2 value to 00H.
Figure 6-2:
TMC2
16-Bit Timer Mode Control Register (TMC2) Format
7
6
5
4
3
<2>
1
<0>
0
0
0
0
0
TMC22
0
TPOE
TMC2
R/W
FF65H
After
Reset
00H
Timer 2 Operating Mode Selection
0
Operation stop
1
Operation enabled
TPOE
R/W Address
Timer 2 Prescaler Output Control
0
Prescaler signal output disabled
1
Prescaler signal output enabled
Cautions: 1. Before changing the operation mode, stop the timer operation (by setting 0 to
TMC22).
2. Bit 1 and bits 3 to 7 must be set to 0.
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Chapter 6 16-Bit Timer 2
(2)
Capture pulse control register (CRC2)
This register specifies the division ratio of the capture pulse input to the 16-bit capture register
(CR22) from an external source.
CRC2 is set with an 8-bit memory manipulation instruction.
RESET input sets CRC2 value to 00H.
Figure 6-3:
CRC2
Capture Pulse Control Register (CRC2) Format
7
6
5
4
3
2
1
0
0
0
0
0
0
0
CRC21
CRC20
CRC21
CRC20
0
0
Does not divide capture pulse (TI22)
0
1
Divides capture pulse by 2 (TI22/2)
1
0
Divides capture pulse by 4 (TI22/4)
1
1
Divides capture pulse by 8 (TI22/8)
R/W Address
R/W
FF67H
After
Reset
00H
TI22 - Capture Pulse Selection
Cautions: 1. Timer operation must be stopped before setting CRC2.
2. Bits 2 to 7 must be set to 0.
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Chapter 6 16-Bit Timer 2
(3)
Prescaler mode register (PRM2)
This register is used to set 16-bit timer (TM2) count clock and valid edge of TI2n (n = 0 to 2) input.
PRM2 is set with an 8-bit memory manipulation instruction.
RESET input sets PRM2 value to 00H.
Figure 6-4:
PRM2
7
6
5
4
3
2
1
ES21
ES20
ES11
ES10
ES01
ES00
PRM21
Caution:
118
Prescaler Mode Register (PRM2) Format
0
R/W Address
PRM20 R/W
ES21
ES20
TI02 Valid Edge Selection
0
0
Falling edge
0
1
Rising edge
1
0
Setting prohibited
1
1
Both falling and rising edges
ES11
ES10
0
0
Falling edge
0
1
Rising edge
1
0
Setting prohibited
1
1
Both falling and rising edges
ES01
ES00
0
0
Falling edge
0
1
Rising edge
1
0
Setting prohibited
1
1
Both falling and rising edges
PRM21
PRM20
Count Clock Selection
0
0
fX/23
0
1
fX/24
1
0
fX/25
1
1
fX/26
TI01 Valid Edge Selection
TI00 Valid Edge Selection
Timer operation must be stopped before setting PRM2.
User’s Manual U16504EE1V1UD00
FF66H
After
Reset
00H
Chapter 6 16-Bit Timer 2
6.4 16-Bit Timer 2 Operations
6.4.1 Pulse width measurement operations
It is possible to measure the pulse width of the signals input to the timer input pins by using the 16-bit
timer register (TM2). TM2 is used in free-running mode.
Pulse width measurement with free-running counter and one capture register (TI20)
When the edge specified by the prescaler mode register (PRM2) is input to the TI20 pin, the value
of TM2 is taken into 16-bit capture register 20 (CR20) and an external interrupt request signal
(INTTM20) is set.
Any of three edge specifications can be selected - rising, falling, or both edges - by means of bits
2 and 3 (ES00 and ES01) of PRM2.
For valid edge detection, sampling is performed at the count clock selected by PRM2, and a
capture operation is only performed when a valid level is detected twice, thus eliminating noise
with a short pulse width.
Figure 6-5:
Configuration Diagram for Pulse Width Measurement
by Using the Free Running Counter
fx/23
fx/24
fx/25
Selector
(1)
16-bit timer register (TM2)
INTOVF
fx/26
TI20
16-bit capture register 20 (CR20)
INTTM20
Internal bus
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Chapter 6 16-Bit Timer 2
Figure 6-6:
Timing of Pulse Width Measurement Operation by Using the Free Running
Counter and One Capture Register (with Both Edges Specified)
t
Count clock
TM0 count
value
0000H 0001H
D0
D1
FFFFH 0000H
D2
D3
TI00 pin
input
Value loaded
to CR00
D0
D1
D2
INTTM00
INTOVF
(D1 – D0) x t
120
(10000H – D1 + D2) x t
User’s Manual U16504EE1V1UD00
(D3 – D2) x t
D3
Chapter 6 16-Bit Timer 2
(2)
Measurement of three pulse widths with the free running counter
The 16-bit timer register (TM2) allows simultaneous measurement of the pulse widths of the three
signals input to the TI20 to TI22 pins.
When the edge specified by bits 2 and 3 (ES00 and ES01) of prescaler mode register (PRM2) is
input to the TI20 pin, the value of TM2 is taken into 16-bit capture register 20 (CR20) and an external interrupt request signal (INTTM20) is set.
Also, when the edge specified by bits 4 and 5 (ES10 and ES11) of PRM0 is input to the TI21 pin,
the value of TM2 is taken into 16-bit capture register 21 (CR21) and an external interrupt request
signal (INTTM21) is set.
When the edge specified by bits 6 and 7 (ES20 and ES21) of PRM2 is input to the TI22 pin, the
value of TM2 is taken into 16-bit capture register 22 (CR22) and external interrupt request signal
(INTTM22) is set.
Any of three edge specifications can be selected - rising, falling, or both edges - as the valid edges
for the TI20 to TI22 pins by means of bits 2 and 3 (ES00 and ES01), bits 4 and 5 (ES10 and
ES11), and bits 6 and 7 (ES06 and ES07) of PRM2, respectively.
For TI20 pin valid edge detection, sampling is performed at the interval selected by the prescaler
mode register (PRM2), and a capture operation is only performed when a valid level is detected
twice, thus eliminates the noise of a short pulse width.
• Capture operation
Capture register operation in capture trigger input is shown.
Figure 6-7:
CR2m Capture Operation with Rising Edge Specified
Count clock
TM2
n–3
n–2
n–1
n
n+1
TI2m
Rising edge
detection
n
CR2m
INTTM2m
Remark:
m = 0 to 2
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Chapter 6 16-Bit Timer 2
Figure 6-8:
Timing of Pulse Width Measurement Operation by Free Running Counter
(with Both Edges Specified)
t
Count clock
TM2 count value
0000H 0001H
D0
D1
D0
D1
FFFFH 0000H
D2
D3
TI2m pin input
Value loaded
to CR2m
D2
INTTM2m
TI2n pin input
Value loaded
to CR2n
D1
INTTM2n
INTOVF
(D1 – D0) x t
(10000H – D0 + D2) x t
(10000H – D1 + (D2 + 1) x t
Remark:
122
m = 0 to 2,
n = 1, 2
User’s Manual U16504EE1V1UD00
(D3 – D2) x t
D3
Chapter 6 16-Bit Timer 2
6.5 16-Bit Timer 2 Precautions
(1)
Timer start errors
An error with a maximum of one clock may occur until counting is started after timer start, because
the 16-bit timer register (TM2) can be started asynchronously with the count pulse.
Figure 6-9:
16-Bit Timer Register Start Timing
Count pulse
0000H
TM2 count value
0001H
0003H
0002H
0004H
Timer start
(2)
Capture register data retention timings
If the valid edge of the TI2n pin is input during the 16-bit capture register 0m (CR2n) is read,
CR2m performs capture operation, but the capture value is not guaranteed. However, the interrupt
request flag (INTTM2n) is set upon detection of the valid edge.
Figure 6-10:
Capture Register Data Retention Timing
Count pulse
TM2 count value
N-3
N-2
N-1
N
N+1
M-3
M-2
M-1
M
M+1 M+2
M+3
Edge input
Interrupt request flag
Capture read signal
CR0n interrupt value
X
N
N
Capture operation
Remark:
n = 0 to 2
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Chapter 6 16-Bit Timer 2
(3)
Valid edge setting
Set the valid edge of the TI2m/P3m pin after setting bit 2 (TMC22) of the 16-bit timer mode control
register to 0, and then stopping timer operation. Valid edge setting is carried out with bits 2 to 7
(ESm0 and ESm1) of the prescaler mode register (PRM2).
Remark:
(4)
m = 0 to 2
Occurrence of INTTM2n
INTTM2n occurs even if no capture pulse exists, immediately after the timer operation has been
started (TMC02 of TMC2 has been set to 1) with a high level applied to the input pins TI20 to TI22
of 16-bit timer 2. This occurs if the rising edge (with ESn1 and ESn0 of PRM0 set to 0, 1), or both
the rising and falling edges (with ESn1 and ESn0 of PRM2 set to 1, 1) are selected. INTTM2n
does not occur if a low level is applied to TI20 to TI22.
(5)
Timer stop
When the timer TM2 is disabled, the value of the timer register will be undefined.
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Chapter 7 8-Bit Timer/Event Counters 50 and 51
7.1 8-Bit Timer/Event Counters 50 and 51 Functions
The timer 50 and 51 have the following two modes:
• Mode using TM50 and TM51 alone (individual mode)
• Mode using the cascade connection (16-bit cascade mode connection).
(1)
Mode using TM50 and TM51 as 8-bit timers
The timer operate as 8-bit timer/event counters.
They have the following functions:
• Interval timer
• External event counter
• Square-wave output
• PWM output
(2)
Mode using the cascade connection as 16-bit timer
The timer operates as 16-bit timer/event counter.
It has the following functions:
• Interval timer
• External event counter
• Square-wave output
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Chapter 7 8-Bit Timer/Event Counters 50 and 51
7.1.1 8-bit operation modes
(1)
8-bit interval timer
Interrupts are generated at the present time intervals.
Table 7-1:
8-Bit Timer/Event Counter 50 Interval Times
Minimum Interval Width
23
× 1/fX (1 µs)
Maximum Interval Width
2
11
Resolution
× 1/fX (256 µs)
2 × 1/fX (1 µs)
3
25 × 1/fX (4 µs)
213 × 1/fX (1 µs)
25 × 1/fX (4 µs)
27 × 1/fX (16 µs)
215 × 1/fX (4 µs)
27 × 1/fX (16 µs)
28 × 1/fX (32 µs)
216 × 1/fX (8 ms)
28 × 1/fX (32 µs)
29 × 1/fX (64 µs)
217 × 1/fX (16 ms)
29 × 1/fX (64 µs)
211 × 1/fX (256 µs)
219 × 1/fX (65 ms)
211 × 1/fX (256 µs)
Table 7-2:
8-Bit Timer/Event Counter 51 Interval Times
Minimum Interval Width
24
× 1/fX (2 µs)
Maximum Interval Width
212
Resolution
× 1/fX (512 µs)
1/fX (2 µs)
26 × 1/fX (8 µs)
214 × 1/fX (2 µs)
21 × 1/fX (8 µs)
27 ×x 1/fX (16 µs)
215 × 1/fX (4 µs)
23 × 1/fX (16 µs)
28 ×x 1/fX (32 µs)
216 × 1/fX (8 ms)
25 × 1/fX (32 µs)
210 ×x 1/fX (128 µs)
218 × 1/fX (32 ms)
27 × 1/fX (128 µs)
212 × 1/fX (512 µs)
220 × 1/fX (131 ms)
212 × 1/fX (512 µs)
Remarks: 1. fX: Main system clock oscillation frequency
2. Values in parentheses when operated at fX = 8.0 MHz.
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Chapter 7 8-Bit Timer/Event Counters 50 and 51
(2)
External event counter
The number of pulses of an externally input signal can be measured.
(3)
Square-wave output
A square wave with any selected frequency can be output.
Table 7-3:
8-Bit Timer/Event Counter 50 Square-Wave Output Ranges
Minimum Interval Width
Maximum Interval Width
Resolution
23 × 1/fX (1 µs)
211 × 1/fX (256 µs)
23 × 1/fX (1 µs)
25 × 1/fX (4 µs)
213 × 1/fX (1 µs)
25 × 1/fX (4 µs)
27 × 1/fX (16 µs)
215 × 1/fX (4 µs)
27 × 1/fX (16 µs)
28 × 1/fX (32 µs)
216 × 1/fX (8 ms)
28 × 1/fX (32 µs)
29 × 1/fX (64 µs)
217 × 1/fX (16 ms)
29 × 1/fX (64 µs)
211 × 1/fX (256 µs)
219 × 1/fX (65 ms)
211 × 1/fX (256 µs)
Table 7-4:
8-Bit Timer/Event Counter 51 Square-Wave Output Ranges
Minimum Interval Width
Maximum Interval Width
Resolution
24 × 1/fX (2 µs)
212 × 1/fX (512 µs)
1/fX (2 µs)
26 × 1/fX (8 µs)
214 × 1/fX (2 µs)
21 × 1/fX (8 µs)
27 × 1/fX (16 µs)
215 × 1/fX (4 µs)
23 × 1/fX (16 µs)
28 × 1/fX (32 µs)
216 × 1/fX (8 ms)
25 × 1/fX (32 µs)
210 × 1/fX (128 µs)
218 × 1/fX (32 ms)
27 × 1/fX (128 µs)
212 × 1/fX (512 µs)
220 × 1/fX (131 ms)
212 × 1/fX (512 µs)
Remarks: 1. fX: Main system clock oscillation frequency
2. Values in parentheses when operated at fX = 8.0 MHz.
(4)
PWM output
TM50 and TM51 can generate an 8-bit resolution PWM output.
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Chapter 7 8-Bit Timer/Event Counters 50 and 51
7.1.2 16-bit operation modes
(1)
Interval timer
Interrupts are generated at the present interval time.
Table 7-5:
16-Bit Timer/Event Counter TM50/TM51 Interval Times
Minimum Interval Width
(2)
× 1/fX (1 µs)
Maximum Interval Width
Resolution
× 1/fX (65.5 ms)
2 × 1/fX (1 µs)
25 × 1/fX (4 µs)
221 × 1/fX (262 ms)
25 × 1/fX (4 µs)
27 × 1/fX (16 µs)
223 × 1/fX (1.05 ms)
27 × 1/fX (16 µs)
28 × 1/fX (32 µs)
224 × 1/fX (2.15 ms)
28 × 1/fX (32 µs)
29 × 1/fX (64 µs)
225 × 1/fX (4.25 s)
29 × 1/fX (64 µs)
211 × 1/fX (256 µs)
227 × 1/fX (16.7 s)
211 × 1/fX (256 µs)
23
19
2
3
External event counter
The number of pulses of an externally input signal can be measured.
(3)
Square-wave output
A square wave with any selected frequency can be output.
Table 7-6:
16-Bit Timer/Event Counter TM50/TM51 Square-Wave Output Ranges
Minimum Interval Width
Maximum Interval Width
Resolution
23 × 1/fX (1 µs)
219 × 1/fX (65.5 ms)
23 × 1/fX (1 µs)
25 ×x 1/fX (4 µs)
221 × 1/fX (262 ms)
25 × 1/fX (4 µs)
27 × 1/fX (16 µs)
223 × 1/fX (1.05 ms)
27 × 1/fX (16 µs)
28 × 1/fX (32 µs)
224 × 1/fX (2.15 ms)
28 × 1/fX (32 µs)
29 × 1/fX (64 µs)
225 × 1/fX (4.25 s)
29 × 1/fX (64 µs)
211 × 1/fX (256 µs)
227 × 1/fX (16.7 s)
211 × 1/fX (256 µs)
Remarks: 1. fX: Main system clock oscillation frequency
2. Values in parentheses when operated at fX = 8.0 MHz.
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Chapter 7 8-Bit Timer/Event Counters 50 and 51
7.2 8-Bit Timer/Event Counters 50 and 51 Configurations
The 8-bit timer/event counters 50 and 51 consist of the following hardware.
Table 7-7:
8-Bit Timer/Event Counters 50 and 51 Configurations
Item
Configuration
Timer register
8 bits x 2 (TM50, TM51)
Register
Compare register 8 bits x 2 (CR50, CR51)
Timer output
2 (TO50, TO51)
Timer clock select register 50 and 51 (TCL50, TCL51)
Control register
8-bit timer mode control registers 50 and 51 (TMC50, TMC51)
Port mode registers 3 and 9 (PM3, PM9)
Figure 7-1:
8-Bit Timer/Event Counter 50 Block Diagram
Match
Selector
TI50/P34/S27
fX/23
fX/25
fX/27
fX/28
fX/29
fX/211
8-Bit Counter 50 OVF
(TM50)
INTTM50
SQ
INV
R
TIO50/P34/S27
Clear
S
3
R
Selector
TCL502 TCL501 TCL500
Timer Clock Select
Register 50 (TCL50)
Selector
Selector
8-Bit Compare
Register 50
(CR50)
Mask Circuit
Internal Bus
Level
Inversion
TCE50 TMC506 LVS50 LVR50 TMC501 TOE50
Timer Mode Control
Register 50 (TMC50)
Internal Bus
Note: Refer to Figure 7-2 for details of configurations of 8-bit timer/event counters 50 and 51 output
control circuits.
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Chapter 7 8-Bit Timer/Event Counters 50 and 51
Figure 7-2:
8-Bit Timer/Event Counter 51 Block Diagram
Match
Selector
TI51/P91/S22
fX/24
fX/26
fX/27
fX/28
fX/210
fX/212
Mask Circuit
8-Bit Compare
Register 51
(CR51)
8-Bit Counter 51 OVF
(TM51)
Selector
INTTM51
SQ
INV
R
Selector
Internal Bus
TIO51/P91/S22
Clear
S
3
R
Selector
TCL512 TCL511 TCL510
Level
Inversion
TCE51 TMC516 TMC514 LVS51 LVR51 TMC511 TOE51
Timer Clock Select
Register 51 (TCL51)
Timer Mode Control
Register 51 (TMC51)
Internal Bus
Note: Refer to Figure 7-3 for details of configurations of 8-bit timer/event counters 50 and 51 output
control circuits.
Figure 7-3:
Block Diagram of 8-Bit Timer/Event Counters 50 and 51 Output Control Circuit
TMCn1
TMCn6
LVRn
R
LVSn
S
TMCn1
Selector
RESET
Q
TO50/P34/S27/TI50,
TO51/P91/S22/TI51
INV
P34, P91
Output Latch
TMCn6
INTTMn
TCEn
PWM Output Circuit
Timer Output F/F2
INTTMn
R
OVFn
S
Q
Level
F/F
TOEn
Remarks: 1. The section in the broken line is an output control circuit.
2. n = 50, 51
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PM34,
PM91
Chapter 7 8-Bit Timer/Event Counters 50 and 51
(1)
Compare register 50 and 51 (CR50, 51)
These 8-bit registers compare the value set to CR50 to 8-bit timer register 5 (TM50) count value,
and the value set to CR51 to the 8-bit timer register 51 (TM51) count value, and, if they match,
generate interrupts request (INTTM50 and INTTM51, respectively).
CR50 and CR51 are set with an 8-bit memory manipulation instruction. They cannot be set with a
16-bit memory manipulation instruction. The 00H to FFH values can be set.
RESET input sets CR50 and CR51 values to 00H.
Cautions: 1. To use PWM mode, set CRn value before setting TMCn (n = 50, 51) to PWM mode.
2. If the data is set in cascade mode, always set it after stopping the timer.
(2)
8-bit timer registers 50 and 51 (TM50, TM51)
These 8-bit registers count pulses.
TM50 and TM51 are read with an 8-bit memory manipulation instruction.
RESET input sets TM50 and TM51 to 00H.
Caution:
The cascade connection time becomes 00H even when the bit TCE50 of the timer
TM50 is cleared.
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Chapter 7 8-Bit Timer/Event Counters 50 and 51
7.3 8-Bit Timer/Event Counters 50 and 51 Control Registers
The following three types of registers are used to control the 8-bit timer/event counters 50 and 51.
• Timer clock select register 50 and 51 (TCL50, TCL51)
• 8-bit timer mode control registers 50 and 51 (TMC50, TMC51)
• Port mode register 0 (PM3, PM9)
(1)
Timer clock select register 50 (TCL50)
This register sets count clocks of 8-bit timer register 50.
TCL50 is set with an 8-bit memory manipulation instruction.
RESET input sets TCL50 to 00H.
Figure 7-4:
TCL50
Timer Clock Select Register 50 Format
7
6
5
4
3
0
0
0
0
0
2
1
0
R/W Address
TCL502 TCL501 TCL500 R/W
FF71H
TCL502
TCL501
TCL500
8-bit Timer Register 50 Count Clock Selection
0
0
0
TI50 falling edge Note
0
0
1
TI50 rising edge Note
0
1
0
fX/23 (1.0 MHz)
0
1
1
fX/25 (250 KHz)
1
0
0
fX/27 (62.5 KHz)
1
0
1
fX/28 (31.25 KHz)
1
1
0
fX/29 (15.6 KHz)
1
1
1
fX/211 (3.9 KHz)
Other than above
Setting prohibited
Note: When clock is input from the external, timer output (PWM output) cannot be used.
Cautions: 1. When rewriting TCL50 to other data, stop the timer operation beforehand.
2. Set always bits 3 to 7 to "0".
Remarks: 1. fX: Main system clock oscillation frequency
2. TI50: 8-bit timer register 50 input pin
3. Values in parentheses apply to operation with fX = 8.0 MHz
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After
Reset
00H
Chapter 7 8-Bit Timer/Event Counters 50 and 51
(2)
Timer clock select register 51 (TCL51)
This register sets count clocks of 8-bit timer register 51.
TCL51 is set with an 8-bit memory manipulation instruction.
RESET input sets TCL51 to 00H.
Figure 7-5:
TCL51
Timer Clock Select Register 51 Format
7
6
5
4
3
0
0
0
0
0
2
1
0
R/W Address
TCL512 TCL511 TCL510 R/W
FF75H
TCL512
TCL511
TCL510
8-bit Timer Register 51 Count Clock Selection
0
0
0
TI51 falling edge Note
0
0
1
TI51 rising edge Note
0
1
0
fX/24 (500 KHz)
0
1
1
fX/26 (125 KHz)
1
0
0
fX/27 (62.5 KHz)
1
0
1
fX/28 (31.25 KHz)
1
1
0
fX/210 (7.8 KHz)
1
1
1
fX/212 (1.9 KHz)
Other than above
After
Reset
00H
Setting prohibited
Note: When clock is input from the external, timer output (PWM output) cannot be used.
Cautions: 1. When rewriting TCL51 to other data, stop the timer operation beforehand.
2. Set always bits 3 to 7 to "0".
Remarks: 1. fX: Main system clock oscillation frequency
2. TI51: 8-bit timer register 51 input pin
3. Values in parentheses apply to operation with fX = 8.0 MHz
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Chapter 7 8-Bit Timer/Event Counters 50 and 51
(3)
8-bit timer mode control register 50 (TMC50)
This register enables/stops operation of 8-bit timer register 50, sets the operating mode of 8-bit
timer register 50 and controls operation of 8-bit timer/event counter 50 output control circuit.
It selects the R-S flip-flop (timer output F/F 1, 2) setting/resetting, the active level in PWM mode,
inversion enabling/disabling in modes other than PWM mode and 8-bit timer/event counter 5 timer
output enabling/disabling.
TMC50 is set with a 1-bit or 8-bit memory manipulation instruction.
RESET input sets TMC50 to 00H.
Figure 7-6:
<7>
6
TMC50 TCE50 TMC506
8-Bit Timer Mode Control Register 50 Format
5
4
<3>
<2>
0
0
LVS50
LVR50
TOE50
<0>
TMC501 TOE50
R/W Address
R/W
8-Bit Timer/Event Counter 50 Output Control
0
Output disabled (Port mode)
1
Output enabled
TMC501
1
In PWM Mode
In Other Mode
Active level selection
Timer output F/F1 control
0
Active high
Inversion operation disabled
1
Active low
Inversion operation enabled
8-Bit Timer/Event Counter 50 Timer
Output F/F1 Status Setting
LVS50
LVR50
0
0
No change
0
1
Timer output F/F1 reset (0)
1
0
Timer output F/F1 set (1)
1
1
Setting prohibited
TMC506
8-Bit Timer/Event Counter 50 Operating Mode Selection
0
Clear & start mode on match of TM50 and CR50
1
PWM mode (free-running)
TCE50
8-Bit Timer Register 50 Operation Control
0
Operation Stop (TM50 clear to 0)
1
Operation Enable
Cautions: 1. Timer operation must be stopped before setting TMC50.
2. If LVS50 and LVR50 are read after data are set, they will be 0.
3. Be sure to set bit 4 and bit 5 to 0.
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User’s Manual U16504EE1V1UD00
FF70H
After
Reset
00H
Chapter 7 8-Bit Timer/Event Counters 50 and 51
(4)
8-bit timer mode control register 51 (TMC51)
This register enables/stops operation of 8-bit timer register 51, sets the operating mode of 8-bit
timer register 51 and controls operation of 8-bit timer/event counter 51 output control circuit.
It selects the R-S flip-flop (timer output F/F 1, 2) setting/resetting, active level in PWM mode, inversion enabling/disabling in modes other than PWM mode and 8-bit timer/event counter 51 timer
output enabling/disabling.
TMC51 is set with an 1-bit or an 8-bit memory manipulation instruction.
RESET input sets TMC51 to 00H.
Figure 7-7:
<7>
6
TMC51 TCE51 TMC516
8-Bit Timer Mode Control Register 51 Format (1/2)
5
4
<3>
<2>
0
TMC514
LVS51
LVR51
TOE51
<0>
TMC511 TOE51
R/W Address
R/W
Output disabled (Port mode)
1
Output enabled
In PWM Mode
In Other Mode
Active level selection
Timer output F/F1 control
0
Active high
Inversion operation disabled
1
Active low
Inversion operation enabled
00H
8-Bit Timer/Event Counter 51 Timer
Output F/F1 Status Setting
LVS51
LVR50
0
0
No change
0
1
Timer output F/F1 reset (0)
1
0
Timer output F/F1 set (1)
1
1
Setting prohibited
TMC514
FF74H
After
Reset
8-Bit Timer/Event Counter 51 Output Control
0
TMC511
1
Individual of cascade mode connection
0
Individual mode (8-bit timer/counter mode)
1
Cascade connection mode (16-bit timer/counter mode)
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135
Chapter 7 8-Bit Timer/Event Counters 50 and 51
Figure 7-7:
8-Bit Timer Mode Control Register 51 Format (2/2)
TMC516
8-Bit Timer/Event Counter 51 Operating Mode Selection
0
Clear & start mode on match of TM51 and CR51
1
PWM mode (free-running)
TCE51
8-Bit Timer Register 51 Operation Control
0
Operation Stop (TM51 clear to 0)
1
Operation Enable
Cautions: 1. Timer operation must be stopped before setting TMC51.
2. If LVS51 and LVR51 are read after data are set, they will be 0.
3. Be sure to set bit 5 to 0.
(5)
Port mode register 3 (PM3)
This register sets port 3 input/output in 1-bit units.
When using the P34/TI50/TO50/S27 pin for timer output, set PM34 and the output latch of P34
to 0.
PM3 is set with a 1-bit or 8-bit memory manipulation instruction.
RESET input sets PM3 to FFH.
Figure 7-8:
PM3
7
6
5
4
3
2
1
0
R/W Address
PM37
PM36
PM35
PM34
1
1
1
1
R/W
PM3n
136
Port Mode Register 3 Format
PM3n Input/Output mode Selection (n = 4 to 7)
0
Output mode (output buffer ON)
1
Input mode (output buffer OFF)
User’s Manual U16504EE1V1UD00
FF23H
After
Reset
FFH
Chapter 7 8-Bit Timer/Event Counters 50 and 51
(6)
Port mode register 9 (PM9)
This register sets port 9 input/output in 1-bit units.
When using the P91/TI51/TO51/S22 pin for timer output, set PM91 and the output latch of P91
to 0.
PM9 is set with a 1-bit or 8-bit memory manipulation instruction.
RESET input sets PM9 to FFH.
Figure 7-9:
PM9
Port Mode Register 9 Format
7
6
5
4
3
2
1
0
PM97
PM96
PM95
PM94
PM93
PM92
PM91
PM90
PM9n
R/W Address
R/W
FF29H
After
Reset
FFH
PM9n Input/Output mode Selection (n = 0 to 7)
0
Output mode (output buffer ON)
1
Input mode (output buffer OFF)
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Chapter 7 8-Bit Timer/Event Counters 50 and 51
7.4 8-Bit Timer/Event Counters 50 and 51 Operations
7.4.1 Interval timer operations
Setting the 8-bit timer mode control registers (TMC50 and TMC51) as shown in Figure 8-9 allows operation as an interval timer. Interrupts are generated repeatedly using the count value preset in 8-bit compare registers (CR50 and CR51) as the interval.
When the count value of the 8-bit timer register 50 or 51 (TM50, TM51) matches the value set to CR50
or CR51, counting continues with the TM50 or TM51 value cleared to 0 and the interrupt request signal
(INTTM50, INTTM51) is generated.
Count clock of the 8-bit timer register 50 (TM50) can be selected with the timer clock select register 50
(TCL50) and count clock of the 8 bit timer register 51 (TM51) can be selected with the timer clock select
register 51 (TCL51).
Figure 7-10:
8-Bit Timer Mode Control Register Settings for Interval Timer Operation
TCEn TMCn6
TMCn
1
0
TMCn4 LVSn LVRn TMCn1 TOEn
0
0
0/1
0/1
0/1
0/1
TM5n cascadation mode
Clear and start on match of TMn and CRn
TMn operation enable
Setting Method
(1)
Set each register
TCL5n : Selects the count clock
CR5n
: Compare value
TMC5n : Selects the clear and start mode when TM5n and CR5n match.
(TMC5n = 0000xxxx0B, x is not done care).
(2)
When TCE5n = 1 is set, counting starts.
(3)
When the values of TM5n and CR5n match, INTTM5n is generated (TM5n is cleared to 00H).
(4)
Then, INTTM5n is repeatedly generated during the same interval. When counting stops,
set TCE5n = 0.
Remarks: 1. 0/1: Setting 0 or 1 allows another function to be used simultaneously with the interval
timer.
2. n = 50, 51
3. TMC5n4 is only available at TM51.
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Chapter 7 8-Bit Timer/Event Counters 50 and 51
Figure 7-11:
Interval Timer Operation Timings (1/3)
(a) When N = 00H to FFH
t
Count Clock
TMn Count Value
00
01
N
00
01
Clear
N
CRn
N
00
01
N
Clear
N
N
N
Interrupt Acknowledge
Interrupt Acknowledge
TCEn
Count Start
INTTMn
TOn
Interval Time
Interval Time
Interval Time
Remarks: 1. Interval time = (N + 1) x t: N = 00H to FFH
2. n = 50, 51
(b) When CRn = 00H
t
Count clock
TMn 00H
00H
00H
CRn
00H
00H
TCEn
INTTMn
TIOn
Interval time
Remark:
n = 50, 51
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139
Chapter 7 8-Bit Timer/Event Counters 50 and 51
Figure 7-11:
Interval Timer Operation Timings (2/3)
(c) When CRn = FFH
t
Count clock
01
TMn
CRn
FE
FF
FF
00
FE
FF
FF
00
FF
TCEn
INTTMn
Interrupt received
TIOn
Remark:
Interrupt
received
Interval time
n = 50, 51
(d) Operated by CR5n transition (M < N)
Count clock
TMn N 00H
CRn
M
N
N
FFH
00H
M
00H
M
TCEn
INTTMn
TIOn
CRn transition
Remark:
140
TMn overflows since M < N
n = 50, 51
User’s Manual U16504EE1V1UD00
Chapter 7 8-Bit Timer/Event Counters 50 and 51
Figure 7-11:
Interval Timer Operation Timings (3/3)
(e) Operated by CR5n transition (M > N)
Count clock
TMn
CRn
N<1
N
00H
01H
M<1
N
N
M
00H
01H
M
TCEn
INTTMn
TIOn
CRn transition
Remark:
n = 50, 51
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141
Chapter 7 8-Bit Timer/Event Counters 50 and 51
Table 7-8:
8-Bit Timer/Event Counters 50 Interval Times
TCLn2
TCLn1
TCLn0
Minimum Interval Time
Maximum Interval Time
Resolution
0
0
0
T/n input cycle
28 × T/n input cycle
T/n input edge input cycle
0
0
1
T/n input cycle
28 × T/n input cycle
T/n input edge input cycle
0
1
0
23 × 1/fX (1 µS)
211 × 1/fX (256 µs)
23 × 1/fX (1 µs)
0
1
1
25 × 1/fX ((4 µS)
213 × 1/fX (1 ms)
25 × 1/fX (4 µs)
1
0
0
27 × 1/fX (16 µs)
215 × 1/fX (4 ms)
27 × 1/fX (16 µs)
1
0
1
28 × 1/fX (32 µs)
216 × 1/fX (8 ms)
28 × 1/fX (32 µs)
1
1
0
29 × 1/fX (64 µs)
217 × 1/fX (16 ms)
29 × 1/fX (64 µs)
1
1
1
211 × 1/fX (256 µs)
219 × 1/fX (65 ms)
211 × 1/fX (256 µs)
Other than above
Setting prohibited
Table 7-9:
8-Bit Timer/Event Counters 51 Interval Times
TCLn2
TCLn1
TCLn0
Minimum Interval Time
Maximum Interval Time
Resolution
0
0
0
T/n input cycle
28 × T/n input cycle
T/n input edge input cycle
0
0
1
T/n input cycle
28 × T/n input cycle
T/n input edge input cycle
0
1
0
24 × 1/fX (2 µs)
212 × 1/fX (512 µs)
24 × 1/fX (2 µs)
0
1
1
26 × 1/fX (8 µs)
214 × 1/fX (2 ms)
26 × 1/fX (8 µs)
1
0
0
27 × 1/fX (16 µs)
215 × 1/fX (4 ms)
27 × 1/fX (16 µs)
1
0
1
28 × 1/fX (32 µs)
216 × 1/fX (8 ms)
28 × 1/fX (32 µs)
1
1
0
210 × 1/fX (128 µs)
218 × 1/fX (32 ms)
210 × 1/fX (128 µs)
1
1
1
Other than above
212 × 1/fX (512 µs)
220 × 1/fX (131 ms)
Setting prohibited
Remarks: 1. fX: Main system clock oscillation frequency
2. Values in parentheses apply to operation with fX = 8.0 MHz.
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212 × 1/fX (512 µs)
Chapter 7 8-Bit Timer/Event Counters 50 and 51
7.4.2 External event counter operation
The external event counter counts the number of external clock pulses to be input to the
TI50/P34/522/TO50 and TI51/521/522/TO51 pins with 8-bit timer registers 50 and 51 (TM50 and
TM51).
TM50 and TM51 are incremented each time the valid edge specified with timer clock select registers 50
and 51 (TCL50 and TCL51) is input. Either rising or falling edge can be selected.
When the TM50 and TM51 counted values match the values of 8-bit compare registers (CR50 and
CR51), TM50 and TM51 are cleared to 0 and the interrupt request signals (INTTM50 and INTTM51) are
generated.
Figure 7-12:
8-Bit Timer Mode Control Register Setting for External Event Counter Operation
TCEn TMCn6
TMCn
1
0
TMCn4 LVSn LVRn TMCn1 TOEn
0
0
x
x
x
0
TOn output disable
Clear & start mode on match of TMn and CRn
TMn operation enable
Remarks: 1. n = 50, 51
2. x: don’t care
Figure 7-13:
External Event Counter Operation Timings (with Rising Edge Specified)
Count Clock
TMn Count Value
00
01
CRn
02
13
04
05
N-1
N
00
01
02
03
N
TCEn
INTTMn
Remarks: 1. N = 00H to FFH
2. n = 50, 51
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Chapter 7 8-Bit Timer/Event Counters 50 and 51
7.4.3 Square-wave output
A square wave with any selected frequency is output at intervals of the value preset to 8-bit compare
registers (CR50 and CR51).
The TO50/P34/527/TI50 or TO51/P91/522/TI51 pin output status is reversed at intervals of the count
value preset to CR50 or CR51 by setting bit 1 (TMC501) and bit 0 (TOE50) of the 8-bit timer output
control register 5 (TMC50), or bit 1 (TMC511) and bit 0 (TOE51) of the 8-bit timer mode control
register 6 (TMC51) to 1.
This enables a square wave of a selected frequency to be output.
Figure 7-14:
8-Bit Timer Mode Control Register Settings for Square-Wave Output Operation
TCEn TMCn6
TMCn
1
0
TMCn4 LVSn LVRn TMCn1 TOEn
0
0
0/1
0/1
1
1
TOn output enable
Inversion of output on match of TMn and CRn
Specifies TO1 output F/F1 initial value
TM5n cascadation enable
Clear and start mode on match of TMn and CRn
TMn operation enable
Setting Method
(1)
Set the registers
Set the port latch and port mode register to 0.
TCL5n : Selects the count clock
CR5n
: Compare value
TMC5n : Selects the clear and start mode when TM5n and CR5n match.
LVS5n
LVR5n
Setting State of Timer Output flip-flop
1
0
High level output
0
1
Low level output
Inversion of timer output flip-flop enabled
Timer output enabled
→
TOE5n = 1
(2)
(3)
(4)
When TCE5n = 1 is set, the counter starts operating.
When the values of TM5n and CR5n match, the timer output flip-flop inverts. Also, INTTM5n is
generated and TM5n is cleared to 00H.
Then, the timer output flip-flop is inverted for the same interval to output a square wave from
TO5n.
Caution:
When TIO50/P34/S27 or TIO51/P91/S22 pin is used as the timer output, set port mode
register (PM26 or PM27), and output latch to 0.
Remarks: 1. n = 50, 51
2. TMC5n4 is only available at TM51.
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Figure 7-15:
Square-wave Output Operation Timing
Count clock
TMn count value
00H
01H
N-1
02H
N
00H
01H
N-1
02H
N
00H
Count start
CRn
N
Note
T0n
Note: TOn output initial value can be set by bits 2 and 3 (LVRn, LVSn) of the 8-bit timer mode control
register TCMn.
Remark:
n = 50, 51
Table 7-10:
8-Bit Timer/Event Counters 50 Square-Wave Output Ranges
Minimum Pulse Time
23
× 1/fX (1 µs)
Maximum Pulse Time
211
Resolution
× 1/fX (256 µs)
23
× 1/fX (1 µs)
25 × 1/fX (4 µs)
213 × 1/fX (1 ms)
25 × 1/fX (4 µs)
27 × 1/fX (16 µs)
215 × 1/fX (4 ms)
27 × 1/fX (16 µs)
28 × 1/fX (32 µs)
216 × 1/fX (8 ms)
28 × 1/fX (32 µs)
29 × 1/fX (64 µs)
217 × 1/fX (16 ms)
29 × 1/fX (64 µs)
211 × 1/fX (256 µs)
219 × 1/fX (65 ms)
211 × 1/fX (256 µs)
Table 7-11:
8-Bit Timer/Event Counters 51 Square-Wave Output Ranges
Minimum Pulse Time
Maximum Pulse Time
Resolution
24 × 1/fX (2 µs)
212 × 1/fX (512 µs)
24 × 1/fX (2 µs)
26 × 1/fX (8 µs)
214 × 1/fX (2 ms)
26 × 1/fX (8 µs)
27 × 1/fX (16 µs)
215 × 1/fX (4 ms)
27 × 1/fX (16 µs)
28 × 1/fX (32 µs)
216 × 1/fX (8 ms)
28 × 1/fX (32 µs)
210 × 1/fX (128 µs)
218 × 1/fX (32 ms)
210 × 1/fX (128 µs)
212 × 1/fX (512 µs)
220 × 1/fX (131 ms)
212 × 1/fX (512 µs)
Remarks: 1. Main system clock oscillation frequency
2. Values in parentheses when operated at fX = 8.0 MHz.
3. n = 50, 51
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Chapter 7 8-Bit Timer/Event Counters 50 and 51
7.4.4 PWM output operations
Setting the 8-bit timer mode control registers (TMC50 and TMC51) as shown in Figure 8-14 allows
operation as PWM output. Pulses with the duty rate determined by the values preset in 8-bit compare
registers (CR50 and CR51) output from the TO50/P34/527/TI50 or TO51/P91/522/TI51 pin.
Select the active level of PWM pulse with bit 1 of the 8-bit timer mode control register 50 (TMC50) or bit
1 of the 8-bit timer mode control register 51 (TMC51).
This PWM pulse has an 8-bit resolution. The pulse can be converted into an analog voltage by integrating it with an external low-pass filter (LPF). Count clock of the 8-bit timer register 50 (TM50) can be
selected with the timer clock select register 50 (TCL50) and count clock of the 8-bit timer register 51
(TM51) can be selected with the timer clock select register 51 (TCL51).
PWM output enable/disable can be selected with bit 0 (TOE50) of TMC50 or bit 0 (TOE51) of TMC51.
Figure 7-16:
8-Bit Timer Control Register Settings for PWM Output Operation
TMCn4 LVSn LVRn TMCn1 TOEn
TCEn TMCn6
TMCn
1
1
0
0
x
x
0/1
1
TOn output enable
Sets active level
8-bit timer/event counter mode
PWM mode
TMn operation enable
Setting Method
(1)
(2)
(3)
(4)
(5)
Set the port latch and port mode register to "0".
Set the active level width in the 8-bit compare register n (CR5n).
Select the count clock in the timer clock selection register n (TCL5n).
Set the active level in bit 1 (TMC5n1) of TMC5n.
If bit 7 (TCE5n) of TMC5n is set to "1", counting starts.
When counting starts, set TCE5n to "0".
Remarks: 1. n = 50, 51
2. x: don’t care
PWM Output Operation
(1)
(2)
(3)
(4)
(5)
When counting starts, the PWM output (output from TO5n) outputs the inactive level until an
overflow occurs.
When the overflow occurs, the active level specified in step (1) in the setting method is output. The
active level is output until CR5n and the count of the 8-bit counter n (TM5n) match.
The PWM output after CR5n and the count match is the inactive level until an overflow occurs
again.
Steps (2) and (3) repeat until counting stops.
If counting is stopped by TCE5n = 0, the PWM output goes to the inactive level.
Remarks: 1. n = 50, 51
2. TMC5n4 is only available at TM51.
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Figure 7-17:
PWM Output Operation Timing (Active high setting)
CRn Changing
(M N)
Count Clock
00
TMn Count Value
CRn
01
02
FF
00
M
01
02
N
N+1
N
N+2
N+3 00
N
TCEn
INTTMn
OVFn
TOn
Inactive Level
Inactive Level
Remark:
Active Level
Inactive Level
n = 50, 51
Figure 7-18:
PWM Output Operation Timings (CRn0 = 00H, active high setting)
CRn Changing
(M 00)
Count Clock
01
00
TMn Count Value
CRn
M
02
FF
00
01
00
02
FF
00
01
02
00
00
TCEn
INTTMn
OVFn
TOn
Inactive Level
Remark:
Inactive Level
n = 50, 51
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Chapter 7 8-Bit Timer/Event Counters 50 and 51
Figure 7-19:
PWM Output Operation Timings (CRn = FFH, active high setting)
Count Clock
00
TMn Count Value
CRn
02
01
FF
FF
00
01
02
FF
00
FF
01
02
00
FF
TCEn
INTTMn
OVFn
TOn
Inactive Level
Inactive Level
Inactive Level
Active Level
Active Level
Remark:
n = 50, 51
Figure 7-20:
PWM Output Operation Timings (CRn changing, active high setting)
CRn Changing
(N M)
Count
Clock
TMn
Count
Value
CRn0
FF
00
01
02
N
N
N+1
N+2
N
FF
00
01
02
M
M+2 M+3 00
M+1
M
M
Active Level
Inactive Level
TCEn
INTTMn
OVFn
TOn
Active Level
Inactive Level
Remark:
n = 50, 51
Caution:
If CRn is changed during TMn operation, the value changed is not reflected until TMn
overflows.
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Chapter 7 8-Bit Timer/Event Counters 50 and 51
7.5 Operation as interval timer (16-bit operation)
(1)
Cascade (16-bit timer) mode (TM50 and TM51)
The 16-bit resolution timer/counter mode is set by setting bit 4 (TMC514) of the 8-bit timer mode
control register 51 (TMC51) to “1”.
In this mode, TM50 and TM51 operate as a 16-bit interval timer that repeatedly generates an interrupt request at intervals specified by the count value set in advance to 8-bit compare registers 50
and 51 (CR50 and CR51).
Figure 7-21:
8-Bit Timer Mode Control Register Settings for 16-Bit Interval Timer Operation
TCE50 TMC506
1
TMC50
0
LVS50 LVR50 TMC501 TOE50
0
0
0/1
0/1
0/1
0/1
Clear and start on match of TM50/TM51 and CR50/CR51
TM50 operation enable
TMC514 LVS51
TCE51 TMC516
TMC51
1
0
0
1
0/1
LVR51 TMC511 TOE51
0/1
0/1
0
16-bit timer/counter mode
Clear and start on match of TM50/TM51 and CR50/CR51
TM51 operation enable
Remark:
0/1: Setting 0 or 1 allows another function to be used simultaneously with the interval timer.
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Chapter 7 8-Bit Timer/Event Counters 50 and 51
<Setting>
<1> Set each register.
• CL50:
TCL50 selects a count clock.
TCL51 does not have to be set.
• CR50 and CR51:
Compare values, where CR50 indicates the low byte and CR51
indicates the high byte. (Each compare value can be set in a
range of 00H to FFH).
• TMC50 and TMC51: Select the mode that clears and starts the timer on coincidence
between TM50 and CR50 (TM51 and CR51).
TM50 → TMC50 = 0000xxxxB x: don’t care
TM51 → TMC51 = 0001xxxxB x: don’t care
<2> By setting TCE51 to 1 for TMC51 first, and then setting TCE50 to 1 for TMC50, the count
operation is started.
<3> When the value of CR50 (low byte) and CR51 (high byte) matches with TM50 and TM51,
the interrupt INTTM50 is generated (TM50 and TM51 are cleared to 00H).
<4> After that, INTTM50 is repeatedly generated at the same interval.
Cautions: 1. Be sure to set the compare registers (CR50 and CR51) after stopping the timer
operation.
2. Even if the timers are connected in cascade, TM51 generates INTTM51 when the
count value of TM51 coincides with the value of CR51. Be sure to mask TM51 to
disable it from generating an interrupt.
3. Set TCE50 and TCE51 in the order of TM51, then TM50.
4. Counting can be started or stopped by setting or clearing only TCE50 of TM50 to
1 or 0.
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Figure 7-22 shows an example of timing in the 16-bit resolution cascade mode.
Figure 7-22:
16-Bit Resolution Cascade Mode (with TM50 and TM51)
Count
clock
TM50
00H
TM51
00H
01H
N N+1
CR50
N
CR51
M
FFH 00H
FFH 00H
01H
02H
FFH 00H 01H
M-1 M
N 00H 01H
A 00H
00H
B 00H
TCE50
TCE51
INTTM50
Interval time
TO50
Interrupt request
Operation
Enables operation
generated
stops
Counting starts
Level inverted
Counter cleared
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Chapter 7 8-Bit Timer/Event Counters 50 and 51
Table 7-12:
8-Bit Timer/Event Counters Interval Times (16-Bit Timer/Event Counter Mode)
TCL502
TCL501
TCL500
Minimum Interval Time
Maximum Interval Time
Resolution
0
0
0
TI50 input cycle
216 × TIn input cycle
TIn input cycle
0
0
1
TI50 input cycle
216 × TIn input cycle
TIn input cycle
0
1
0
23 × 1/fX (1 µs)
219 × 1/fX (65.5 ms)
23 × 1/fX (1 µs)
0
1
1
25 × 1/fX (4 µs)
221 × 1/fX (262 ms)
25 × 1/fX (4 µs)
1
0
0
27 × 1/fX (16 µs)
223 × 1/fX (1.05 s)
27 × 1/fX (8 µs)
1
0
1
28 × 1/fX (32 µs)
224 × 1/fX (2.15 s)
28 × 1/fX (16 µs)
1
1
0
29 × 1/fX (64 µs)
225 × 1/fX (4.25 s)
29 × 1/fX (32 µs)
1
1
1
211 × 1/fX (256 µs)
227 × 1/fX (16.7 s)
211 × 1/fX (256 µs)
Table 7-13:
TCL502
TCL501
TCL500
8-Bit Timer/Event Counter Square-Wave Output Ranges
(16-Bit Timer/Event Counter Mode)
Minimum Pulse Width
× 1/fX (1 µs)
Maximum Pulse Width
× 1/fX (65,5 ms)
1
0
0
1
1
25 × 1/fX (4 µs)
221 × 1/fX (262 ms)
25 × 1/fX (4 µs)
1
0
0
27 × 1/fX (16 µs)
223 × 1/fX (1.05 s)
27 × 1/fX (8 µs)
1
0
1
28 × 1/fX (32 µs)
224 × 1/fX (2.15 s)
28 × 1/fX (16 µs)
1
1
0
29 × 1/fX (64 µs)
225 × 1/fX (4.25 s)
29 × 1/fX (32 µs)
1
1
1
211 × 1/fX (256 µs)
227 × 1/fX (16.7 s)
211 × 1/fX (256 µs)
The clock selection in the cascade mode (16-bit timer/event counter mode) is done by
the register TCL50.
Remarks: 1. fX: Main system clock oscillation frequency.
2. Values in parentheses when operated at fX = 8.0 MHz.
152
23
× 1/fX (1 µs)
0
Caution:
219
Resolution
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Chapter 7 8-Bit Timer/Event Counters 50 and 51
7.6 Cautions on 8-Bit Timer/Event Counters 50 and 51
(1)
Timer start errors
An error with a maximum of one clock might occur concerning the time required for a match signal
to be generated after the timer starts. This is because 8-bit timer registers 50 and 51 are started
asynchronously with the count pulse.
Figure 7-23:
8-bit Timer Registers 50 and 51 Start Timings
Count Pulse
TMn Count Value
00H
01H
02H
03H
04H
Timer Start
Remark:
(2)
n = 50, 51
Compare registers 50 and 51 sets
The 8-bit compare registers (CR50 and CR51) can be set to 00H.
Thus, when an 8-bit compare register is used as an event counter, one-pulse count operation can
be carried out.
Figure 7-24:
External Event Counter Operation Timings
TIn Input
CRn
TMn Count Value
00H
00H
00H
00H
00H
TOn
Interrupt Request Flag
Remark:
n = 50, 51
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Chapter 7 8-Bit Timer/Event Counters 50 and 51
(3)
Operation after compare register change during timer count operation
If the values after the 8-bit compare registers (CR50 and CR51) are changed are smaller than
those of 8-bit timer registers (TM50 and TM51), TM50 and TM51 continue counting, overflow and
then restarts counting from 0. Thus, if the value (M) after CR50 and CR51 change is smaller than
that (N) before change it is necessary to restart the timer after changing CR50 and CR51.
Figure 7-25:
Timings after Compare Register Change during Timer Count Operation
Count Pulse
CRn
TMn Count Value
Remark:
154
N
X-1
M
X
FFFFH
0000H
n = 50, 51
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0001H
0002H
Chapter 8
8-Bit Timer 52
8.1 8-Bit Timer 52 Functions
The 8-bit timer 52 (TM52) has the following function:
• Interval timer
(1)
8-bit interval timer
Interrupts are generated at the preset time intervals.
Table 8-1:
8-Bit Timer 52 Interval Times
Minimum Interval Width
Maximum Interval Width
Resolution
23 × 1/fX (1 µs)
211 × 1/fX (256 µs)
23 × 1/fX (1 µs)
24 × 1/fX (2 µs)
212 × 1/fX (512 µs)
24 × 1/fX (2 µs)
25 × 1/fX (4 µs)
213 × 1/fX (1 µs)
25 × 1/fX (4 µs)
27 × 1/fX (16 µs)
215 × 1/fX (4 ms)
27 × 1/fX (16 µs)
29 × 1/fX (64 µs)
217 × 1/fX (16 ms)
29 × 1/fX (64 µs)
211 × 1/fX (256 µs)
219 × 1/fX (65.5 ms)
211 × 1/fX (256 µs)
Remarks: 1. fX: Main system clock oscillation frequency
2. Values in parentheses when operated at fX = 8.0 MHz.
8.2 8-Bit Timer 52 Configurations
The 8-bit timer 52 consists of the following hardware.
Table 8-2:
8-Bit Timer 52 Configurations
Item
Configuration
Timer register
8 bit (TM52)
Compare Register
8 bit (CR52)
Timer output
none
Control register
Timer clock select register 52 (TCL52)
8-bit timer mode control register 52 (TMC52)
Remarks: 1. fX: Main system clock oscillation frequency
2. Values in parentheses when operated at fX = 8.0 MHz.
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Chapter 8 8-Bit Timer 52
Figure 8-1:
8-Bit Timer/Event Counter 52 Block Diagram
Internal Bus
8-Bit Compare
Register (CR50)
fx/23
fx/24
fx/25
fx/27
fx/29
fx/211
Selector
Match
INTTM52
8-Bit Timer
Register n (TM52)
Output
Control
Circuit Note
Clear
Meter C/D
4
TCL TCL TCL
522 521 520
TCE
52
Timer Clock Select
Register 52
8-Bit Timer Mode
Control Register 52
Internal Bus
Note: The output signal of the timer TM52 can be used as clock input of the meter controller/driver.
(1)
Compare register 52 (CR52)
This 8-bit register compares the value with the count value of the 8-bit timer register 52 (TM52).
If they match, an interrupt request (INTTM52) is generated.
CR52 is set with an 8-bit memory manipulation instruction.
RESET input sets CR52 value to 00H.
(2)
8-bit timer register 52 (TM52)
This 8-bit register counts pulses.
TM52 is read with an 8-bit memory manipulation instruction.
RESET input sets TM52 to 00H.
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Chapter 8 8-Bit Timer 52
8.3 8-Bit Timer 52 Control Registers
The following two types of registers are used to control the 8-bit timer 52.
• Timer clock select register 52 (TCL52)
• 8-bit timer mode control register 52 (TMC52)
(1)
Timer clock select register 52 (TCL52)
This register sets the count clock of the 8-bit timer register 52.
TCL52 is set with an 8-bit memory manipulation instruction.
RESET input sets TCL52 to 00H.
Figure 8-2:
TCL52
7
6
5
4
3
0
0
0
0
0
2
1
0
R/W Address
TCL522 TCL521 TCL520 R/W
TCL522
TCL521
TCL520
8-bit Timer Register 52 Count Clock Selection
0
1
0
fX/23 (1.0 MHz)
0
1
1
fX/24 (500 KHz)
1
0
0
fX/25 (250 KHz)
1
0
1
fX/27 (62.5 KHz)
1
1
0
fX/29 (15.6 KHz)
1
1
1
fX/211 (3.9 KHz)
Other than above
Caution:
Timer Clock Select Register 52 Format
FF79H
After
Reset
00H
Setting prohibited
When rewriting TCL52 to other data, stop the timer operation beforehand.
Remarks: 1. fX: Main system clock oscillation frequency
2. Values in parentheses when operated at fX = 8.0 MHz.
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Chapter 8 8-Bit Timer 52
(2)
8-bit timer mode control register 52 (TMC52)
This register enables/stops the operation of the 8-bit timer register 52.
TMC52 is set with an 1-bit or an 8-bit memory manipulation instruction.
RESET input sets TMC52 to 04H.
Figure 8-3:
<7>
TMC52 TCE52
8-Bit Timer Output Control Register Format
6
5
4
3
2
1
0
R/W Address
0
0
0
0
0
TMC521
0
R/W
TMC521
00H
Timer Output F/F1 Control
0
Inversion operation disabled
1
Inversion operation enabled
TCE52
FF78H
After
Reset
8-Bit Timer Register 50 Operation Control
0
Operation Stop (TM50 clear to 0)
1
Operation Enable
Cautions: 1. Timer operation must be stopped before setting TMC52.
2. Be sure to set bit 0 to 0 and bit 2 to bit 6 to 0.
Remark:
158
In case the timer TM52 is used as clock input of the meter C/D. The bit TMC521 has to be
set to 1.
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Chapter 8 8-Bit Timer 52
8.4 8-Bit Timer 52 Operations
8.4.1 Interval timer operations
Setting the 8-bit timer mode control register (TMC52) as shown in Figure 8-4 allows operation as an
interval timer. An interrupt is generated repeatedly using the count value preset in the 8-bit compare
register (CR52) as the interval.
When the count value of the 8-bit timer register 52 (TM52) matches the value set to CR52, counting
continues with the TM52 value cleared to 0 and the interrupt request signal INTTM52 is generated.
Count clock of the 8-bit timer register 52 (TM52) can be selected with the timer clock select register 52
(TCL52).
Figure 8-4:
8-Bit Timer Mode Control Register Settings for Interval Timer Operation
TCE52
TMC52
1
0
0
0
0
0
0
0
TM52 operation enable
Figure 8-5:
Interval Timer Operation Timings (1/3)
(a) When N = 00H to FFH
t
Count Clock
TM52 Count Value
00
01
N
00
01
Clear
CR52
N
N
00
01
N
Clear
N
N
N
Interrupt Acknowledge
Interrupt Acknowledge
TCE52
Count Start
INTTM52
Interval Time
Remark:
Interval Time
Interval Time
Interval time = (N + 1) x t: N = 00H to FFH
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Chapter 8 8-Bit Timer 52
Figure 8-5:
Interval Timer Operation Timings (2/3)
(b) When CR52 = 00H
t
Count clock
TM52 00H
00H
00H
CR52
00H
00H
TCE52
INTTM52
Interval time
(c) When CR52 = FFH
t
Count clock
TM52
CR52
01
FF
FE
FF
00
FE
FF
FF
00
FF
TCE52
INTTM52
Interrupt received
Interval time
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Interrupt
received
Chapter 8 8-Bit Timer 52
Figure 8-5:
Interval Timer Operation Timings (3/3)
(d) Operated by CR52 transition (M < N)
Count clock
TM52 N 00H
CR52
M
N
FFH
00H
N
M
00H
M
TCE52
INTTM52
CR52 transition
TM52 overflows since M < N
(e) Operated by CR52 transition (M > N)
Count clock
TM52
N
CR52
N
00H
01H
N
1
M
00H
01H
M
TCE52
INTTM52
CR52 transition
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Chapter 9
Watch Timer
9.1 Watch Timer Functions
The watch timer has the following functions:
• Watch timer
• Interval timer
The watch timer and the interval timer can be used simultaneously.
The Figure 9-1 shows Watch Timer Block Diagram.
Block Diagram of Watch Timer
Selector
Figure 9-1:
f X /2 11
9-bit prescaler
fW
fW
24
fW
25
fW
26
fW
27
fW
28
5-bit counter
fW
29
INTWT
Clear
Selector
fX/2
Selector
Clear
7
WTM7 WTM6 WTM5 WTM4 WTM3
INTWTI
0
WTM1 WTM0
Watch timer mode
control register (WTM)
Internal bus
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Chapter 9
(1)
Watch Timer
Watch timer
When the main system clock or subsystem clock is used, interrupt requests (INTWT) are
generated at 0.25 second intervals.
(2)
Interval timer
Interrupt requests (INTWTI) are generated at the preset time interval.
Table 9-1:
Interval Timer Interval Time
Interval Time
When operated at
fX = 8.00 MHz
When operated at
fX = 4.00 MHz
24/fW
256 µs
512 µs
25/fW
512 µs
1 ms
26/fW
1 ms
2 ms
27/fW
2 ms
4 ms
28/fW
4 ms
8.19 ms
29/fW
8.19 ms
16.3 ms
Remarks: 1. fX: Main system clock oscillation frequency
2. fW: Watch timer clock frequency
9.2 Watch Timer Configuration
The watch timer consists of the following hardware.
Table 9-2:
Watch Timer Configuration
Item
164
Configuration
Counter
5 bits × 1
Prescaler
9 bits × 1
Control register
Watch timer mode control register (WTM)
User’s Manual U16504EE1V1UD00
Chapter 9 Watch Timer
9.3 Watch Timer Mode Register (WTM)
This register sets the watch timer count clock, the watch timer operating mode, and prescaler interval
time and enables/disables prescaler and 5-bit counter operations. WTM is set with a 1-bit or
8-bit memory manipulation instruction.
RESET input sets WTM to 00H.
Figure 9-2:
WTM
Watch Timer Mode Control Register (WTM) Format (1/2)
7
6
5
4
3
2
1
0
WTM7
WTM6
WTM5
WTM4
WTM3
0
WTM1
WTM0
WTM7
R/W Address
R/W
FF41H
After
Reset
00H
Watch Timer Count Clock Selection
0
Input clock set to fX / 27
1
Input clock set to fX / 211
Prescaler Interval Time Selection
∗
WTM6
WTM5
WTM4
fX = 8.00 MHz Operation
fX = 4.00 MHz Operation
fW =fX/27
fW =fX/27
0
0
0
24/fW (256 µs)
24/fW (512 µs)
0
0
1
25/fW (512 µs)
25/fWw (1 ms)
0
1
0
26/fW (1 ms)
26/fW (2 ms)
0
1
1
27/fW (2 ms)
27/fW (4 ms)
1
0
0
28/fW (4 ms)
28/fW (8.19 ms)
1
0
1
29/fW (8.19 ms)
29/fW (16.38 ms)
Other than above
WTM3
Setting prohibited
Watch Operating Mode Selections
0
Normal operating mode (interrupt generation at 214/fW)
1
Fast feed operating mode (interrupt generation at 25/fW)
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Chapter 9
Figure 9-2:
Watch Timer Mode Control Register (WTM) Format (2/2)
WTM1
5-Bit Counter Operation Control
0
Clear after operation stop
1
Operation enable
WTM0
Caution:
Watch Timer
Prescaler Operation Control
0
Clear after operation stop
1
Operation enable
When the watch timer is used, the prescaler should not be cleared frequently. When
rewriting WTM4 to WTM6 to other data, stop the timer operation beforehand.
Remarks: 1. fW: Watch timer clock frequency (fX/27 or fX/211)
2. fX: Main system clock oscillation frequency
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Chapter 9 Watch Timer
9.4 Watch Timer Operations
9.4.1 Watch timer operation
When the 8.00-MHz main system clock is used, the timer operates as a watch timer and generates
interrupt requests at a constant time interval.
When bit 0 (WTM0) and bit 1 (WTM1) of the watch timer mode control register (WTM) are set to 1, the
count operation starts. When set to 0, the 5-bit counter is cleared and the count operation stops.
For simultaneous operation of the interval timer, zero-second start can be only the watch timer by
setting WTM1 to 0. However, since the 9-bit prescaler is not cleared the first overflow of the watch timer
(INTWT) after zero-second start may include an error of up to 29 × 1/fW.
9.4.2 Interval timer operation
The watch timer operates as interval timer which generates interrupt request repeatedly at an interval of
the preset count value.
The interval time can be selected with bits 4 to 6 (WTM4 to WTM6) of the watch timer mode control
register (WTM).
Table 9-3:
Interval Timer Operation
fX = 8.00 MHz Operation fX = 4.00 MHz Operation
WTM6
WTM5
WTM4
Interval Time
0
0
0
24 × 1/fW
256 µs
512 µs
0
0
1
25 × 1/fW
512 µs
1 ms
0
1
0
26 × 1/fW
1 ms
2 ms
0
1
1
27 × 1/fW
2 ms
4 ms
1
0
0
28 × 1/fW
4 ms
8.19 ms
1
0
1
29 × 1/fW
8.19 ms
16.3 ms
Other than above
Setting prohibited
Remarks: 1. fX : Main system clock oscillation frequency
2. fW : Watch timer clock frequency
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Chapter 9
Figure 9-3:
Watch Timer
Operation Timing of Watch Timer/Interval Timer
5-bit counter
0H
Overflow
Start
Overflow
Count clock fw
Watch timer
interrupt INTWT
Interrupt time of watch timer
Interrupt time of watch timer
Interval timer
interrupt INTWTI
Interval timer
(T)
Remark:
168
T
fW : Watch timer clock frequency
User’s Manual U16504EE1V1UD00
Chapter 10 Watchdog Timer
10.1 Watchdog Timer Functions
The watchdog timer has the following functions:
• Watchdog timer
• Interval timer
Caution:
(1)
Select the watchdog timer mode or the interval timer mode with the watchdog timer
mode register (WDTM).
Watchdog timer mode
Upon detection of an inadvertent program loop, a non-maskable interrupt request or RESET can
be generated.
Table 10-1:
Watchdog Timer Inadvertent Program Overrun Detection Times
Runaway Detection Time
212
Remark:
× 1/fX
212 × 1/fX (512 µs)
213 × 1/fX
213 × 1/fX (1 ms)
214 × 1/fX
214 × 1/fX (2 ms)
215 × 1/fX
215 × 1/fX (4 ms)
216 × 1/fX
216 × 1/fX (8.19 ms)
217 × 1/fX
217 × 1/fX (16.38 ms)
218 × 1/fX
218 × 1/fX (32.76 ms)
220 × 1/fX
220 × 1/fX (131 ms)
Figures in parentheses apply to operation with fX = 8.0 MHz.
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Chapter 10
(2)
Watchdog Timer
Interval timer mode
Interrupts are generated at the preset time intervals.
Table 10-2:
Interval Times
Interval Time
Remark:
170
212 × 1/fX
212 × 1/fX (512 µs)
213 × 1/fX
213 × 1/fX (1 ms)
214 × 1/fX
214 × 1/fX (2 ms)
215 × 1/fX
215 × 1/fX (4 ms)
216 × 1/fX
216 × 1/fX (8.19 ms)
217 × 1/fX
217 × 1/fX (16.38 ms)
218 × 1/fX
218 × 1/fX (32.76 ms)
220 × 1/fX
220 × 1/fX (131 ms)
Figures in parentheses apply to operation with fX = 8.0 MHz.
User’s Manual U16504EE1V1UD00
Chapter 10
Watchdog Timer
10.2 Watchdog Timer Configuration
The watchdog timer consists of the following hardware.
Table 10-3:
Watchdog Timer Configuration
Item
Configuration
Control register
Figure 10-1:
Timer clock select register (WDCS)
Watchdog timer mode register (WDTM)
Watchdog Timer Block Diagram
Internal Bus
f X /212
Prescaler
WDTMK
fX
25
fX
26
fX
27
fX
28
fX
29
RUN
fX
211
WDTIF
Selector
fX
24
Control
Circuit
8-Bit
Counter
INTWDT
Maskable Interrupt
Request
RESET
INTWDT
Non-Maskable
Interrupt Request
3
WDCS2 WDCS1 WDCS0
WDTM4 WDTM3
Watchdog Timer Clock
Selection Register
Watchdog Timer
Mode Register
Internal Bus
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Chapter 10
Watchdog Timer
10.3 Watchdog Timer Control Registers
The following two types of registers are used to control the watchdog timer.
• Watchdog timer clock select register (WDCS)
• Watchdog timer mode register (WDTM)
(1)
Watchdog timer clock select register (WDCS)
This register sets the watchdog timer count clock.
WDCS is set with 8-bit memory manipulation instruction.
RESET input sets WDCS to 00H.
Figure 10-2:
WDCS
Caution:
Timer Clock Select Register 2 Format
7
6
5
4
3
2
1
0
0
0
0
0
0
WDCS2
WDCS1
WDCS0
Overflow Time of Watchdog Timer
0
0
0
fX/212 (512 µs)
0
0
1
fX/213 (1 ms)
0
1
0
fX/214 (2 ms)
0
1
1
fX/215 (4 ms)
1
0
0
fX/216 (8.19 ms)
1
0
1
fX/217 (16.38 ms)
1
1
0
fX/218 (32.76 ms)
1
1
1
fX/220 (131 ms)
WDCS2 WDCS1 WDCS0 R/W
FF42H
When rewriting WDCS to other data, stop the timer operation beforehand.
Remarks: 1. fX: Main system clock oscillation frequency
2. Figures in parentheses apply to operation with fX = 8.0 MHz.
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R/W Address
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After
Reset
00H
Chapter 10
(2)
Watchdog Timer
Watchdog timer mode register (WDTM)
This register sets the watchdog timer operating mode and enables/disables counting.
WDTM is set with an 1-bit or an 8-bit memory manipulation instruction.
RESET input sets WDTM to 00H.
Figure 10-3:
WDTM
<7>
6
5
RUN
0
0
Watchdog Timer Mode Register Format
4
3
WDTM4 WDTM3
2
1
0
R/W Address
0
0
0
R/W
FFF9H
After
Reset
00H
Watchdog Timer Operation Mode Selection Note 1
WDTM4
WDTM3
0
X
Interval timer mode
(Maskable interrupt occurs upon generation of an overflow)
1
0
Watchdog timer mode 1
(Non-maskable interrupt occurs upon generation of an overflow)
1
1
Watchdog timer mode 2
(Reset operation is activated upon generation of an overflow)
Watchdog Timer Operation Mode Selection Note 2
RUN
0
Count stop
1
Counter is cleared and counting starts
Notes: 1. Once set to 1, WDTM3 and WDTM4 cannot be cleared to 0 by software.
2. Once set to 1, RUN cannot be cleared to 0 by software.
Thus, once counting starts, it can only be stopped by RESET input.
Caution:
When 1 is set in RUN so that the watchdog timer is cleared, the actual overflow time
is up to 0.5% shorter than the time set by watchdog timer clock select register.
Remark:
x = don't care.
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Chapter 10
Watchdog Timer
10.4 Watchdog Timer Operations
10.4.1 Watchdog timer operation
When bit 4 (WDTM4) of the watchdog timer mode register (WDTM) is set to 1, the watchdog timer is
operated to detect any inadvertent program loop.
The watchdog timer count clock (inadvertent program loop detection time interval) can be selected with
bits 0 to 2 (WDCS0 to WDCS2) of the timer clock select register (WDCS).
Watchdog timer starts by setting bit 7 (RUN) of WDTM to 1. After the watchdog timer is started, set
RUN to 1 within the set overrun detection time interval. The watchdog timer can be cleared and counting is started by setting RUN to 1. If RUN is not set to 1 and the inadvertent program loop detection time
is past, system reset or a non-maskable interrupt request is generated according to the WDTM bit 3
(WDTM3) value.
The watchdog timer can be cleared when RUN is set to 1.
The watchdog timer continues operating in the HALT mode but it stops in the STOP mode. Thus, set
RUN to 1 before the STOP mode is set, clear the watchdog timer and then execute the STOP instruction.
Cautions: 1. The actual overrun detection time may be shorter than the set time by a maximum
of 0.5%.
2. When the subsystem clock is selected for CPU clock, watchdog timer count operation is stopped.
Table 10-4:
Watchdog Timer Overrun Detection Time
WDCS2
WDCS1
WDCS0
Runaway Detection Time
0
0
0
fX/212 (512 µs)
0
0
1
fX/213 (1 ms)
0
1
0
fX/214 (2 ms)
0
1
1
fX/215 (4 ms)
1
0
0
fX/216 (8.19 ms)
1
0
1
fX/217 (16.38 ms)
1
1
0
fX/218 (32.76 ms)
1
1
1
fX/220 (131 ms)
Remarks: 1. fX: Main system clock oscillation frequency
2. Figures in parentheses apply to operation with fX = 8.0 MHz.
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Chapter 10
Watchdog Timer
10.4.2 Interval timer operation
The watchdog timer operates as an interval timer which generates interrupts repeatedly at an interval of
the preset count value when bit 3 (WDTM3) of the watchdog timer mode register (WDTM) is set to 0,
respectively.
When the watchdog timer operates as interval timer, the interrupt mask flag (TMMK4) and priority
specify flag (TMPR4) are validated and the maskable interrupt request (INTWDT) can be generated.
Among maskable interrupts, the INTWDT default has the highest priority.
The interval timer continues operating in the HALT mode but it stops in STOP mode. Thus, set bit 7
(RUN) of WDTM to 1 before the STOP mode is set, clear the interval timer and then execute the STOP
instruction.
Cautions: 1. Once bit 4 (WDTM4) of WDTM is set to 1 (with the watchdog timer mode selected),
the interval timer mode is not set unless RESET input is applied.
2. The interval time just after setting with WDTM may be shorter than the set time by
a maximum of 0.5%.
3. When the subsystem clock is selected for CPU clock, watchdog timer count
operation is stopped.
Table 10-5:
Interval Timer Interval Time
WDCS2
WDCS1
WDCS0
Interval Time
0
0
0
fX/212 (512 µs)
0
0
1
fX/213 (1 ms)
0
1
0
fX/214 (2 ms)
0
1
1
fX/215 (4 ms)
1
0
0
fX/216 (8.19 ms)
1
0
1
fX/217 (16.38 ms)
1
1
0
fX/218 (32.76 ms)
1
1
1
fX/220 (131 ms)
Remarks: 1. fX: Main system clock oscillation frequency
2. Figures in parentheses apply to operation with fX = 8.0 MHz.
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[MEMO]
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Chapter 11
Clock Output Control Circuit
11.1 Clock Output Control Circuit Functions
The clock output control circuit is intended for carrier output during remote controlled transmission and
clock output for supply to peripheral LSI. Clocks selected with the clock output selection register (CKS)
are output from the PCL/P61/SGOA pin.
Follow the procedure below to route clock pulses to the SGOA pin:
(1) Select the clock pulse output frequency (with clock pulse output disabled) with bits 0 to 3
(CCS0 to CCS2) of CKS.
(2) Set the P61 output latch to 0.
(3) Set bit 1 (PM61) of port mode register 6 to 0 (set to output mode).
(4) Set bit 4 (CLOE) of clock output selection register to 1.
Caution:
Clock output cannot be used when setting P61 output latch to 1.
Remark:
When clock output enable/disable is switched, the clock output control circuit does not
generate pulses with smaller widths than the original signal carries. (See the portions
marked with * in Figure 10-1).
Figure 11-1:
Remote Controlled Output Application Example
CLOE
PCL/P61/SGOA
Pin Output
*
*
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Chapter 11
Clock Output Control Circuit
11.2 Clock Output Control Circuit Configuration
The clock output control circuit consists of the following hardware.
Table 11-1:
Clock Output Control Circuit Configuration
Item
Configuration
Control register
Figure 11-2:
Clock output selection register (CKS)
Port mode register 6 (PM6)
Clock Output Control Circuit Block Diagram
fX
f X /22
f X /23
f X /24
f X /2
5
f X /2
6
Selector
f X /2
Synchronizing
Circuit
PCL /P61/SGOA
f X /27
4
P61
Output Latch
CLOE CCS2 CCS1 CCS0
PM61
Clock Output Selection Register
Internal Bus
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Port Mode Register 6
Chapter 11 Clock Output Control Circuit
11.3 Clock Output Function Control Registers
The following two types of registers are used to control the clock output function.
• Clock output selection register (CKS)
• Port mode register 6 (PM6)
(1)
Clock output selection register (CKS)
This register sets PCL output clock.
CKS is set with an 1-bit or an 8-bit memory manipulation instruction.
RESET input sets CKS to 00H.
Caution:
When enabling PCL output, set CCS0 to CCS2, then set 1 in CLOE with an 1-bit
memory manipulation instruction.
Figure 11-3:
CKS
Timer Clock Select Register 0 Format
7
6
5
<4>
3
2
1
0
0
0
0
CLOE
0
CCS2
CCS1
CCS0
CCS2
CCS1
CCS0
PCL Output Clock Selection
0
0
0
fX (8 MHz)
0
0
1
fX/21 (4 MHz)
0
1
0
fX/22 (2 MHz)
0
1
1
fX/23 (1 MHz)
1
0
0
fX/24 (500 KHz)
1
0
1
fX/25 (250 KHz)
1
1
0
fX/26 (125 KHz)
1
1
1
fX/27 (62.5 KHz)
Other than above
CLOE
R/W Address
R/W
FF40H
After
Reset
00H
Setting prohibited
PCL Output Control
0
Output disable
1
Output enable
Remarks: 1. fX: Main system clock oscillation frequency
2. Figures in parentheses apply to operation with fX = 8.0 MHz.
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Chapter 11
(2)
Clock Output Control Circuit
Port mode register 6 (PM6)
With this register the port mode PM3 can be set bit-wise.
When using the P61/PCL/SGOA pin for clock output function, set PM61 and output latch of P61
to 0.
PM6 is set with a 1-bit or 8-bit memory manipulation instruction.
RESET input sets PM6 to FFH.
Figure 11-4:
PM6
7
6
5
4
3
2
1
0
0
0
PM65
PM64
PM63
PM62
PM61
PM60
PM6n
180
Port Mode Register 6 Format
PM6n Pin Input/Output Mode Selection
(n = 0 to 5)
0
Output mode (output buffer ON)
1
Input mode (output buffer OFF)
User’s Manual U16504EE1V1UD00
R/W Address
R/W
FF26H
After
Reset
FFH
Chapter 12 A/D Converter
12.1 A/D Converter Functions
The A/D converter is an 8-bit resolution converter that converts analog input voltages into digital values.
It can control up to 5 analog input channels (ANI0 to ANI4).
This A/D converter has the following functions:
(1)
A/D conversion with 8-bit resolution
With the analog input channel specification register (ADS1) one out of 5 analog input channels is
selected. Conversion time and start of sampling is controlled by the A/D converter mode register
(ADM). Each time the conversion has been completed, an interrupt request (INTAD) is generated.
Power-fail detection function
The result of an A/D conversion (value of the ADCR1 register) and the value of PFT register
(PFT: power-fail compare threshold value register) are compared. If the condition for comparison
is satisfied, the INTAD is generated.
Figure 12-1:
ANI0/P10
A/D Converter Block Diagram
Sample & hold circuit
ANI1/P11
ANI2/P12
Successive
approximation
register (SAR)
ANI3/P13
Tap selector
AVDD/AVREF
Voltage comparator
Selector
(2)
AVss
ANI4/P14
Control
circuit
3
ADS12 ADS11ADS10
INTAD
A/D conversion result
register (ADCR1)
ADCS1 FR12 FR11 FR10
Analog input channel
specification register
A/D converter
mode register
Internal bus
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Chapter 12
Figure 12-2:
A/D Converter
Power-Fail Detection Function Block Diagram
PFCM
PFEN
ANI2/P12
ANI3/P13
Comparator
A/D converter
Selector
ANI1/P11
Multiplexer
ANI0/P10
INTAD
Power-fail compare
threshold value
register (PFT)
ANI4/P14
PFEN PFCM
Power-fail compare
mode register (PFM)
Internal bus
12.2 A/D Converter Configuration
A/D converter consists of the following hardware.
Table 12-1:
A/D Converter Configuration
Item
Analog input
Registers
Configuration
5 channels (ANI0 to ANI4)
Successive approximation register (SAR)
A/D conversion result register (ADCR1)
A/D converter mode register (ADM1)
Control registers
Analog input channel specification register (ADS1)
Power-fail compare mode register (PFM)
Power-fail compare threshold value register (PFT)
(1)
Successive approximation register (SAR)
This register compares the analog input voltage value to the voltage tap (compare voltage) value
applied from the series resistor string, and holds the result from the most significant bit (MSB).
When up to the least significant bit (LSB) is set (end of A/D conversion), the SAR contents are
transferred to the A/D conversion result register.
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Chapter 12
(2)
A/D Converter
A/D conversion result register (ADCR1)
This register holds the A/D conversion result. Each time when the A/D conversion ends, the conversion result is loaded from the successive approximation register.
ADCR1 is read with an 8-bit memory manipulation instruction.
RESET input clears ADCR1 to 00H.
Caution:
(3)
If a write operation is executed to the A/D converter mode register (ADM1) and the
analog input channel specification register (ADS1), the contents of ADCR1 are undefined. Read the conversion result before a write operation is executed to ADM1 and
ADS1. If a timing other than the above is used, the correct conversion result may not
be read.
Sample & hold circuit
The sample & hold circuit samples each analog input sequential applied from the input circuit, and
sends it to the voltage comparator. This circuit holds the sampled analog input voltage value during A/D conversion.
(4)
Voltage comparator
The voltage comparator compares the analog input to the series resistor string output voltage.
(5)
Series resistor string
The series resistor string is in AVDD to AVSS, and generates a voltage to be compared to the analog input.
(6)
ANI0 to ANI4 pins
These are five analog input pins to feed analog signals to the A/D converter. ANI0 to ANI4 are
alternate-function pins that can also be used for digital input.
Caution:
(7)
Use ANI0 to ANI4 input voltages within the specified range. If a voltage higher than
AVDD or lower than AVSS is applied (even if within the absolute maximum rating
range), the conversion value of that channel will be undefined and the conversion
values of other channels may also be affected.
AVDD pin (shared with AVREF pin)
This pin supplies the A/D converter reference voltage and is used as the power supply pin of the A/
D-converter.
It converts signals from ANI0 to ANI4 into digital signals according to the voltage applied between
AVDD and AVSS.
Keep the AVDD/AVREF pin always at the same potential as the VDD pin, even when the A/D-converter is not used.
(8)
AVSS pin
This is the GND potential pin of the A/D converter. Always keep it at the same potential as the VSS
pin even when not using the A/D converter.
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Chapter 12
A/D Converter
12.3 A/D Converter Control Registers
The following 4 types of registers are used to control A/D converter.
• A/D converter mode register (ADM1)
• Analog input channel specification register (ADS1)
• Power-fail compare mode register (PFM)
• Power-fail compare threshold value register (PFT)
(1)
A/D converter mode register (ADM1)
This register sets the conversion time for analog input to be A/D converted, conversion start/stop,
and external trigger. ADM1 is set with an 1-bit or an 8-bit memory manipulation instruction.
RESET input clears ADM1 to 00H.
Figure 12-3:
<7>
ADM1 ADCS1
A/D Converter Mode Register (ADM1) Format
6
5
4
3
2
1
0
R/W Address
0
FR12
FR11
FR10
0
0
0
R/W
ADCS1
A/D Conversion Operation Control
0
Stop conversion operation
1
Enable conversion operation
FR12
FR11
FR10
Conversion Time Selection Note
0
0
0
144/fX
0
0
1
120/fX
0
1
0
96/fX
1
0
0
288/fX
1
0
1
240/fX
1
1
0
192/fX
Other than above
Setting prohibited
Note: Set so that the A/D conversion time is 14 µs or more.
Caution:
Bits 0 to 2 and bit 6 must be set to 0.
Remark:
fX: Main system clock oscillation frequency.
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FF98H
After
Reset
00H
Chapter 12
(2)
A/D Converter
Analog input channel specification register (ADS1)
This register specifies the analog voltage input port for A/D conversion.
ADS1 is set with an 8-bit memory manipulation instruction.
RESET input clears ADS1 to 00H.
Figure 12-4:
ADS1
Analog Input Channel Specification Register (ADS1) Format
7
6
5
4
3
2
1
0
0
0
0
0
0
ADS12
ADS11
ADS10
R/W
ADS12
ADS11
ADS10
Analog Input Channel Specification
0
0
0
ANI0
0
0
1
ANI1
0
1
0
ANI2
0
1
1
ANI3
1
0
0
ANI4
Other than above
Caution:
R/W Address
FF99H
After
Reset
00H
Setting prohibited
Bits 3 to 7 must be set to 0.
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(3)
A/D Converter
Power-fail compare mode register (PFM)
The power-fail compare mode register (PFM) controls a comparison operation.
PFM is set with an 1-bit or an 8-bit memory manipulation instruction.
RESET input clears PFM to 00H.
Figure 12-5:
PFM
Power-Fail Compare Mode Register (PFM) Format
7
6
5
4
3
2
1
0
R/W Address
PFEN
PFCM
0
0
0
0
0
0
R/W
PFEN
Disables power-fail comparison (used as normal A/D converter)
1
Enables power-fail comparison (used to detect power failure)
PFCM
1
Caution:
(4)
00H
Enables Power-Fail Comparison
0
0
FF9AH
After
Reset
Power-Fail Compare Mode Selection
ADCR1 ≥ PFT
Generates interrupt request signal INTAD
ADCR1 < PFT
Does not generate interrupt request signal INTAD
ADCR1 ≥ PFT
Does not generate interrupt request signal INTAD
ADCR1 < PFT
Generates interrupt request signal INTAD
Bits 0 to 5 must be set to 0.
Power-fail compare threshold value register (PFT)
The power-fail compare threshold value register (PFT) sets a threshold value against which the
result of A/D conversion is to be compared.
PFT is set with an 8-bit memory manipulation instruction.
RESET input clears PFT to 00H.
Figure 12-6:
PFT
186
Power-fail compare threshold value register (PFT)
7
6
5
4
3
2
1
0
PFT7
PFT6
PFT5
PFT4
PFT3
PFT2
PFT1
PFT0
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R/W Address
R/W
FF9BH
After
Reset
00H
Chapter 12
A/D Converter
12.4 A/D Converter Operations
12.4.1 Basic Operations of A/D Converter
<1> Select one channel for the A/D conversion with the analog input channel specification register
(ADS1).
<2> The voltage input to the selected analog input channel is sampled by the sample & hold circuit.
<3> When sampling has been done for a certain time, the sample & hold circuit is placed in the hold
state and the analog input voltage is held until the A/D conversion operation is complete.
<4> Upon completion of the comparison of 8-bits, the digital result of the A/D conversion resides in
SAR. The result is latched in the A/D conversion result register (ADCR1).
At the same time, the A/D conversion end interrupt request (INTAD) can also be generated.
∗
Caution:
The first A/D conversion value just after starting the A/D conversion (ADCS1=1) is
undefined.
Figure 12-7:
Basic Operation of 8-Bit A/D Converter
Conversion time
Sampling time
A/D converter
operation
SAR
Sampling
Undefined
A/D conversion
80H
C0H
or
40H
Conversion
result
Conversion
result
ADCR1
INTAD
A/D conversion operations are performed continuously until bit 7 (ADCS1) of the A/D converter mode
register (ADM1) is reset (to 0) by software.
If a write operation to the ADM1 and analog input channel specification register (ADS1) is performed
during an A/D conversion operation, the conversion operation is initialized, and if the ADCS1 bit is set
(to 1), conversion starts again from the beginning.
RESET input sets the A/D conversion result register (ADCR1) to 00H.
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A/D Converter
12.4.2 Input voltage and conversion results
The relation between the analog input voltage input to the analog input pins (ANI0 to ANI4) and the A/D
conversion result (stored in the A/D conversion result register (ADCR1)) is given by the following
expression.
ADCR1 = INT (
VIN
AVDD
× 256 + 0.5)
or
(ADCR1 – 0.5) ×
where, INT( )
AVDD
256
- VIN < (ADCR1 + 0.5) ×
AVDD
256
: Function which returns integer part of value in parentheses
VIN
: Analog input voltage
AVDD
: AVDD pin voltage
ADCR1 : A/D conversion result register (ADCR1) value
Figure 12-8, “Relation between Analog Input Voltage and A/D Conversion Result,” on page 189 shows
the relation between the analog input voltage and the A/D conversion result.
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Figure 12-8:
A/D Converter
Relation between Analog Input Voltage and A/D Conversion Result
255
254
253
A/D conversion result
(ADCR1)
3
2
1
0
1
3
2
5
3
1
512 256 512 256 512 256
507 254 509 255 511
512 256 512 256 512
1
Input voltage/AVDD
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A/D Converter
12.4.3 A/D converter operation mode
The operation mode of the A/D converter is the select mode. One analog input channel is selected from
among ANI0 to ANI4 with the analog input channel specification register (ADS1) and A/D conversion is
performed when bit ADCS1 in ADM1 is set to 1.
The following two types of functions can be selected by setting the PFEN flag of the PFM register.
• Normal 8-bit A/D converter (PFEN = 0)
• Power-fail detection function (PFEN = 1)
(1)
A/D conversion (when PFEN = 0)
When bit 7 (ADCS1) of the A/D converter mode register (ADM1) is set to 1 and bit 7 of the powerfail compare mode register (PFM) is set to 0, A/D conversion of the voltage applied to the analog
input pin specified with the analog input channel specification register (ADS1) starts.
Upon the end of the A/D conversion, the conversion result is stored in the A/D conversion result
register (ADCR1), and the interrupt request signal (INTAD) is generated. After one A/D conversion
operation has ended, the next conversion operation is immediately started. A/D conversion operations are repeated until new data is written to ADS1.
If ADS1 is rewritten during A/D conversion operation, the A/D conversion operation under execution is stopped, and A/D conversion of a newly selected analog input channel is started.
If data with ADCS1 set to 0 is written to ADM1 during A/D conversion operation, the A/D conversion operation stops immediately.
(2)
Power-fail detection function (when PFEN = 1)
When bit 7 (ADCS1) of the A/D converter mode register (ADM1) and bit 7 (PFEN) of the power-fail
compare mode register (PFM) are set to 1, A/D conversion of the voltage applied to the analog
input pin specified with the analog input channel specification register (ADS1) starts.
Upon the end of the A/D conversion, the conversion result is stored in the A/D conversion result
register (ADCR1), compared with the value of the power-fail compare threshold value register
(PFT), and INTAD is generated under the condition specified by the PFCM flag of the PFM register.
Caution:
190
When executing power-fail comparison, the interrupt request signal (INTAD) is not
generated on completion of the first conversion after ADCS1 has been set to 1. INTAD
is valid from completion of the second conversion.
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Figure 12-9:
ADM1 rewrite
ADCS1 = 1
A/D conversion
A/D Converter
A/D Conversion
ADS1 rewrite
ANIn
ANIn
ADCS1 = 0
ANIn
ANIm
Conversion suspended;
Conversion results are not stored
ADCR1
ANIn
ANIn
ANIm
Stop
ANIm
INTAD
(PFEN = 0)
INTAD
(PFEN = 1)
First conversion Condition satisfied
Remarks: 1. n = 0, 1, ..., 4
2. m = 0, 1, ..., 4
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12.5 A/D Converter Precautions
(1)
Current consumption in standby mode
A/D converter stops operating in the standby mode. At this time, current consumption can be
reduced (≈ 250 µA @ AVDD = 5 V) by setting bit 7 (ADCS1) of the A/D converter mode register
(ADM1) to 0 in order to stop conversion.
Figure 11-10 shows how to reduce the current consumption in the standby mode.
Figure 12-10:
Example Method of Reducing Current Consumption in Standby Mode
AV DD
AV DD
AV REF
P-ch
AD-Converter
power supply
ADCS1
Series resistor string ( ~ 21 KW)
AVSS
(2)
Input range of ANI0 to ANI4
The input voltages of ANI0 to ANI4 should be within the specification range. In particular, if a
voltage higher than AVDD or lower than AVSS is input (even if within the absolute maximum rating
range), the conversion value of that channel will be undefined and the conversion values of other
channels may also be affected.
(3)
Contending operations
(a) Contention between A/D conversion result register (ADCR1) write and ADCR1 read by
instruction upon the end of conversion
ADCR1 read is given priority. After the read operation, the new conversion result is written to
ADCR1.
(b) Contention between ADCR1 write and A/D converter mode register (ADM1) write or
analog input channel specification register (ADS1) write upon the end of conversion
ADM1 or ADS1 write is given priority. ADCR1 write is not performed, nor is the conversion end
interrupt request signal (INTAD) generated.
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A/D Converter
Noise counter measures
To maintain 8-bit resolution, attention must be paid to noise input to pin AVDD and pins ANI0 to
ANI4. Because the effect increases in proportion to the output impedance of the analog input
source, it is recommended that a capacitor be connected externally as shown in Figure 11-11 to
reduce noise.
Figure 12-11:
Analog Input Pin Handling
If there is a possibility that noise equal to or higher than AVDD or
equal to or lower than AV SS may enter, clamp with a diode with a
small VF value (0.3 V or lower).
Reference
voltage
input
AVDD /AV REF
ANI0 to ANI4
C = 100 to 1000 pF
AVSS
VSS
(5)
ANI0 to ANI4
The analog input pins (ANI0 to ANI4) also function as input port pins (P10 to P14).
When A/D conversion is performed with any of pins ANI0 to ANI4 selected, do not execute a port
input instruction while conversion is in progress, as this may reduce the conversion resolution.
Also, if digital pulses are applied to a pin adjacent to the pin in the process of A/D conversion, the
expected A/D conversion value may not be obtainable due to coupling noise. Therefore, avoid
applying pulses to pins adjacent to the pin undergoing A/D conversion.
(6)
AVDD/AVREF pin input impedance
A series resistor string of approximately 21 kΩ is connected between the AVDD/AVREF pin and the
AVSS pin. Therefore, if the output impedance of the reference voltage is high, this will result in
parallel connection to the series resistor string between the AVDD pin and the AVSS pin, and there
will be a large reference voltage error.
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(7)
A/D Converter
Interrupt request flag (ADIF)
The interrupt request flag (ADIF) is not cleared even if the analog input channel specification register (ADS1) is changed.
Caution is therefore required if a change of analog input pin is performed during A/D conversion.
The A/D conversion result and conversion end interrupt request flag for the pre-change analog
input may be set just before the ADS1 rewrite. If the ADIF is read immediately after the ADS1
rewrite, the ADIF may be set despite the fact that the A/D conversion for the post-change analog
input has not ended.
When the A/D conversion is stopped and then resumed, clear ADIF before the A/D conversion
operation is resumed.
Figure 12-12:
A/D Conversion End Interrupt Request Generation Timing
ADS1 rewrite
(start of ANIn conversion)
A/D conversion
ANIn
ADCR1
ADS1 rewrite
(start of ANIm conversion)
ANIn
ANIn
ADIF is set but ANIm conversion
has not ended.
ANIm
ANIn
ANIm
ANIm
ANIm
INTAD
Remarks: 1. n = 0, 1, ..., 4
2. m = 0, 1, ..., 4
(8)
Read of A/D conversion result register (ADCR1)
When a write operation is executed to A/D converter mode register (ADM1) and analog input
channel specification register (ADS1), the contents of ADCR1 are undefined. Read the conversion
result before write operation is executed to ADM1, ADS1. If a timing other than the above is used,
the correct conversion result may not be read.
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12.6 Cautions on Emulation
To perform debugging with an in-circuit emulator, the D/A converter mode register (DAM0) must be set.
DAM0 is a register used to set the I/O board (IE-78K0-NS-P04).
12.6.1 D/A converter mode register (DAM0)
DAM0 is necessary if the power-fail detection function is used. Unless DAM0 is set, the power-fail
detection function cannot be used. DAM0 is a write-only register.
Because the IE-78K0-NS-P04 uses an external analog comparator and a D/A converter to implement
part of the power-fail detection function, the reference voltage must be controlled.
Therefore, set bit 0 (DACE) of DAM0 to 1 when using the power-fail detection function.
Figure 12-13:
DAM0
D/A Converter Mode Register (DAM0) Format
7
6
5
4
3
2
1
0
0
0
0
0
0
0
0
DACE
DACE
R/W Address
R/W
FF9CH
After
Reset
00H
Reference Voltage Control
0
Disabled
1
Enabled (when power-fail detection function is used)
Cautions: 1. DAM0 is a special register that must be set when debugging is performed with an
In-Circuit Emulator. Even if this register is used, the operation of the µPD780828A
Subseries is not affected. However, delete the instruction that manipulates this
register from the program at the final stage of debugging.
2. Bits 7 to 1 must be set to 0.
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[MEMO]
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13.1 SIO30 Functions
The SIO30 has the following two modes.
• Operation stop mode
• 3-wire serial I/O mode
(1)
Operation stop mode
This mode is used if serial transfer is not performed. For details, see 13.5.1 ”Operation stop
mode” on page 200.
(2)
3-wire serial I/O mode (fixed as MSB first)
This is an 8-bit data transfer mode using three lines: a serial clock line (SCK30), serial output line
(SO30), and serial input line (SI30).
Since simultaneous transmit and receive operations are enabled in 3-wire serial I/O mode, the
processing time for data transfers is reduced.
The first bit in the 8-bit data in serial transfers is fixed as the MSB.
3-wire serial I/O mode is useful for connection to a peripheral I/O device that includes a clock-synchronous serial interface, like a display controller, etc. For details see 13.5.2 ”Three-wire serial
I/O mode” on page 201.
Figure 13-1 shows a block diagram of the SIO30.
Figure 13-1:
Block Diagram of SIO30
Internal bus
8
Direction control circuit
8
Serial I/O shift register
30 (SIO30)
SI30/P37/S24
SO30/P36/S25
Serial clock
counter
Interruption request
signal generator
Serial clock
control circuit
Selector
SCK30/P35/S26
Register CSIM30
CSIE30
MODE31
SCL301
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INTCSI30
fX/22
fX/23
fX/24
SCL300
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Chapter 13 Serial Interface SIO30
13.2 SIO30 Configuration
The SIO30 includes the following hardware.
Table 13-1:
Composition of SIO30
Item
(1)
Configuration
Registers
Serial I/O shift register (SIO30)
Control registers
Serial operation mode register (CSIM30)
Serial I/O shift register (SIO30)
This is an 8-bit register that performs parallel-serial conversion and serial transmit/receive (shift
operations) synchronized with the serial clock.
SIO30 is set by an 8-bit memory manipulation instruction.
When “1” is set to bit 7 (CSIE30) of the serial operation mode register (CSIM30), a serial operation
can be started by writing data to or reading data from SIO30.
When transmitting, data written to SIO30 is output via the serial output (SO30).
When receiving, data is read from the serial input (SI30) and written to SIO30.
The RESET signal resets the register value to 00H.
Caution:
Do not access SIO30 during a transmit operation unless the access is triggered by a
transfer start. (Read is disabled when MODE30 = 0 and write is disabled when
MODE30 = 1.)
13.3 List of SFRs (Special Function Registers)
Table 13-2:
198
List of SFRs (Special Function Registers)
Units available for bit manipulation
1-bit
8-bit
16-bit
Value after
reset
R/W
×
×
-
00H
R/W
-
×
-
00H
SFR name
Symbol
R/W
Serial operation mode register
CSIM30
Serial I/O shift register
SIO30
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Serial Interface SIO30
13.4 Serial Interface Control Register
The SIO30 uses the following type of register for control functions.
• Serial operation mode register (CSIM30)
Serial operation mode register (CSIM30)
This register is used to enable or disable the serial clock, selects operation modes, and defines specific
operations.
CSIM30 can be set via a 1-bit or 8-bit memory manipulation instruction.
The RESET input sets the value to 00H.
Figure 13-2:
<7>
CSIM30 CSIE30
Format of Serial Operation Mode Register (CSIM30)
6
5
4
3
0
0
0
0
2
1
0
R/W Address
MODE30 SCL301 SCL300 R/W
FFA8H
After
Reset
00H
Enable/disable specification for SIO30
CSIE30
Shift register operation
Serial counter
Port Note 1
0
Operation stop
Clear
Port function
1
Operation enable
Count operation enable
Serial operation + port function
MODE30
Transfer operation modes and flags
Operation mode
Transfer start trigger
SO30/P36
0
Transmit/receive mode
Write to SIO30
SO30 output
1
Receive-only mode Note 2
Read from SIO30
Port function
SCL301
SCL300
Clock selection (fX = 8.00 MHz)
0
0
External clock input
0
1
fX/22
1
0
fX/23
1
1
fX/24
Notes: 1. When CSIE30 = 0 (SIO30 operation stop status), the pins connected to SI30 and SO30 can
be used for port functions.
2. When MODE30 = 1 (Receive mode), pin P36 can be used for port function.
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13.5 Serial Interface Operations
This section explains two modes of SIO30.
13.5.1 Operation stop mode
This mode is used if the serial transfers are not performed to reduce power consumption.
During the operation stop mode, the pins can be used as normal I/O ports as well.
Register settings
The operation stop mode can be set via the serial operation mode register (CSIM30).
CSIM30 can be set via 1-bit or 8-bit memory manipulation instructions.
The RESET input sets the value to 00H.
Figure 13-3:
<7>
CSIM30 CSIE30
CSIE30
Format of Serial Operation Mode Register (CSIM30)
6
5
4
3
0
0
0
0
2
1
0
R/W Address
MODE30 SCL301 SCL300 R/W
FFA8H
After
Reset
00H
SIO30 Operation Enable/Disable Specification
Shift register operation
Serial counter
Port
0
Operation stop
Clear
Port functionNote 1
1
Operation enable
Count operation enable
Serial operation + port function
Note: When CSIE30 = 0 (SIO30 operation stop status), the pins SI30, SO30 and SCK30 can be used
for port functions.
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13.5.2 Three-wire serial I/O mode
The three-wire serial I/O mode is useful when connecting a peripheral I/O device that includes a
clock-synchronous serial interface, a display controller, etc.
This mode executes the data transfer via three lines: a serial clock line (SCK30), serial output line
(SO30), and serial input line (SI30).
(1)
Register settings
The 3-wire serial I/O mode is set via serial operation mode register (CSIM30).
CSIM30 can be set via 1-bit or 8-bit memory manipulation instructions.
The RESET input set the value to 00H.
Figure 13-4:
<7>
CSIM30 CSIE30
CSIE30
Format of Serial Operation Mode Register (CSIM30)
6
5
4
3
0
0
0
0
2
1
0
R/W Address
MODE30 SCL301 SCL300 R/W
FFA8H
After
Reset
00H
Enable/disable specification for SIO30
Shift register operation
Serial counter
Port
0
Operation stop
Clear
Port functionNote 1
1
Operation enable
Count operation enable Serial operation + port functionNote 2
Transfer operation modes and flags
MODE30
Operation mode
Transfer start trigger
SO30/P36
0
Transmit/receive mode
Write to SIO30
SO30 output
1
Receive-only mode Note 2
Read from SIO30
Port function
SCL301
SCL300
Clock selection (fX = 8.00 MHz)
0
0
External clock input
0
1
fX/22
1
0
fX/23
1
1
fX/24
Notes: 1. When CSIE30 = 0 (SIO30 operation stop status), the pins SI30, SO30 and SCK30 can be
used for port functions.
2. When CSIE30 = 1 (SIO30 operation enabled status), the SI30 pin can be used as a port pin
if only the send function is used, and the SO30 pin can be used as a port pin if only the
receive-only mode is used.
Caution:
In the 3-wire serial I/O mode, set the port mode register (PM3) as required. Set the
output latch of the port to 0.
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Chapter 13 Serial Interface SIO30
<When SIO30 is used>
Modes
Values
During serial clock output
(master transmission or master reception)
During serial clock input
(slave transmission or slave reception)
Settings
PM35 = 0
Sets P35 (SCK30) to output mode
P35 = 0
Sets output latch of P35 to 0
PM35 = 1
Sets P35 (SCK30) to input mode
PM36 = 0
Sets P36 (SO30) to output mode
P36 = 0
Sets output latch of P36 to 0
PM37 = 1
Sets P37 (SI30) to input mode
Transmit/receive mode
Receive mode
(2)
Communication Operations
In the three-wire serial I/O mode, data is transmitted and received in 8-bit units. Each bit of data is
sent or received synchronized with the serial clock.
The serial I/O shift register (SIO30) is shifted synchronized with the falling edge of the serial clock.
The transmission data is held in the SO30 latch and is transmitted from the SO30 pin. The data is
received via the SI30 pin synchronized with the rising edge of the serial clock is latched to SIO30.
The completion of an 8-bit transfer automatically stops operation of SIO30 and sets a serial transfer completion flag.
Figure 13-5:
SCK30
1
Timing of Three-wire Serial I/O Mode
2
3
4
5
6
7
8
SI30
DI7
DI6
DI5
DI4
DI3
DI2
DI1
DI0
SO30
DO7
DO6
DO5
DO4
DO3
DO2
DO1
DO0
Serial transfer
completion flag
Transfer completion
Transfer starts in synchronized with the serial clock’s falling edge
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(3)
Serial Interface SIO30
Transfer start
A serial transfer starts when the following conditions have been satisfied and transfer data has
been set to serial I/O shift register 30 (SIO30).
• The SIO30 operation control bit must be set (CSIE = 1)
• In Transmit/receive mode
When CSIE30 = 1 and MODE30 = 0, transfer starts when writing to SIO30.
• In Receive-only mode
When CSIE30 = 1 and MODE30 = 1, transfer starts when reading from SIO30.
Caution:
After the data has been written to SIO30, the transfer will not start even if the CSIE30
bit value is set to “1”.
The completion of an 8-bit transfer automatically stops the serial transfer operation and sets a serial
transfer completion flag.
After an 8-bit serial transfer, the internal serial clock is either stopped or is set to high level.
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Chapter 14 Serial Interface SIO31
14.1 SIO31 Functions
The SIO31 has the following three modes.
• Operation stop mode
• 3-wire serial I/O mode
• 2-wire serial I/O mode
(1)
Operation stop mode
This mode is used if serial transfer is not performed. For details, see 14.5.1 ”Operation stop
mode” on page 210.
(2)
3-wire serial I/O mode (fixed as MSB first)
This is an 8-bit data transfer mode using three lines: a serial clock line (SCK31), serial output line
(SO31), and serial input line (SI31).
Since simultaneous transmit and receive operations are enabled in 3-wire serial I/O mode, the
processing time for data transfers is reduced.
The first bit in the 8-bit data in serial transfers is fixed as the MSB.
3-wire serial I/O mode is useful for connection to a peripheral I/O device that includes a clock-synchronous serial interface, like a display controller, etc. For details see 14.5.2 ”Three-wire serial
I/O mode” on page 211.
(3)
2-wire serial I/O mode (fixed as MSB first)
This is an 8-bit data transfer mode using two lines: a serial clock line (SCK31) and a serial data
input/output line (SIO31).
The first bit in the 8-bit data in serial transfers is fixed as the MSB.
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Chapter 14 Serial Interface SIO31
Figure 14-1 shows a block diagram of the SIO31.
Figure 14-1:
Block Diagram of SIO31
Internal bus
8
Direction control circuit
8
Serial I/O shift register
31 (SIO31)
Selector
SI31/P95/S18
SO31/SIO31/P94/S19
Serial clock
counter
Interruption request
signal generator
Serial clock
control circuit
Selector
SCK31/P93/S20
Register CSIM31
206
CSIE31
MODE31
SCL311
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SCL310
INTCSI31
TM50
fX/23
fX/27
Chapter 14
Serial Interface SIO31
14.2 SIO31 Configuration
The SIO31 includes the following hardware.
Table 14-1:
Composition of SIO31
Item
Configuration
Registers
Serial I/O shift register (SIO31)
Control registers
(1)
Serial operation mode register (CSIM31)
Serial mode switch register (SIOSWI)
Serial I/O shift register (SIO31)
This is an 8-bit register that performs parallel-serial conversion and serial transmit/receive (shift
operations) synchronized with the serial clock.
SIO31 is set by an 8-bit memory manipulation instruction.
When “1” is set to bit 7 (CSIE31) of the serial operation mode register (CSIM31), a serial operation
can be started by writing data to or reading data from SIO31.
When transmitting, data written to SIO31 is output via the serial output (SO31).
When receiving, data is read from the serial input (SI31) and written to SIO31.
The RESET signal resets the register value to 00H.
Caution:
Do not access SIO31 during a transmit operation unless the access is triggered by a
transfer start. (Read is disabled when MODE31 = 0 and write is disabled when
MODE31 = 1.)
14.3 List of SFRs (Special Function Registers)
Table 14-2:
List of SFRs (Special Function Registers)
Units available for bit manipulation
1-bit
8-bit
16-bit
Value after
reset
R/W
×
×
-
00H
SIO31
R/W
-
×
-
00H
SIOSWI
R/W
×
×
-
00H
SFR name
Symbol
R/W
Serial operation mode register
CSIM31
Serial I/O shift register
Serial mode switch register
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Chapter 14 Serial Interface SIO31
14.4 Serial Interface Control Register
The SIO31 uses the following type of register for control functions.
• Serial operation mode register (CSIM31)
• Serial mode switch register (SIOSWI)
(1)
Serial operation mode register (CSIM31)
This register is used to enable or disable the serial clock, selects operation modes, and defines
specific operations.
CSIM31 can be set via an 1-bit or an 8-bit memory manipulation instruction.
The RESET input sets the value to 00H.
Figure 14-2:
<7>
CSIM31 CSIE31
Format of Serial Operation Mode Register (CSIM31)
6
5
4
3
0
0
0
0
2
1
0
R/W Address
MODE31 SCL311 SCL310 R/W
FFAAH
After
Reset
00H
Enable/disable specification for SIO31
CSIE31
Shift register operation
Serial counter
Port Note 1
0
Operation stop
Clear
Port function
1
Operation enable
Count operation enable
Serial operation + port function
MODE31
0
1
Transfer operation modes and flags
Operation mode
Transfer start trigger
SO31/SIO31/P94
Transmit/receive mode
Write to SIO31
SO31 output
Read from SIO31
Port function
Receive-only mode
Note 2
SCL311
SCL310
Clock selection (fX = 8.00 MHz)
0
0
External clock input
0
1
TM50
1
0
fX/23
1
1
fX/27
Notes: 1. When CSIE31 = 0 (SIO31 operation stop status), the pins connected to SI31 and SO31 can
be used for port functions.
2. When MODE31 = 1 (Receive mode), pin P94 can be used for port function.
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Chapter 14
(2)
Serial Interface SIO31
Serial mode switch register (SIOSWI)
This register is used to select the SIO31's 3-wire mode or 2-wire mode data communication mode.
SIOSWI is set by an 1-bit or 8-bit memory manipulation instruction.
The RESET input sets SIOSWI to 00H.
Figure 14-3:
SIOSWI
Format of Serial Mode Switch Register (SIOSWI)
7
6
5
4
3
2
1
0
0
0
0
0
0
0
SIOSWI
0
R/W Address
SIOSWI R/W
FFABH
After
Reset
00H
SIO31 - Serial mode switch
0
3-wire mode (reset)
1
2-wire mode
The following operation modes and start trigger have to be set for the usage of the 3-wire mode or
the 2-wire mode data communication mode.
Table 14-3:
MODE31
0
1
0
1
3-wire or 2-wire mode
of SIO31 (SIOSWI)
2-wire mode
3-wire mode
Operating Modes and Start Trigger
Operation Mode Flag
Operation mode
Start trigger
Port 94
Port 93
Transmit/Receive mode SIO31 write
SO31
Port function
Receive mode
SI31
Port function
Transmit/Receive mode SIO31 write
SO31
SI31
Receive mode
Port function
SI31
SIO31 read
SIO31 read
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Chapter 14 Serial Interface SIO31
14.5 Serial Interface Operations
This section explains two modes of SIO31.
14.5.1 Operation stop mode
This mode is used if the serial transfers are not performed to reduce power consumption.
During the operation stop mode, the pins can be used as normal I/O ports as well.
Register settings
The operation stop mode can be set via the serial operation mode register (CSIM31).
CSIM31 can be set via 1-bit or 8-bit memory manipulation instructions.
The RESET input sets the value to 00H.
Figure 14-4:
<7>
CSIM31 CSIE31
CSIE31
Format of Serial Operation Mode Register (CSIM31)
6
5
4
3
0
0
0
0
2
1
0
R/W Address
MODE31 SCL311 SCL310 R/W
FFAAH
After
Reset
00H
SIO31 Operation Enable/Disable Specification
Shift register operation
Serial counter
Port
0
Operation stop
Clear
Port functionNote 1
1
Operation enable
Count operation enable Serial operation + port functionNote 2
Notes: 1. When CSIE31 = 0 (SIO31 operation stop status), the pins SI31, SO31 and SCK31 can be
used for port functions.
2. When CSIE31 = 1 (SIO31 operation enabled status), the SI31 pin can be used as a port pin
if only the send function is used, and the SO31 pin can be used as a port pin if only the
receive-only mode is used.
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Serial Interface SIO31
14.5.2 Three-wire serial I/O mode
The three-wire serial I/O mode is useful when connecting a peripheral I/O device that includes a
clock-synchronous serial interface, a display controller, etc.
This mode executes the data transfer via three lines: a serial clock line (SCK31), serial output line
(SO31), and serial input line (SI31).
(1)
Register settings
The 3-wire serial I/O mode is set via serial operation mode register (CSIM31).
CSIM31 can be set via 1-bit or 8-bit memory manipulation instructions.
The RESET input set the value to 00H.
Figure 14-5:
<7>
CSIM31 CSIE31
CSIE31
Format of Serial Operation Mode Register (CSIM31)
6
5
4
3
0
0
0
0
2
1
0
R/W Address
MODE31 SCL311 SCL310 R/W
FFAAH
After
Reset
00H
Enable/disable specification for SIO31
Shift register operation
Serial counter
Port
0
Operation stop
Clear
Port functionNote 1
1
Operation enable
Count operation enable Serial operation + port functionNote 2
Transfer operation modes and flags
MODE31
Operation mode
Transfer start trigger
SO31 Output
0
Transmit/transmit and receive mode
Write to SIO31
Normal output
1
Receive-only mode
Read from SIO31
Fixed a low level
SCL311
SCL310
Clock selection
0
0
External clock input to SCK31
0
1
TM50
1
0
fX/23
1
1
fX/27
Notes: 1. When CSIE31 = 0 (SIO31 operation stop status), the pins SI31, SO31 and SCK31 can be
used for port functions.
2. When CSIE31 = 1 (SIO31 operation enabled status), the SI31 pin can be used as a port pin
if only the send function is used, and the SO31 pin can be used as a port pin if only the
receive-only mode is used.
Caution:
In the 3-wire serial I/O mode, set the port mode register (PM9) as required. Set the
output latch of the port to 0.
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Chapter 14 Serial Interface SIO31
<When SIO31 is used>
Modes
Values
During serial clock output
(master transmission or master reception)
During serial clock input
(slave transmission or slave reception)
Settings
PM93 = 0
Sets P93 (SCK31) to output mode
P93 = 0
Sets output latch of P95 to 0
PM93 = 1
Sets P93 (SCK31) to input mode
PM94 = 0
Sets P94 (SO31) to output mode
P94 = 0
Sets output latch of P94 to 0
PM93 = 1
Sets P93 (SI31) to input mode
Transmit/receive mode
Receive mode
(2)
Serial mode switch register (SIOSWI)
This register is used to select the SIO31's 3-wire mode or 2-wire mode data communication mode.
SIOSWI is set by an 1-bit or 8-bit memory manipulation instruction.
The RESET input sets SIOSWI to 00H.
Figure 14-6:
SIOSWI
Format of Serial Mode Switch Register (SIOSWI)
7
6
5
4
3
2
1
0
0
0
0
0
0
0
SIOSWI
0
R/W Address
SIOSWI R/W
FFABH
After
Reset
00H
SIO31 - Serial mode switch
0
3-wire mode (reset)
1
2-wire mode
The following operation modes and start trigger have to be set for the usage of the 3-wire mode.
Table 14-4:
MODE31
0
1
212
3-wire or 2-wire mode
of SIO31 (SIOSWI)
3-wire mode
Operating Modes and Start Trigger
Operation Mode Flag
Operation mode
Start trigger
Port 94
Port 93
Transmit/Receive mode SIO31 write
SO31
SI31
Receive mode
Port function
SI31
SIO31 read
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Chapter 14
Serial Interface SIO31
14.5.3 Two-wire serial I/O mode
The 2-wire serial I/O mode is useful when connecting a peripheral I/O device that includes a clock-synchronous serial interface, a display controller, etc.
This mode executes the data transfer via two lines: a serial clock line (SCK31), serial output line
(SO31), and serial input/output line (SIO31).
(1)
Register settings
The 2-wire serial I/O mode is set via serial operation mode register 31 (CSIM31).
CSIM31 can be set by an 1-bit or 8-bit memory manipulation instructions.
The RESET input sets CSIM31 to 00H.
Figure 14-7:
<7
CSIM31 CSIE31
CSIE31
Format of Serial Operation Mode Register (CSIM31)
6
5
4
3
0
0
0
0
2
1
0
R/W Address
MODE31 SCL311 SCL310 R/W
FFAAH
After
Reset
00H
Enable/disable specification for SIO31
Shift register operation
Serial counter
Port
0
Operation stop
Clear
Port functionNote 1
1
Operation enable
Count operation enable
Serial operation + port function
Transfer operation modes and flags
MODE31
Operation mode
Transfer start trigger
SO31 Output
0
Transmit/transmit and receive mode
Write to SIO31
SIO31
1
Receive-only mode
Read from SIO31
SI31
SCL311
SCL310
Clock selection
0
0
External clock input to SCK31
0
1
TM50
1
0
fX/23
1
1
fX/27
Note: When CSIE31 = 0 (SIO31 operation stop status), the pins SI31, SO31 and SCK31 can be used
for port functions.
Caution:
In the 2-wire serial I/O mode, set the port mode register (PM9) as required. Set the
output latch of the port to 0.
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Chapter 14 Serial Interface SIO31
<When SIO31 is used>
Modes
Values
During serial clock output
(master transmission or master reception)
During serial clock input
(slave transmission or slave reception)
Transmit/receive mode
(2)
Settings
PM93 = 0
Sets P93 (SCK31) to output mode
P93 = 0
Sets output latch of P95 to 0
PM93 = 1
Sets P93 (SCK31) to input mode
PM94 = 0
Sets P94 (SO31) to output mode
(Transmit mode)
PM94 = 1
Sets P94 (SIO31) to input mode
(Receive mode)
P94 = 0
Sets output latch of P94 to 0
Serial mode switch register (SIOSWI)
This register is used to select the SIO31's 3-wire mode or 2-wire mode data communication mode.
SIOSWI is set by an 1-bit or 8-bit memory manipulation instruction.
The RESET input sets SIOSWI to 00H.
Figure 14-8:
SIOSWI
Format of Serial Mode Switch Register (SIOSWI)
7
6
5
4
3
2
1
0
0
0
0
0
0
0
SIOSWI
0
R/W Address
SIOSWI R/W
FFABH
After
Reset
00H
SIO31 - Serial mode switch
0
3-wire mode (reset)
1
2-wire mode
The following operation modes and start trigger have to be set for the usage of the 3-wire mode.
Table 14-5:
MODE31
0
1
214
3-wire or 2-wire mode
of SIO31 (SIOSWI)
2-wire mode
Operating Modes and Start Trigger
Operation Mode Flag
Operation mode
Start trigger
Port 94
Port 93
Transmit/Receive mode SIO31 write
SO31
Port function
Receive mode
SI31
Port function
SIO31 read
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Chapter 14
(3)
Serial Interface SIO31
3-wire Communication Operations
In the three-wire serial I/O mode, data is transmitted and received in 8-bit units. Each bit of data is
sent or received synchronized with the serial clock.
The serial I/O shift register (SIO31) is shifted synchronized with the falling edge of the serial clock.
The transmission data is held in the SO31 latch and is transmitted from the SO31 pin. The data is
received via the SI31 pin synchronized with the rising edge of the serial clock is latched to SIO31.
The completion of an 8-bit transfer automatically stops operation of SIO31 and sets a serial transfer completion flag.
Figure 14-9:
SCK31
Timing of Three-wire Serial I/O Mode
1
2
3
4
5
6
7
8
SI31
DI7
DI6
DI5
DI4
DI3
DI2
DI1
DI0
SO31
DO7
DO6
DO5
DO4
DO3
DO2
DO1
DO0
Serial transfer
completion flag
Transfer completion
Transfer starts in synchronized with the serial clock’s falling edge
(4)
2-wire Communication Operations
In the two-wire serial I/O mode, data is transmitted and received in 8-bit units. Each bit of data is sent or
received synchronized with the serial clock.
The serial I/O shift register 31 (SIO31) is shifted synchronized with the falling edge of the serial clock.
The transmission data is held in the SIO31 latch and is transmitted from the SIO31 pin. The data is
received via the SIO31 pin synchronized with the rising edge of the serial clock is latched to SIO31.
The completion of an 8-bit transfer automatically stops operation of SIO31 and sets interrupt request
flag.
Figure 14-10:
SCK31
1
Timing of Two-wire Serial I/O Mode
2
3
4
5
6
7
8
Data input SIO31
DI7
DI6
DI5
DI4
DI3
DI2
DI1
DI0
Data output SIO31
DO7
DO6
DO5
DO4
DO3
DO2
DO1
DO0
Serial transfer
completion flag
Transfer completion
Transfer starts in synchronized with the serial clock’s falling edge
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Chapter 14 Serial Interface SIO31
(5)
Transfer start
A serial transfer starts when the following conditions have been satisfied and transfer data has
been set to serial I/O shift register 31 (SIO31).
• The SIO31 operation control bit must be set (CSIE = 1)
• In Transmit/receive mode
When CSIE31 = 1 and MODE31 = 0, transfer starts when writing to SIO31.
• In Receive-only mode
When CSIE31 = 1 and MODE31 = 1, transfer starts when reading from SIO31.
Caution:
After the data has been written to SIO31, the transfer will not start even if the CSIE31
bit value is set to “1”.
The completion of an 8-bit transfer automatically stops the serial transfer operation and sets a serial
transfer completion flag.
After an 8-bit serial transfer, the internal serial clock is either stopped or is set to high level.
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Chapter 15 Serial Interface Channel UART
15.1 UART Functions
The serial interface UART has the following modes.
(1)
Operation stop mode
This mode is used if the serial transfer is performed to reduce power consumption.
For details, see 16.5.1 Operation Stop Mode.
(2)
Asynchronous serial interface (UART) mode
This mode enables the full-duplex operation where one byte of data is transmitted and received
after the start bit.
The on-chip dedicated UART baud rate generator enables communications using a wide range of
selectable baud rates.
For details, see 16.5.2 Asynchronous Serial Interface (UART) Mode.
Figure 14-1 shows a block diagram of the UART macro.
Figure 15-1:
Block Diagram of UART
Internal bus
ASIM0
Receive
RXB0 buffer
TXE0 RXE0 PS01 PS00 CL0 SL0 ISRM0
RXS0
RXD/P62
Receive
shift
register
ASIS0
PE0 FE0 OVE0
TXS0 Transmit
shift
register
TXD/P63
Receive
control
parity
check
INTSR0
Transmit
control
parity
INTSER0 addition
INTST0
Baud rate
generator
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Chapter 15 Serial Interface Channel UART
15.2 UART Configuration
The UART includes the following hardware.
Table 15-1:
Item
Configuration of UART
Configuration
Transmit shift register 1 (TXS0)
Registers
Receive shift register 1 (RXS0)
Receive buffer register (RXB0)
Asynchronous serial interface mode register (ASIM0)
Control registers
Asynchronous serial interface status register (ASIS0)
Baud rate generator control register (BRGC0)
(1)
Transmit shift register 1 (TXS0)
This register is for setting the transmit data. The data is written to TXS0 for transmission as serial
data.
When the data length is set as 7 bits, bits 0 to 6 of the data written to TXS0 are transmitted as
serial data. Writing data to TXS0 starts the transmit operation.
TXS0 can be written via 8-bit memory manipulation instructions. It cannot be read.
When RESET is input, its value is FFH.
Cautions: 1. Do not write to TXS0 during a transmit operation.
2. The same address is assigned to TXS0 and the receive buffer register (RXB0).
A read operation reads values from RXB0.
(2)
Receive shift register 1 (RXS0)
This register converts serial data input via the RXD pin to parallel data. When one byte of the data
is received at this register, the receive data is transferred to the receive buffer register (RXB0).
RXS0 cannot be manipulated directly by a program.
(3)
Receive buffer register (RXB0)
This register is used to hold receive data. When one byte of data is received, one byte of new
receive data is transferred from the receive shift register (RXS0).
When the data length is set as 7 bits, receive data is sent to bits 0 to 6 of RXB0. The MSB must be
set to “0” in RXB0.
RXB0 can be read to via 8-bit memory manipulation instructions. It cannot be written to.
When RESET is input, its value is FFH.
Caution:
218
The same address is assigned to RXB0 and the transmit shift register (TXS0). During
a write operation, values are written to TXS0.
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Chapter 15
(4)
Serial Interface Channel UART
Transmission control circuit
The transmission control circuit controls transmit operations, such as adding a start bit, parity bit,
and stop bit to data that is written to the transmit shift register (TXS0), based on the values set to
the asynchronous serial interface mode register (ASIM0).
(5)
Reception control circuit
The reception control circuit controls the receive operations based on the values set to the asynchronous serial interface mode register (ASIM0). During a receive operation, it performs error
checking, such as parity errors, and sets various values to the asynchronous serial interface status register (ASIS0) according to the type of error that is detected.
15.3 List of SFRS (Special Function Registers)
Table 15-2:
List of SFRs (Special Function Registers)
SFR name
Symbol
R/W
Units available for bit manipulation
1-bit
8-bit
16-bit
Value
when
reset
-
×
-
FFH
Transmit shift register
TXS0
W
Receive buffer register
RXB0
R
Asynchronous serial interface mode register
ASIM0
R/W
×
×
-
R
-
×
-
R/W
-
×
-
Asynchronous serial interface status register ASIS0
Baud rate generator control register
BRGC0
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Chapter 15 Serial Interface Channel UART
15.4 Serial Interface Control Registers
The UART uses the following three types of registers for control functions.
• Asynchronous serial interface mode register (ASIM0)
• Asynchronous serial interface status register (ASIS0)
• Baud rate generator control register (BRGC0)
(1)
Asynchronous serial interface mode register (ASIM0)
This is an 8-bit register that controls the UART serial transfer operation.
ASIM0 can be set by 1-bit or 8-bit memory manipulation instructions.
RESET input sets the value to 00H.
Figure 14-2 shows the format of ASIM0.
Figure 15-2:
ASIM0
Format of Asynchronous Serial Interface Mode Register (ASIM0) (1/2)
<7>
<6>
5
4
3
2
1
0
R/W Address
TXE0
RXE0
PS01
PS00
CL0
SL0
ISRM0
0
R/W
220
FFA0H
TXE0
RXE0
0
0
Operation stop
Port function
Port function
0
1
UART0 mode
(receive only)
Serial operation
Port function
1
0
UART0 mode
(transmit only)
Port function
Serial operation
1
1
UART0 mode
(transmit and receive)
Serial operation
Serial operation
PS01
PS00
0
0
No parity
0
1
Zero parity always added during transmission
No parity detection during reception (parity errors do not occur)
1
0
Odd parity
1
1
Even parity
CL0
Operation mode
RXD0/P62 pin function TXD0/P63 pin function
Parity bit specification
Character length specification
0
7 bits
1
8 bits
After
Reset
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Chapter 15
Figure 15-2:
Format of Asynchronous Serial Interface Mode Register (ASIM0) (2/2)
SL0
Caution:
Stop bit length specification for transmit data
0
1 bit
1
2 bits
ISRM0
Serial Interface Channel UART
Receive completion interrupt control when error occurs
0
Receive completion interrupt is issued when an error occurs
1
Receive completion interrupt is not issued when an error occurs
Do not switch the operation mode until the current serial transmit/receive operation
has stopped.
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Chapter 15 Serial Interface Channel UART
(2)
Asynchronous serial interface status register (ASIS0)
When a receive error occurs during UART mode, this register indicates the type of error.
ASIS0 can be read using an 8-bit memory manipulation instruction.
When RESET is input, its value is 00H.
Figure 15-3:
ASIS0
Format of Asynchronous Serial Interface Status Register (ASIS0)
7
6
5
4
3
2
1
0
0
0
0
0
0
PE0
FE0
OVE0
PE0
R/W Address
R
FFA1H
After
Reset
00H
Parity error flag
0
No parity error
1
Parity error
(Incorrect parity bit detected)
FE0
Framing error flag
0
No framing error
1
Framing errorNote 1
(Stop bit not detected)
FE0
Overrun error flag
0
No overrun error
1
Overrun errorNote 2
(Next receive operation was completed before data was read from receive buffer register)
Notes: 1. Even if a stop bit length of two bits has been set to bit 2 (SL0) in the asynchronous serial
interface mode register (ASIM0), the stop bit detection during a receive operation only
applies to a stop bit length of 1 bit.
2. Be sure to read the contents of the receive buffer register (RXB0) when an overrun error
has occurred.
Until the contents of RXB0 are read, further overrun errors will occur when receiving data.
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Serial Interface Channel UART
Baud rate generator control register (BRGC0)
This register sets the serial clock for UART.
BRGC0 can be set via an 8-bit memory manipulation instruction.
When RESET is input, its value is 00H.
Figure 14-4 shows the format of BRGC0.
Figure 15-4:
BRGC0
Format of Baud Rate Generator Control Register (BRGC0) (1/2)
7
6
5
4
3
2
1
0
0
TPS02
TPS01
TPS00
MDL03
MDL02
MDL01
MDL00
R/W Address
R/W
FFA2H
After
Reset
00H
(fX = 8.00 MHz)
TPS02
TPS01
TPS00
Source clock selection for 5-bit counter
n
1
1
0
0
0
fX/2
0
0
1
fX/22
2
0
1
0
fX/23
3
0
1
1
fX/24
4
5
1
0
0
fX/25
1
0
1
fX/26
6
1
1
0
fX/27
7
1
fX/28
8
1
1
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Chapter 15 Serial Interface Channel UART
Figure 15-4:
Format of Baud Rate Generator Control Register (BRGC0) (2/2)
MDL03
MDL02
MDL01
MDL00
Input clock selection for baud rate generator
k
0
0
0
0
fSCK/16
0
0
0
0
1
fSCK/17
1
0
0
1
0
fSCK/18
2
0
0
1
1
fSCK/19
3
0
1
0
0
fSCK/20
4
0
1
0
1
fSCK/21
5
0
1
1
0
fSCK/22
6
0
1
1
1
fSCK/23
7
1
0
0
0
fSCK/24
8
1
0
0
1
fSCK/25
9
1
0
1
0
fSCK/26
10
1
0
1
1
fSCK/27
11
1
1
0
0
fSCK/28
12
1
1
0
1
fSCK/29
13
1
1
1
0
fSCK/30
14
1
1
1
1
Setting prohibited
-
Caution:
Writing to BRGC0 during a communication operation may cause abnormal output
from the baud rate generator and disable further communication operations. Therefore, do not write to BRGC0 during a communication operation.
Remarks: 1. fSCK: Source clock for 5-bit counter
2. n: Value set via TPS00 to TPS02 (1 ≤ n ≤ 8)
3. k: Value set via MDL00 to MDL03 (0 ≤ k ≤ 14)
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Serial Interface Channel UART
15.5 Serial Interface Operations
This section explains the different modes of the UART.
15.5.1 Operation stop mode
This mode is used when serial transfer is performed to reduce power consumption.
In the operation stop mode, pins can be used as ordinary ports.
Register settings
Operation stop mode settings are made via the asynchronous serial interface mode register (ASIM0).
TXE0 and RXE0 must be set to 0.
Figure 15-5:
ASIM0
Register Settings
<7>
<6>
5
4
3
2
1
0
R/W Address
TXE0
RXE0
PS01
PS00
CL0
SL0
ISRM0
0
R/W
FFA0H
TXE0
RXE0
0
0
Operation stop
Port function
Port function
0
1
UART0 mode
(receive only)
Serial operation
Port function
1
0
UART0 mode
(transmit only)
Port function
Serial operation
1
1
UART0 mode
(transmit and receive)
Serial operation
Serial operation
Caution:
Operation mode
After
Reset
00H
RXD0/P62 pin function TXD0/P63 pin function
Do not switch the operation mode until the current serial transmit/receive operation
has stopped.
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Chapter 15 Serial Interface Channel UART
15.5.2 Asynchronous serial interface (UART) mode
This mode enables full-duplex operation where one byte of the data is transmitted or received after the
start bit.
The on-chip dedicated UART baud rate generator enables communications by using a wide range of
selectable baud rates.
(1)
Register settings
The UART mode settings are made via the asynchronous serial interface mode register (ASIM0),
asynchronous serial interface status register (ASIS0), and the baud rate generator control register
(BRGC0).
(a) Asynchronous serial interface mode register (ASIM0)
ASIM0 can be set by 1-bit or 8-bit memory manipulation instructions.
When RESET is input, its value is 00H.
Figure 15-6:
ASIM0
Format of Asynchronous Serial Interface Mode Register (ASIM0) (1/2)
<7>
<6>
5
4
3
2
1
0
R/W Address
TXE0
RXE0
PS01
PS00
CL0
SL0
ISRM0
0
R/W
226
FFA0H
TXE0
RXE0
0
0
Operation stop
Port function
Port function
0
1
UART0 mode
(receive only)
Serial operation
Port function
1
0
UART0 mode
(transmit only)
Port function
Serial operation
1
1
UART0 mode
(transmit and receive)
Serial operation
Serial operation
PS01
PS00
0
0
No parity
0
1
Zero parity always added during transmission
No parity detection during reception (parity errors do not occur)
1
0
Odd parity
1
1
Even parity
CL0
Operation mode
RXD0/P62 pin function TXD0/P63 pin function
Parity bit specification
Character length specification
0
7 bits
1
8 bits
After
Reset
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Chapter 15
Figure 15-6:
Format of Asynchronous Serial Interface Mode Register (ASIM0) (2/2)
SL0
Caution:
Stop bit length specification for transmit data
0
1 bit
1
2 bits
ISRM0
Serial Interface Channel UART
Receive completion interrupt control when error occurs
0
Receive completion interrupt is issued when an error occurs
1
Receive completion interrupt is not issued when an error occurs
Do not switch the operation mode until the current serial transmit/receive operation
has stopped.
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Chapter 15 Serial Interface Channel UART
(b) Asynchronous serial interface status register (ASIS0)
ASIS0 can be read using an 8-bit memory manipulation instruction.
When RESET is input, its value is 00H.
Figure 15-7:
ASIS0
Format of Asynchronous Serial Interface Status Register (ASIS0)
7
6
5
4
3
2
1
0
0
0
0
0
0
PE0
FE0
OVE0
PE0
R/W Address
R
FFA1H
After
Reset
00H
Parity error flag
0
No parity error
1
Parity error
(Incorrect parity bit detected)
FE0
Framing error flag
0
No framing error
1
Framing errorNote 1
(Stop bit not detected)
OVE0
Overrun error flag
0
No overrun error
1
Overrun errorNote 2
(Next receive operation was completed before data was read from receive buffer register)
Notes: 1. Even if a stop bit length of two bits has been set to bit 2 (SL0) in the asynchronous serial
interface mode register (ASIM0), the stop bit detection during a receive operation only
applies to a stop bit length of 1 bit.
2. Be sure to read the contents of the receive buffer register (RXB0) when an overrun error
has occurred.
Until the contents of RXB0 are read, further overrun errors will occur when receiving data.
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Serial Interface Channel UART
(c) Baud rate generator control register (BRGC0)
BRGC0 can be set via an 8-bit memory manipulation instruction.
When RESET is input, its value is 00H.
Figure 15-8:
BRGC0
Format of Baud Rate Generator Control Register (BRGC0) (1/2)
7
6
5
4
3
2
1
0
0
TPS02
TPS01
TPS00
MDL03
MDL02
MDL01
MDL00
R/W Address
R/W
FFA2H
After
Reset
00H
(fX = 8.00 MHz)
TPS02
TPS01
TPS00
Source clock selection for 5-bit counter
n
1
0
0
0
fX/21
0
0
1
fX/22
2
3
0
1
0
fX/23
0
1
1
fX/24
4
1
0
0
fX/25
5
6
1
0
1
fX/26
1
1
0
fX/27
7
1
1
1
fX/28
8
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Chapter 15 Serial Interface Channel UART
Figure 15-8:
Format of Baud Rate Generator Control Register (BRGC0) (2/2)
MDL03
MDL02
MDL01
MDL00
Input clock selection for baud rate generator
k
0
0
0
0
fSCK/16
0
0
0
0
1
fSCK/17
1
0
0
1
0
fSCK/18
2
0
0
1
1
fSCK/19
3
0
1
0
0
fSCK/20
4
0
1
0
1
fSCK/21
5
0
1
1
0
fSCK/22
6
0
1
1
1
fSCK/23
7
1
0
0
0
fSCK/24
8
1
0
0
1
fSCK/25
9
1
0
1
0
fSCK/26
10
1
0
1
1
fSCK/27
11
1
1
0
0
fSCK/28
12
1
1
0
1
fSCK/29
13
1
1
1
0
fSCK/30
14
1
1
1
1
Setting prohibited
-
Caution:
Writing to BRGC0 during a communication operation may cause abnormal output
from the baud rate generator and disable further communication operations. Therefore, do not write to BRGC0 during a communication operation.
Remarks: 1. fSCK: Source clock for 5-bit counter
2. n: Value set via TPS00 to TPS02 (1 ≤ n ≤ 8)
3. k: Value set via MDL00 to MDL03 (0 ≤ k ≤ 14)
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Serial Interface Channel UART
The transmit/receive clock that is used to generate the baud rate is obtained by dividing the main
system clock.
• Baud rate setting
The main system clock is divided to generate the transmit/receive clock. The baud rate generated
by the main system clock is determined according to the following formula.
fX
[Baud rate] =
2n+1(k + 16)
[kbps]
fX : Oscillation frequency of main system clock in MHz
n : Value set via TPS00 to TPS02 (1 ≤ n ≤ 8)
For details, see Table 15-3.
k : Value set via MDL00 to MDL02 (0 ≤ k ≤ 14) in register BRGC0
The relation between the 5-bit counter’s source clock assigned to bits 4 to 6 (TPS00 to TPS02) of
BRGC0 and the “n” value in the above formula is shown in Figure 15-4, “Format of Baud Rate
Generator Control Register (BRGC0) (1/2),” on page 223.
Table 15-3:
TPS02
Remark:
TPS01
Relation between 5-bit Counter’s Source Clock and “n” Value
TPS00
Source clock selection for 5-bit counter
n
1
0
0
0
fX/21
0
0
1
fX/22
2
0
1
0
fX/23
3
0
1
1
fX/24
4
1
0
0
fX/25
5
1
0
1
fX/26
6
1
1
0
fX/27
7
1
1
1
fX/28
8
fX: Oscillation frequency of main system clock.
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Chapter 15 Serial Interface Channel UART
• Error tolerance range for baud rates
The tolerance range for baud rates depends on the number of bits per frame and the counter’s
division rate [1/(16 + k)].
Table 15-4 describes the relation between the main system clock and the baud rate and
Figure 14-9 shows an example of a baud rate error tolerance range.
Table 15-4:
Baud rate
(bps)
Relation between Main System Clock and Baud Rate
fX = 8.386 MHz
fX = 8.000 MHz
fX = 5.000 MHz
fX = 4.1943 MHz
BRGCO
ERR (%)
BRGCO
ERR (%)
BRGCO
ERR (%)
BRGCO
ERR (%)
600
7BH
1.10
7AH
0.16
70H
1.73
6BH
1.14
1200
6BH
1.10
6AH
0.16
60H
1.73
5BH
1.14
2400
5BH
1.10
5AH
0.16
50H
1.73
4BH
1.14
4800
4BH
1.10
4AH
0.16
40H
1.73
3BH
1.14
9600
3BH
1.10
3AH
0.16
30H
1.73
2BH
1.14
19200
2BH
-1.3
2AH
0.16
20H
1.73
1BH
1.14
31250
21H
1.10
20H
0
14H
0
11H
-1.31
38400
1BH
1.10
1AH
0.16
10H
1.73
0BH
1.14
76800
0BH
1.10
0AH
0.16
00H
1.73
-
-
115200
02H
1.03
01H
0.16
-
-
-
-
Remarks: 1. fX: Oscillation frequency of main system clock
2. n: Value set via TPS00 to TPS02 (1 ≤ n ≤ 8)
3. k: Value set via MDL00 to MDL03 (0 ≤ k ≤ 14)
Figure 15-9:
Error Tolerance (when k = 0), including Sampling Errors
Ideal
sampling
point
32T
64T
256T
288T
320T
304T
Basic timing
(clock cycle T)
High-speed clock
(clock cycle T’)
enabling normal
reception
Low-speed clock
(clock cycle T”)
enabling normal
reception
Remark:
START
D0
D7
336T
P
STOP
15.5T
START
D0
30.45T
D7
P
60.9T
STOP
Sampling error
0.5T
304.5T
15.5T
START
D0
33.55T
D7
67.1T
P
301.95T
STOP
335.5T
T: 5-bit counter’s source clock cycle
Baud rate error tolerance (when k = 0) =
±15.5 × 100
= 4.8438 (%)
320
232
352T
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Chapter 15
(2)
Serial Interface Channel UART
Communication operations
(a) Data format
As shown in Figure 15-10, the format of the transmit/receive data consists of a start bit, character
bits, a parity bit, and one or more stop bits.
The asynchronous serial interface mode register (ASIM0) is used to set the character bit length,
parity selection, and stop bit length within each data frame.
Figure 15-10:
Format of Transmit/Receive Data in Asynchronous Serial Interface
1 data frame
Start
bit
D0
D1
D2
D3
D4
D5
D6
D7
Parity
bit
Stop bit
•
Start bit.............
1 bit
•
Character bits...
7 bits or 8 bits
•
Parity bit...........
Even parity, odd parity, zero parity, or no parity
•
Stop bit(s)........
1 bit or 2 bits
When “7 bits” is selected as the number of character bits, only the low-order 7 bits (bits 0 to 6) are
valid. In this case during a transmission the highest bit (bit 7) is ignored and during reception the
highest bit (bit 7) must be set to “0”.
The asynchronous serial interface mode register (ASIM0) and the baud rate generator control
register (BRGC0) are used to set the serial transfer rate.
If a receive error occurs, information about the receive error can be recognized by reading the
asynchronous serial interface status register (ASIS0).
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Chapter 15 Serial Interface Channel UART
(b) Parity types and operations
The parity bit is used to detect bit errors in transfer data. Usually, the same type of parity bit is
used by the transmitting and receiving sides. When odd parity or even parity is set, errors in the
parity bit (the odd-number bit) can be detected. When zero parity or no parity is set, errors are not
detected.
• Even parity
• During transmission
The number of bits in transmit data that includes a parity bit is controlled so that there are an
even number of “1” bits. The value of the parity bit is as follows.
If the transmit data contains an odd number of “1” bits: the parity bit value is “1”.
If the transmit data contains an even number of “1” bits: the parity bit value is “0”
• During reception
The number of “1” bits is counted among the transfer data that include a parity bit, and a parity
error occurs when the result is an odd number.
• Odd parity
• During transmission
The number of bits in transmit data that includes a parity bit is controlled so that there is an odd
number of “1” bits. The value of the parity bit is as follows.
If the transmit data contains an odd number of “1” bits: the parity bit value is “0”
If the transmit data contains an even number of “1” bits: the parity bit value is “1”
• During reception
The number of “1” bits is counted among the transfer data that include a parity bit, and a parity
error occurs when the result is an even number.
• Zero parity
During transmission, the parity bit is set to “0” regardless of the transmit data.
During reception, the parity bit is not checked. Therefore, no parity errors will occur regardless of
whether the parity bit is a “0” or a “1”.
• No parity
No parity bit is added to the transmit data.
During reception, receive data is regarded as having no parity bit. Since there is no parity bit, no
parity errors will occur.
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Serial Interface Channel UART
(c) Transmission
The transmit operation is started when transmit data is written to the transmit shift register (TXS0).
A start bit, parity bit, and stop bit(s) are automatically added to the data.
Starting the transmit operation shifts out the data in TXS0, thereby emptying TXS0, after which a
transmit completion interrupt (INTST0) is issued.
The timing of the transmit completion interrupt is shown in Figure 15-11.
Figure 15-11:
Timing of Asynchronous Serial Interface Transmit Completion Interrupt
(1) Stop bit length: 1 bit
TXD (output)
START
D0
D1
D2
D6
D7
Parity
D7
Parity
STOP
INTST0
(2) Stop bit length: 2 bits
TXD (output)
START
D0
D1
D2
D6
STOP
INTST0
Caution:
Do not write to the asynchronous serial interface mode register (ASIM0) during a
transmit operation. Writing to ASIM0 during a transmit operation may disable further
transmit operations (in such cases, enter a RESET to restore normal operation).
Whether or not a transmit operation is in progress can be determined via software
using the transmit completion interrupt (INTST0) or the interrupt request flag (STIF)
that is set by INTST0.
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Chapter 15 Serial Interface Channel UART
(d) Reception
The receive operation is enabled when bit 6 (RXE0) of the asynchronous serial interface mode
register (ASIM0) is set to "1", and input data via RXD pin is sampled.
The serial clock specified by ASIM0 is used when sampling the RXD pin.
When the RXD pin goes low, the 5-bit counter begins counting, the start timing signal for data
sampling is output if half of the specified baud rate time has elapsed. If the sampling of the RXD0
pin input of this start timing signal yields a low-level result, a start bit is recognized, after which the
5-bit counter is initialized and starts counting and data sampling begins. After the start bit is recognized, the character data, parity bit, and one-bit stop bit are detected, at which point reception of
one data frame is completed.
Once the reception of one data frame is completed, the receive data in the shift register is transferred to the receive buffer register (RXB0) and a receive completion interrupt (INTSR0) occurs.
Even if an error has occurred, the receive data in which the error occurred is still transferred to
RXB0 and INTSR0 occurs (see Figure 14-9).
If the RXE0 bit is reset (to “0”) during a receive operation, the receive operation is stopped immediately. At this time, neither the contents of RXB0 and ASIS0 will change, nor does INTSR0 or
INTSER0 occur.
Figure 15-12 shows the timing of the asynchronous serial interface receive completion interrupt.
Figure 15-12:
RXD (input)
Timing of Asynchronous Serial Interface Receive Completion Interrupt
START
D0
D1
D2
D6
D7
Parity
STOP
INTSR0
Caution:
236
Be sure to read the contents of the receive buffer register (RXB0) even when a
receive error has occurred. Overrun errors will occur during the next data receive
operations and the receive error status will remain until the contents of RXB0 are
read.
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Chapter 15
Serial Interface Channel UART
(e) Receive errors
Three types of errors can occur during a receive operation: parity error, framing error, or overrun
error. If, as the result of the data reception, an error flag is set to the asynchronous serial interface
status register (ASIS0), a receive error interrupt (INTSER0) will occur. Receive error interrupts are
generated before receive interrupts (INTSR0).
Table 15-5 lists the causes of receive errors.
As part of the receive error interrupt (INTSER0) servicing, the contents of ASIS0 can be read to
determine which type of error occurred during the receive operation (see Table 14-5 and Figure
15-13).
The content of ASIS0 is reset (to “0”) if the receive buffer register (RXB0) is read or when the next
data is received (if the next data contains an error, another error flag will be set).
Table 15-5:
Causes of Receive Errors
Receive error
Parity error
ASIS0
value
Cause
Parity specified during transmission does not match parity of receive data
04H
Framing error Stop bit was not detected
Overrun error
02H
Reception of the next data was completed before data was read from the receive buffer
register
Figure 15-13:
RXD0 (input)
START
D0
01H
Receive Error Timing
D1
D2
D6
D7
Parity
STOP
INTSR0
INTSER0
INTSER0
(When parity error occurs)
Cautions: 1. The contents of ASIS0 are reset (to “0”) when the receive buffer register (RXB0) is
read or when the next data is received. To obtain information about the error, be
sure to read the contents of ASIS0 before reading RXB0.
2. Be sure to read the contents of the receive buffer register (RXB0) even when a
receive error has occurred. Overrun errors will occur during the next data receive
operations and the receive error status will remain until the contents of RXB0 are
read.
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Chapter 15 Serial Interface Channel UART
15.6 Behavior of UART during Standby of the Controller
Serial transfer operations can be performed during HALT mode of the controller.
During STOP mode, serial transfer operations are stopped and the values in the asynchronous serial
interface mode register (ASIM0), the transmit shift register (TXS0), the receive shift register (RXS0),
and the receive buffer register (RXB0) remain as they were just before the clock was stopped.
Output from the TXD pin retains the current data if the clock is stopped (if the system enters STOP
mode) during a transmit operation. If the clock is stopped during a receive operation, the data received
before the clock was stopped is retained and all subsequent operations are stopped. The receive
operation can be restarted once the clock is restarted.
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Chapter 16 CAN Controller
Table 16-1:
Outline of the Function
Feature
Details
Protocol
CAN2.0 with active extended frame capability
(Bosch specification 2.0 part B)
Baudrate
Max. 500 Kbps at 8 MHz clock supply
Bus line control
CMOS in / out for external transceiver
Clock
Selected by register
Data storage
CPU RAM area with shared access
DCAN uses up to 288 byte of RAM
Unused bytes can be used by CPU for other tasks
Message organisation
Received messages will be stored in RAM area
depending on message identifier
Transmit messages have two dedicated buffers in RAM area
Message number
One input receive shadow buffer (not readable by user)
Up to 16 receive message objects including 2 masks
Two transmit channels
Message sorting
Unique identifier on all 16 receive message objects
Up to 2 message objects with mask
Global mask for all messages
DCAN protocol
SFR access for general control
Interrupt
Transmit interrupt for each channel
One receive interrupt with enable control for each message
One error interrupt
Time functions
Support of time stamp and global time system
Programmable single shot mode
Diagnostic
Readable error counters
“Valid protocol activity flag” for verification of bus connection
“Receive only” mode for automatic baudrate detection
Power down modes
Sleep mode: Wake up from CAN bus
Stop mode: No wake-up from CAN bus
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Chapter 16
CAN Controller
16.1 CAN Protocol
CAN is an abbreviation of "Controller Area Network", and is a class C high speed multiplexed communication protocol. CAN is specified by Bosch in the CAN specification 2.0 from September 1991 and is
standardized in ISO-11898 (International Organization for Standardization) and SAE (Society of Automotive Engineers).
16.1.1 Protocol Mode Function
(1)
Standard format mode
• This mode supports an 11-bit message identifier thus making it possible to differentiate
between 2048 types of messages.
(2)
Extended format mode
• In the extended format mode, the identifier has 29 bits. It is built by the standard identifier
(11 bits) and an extended identifier (18 bits).
• When the IDE bits of the arbitration field is "recessive", the frame is sent in the extended format
mode.
• When a message in extended format mode and a remote frame in standard format mode are
simultaneously transmitted, the node transmitting the message with the standard mode wins
the arbitration.
(3)
Bus values
• The bus can have one of two complementary logical values: "dominant" or "recessive". During
simultaneous transmission of "dominant" and "recessive" bits, the resulting bus value will be
"dominant" (non destructive arbitration).
• For example, in case of a wired-AND implementation of the bus, the "dominant" level would be
represented by a logical "0" and the "recessive" level by a logical “1”.
This specific representation is used in this manual.
• Physical states (e.g. electrical voltage, light) that represent the logical levels are not given in this
document.
16.1.2 Message Format
The CAN protocol message supports different types of frames. The types of frames are listed below:
240
• Data frame:
Carries the data from a transmitter to the receiver.
• Remote frame:
Transmission demand frame from the requesting node.
• Error frame:
Frame sent on error detection.
• Overload frame:
Frame sent when a data or remote frame would be overwritten by the next
one before the receiving node could process it. The reception side did not
finish its operations on the reception of the previously received frame yet.
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Chapter 16 CAN Controller
16.1.3 Data Frame / Remote Frame
Figure 16-1:
R
D
1
‰
(
)

(11 + 1)
(29 + 3)
‚
Data Frame
Data frame
0 ... 64
6
ƒ
„
16
…
2
7
3
† ‡ ˆ ‰
) (
(
)
Bus idle
Interframe space
End of frame
ACK field
CRC field
Data field
Control field
Arbitration field
Start of frame
Figure 16-2:
Remote Frame
Remote frame
R
D
‰
(
)

‚
ƒ
…
† ‡ ˆ ‰
(
) (
)
Bus idle
Interframe space
End of frame
ACK field
CRC field
Control field
Arbitration field
Start of frame
Remark:
This frame is transmitted when the reception node requests transmission. Data field is not
transmitted even if the data length code ≠ '0' in the control field.
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16.1.4 Description of each field
(1)
"R" indicates recessive level. "D" indicates dominant level.
Start of frame: The start of data frame and remote frame are indicated.
Figure 16-3:
Interframe space
on bus idle
Data Frame
Start of frame
Arbitration field
R
D
1 bit
• The start of frame (SOF) is denoted by the falling edge of the bus signal.
• Reception continues when 'Dominant level' is detected at the sample point.
• The bus becomes idle state when 'Recessive level' is detected at a sample point.
(2)
Arbitration field: Sets priority, specifies data frame or remote frame, and defines the protocol
mode.
Figure 16-4:
Arbitration Field/Standard Format Mode
Arbitration field
Control field
R
D
Identifier
ID28 . . . ID18
(11 bits)
242
RTR IDE r0
(1 bit) (1 bit)
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Figure 16-5:
Arbitration Field/Extended Format Mode
Arbitration field
Control field
R
D
Identifier
ID28 . . . ID18
(11 bits)
SRR IDE
(1 bit) (1 bit)
Identifier
ID17 . . . ID0
(18 bits)
RTR r1
(1 bit)
r0
• ID28 - ID0 is the identifier.
• The identifier is transmitted with MSB at first position.
• Substitute Remote Request (SRR) is only used in extended format mode and is always
recessive.
Table 16-2:
Bit Number of the Identifier
Protocol Mode Identifier
Number
Standard format mode
11 bits
Extended format mode
29 bits
Table 16-3:
Frame Type
RTR Setting
RTR Bit
Data frame
0
Remote frame
1
Table 16-4:
Protocol Mode
Mode Setting
IDE Bit
Standard format mode
0
Extended format mode
1
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CAN Controller
Control field: The data byte number DLC in the data field specifies the number of data bytes in the
current frame (DLC=0 to 8).
Figure 16-6:
Control Field (Standard Format Mode)
Arbitration field
Data field
Control field
R
D
r0
RTR IDE
Figure 16-7:
DLC3 DLC2DLC1DLC0
Control Field (Extended Format Mode)
Arbitration field
Data field
Control field
R
D
RTR
r0
r1
DLC3 DLC2DLC1DLC0
• The bits r0 and r1 are reserved bits for future use and are recommended to be recessive.
Table 16-5:
Data Length Code Setting
Data Length Code
Remark:
244
DLC3
DLC2
DLC1
DLC0
Number of Data Bytes
0
0
0
0
0
0
0
0
1
1
.
.
.
.
.
.
.
.
0
1
1
1
7
1
X
X
X
8
In case of a remote frame, the data field is not generated even if data length code ≠ '0'.
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(4)
Data field: This field carries the data bytes to be sent. The number of data bytes is defined by the
DLC value.
Figure 16-8:
Control field
Data Field
Data field
CRC field
R
D
Data
(8 bits)
Data
(8 bits)
(5)
CRC field: This field consists of a 15-bit CRC sequence to check the transmission error and a
CRC delimiter.
Figure 16-9:
Data field and control field
CRC Field
CRC field
ACK field
R
D
CRC sequence CRC delimiter
(1 bit)
(15 bits)
• 15 bits CRC generation polynomial is expressed by
P(X) = X 15 + X 14 + X 10 + X 8 + X 7 + X 4 + X 3 + 1.
• Transmission node: Transmits the CRC sequence calculated from the start of frame, arbitration
field, control field and data field eliminating stuff bits.
• Reception node: The CRC received will be compared with the CRC calculated in the receiving
node. For this calculation the stuff bits of the received CRC are eliminated. In case these do not
match, the node issues an error frame.
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CAN Controller
ACK field: For check of normal reception.
Figure 16-10:
ACK Field
ACK field
CRC field
End of frame
R
D
ACK slot ACK delimiter
(1 bit)
(1 bit)
• Receive node sets the ACK slot to dominant level if no error was detected.
(7)
End of frame: Indicates the end of the transmission/reception.
Figure 16-11:
ACK field
R
D
246
End of frame
End of Frame
Interframe space of overload frame
(7 bits)
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(8)
Interframe space: This sequence is inserted after data frames, remote frames, error frames, and
overload frames in the serial bitstream on the bus to indicate start or end of a frame. The length of
the interframe space depends on the error state (active or passive) of the node.
(a) Error active: Consists of 3 bits intermission and bus idle.
Figure 16-12:
Any frame
Interframe Space/Error Active
Any frame
Interframe space
R
D
Intermission
(3 bits)
Bus idle
(0 to ¥ bits)
(b) Error passive: Consists of 3 bits intermission, suspend transmission and bus idle.
Figure 16-13:
Each frame
Interframe Space/Error Passive
Each frame
Interframe space
R
D
Intermission
(3 bits)
Remark:
Suspend
transmission
(8 bits)
Bus idle
(0 to ¥ bits)
The nominal value of the intermission field is 3 bits. However, transmission nodes may start
immediately a transmission already in the 3rd bit of this field when a dominant level is
detected.
Table 16-6:
Error State
Operation in the Error State
Operation
Error active
Any node in this state is able to start a transmission whenever the bus is idle.
Error passive
Any node in this state has to wait for 11 consecutive recessive bits before initiating a
transmission.
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16.1.5 Error Frame
• This frame is sent from a node if an error is detected.
• The type of an Error Frame is defined by its error flag: ACTIVE ERROR FLAG or PASSIVE
ERROR FLAG. Which kind of flag a node transmits after detecting an error condition depends
on the internal count of the error counters of each node.
Figure 16-14:
Error Frame
Error frame
R
D
„
(
)

‚
ƒ
…
(
)
Interframe space or overload frame
Error delimiter
Error flag
Error flag
Error bit
Table 16-7:
No.
Name
1
Error flag
2
Error flag
superpositioning
3
Bit Number
6
Definition of each Field
Definition
Error active node: sends 6 bits dominant level continuously.
Error passive node: sends 6 bits recessive level continuously.
0 to 6
Nodes receiving an “error flag” detect bit stuff errors and issue error
flags’ themselves.
Error delimiter
8
Sends 8 bits recessive level continuously.
In case of monitoring dominant level at 8th bit, an overload frame is
transmitted after the next bit.
4
Erroneous bit
-
An error frame is transmitted continuously after the bit where the error
has occurred (in case of a CRC error, transmission continues after
the ACK delimiter).
5
Interframe space/
overload frame
248
3/14
20 MAX
Interframe space or overload frame continues.
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16.1.6 Overload Frame
• This frame is started at the first bit of the intermission when the reception node is busy with
exploiting the receive operation and is not ready for further reception.
• When a bit error is detected in the intermission, also an overload frame is sent following the next
bit after the bit error detection.
• Detecting a dominant bit during the 3rd bit of intermission will be interpreted as START OF
FRAME.
• At most two OVERLOAD FRAMEs may be generated to delay the next DATA FRAME or
REMOTE FRAME.
Figure 16-15:
Overload Frame
Overload frame
R
D
„
(
)

‚
ƒ
…
(
)
Interframe space or overload frame
Overload delimiter
Overload flag superpositioning (Node n)
Overload flag (Node m)
Each frame
Table 16-8:
No.
Name
Bit Number
Definition of each Frame
Definition
1
Overload flag
6
2
Overload flag
from any node
0 to 6
3
Overload
delimiter
8
Sends 8 bits recessive level continuously.
In case of monitoring dominant level at 8th bit, an overload frame is
transmitted after the next bit.
4
Any frame
-
Output following the end of frame, error delimiter and overload
delimiter.
5
Interframe space/
overload frame
3/14
20 MAX
Sent 6 bits dominant level continuously.
A node that receives an overload flag in the interframe space.
Issues an overload flag.
Interframe space or overload frame continues.
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16.2 Function
16.2.1 Arbitration
If two or more nodes happen to start transmission in coincidence, the access conflict is solved by a bitwise arbitration mechanism during transmission of the ARBITRATION FIELD.
(1)
When a node starts transmission:
• During bus idle, the node having the output data can transmit.
(2)
When more than one node starts transmission:
• The node with the lower identifier wins the arbitration.
• Any transmitting node compares its output arbitration field and the data level on the bus.
• It looses arbitration, when it sends recessive level and reads dominant from bus.
Table 16-9:
Level Detection
(3)
Arbitration
Status of Arbitrating Node
Conformity of Level
Continuous Transmission
Non-conformity of
Level
The data output is stopped from the next bit and reception operation starts.
Priority of data frame and remote frame:
• When a data frame and remote frame with the same message identifier are on the bus, the data
frame has priority because its RTR bit carries 'Dominant level'. The data frame wins the
arbitration.
16.2.2 Bit Stuffing
When the same level continues for more than 5 bits, bit stuffing (insert 1 bit with inverse level) takes
place.
• Due to this a resynchronization of the bit timing can be done at least every 10 bits.
• Nodes detecting an error condition send an error frame, violating the bit stuff rule and indicating
this message to be erroneous for all nodes.
Table 16-10:
Bit Stuffing
Transmission
During the transmission of a data frame and a remote frame, when the same level continues
for 5 bits in the data between the start of frame and the ACK field, 1 bit level with reverse level
of data is inserted before the following bit.
Reception
During the reception of a data frame and a remote frame, when the same level continues for
5 bits in the data between the start of frame and the ACK field, the reception is continued by
deleting the next bit.
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16.2.3 Multi Master
As the bus priority is determined by the identifier, any node can be the bus master.
16.2.4 Multi Cast
Any message can be received by any node (broadcast).
16.2.5 Sleep Mode/Stop Function
This is a function to put the CAN controller in waiting mode to achieve low power consumption. The
SLEEP mode of the DCAN complies to the method described in ISO 11898.
Additional to this SLEEP mode, which can be woken up by bus activities, the STOP mode is fully controlled by the CPU device.
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16.2.6 Error Control Function
(1)
Error types
Table 16-11:
Error Types
Description of Error
Type
Detection State
Detection Method
Detection
Condition
Transmission/
Reception
Field/Frame
Bit error
Comparison of output
level and level on the bus
(except stuff bit)
Disagreement
of both levels
Transmission/
reception node
Bit that output data on the bus at the
start of frame to the end of frame,
error frame and overload frame.
Stuff error
Check of the reception
data at the stuff bit
6 consecutive
bits of the
same output
level
Transmission/
reception node
Start of frame to CRC sequence
CRC error
Comparison of the CRC
generated from the
reception data and the
received CRC sequence
Disagreement
of CRC
Reception node Start of frame to data field
Form
error
Field/frame check of the
fixed format
Detection of
the fixed format error
CRC delimiter
ACK field
Reception node End of frame
Error frame
Overload frame
ACK error
Check of the ACK slot by
the transmission node
Detection of
recessive
level in ACK
slot
Transmission
node
(2)
Output timing of the error frame
Table 16-12:
Type
(3)
ACK slot
Output Timing of the Error Frame
Output timing
Bit error, stuff error,
form error, ACK error
Error frame is started at the next bit timing following the detected error
Error passive
CRC error Error frame is started at the next bit timing following the ACK delimiter
Measures when error occurs
• Transmission node re-transmits the data frame or the remote frame after the error frame.
• The CAN standard (ISO-11898) allows a programmable suppression of this re-transmission. It
is called single shot mode.
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(4)
Error state
(a) Types of error state
• Three types of error state: These are error active, error passive and bus off.
• The transmission error counter (TEC) and the reception error counter (REC) control the error
state.
• The error counters are incremented on each error occurrence (refer to Table 3-6).
• If the value of error counter exceeds 96, warning level for error passive state is reached.
• When only one node is active at start-up, it may not receive an acknowledgment on a
transmitted message. This will increment TEC until error passive state is reached. The bus off
state will not be reached because for this specific condition TEC will not increment any more if
values greater than 127 are reached.
• A node in bus off state will not issue any dominant level on the CAN transmit pin. The reception
of messages is not affected by the bus off state.
Table 16-13:
Type
Error active
Error passive
Bus off
Operation
Value of Error Counter
Transmission/
reception
0 to 127
Transmission
128 to 255
Reception
Transmission
Reception
Types of Error
128 or more
more than 255
-
Output Error Flag Type
Active error flag (6 bits of dominant level continue)
Passive error flag (6 bits of recessive level continue)
Communication cannot be made
Does not exist
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(b) Error counter
• Error counter counts up when an error has occurred, and counts down upon successful
transmission and reception. The error counters are updated during the first bit of an error flag.
Table 16-14:
Error Counter
Transmission Error
Counter (TEC)
Reception Error
Counter (REC)
Reception node detects an error (except bit error in the active
error flag or overload flag).
No change
+1
Reception node detects dominant level following the error flag
of the own error frame.
No change
+8
Transmission node transmits an error flag.
Exception:
1. ACK error is detected in the error passive state and dominant level is not detected in the passive error flag sent.
2. Stuff error generation in arbitration field.
+8
No change
Bit error detection during active error flag and overload flag
when transmitting node is in error active state.
+8
No change
Bit error detection during active error flag and overload flag
when receiving node is in error active state.
No change
+8
+8
+8
When the transmitting node has completed to sent without
error.
-1
(-0 when
error counter = 0)
No change
When the reception node has completed to receive without
error.
No change
-1 (1 ≤REC ≤127)
–0 (REC = 0)
119-127 (REC > 127)
State
When the node detects fourteen continuous dominant bits
counted from the beginning of the active error flag or the overload flag, and every time, eight subsequent dominant bits after
that are detected.
Every time when the node detects eight continuous dominant
bits after the passive error flag.
(c) Overload frame
• In case the recessive level of first intermission bit is driven to dominant level, an overload frame
occurs on the bus. Upon detection of an overload frame any transmit request will be postponed
until the bus becomes idle.
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16.2.7 Baud Rate Control Function
(1)
Nominal bit time (8 to 25 time quanta)
• Definition of 1 data bit time is as follows.
Figure 16-16:
Nominal Bit Time (8 to 25 Time Quanta)
Nominal bit time
Sync
segment
Prop
segment
Phase
segment 1
Phase
segment 2
SJW
SJW
Sample point
[1 Minimum time for one time/quantum (TQ) = 1/fx]
• Sync segment: In this segment the bit synchronization is performed.
• Prop segment: This segment absorbs delays of the output buffer, the CAN bus and the input
buffer. Prop segment time =(output buffer delay) + (CAN bus delay) + (input buffer delay).
• Phase segment 1/2: These segments compensate the data bit time error. The larger the size
measured in TQ is, the larger is the tolerable error.
• The synchronization jump width (SJW) specifies the synchronization range. The SJW is
programmable. SJW can have less or equal number of TQ as phase segment 2.
Table 16-15:
Segment Name and Segment Length
Segment Name
Segment Length
(allowed Number of TQs)
Sync segment
(Synchronization segment)
1
Prop segment
(Propagation segment)
Programmable 1 to 8
Phase segment 1
(Phase buffer segment 1)
Programmable 1 to 8
Phase segment 2
(Phase buffer segment 2)
Maximum of phase segment 1
and the IPT Note
SJW
Programmable 1 to 4
Note: IPT = Information Processing Time. It needs to be less than or equal to 2 TQ.
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CAN Controller
Adjusting synchronization of the data bit
• The transmission node transmits data synchronized to the transmission node bit timing.
• The reception node adjusts synchronization at recessive to dominant edges on the bus.
Depending on the protocol this synchronization can be a hard or soft synchronization.
(a) Hard synchronization
This type of synchronization is performed when the reception node detects a start of frame in the
bus idle state.
• When the node detects a falling edge of a SOF, the current time quanta becomes the
synchronization segment. The length of the following segments are defined by the values
programmed into the SYNC0 and SYNC1 registers.
Figure 16-17:
Adjusting Synchronization of the Data Bit
Bus idle
Start of frame
CAN bus
Bit timing
256
Sync
segment
Prop
segment
Phase
segment 1
Phase
segment 2
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(b) Soft synchronization
When a recessive to dominant level change on the bus is detected, a soft synchronization is
performed.
• If the phase error is larger than the programmed SJW value, the node will adjust the timing by
applying this SJW-value. Full synchronization is achieved by subsequent adjustments on the
next recessive to dominant edge(s).
• These errors that are equal or less of the programmed SJW are corrected instantly and full
synchronization is achieved already for the next bit.
• The TQ at which the edge occurs becomes sync segment forcibly, if the phase error is less than
or equal to SJW.
Figure 16-18:
Phase
segment
Bit Synchronization
Sync
segment
Prop
segment
-SJW
Phase
segment 2
Sync
segment
Prop
segment
+SJW
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16.2.8 State Shift Chart
Figure 16-19:
Transmission State Shift Chart
Reception
C
Start of frame
End
Bit error
Arbitration field
A
Reception
RTR = 1
Control field
Bit error
RTR = 0
Data field
Bit error
End
CRC field
Bit error
End
ACK field
ACK error
End
End of frame
End
Intermission 1
Error passive
Bit error
Error frame
End
Bit error
Bit error
Form error
Overload frame
End
Error active
Initialization setting
Intermission 2
8 bits of '1'
Start of frame reception
B
Bus idle
Start of frame transmission
Reception
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Figure 16-20:
Reception State Shift Chart
Transmission
B
Start of frame
Transmission
End
A
Stuff error
Arbitration field
RTR = 1
Stuff error
Control field
RTR = 0
Data field
Stuff error
End
CRC field
CRC error, stuff error
End
ACK field
ACK error, bit error
End
End of frame
Bit error, form error
Error frame
End
End
Intermission 1
Not ready
Not ready
Bit error
Form error
Overload frame
End
Initialization setting
Start of frame transmission
C
Bus idle
Start of frame reception
Transmission
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Chapter 16
Figure 16-21:
CAN Controller
Error State Shift Chart
(a) Transmission
Error active
TEC >
TEC < 127
128
Error passive
TEC
>
256
Bus off
TEC = 0
TEC = Transmission error counter
(b) Reception
Error active
REC > 128
Error passive
REC < 127
REC = Reception error counter
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16.3 Outline Description
Figure 16-22:
Structural Block Diagram
CANL
CANH
CPU Access
Bus Arbitration Logic
Receive
Messages
Receive
Messages
Receive
Messages
Receive
Messages
CPU
SFR
Memory
Access
Engine
Transmit
Buffers
Transmit
Buffers
Interface
Management
High Speed
RAM
Memory
Buffer
RAM
(includes global registers)
CAN
Protocol
Time Stamp Signal
Timer
DCAN-Interface
External
Transceiver
This interface part handles all protocol activities by hardware in the CAN protocol part. The memory
access engine fetches information for the CAN protocol transmission from the dedicated RAM area to
the CAN protocol part or compares and sorts incoming information and stores it into predefined RAM
areas.
The DCAN interfaces directly to the RAM area that is accessible by the DCAN and by the CPU.
The DCAN part works with an external bus transceiver which converts the transmit data and receive
data lines to the electrical characteristics of the CAN bus itself.
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CAN Controller
16.4 Connection with Target System
The DCAN Macro has to be connected to the CAN bus with an external transceiver.
Figure 16-23:
Connection to the CAN Bus
CTXD
DCAN Macro
CRXD
CANL
Transceiver
CANH
16.5 CAN Controller Configuration
The CAN-module consists of the following hardware
.
Table 16-16: CAN Configuration
Item
262
Configuration
Message definition
In RAM area
CAN input/output
1 (CTXD)
1 (CRXD)
Control registers
CAN control register (CANC)
Transmit control register (TCR)
Receive message register (RMES)
Redefinition control register (REDEF)
CAN error status register (CANES)
Transmit error counter (TEC)
Receive error counter (REC)
Message count register (MCNT)
Bit rate prescaler (BRPRS)
Synchronous control register 0 (SNYC0)
Synchronous control register 1 (SYNC1)
Mask control register (MASKC)
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16.6 Special Function Register for CAN-module
Table 16-17:
Register Name
SFR Definitions
Symbol
R/W
Bit Manipulation Units
1-bit
8-bit
16-bit
After Reset
CAN control register
CANC
R/W
×
×
-
01H
Transmit control register
TCR
R/W
-
×
-
00H
Receive message register
RMES
R
-
×
-
00H
Redefinition control register
REDEF
R/W
×
×
-
00H
CAN error status register
CANES
R/W
-
×
-
00H
Transmit error counter
TEC
R
-
×
-
00H
Receive error counter
REC
R
-
×
-
00H
Message count register
MCNT
R
-
×
-
C0H
Bit rate prescaler
BRPRS
R/W
-
×
-
00H
Synchronous control register 0
SYNC0
R/W
-
×
-
18H
Synchronous control register 1
SYNC1
R/W
-
×
-
0EH
Mask control register
MASKC
R/W
-
×
-
00H
The following SFR bits can be accessed with 1-bit instructions. The other SFR registers have to be
accessed with 8-bit instructions.
Table 16-18: SFR Bit Definitions
Name
Description
Bit
SOFE
Start of frame enable
CANC.4
SLEEP
Sleep mode
CANC.2
INIT
Initialize
CANC.0
DEF
Redefinition enable
REDEF.7
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16.7 Message and Buffer Configuration
Table 16-19:
Address Note 2
Message and Buffer Configuration
Register Name
00xH
Transmit buffer 0
01xH
Transmit buffer 1
02xH
Receive message 0 / Mask 0
03xH
Receive message 1
04xH
Receive message 2 / Mask 1
05xH
Receive message 3
06xH
Receive message 4
07xH
Receive message 5
08xH
Receive message 6
09xH
Receive message 7
0AxH
Receive message 8
0BxH
Receive message 9
0CxH
Receive message 10
0DxH
Receive message 11
0ExH
Receive message 12
0FxH
Receive message 13
10xH
Receive message 14
11xH
Receive message 15
R/W
After Reset
R/W
Note 1
Notes: 1. Contents is undefined, because data resides in normal RAM area.
2. This address is an offset to the RAM area starting address defined with CADD0/1 in the
message count register (MCNT).
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16.8
Transmit Buffer Structure
The DCAN has two independent transmit buffers. The two buffers have a 16 byte data structure for
standard and extended frames with the ability to send up to 8 data bytes per message. The structure of
the transmit buffer is similar to the structure of the receive buffers. The CPU can use addresses that are
specified as “unused” in the transmit buffer layout. As well the CPU may use unused ID addresses,
unused data addressesNote, and an unused transmit buffer of the DCAN for its own purposes. The control bits, the identification and the message data have to be stored in the message RAM area.
The transmission control is done by the TCR register. A transmission priority selection allows the customer to realize an application specific priority selection. After the priority selection the transmission
can be started by setting the TXRQn bit (n = 0, 1).
In the case that both transmit buffers are used, the transmit priorities can be set. For this purpose the
DCAN has the TXP bit in the TCR register. The application software has to set this priority before the
transmission is started.
The two transmit buffers supply two independent interrupt lines for an interrupt controller.
Note: Message objects that need less than 8 data byte (DLC < 8) may use the remaining bytes
(8 - DLC) for application purposes.
16.9 Transmit Message Format
Table 16-20:
Transmit Message Format
Name
AddressNote
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
TCON
n0H
IDE
RTR
0
0
DLC3
DLC2
DLC1
DLC0
0
0
0
0
0
0
n1H
Unused
IDTX0
n2H
ID standard part
IDTX1
n3H
IDTX2
n4H
ID extended part
IDTX3
n5H
ID extended part
IDTX4
n6H
ID standard part
ID extended part
0
0
0
0
0
n7H
Unused
DATA0
n8H
Message data byte 0
DATA1
n9H
Message data byte 1
DATA2
nAH
Message data byte 2
DATA3
nBH
Message data byte 3
DATA4
nCH
Message data byte 4
DATA5
nDH
Message data byte 5
DATA6
nEH
Message data byte 6
DATA7
nFH
Message data byte 7
Note: This address is a relative offset to the starting address of the transmit buffer.
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Transmit Message Definition
The memory location labelled TCON includes the information of the RTR bit and the bits of the
control field of a data or remote frame.
TCON is set with a 1-bit or an 8-bit memory manipulation instruction.
RESET input sets TCON to an undefined value.
Figure 16-24:
Transmit Message Definition Bits
Symbol
7
6
5
4
3
2
1
0
TCON
IDE
RTR
0
0
DLC3
DLC2
DLC1
DLC0
IDE
xxx0H
undefined R/W
Identifier Extension Select
0
Transmit standard frame message; 11 bit identifier
1
Transmit extended frame message; 29 bit identifier
RTR
Remote Transmission Select
0
Transmit data frames
1
Transmit remote frames
DLC3
DLC2
DLC1
DLC0
Data Length Code Selection of
Transmit Message
0
0
0
0
0 data bytes
0
0
0
1
1 data bytes
0
0
1
0
2 data bytes
0
0
1
1
3 data bytes
0
1
0
0
4 data bytes
0
1
0
1
5 data bytes
0
1
1
0
6 data bytes
0
1
1
1
7 data bytes
1
0
0
0
8 data bytes
Others than above
Remark:
Address After Reset R/W
Note
The control field describes the format of frame that is generated and its length. The
reserved bits of the CAN protocol are always sent in dominant state (0).
Note: The data length code selects the number of bytes which have to be transmitted. Valid entries for
the data length code (DLC) are 0 to 8. If a value greater than 8 is selected, 8 bytes are
transmitted in the data frame. The Data Length Code is specified in DLC3 through DLC0.
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(2)
Transmit Identifier Definition
These memory locations set the message identifier in the arbitration field of the CAN protocol.
IDTX0 to IDTX4 register can be set with a 1-bit or an 8-bit memory manipulation instruction.
RESET input sets IDTX0 to IDTX4 to an undefined value.
Figure 16-25:
Transmit Identifier
Symbol
7
6
5
4
3
2
1
0
IDTX0
ID28
ID27
ID26
ID25
ID24
ID23
ID22
ID21
xxx2H
undefined R/W
IDTX1
ID20
ID19
ID18
0
0
0
0
0
xxx3H
undefined R/W
IDTX2
ID17
ID16
ID15
ID14
ID13
ID12
ID11
ID10
xxx4H
undefined R/W
IDTX3
ID9
ID8
ID7
ID6
ID5
ID4
ID3
ID2
xxx5H
undefined R/W
IDTX4
ID1
ID0
0
0
0
0
0
0
xxx6H
undefined R/W
Remark:
Address After Reset R/W
If a standard frame is defined by the IDE bit in the TCON byte then IDTX0 and IDTX1 are
used only. IDTX2 to IDTX4 are free for use by the CPU for application needs.
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Transmit Data Definition
These memory locations set the transmit message data of the data field in the CAN frame.
DATA0 to DATA7 can be set with a 1-bit or an 8-bit memory manipulation instruction.
RESET input sets DATA0 to DATA7 to an undefined value.
Figure 16-26:
Symbol
7
6
5
4
3
Transmit Data
2
1
0
Address After Reset R/W
DATA0
xxx8H
undefined R/W
DATA1
xxx9H
undefined R/W
DATA2
xxxAH
undefined R/W
DATA3
xxxBH
undefined R/W
DATA4
xxxCH
undefined R/W
DATA5
xxxDH
undefined R/W
DATA6
xxxEH
undefined R/W
DATA7
xxxFH
undefined R/W
Remark:
268
Unused data bytes that are not used by the definition in the DLC bits in the TCON byte are
free for use by the CPU for application needs.
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16.10 Receive Buffer Structure
The DCAN has up to 16 receive buffers. The number of used buffers is defined by the MCNT register.
Unused receive buffers can be used as application RAM for the CPU. The received data is stored
directly in this RAM area.
The 16 buffers have a 16 byte data structure for standard and extended frames with a capacity of up to
8 data bytes per message. The structure of the receive buffer is similar to the structure of the transmit
buffers. The semaphore bits DN and MUC enable a secure reception detection and data handling. For
the first 8 receive message buffers the successful reception is mirrored by the DN-flags in the RMES
register.
The receive interrupt request can be enabled or disabled for each used buffer separately.
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16.11 Receive Message Format
Table 16-21:
Receive Message Format
AddressNote 1
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
IDCON
n0H
0
0
0
0
0
ENI
RTR
IDE
DSTAT
n1H
DN
MUC
R1
R0
IDREC0
n2H
IDREC1
n3H
IDREC2
n4H
ID extended part
IDREC3
n5H
ID extended part
IDREC4
n6H
Name
DLC
ID standard part
ID standard part
ID extended part
0
0
0
0
0
0
0
n7H
unused
DATA0
n8H
Message data byte 0
DATA1
n9H
Message data byte 1
DATA2
nAH
Message data byte 2
DATA3
nBH
Message data byte 3
DATA4
nCH
Message data byte 4
DATA5
nDH
Message data byte 5
DATA6
nEH
Message data byte 6
DATA7
nFH
Message data byte 7
0
RTRRECNote 2
0
0
Notes: 1. This address is a relative offset to the start address of the receive buffer.
2. RTRREC is the received value of the RTR message bit when this buffer is used together with
a mask function.
By using the mask function a successfully received identifier overwrites the bytes IDREC0
and IDREC1 for standard frame format and IDREC0 to IDREC4 for extended frame format.
For the RTRREC bit exist two modes:
•
RTR bit in the MCON byte of the dedicated mask is set to 0. In this case RTRREC will
always be written to 0 together with the update of the IDn bits in IDREC1. The received
frame type (data or remote) is defined by the RTR bit in IDCON of the buffer.
•
RTR bit in the MCON byte of the dedicated mask is set to 1 (data and remote frames
are accepted). In this case the RTR bit in IDCON has no meaning. The received message type passed the mask is shown in RTRREC.
If a buffer is not assigned to a mask function (mask 1, mask 2 or global mask) the bytes
IDREC0 to IDREC4 are only read for comparing. During initialization the RTRREC should be
defined to 0.
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(1)
Receive control bits definition
The memory location labelled IDCON defines the kind of frame (data or remote frame with standard or extended format) that is monitored for the associated buffer. Notification by the receive interrupt upon successful reception can be selected for each receive buffer separately.
IDCON can be set with a 1-bit or an 8-bit memory manipulation instruction.
RESET input sets IDCON to an undefined value.
Figure 16-27:
Control bits for Receive Identifier
Symbol
7
6
5
4
3
2
1
0
IDCON
0
0
0
0
0
ENI
RTR
IDE
IDE
Receive standard frame message; 11-bit identifier
1
Receive extended frame message; 29-bit identifier
undefined R/W
Remote Transmission Select
0
Receive data frames
1
Receive remote frames
ENI
xxx0H
Identifier Extension Select
0
RTR
Address After Reset R/W
Enable Interrupt on ReceiveNote
0
No interrupt generated
1
Generate receive interrupt after reception of valid message
The control bits define the type of message that is transferred in the associated buffer if this type of
message appears on the bus.
This byte will never be written by the DCAN. Only the host CPU can change this byte.
Note: The user has to define with the ENI bit if he wants to set a receive interrupt request when new
data is received in this buffer.
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Receive status bits definition
The memory location labelled DSTAT sets the receive status bits of the arbitration field of the CAN
protocol.
DSTAT can be set with a 1-bit or an 8-bit memory manipulation instruction.
RESET input sets DSTAT to an undefined value.
Figure 16-28:
Receive Status Bits (1/2)
Symbol
7
6
5
4
3
2
1
0
DSTAT
DN
MUC
R1
R0
DLC3
DLC2
DLC1
DLC0
Address After Reset R/W
xxx1H
undefined R/W
The receive status reflects the current status of a message. It signals whether new data is stored or if
the DCAN currently transfers data into this buffer.
In addition the data length of the last transferred data and the reserved bits of the protocol are shown.
DN
Data New
0
No change in data
1
Data changed
The DCAN-module sets DN twice. At first when it starts storing a message from the shadow buffer into
the receive buffer and secondly when it finished the operation.
The CPU needs to clear this bit, to signal by itself that it has read the data. During initialization of the
receive buffers the DN-bit should also be cleared. Otherwise the CPU gets no information on an update
of the buffer after a successful reception.
MUC
Memory Update
0
CAN does not access data part
1
CAN is transferring new data to message buffer
The DCAN-module sets MUC when it starts transferring a message into the buffer and clears the MUC
bit when the transfer is finished.
R1
0
Reserved bit 1 of received message was “0”
1
Reserved bit 1 of received message was “1”
R0
272
Reserved Bit 1
Reserved Bit 0
0
Reserved bit 0 of received message was “0”
1
Reserved bit 0 of received message was “1”
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Figure 16-28:
Receive Status Bits (2/2)
Data Length Code Selection
of Receive Message
DLC3
DLC2
DLC1
DLC0
0
0
0
0
0 data bytes
0
0
0
1
1 data bytes
0
0
1
0
2 data bytes
0
0
1
1
3 data bytes
0
1
0
0
4 data bytes
0
1
0
1
5 data bytes
0
1
1
0
6 data bytes
0
1
1
1
7 data bytes
1
0
0
0
8 data bytes
Others than above
Note
DSTAT is written by the DCAN two times during message storage:
At the first access to this buffer DN = 1, MUC = 1, reserved bits and DLC are written.
At the last access to this buffer DN = 1, MUC = 0, reserved bits and DLC are written.
Note: Valid entries for the data length code are 0 to 8. If a value higher than 8 is received, 8 bytes are
stored in the message buffer frame together with the data length code received in the DLC of
the message.
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Receive Identifier Definition
These memory locations define the receive identifier of the arbitration field of the CAN protocol.
IDREC0 to IDREC4 can be set with a 1-bit or an 8-bit memory manipulation instruction.
RESET input sets IDREC0 to IDREC4 to an undefined value.
Figure 16-29:
Receive Identifier
Symbol
7
6
5
4
3
2
1
0
IDREC0
ID28
ID27
ID26
ID25
ID24
ID23
ID22
ID21
Address After Reset R/W
xxx2H
undefined R/W
IDREC1
ID20
ID19
ID18
0
0
0
0
RTRREC
xxx3H
undefined R/W
IDREC2
ID17
ID16
ID15
ID14
ID13
ID12
ID11
ID10
xxx4H
undefined R/W
IDREC3
ID9
ID8
ID7
ID6
ID5
ID4
ID3
ID2
xxx5H
undefined R/W
IDREC4
ID1
ID0
0
0
0
0
0
0
xxx6H
undefined R/W
The identifier of the receive message has to be defined during the initialization of the DCAN.
The DCAN uses this data for the comparison with the identifiers received on the CAN bus. For normal
message buffers without mask function this data is only read by the DCAN for comparison. In combination with a mask function this data is overwritten by the received ID that has passed the mask.
The identifier of the receive messages should not be changed without being in the initialization phase or
setting the receive buffer to redefinition in the RDEF register, because the change of the contents can
happen at the same time when the DCAN uses the data for comparison. This can cause inconsistent
data stored in this buffer and also the ID-part can be falsified in case of using mask function.
Remarks: 1. The unused parts of the identifier (IDREC1 bit 4 - 0 always and IDREC4 bit 5 - 0 in case
of extended frame reception) may be written by the DCAN to “0”. They are not released
for other use by the CPU.
2. RTRREC is the received value of the RTR message bit when this buffer is used together
with a mask function.
By using the mask function a successfully received identifier overwrites the IDREC0
and IDREC1 registers for standard frame format and the IDREC0 to IDREC4 registers
for extended frame format.
For the RTRREC bit exists two modes:
•
RTR bit in the MCON register of the dedicated mask is set to “0”. In this case
RTRREC bit will always be written to “0” together with the update of the IDn bits
(n = 18 to 20) in IDREC1. The received frame type (data or remote) is defined by
the RTR bit in IDCON of the buffer.
•
RTR bit in the MCON register of the dedicated mask is set to “1” (data and remote
frames are accepted). In this case the RTR bit in IDCON register has no meaning.
The received message type passed the mask is shown in RTRREC bit.
If a buffer is not dedicated to a mask function (mask 1, mask 2 or global mask) the
IDREC0 to IDREC4 registers are only read for comparing. All receive identifiers should
be defined to “0” before the application sets up its specific values.
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Receive Message Data Part
These memory locations set the receive message data part of the CAN protocol.
DATA0 to DATA7 can be set with a 1-bit or an 8-bit memory manipulation instruction.
RESET input sets DATA0 to DATA7 to an undefined value.
Figure 16-30:
Symbol
7
6
5
4
3
Receive Data
2
1
0
Address After Reset R/W
DATA0
xxx8H
undefined R/W
DATA1
xxx9H
undefined R/W
DATA2
xxxAH
undefined R/W
DATA3
xxxBH
undefined R/W
DATA4
xxxCH
undefined R/W
DATA5
xxxDH
undefined R/W
DATA6
xxxEH
undefined R/W
DATA7
xxxFH
undefined R/W
The DCAN stores received data bytes in this memory area. Only those data bytes which are actually
received and match with the identifier are stored in the receive buffer memory area.
If the DLC is less than eight, the DCAN will not write additional bytes exceeding the DLC value up to
eight. The DCAN stores a maximum of 8 bytes (according to the CAN protocol rules) even when the
received DLC is greater than eight.
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16.12 Mask Function
Table 16-22: Mask Function
Name
Address
MCON
n0H
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
RTR
n1H
Unused
MREC0
n2H
ID standard part
MREC1
n3H
MREC2
n4H
ID extended part
MREC3
n5H
ID extended part
MREC4
n6H
ID standard part
ID extended part
0
0
0
n7H
Unused
n8H
Unused
n9H
Unused
nAH
Unused
nBH
Unused
nCH
Unused
nDH
Unused
nEH
Unused
nFH
Unused
0
0
0
0
0
0
0
0
Receive message buffer 0 and buffer 2 can be switched for masked operation with the mask control
register (MASKC). In this case the message does not hold message identifier and data of the frame.
Instead, it holds identifier and RTR mask information for masked compare operations for the next higher
message buffer number. In case the global mask is selected, it keeps mask information for all higher
message buffer numbers.
A mask does not store any information about identifier length. Therefore the same mask can be used
for both types of frames (standard and extended) during global mask operation.
All unused bytes can be used by the CPU for application needs.
(1)
Identifier Compare with Mask
The identifier compare with mask provides the possibility to exclude some bits from the comparison process. That means each bit is ignored when the corresponding bit in the mask definition is
set to one.
The setup of the mask control register (MASKC) defines which receive buffer is used as a mask
and which receive buffer uses which mask for comparison.
The mask does not include any information about the identifier type to be masked. This has to be
defined within the dedicated receive buffer. Therefore a global mask can serve for standard
receive buffers at the same time as for extended receive buffer.
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Figure 16-31:
Identifier Compare with Mask
Received Identifier
Compare
Bit by Bit
Store on equal
Mask stored in Receive Buffer 0 or 2
Disable
Compare
for masked
Bits
Identifier stored in Receive Buffer
This function implements the so called basic-CAN behaviour.
In this case the type of identifier is fixed to standard or extended by the setup of the IDE bit in the
receive buffer. The comparison of the RTR bit can also be masked. It is possible to receive data and
remote frames on the same masked receive buffer.
The following information is stored in the receive buffer:
• Identifier (11 or 29 bit as defined by IDE bit)
• Remote bit (RTRREC) if both frames types (data or remote) can be received by this buffer
• Reserved bits
• Data length code (DLC)
• Data bytes as defined by DLC
Caution:
All writes into the DCAN memory are byte accesses. Unused bits in the same byte
will be written zero. Unused bytes will not be written and are free for application use
by the CPU.
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Mask Identifier Control Register (MCON)
The memory location labelled MCON sets the mask identifier control bit of the CAN protocol.
MCON can be set with a 1-bit or an 8-bit memory manipulation instruction.
RESET input sets MCON to an undefined value.
Figure 16-32:
Control Bits for Mask Identifier
Symbol
7
6
5
4
3
2
1
0
MCON
0
0
0
0
0
0
RTR
0
RTR
Address After Reset R/W
xxx0H
undefined R/W
Remote Transmission Select
0
Check RTR bit of received message Note 1
1
Receive message independent from RTR bit Note 2
Notes: 1. For RTR = 0 the received frame type (data or remote) is defined by the RTR bit in IDCON of
the dedicated buffer. In this case RTRREC will always be written to “0” together with the
update of the IDn bits (n = 18 to 20) in IDREC1.
2. In case RTR in MCON is set to “1”, RTR bit in IDCON of the dedicated receive buffer has no
meaning. The received message type passed the mask is shown in the RTRREC bit.
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(3)
Mask Identifier Definition
These memory locations set the mask identifier definition of the DCAN.
MREC0 to MREC4 can be set with a 1-bit or an 8-bit memory manipulation instruction.
RESET input sets MREC0 to MREC4 to an undefined value.
Figure 16-33:
Mask Identifier
Symbol
7
6
5
4
3
2
1
0
MREC0
MID28
MID27
MID26
MID25
MID24
MID23
MID22
MID21
xxx2H
undefined R/W
MREC1
MID20
MID19
MID18
0
0
0
0
0
xxx3H
undefined R/W
MREC2
MID17
MID16
MID15
MID14
MID13
MID12
MID11
MID10
xxx4H
undefined R/W
MREC3
MID9
MID8
MID7
MID6
MID5
MID4
MID3
MID2
xxx5H
undefined R/W
MREC4
MID1
MID0
0
0
0
0
0
0
xxx6H
undefined R/W
MIDn
Address After Reset R/W
Mask Identifier Bit (n = 0...28)
0
Check IDn bit in IDREC0 through IDREC4 of received message
1
Receive message independent from IDn bit
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16.13 Operation of the CAN Controller
16.13.1 CAN control register (CANC)
The operational modes are controlled via the CAN control register CANC.
CANC can be set with a 1-bit or an 8-bit memory manipulation instruction.
RESET input sets CANC to 01H.
Figure 16-34:
Symbol
7
6
5
CANC
RXF
TXF
0
R
R
R
<4>
CAN Control Register (1/2)
3
SOFE SOFSEL SLEEP
R/W
R/W
1
<0>
Address
After
Reset
STOP
INIT
FFB0H
01H
R/W
R/W
<2>
R/W
CANC.5 has always to be written as 0.
INIT
Request status for operational modes
0
Normal operation
1
Initialization mode
The INIT is the request bit to control the DCAN. INIT starts and stops the CAN protocol activities. Due
to bus activities disabling the DCAN is not allowed any time. Therefore changing the INIT bit must not
have an immediate effect to the CAN protocol activities. Setting the INIT bit is a request only.
The INITSTAT bit in the CANES register reflects if the request has been granted. The registers MCNT,
SYNC0, SYNC1, and MASKC are write protected while INIT is cleared independently of INITSTAT.
Any write to these registers when INIT is set and the initialisation mode is not confirmed by the
INITSTAT bit can have unexpected behaviour to the CAN bus.
STOP
Stop Mode Selection
0
Normal sleep operation / Sleep mode is released when a transition on
the CAN bus is detected
1
Stop operation / Sleep mode is cancelled only by CPU access. No
wake up from CAN bus
SLEEP
280
Sleep/Stop Request for CAN protocol
0
Normal operation
1
CAN protocol goes to sleep or stop mode depending on STOP bit
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Figure 16-34:
CAN Control Register (2/2)
The clock supply to the DCAN is switched off during initialization, DCAN Sleep, and DCAN Stop mode.
All modes are only accepted while CAN protocol is in idle state, whereby the CRXD pin must be recessive (= high level). A sleep or stop request out of idle state is rejected and the WAKE bit in CANES is
set. DCAN Sleep and DCAN Stop mode can be requested in the same manner. The only difference is
that the DCAN Stop mode prevents the wake up by CAN bus activity.
Caution:
The DCAN Sleep or DCAN Stop mode can not be requested as long as the WAKE bit
in CANES is set.
The DCAN Sleep mode is cancelled under following conditions:
a) CPU clears the SLEEP bit.
b) Any transition while idle state on CAN bus (STOP = 0).
c) CPU sets SLEEP, but CAN protocol is active due to bus activity.
The WAKE bit in CANES is set under condition b) and c).
SOFSEL
Start of Frame Output Function Select
0
Last bit of EOF is used to generate the time stamp
1
SOF is used to generate the time stamp
SOFE
Start of Frame Enable
0
SOFOUT does not change
1
SOFOUT toggles depending on the selected mode
Figure 16-35:
DCAN Support
Last bit
of EOF
SOF
Data CRC EOF
FRC
MUX
Receive
Buffer 4
T
T-FF
SOFSEL
Q
SOFOUT
Capture Register
SOFE
Clear
SOFC
DCAN
16 Bit Timer
The generation of an SOFOUT signal can be used for time measurements and for global time base synchronization of different CAN nodes as a prerequisite for time triggered communication.
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Table 16-23:
CAN Controller
Possible Setup of the SOFOUT Function
SOFSEL
SOFC
SOFE
x
x
0
Time stamp function disabled
0
x
1
Toggles with each EOF
1
0
1
Toggles with each start of frame on the
CAN Bus
1
Toggles with each start of frame on the
CAN bus.
Clears SOFE bit when DCAN starts to
store a message in receive buffer 4
1
1
SOFOUT Function
SOFC is located in the synchronization register SYNC1.
RESET and setting of the INIT bit of CANC register clears the SOFOUT to 0.
Table 16-24:
TXF
Transmission / Reception Flag
Transmission Flag
0
No transmission
1
Transmission active on CAN bus Note
RXF
Reception Flag
0
No data on the CAN bus
1
Reception active on the CAN bus
The TXF and RXF bits of CANC register show the present status of the DCAN to the bus.
If both bits are cleared, the bus is in idle state.
RXF and TXF bits are read-only bits. During initialization mode both bits do not reflect the bus status.
Note: Transmission is active until intermission is completed.
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Figure 16-36:
Time Stamp Function
INT
Object n
INT
Object n
Other valid or
invalid message
Valid message
SOF
Enable SOF
Valid message
SOF
SOF
Edge for capture
Edge for capture
Figure 16-37:
SOFOUT Toggle Function
Any valid or
invalid message
SOF
Any valid or
invalid message
Any valid or
invalid message
SOF
SOF
Edge for
capture
Edge for
capture
Edge for
capture
Enable
SOF
Figure 16-38:
Global Time System Function
INT
Object n
Other valid or
invalid message
SOF
Edge for
capture
Enable
SOF
Valid sync.
message buffer 4
SOF
Other valid or
invalid message
SOF
Edge for
capture
Disable
SOF
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16.13.2 DCAN Error Status Register
This register shows the status of the DCAN.
CANES has to be set with an 8-bit memory manipulation instruction.
RESET input sets CANES to 00H.
The RESET sets the INIT-bit in CANC register, therefore CANES will be read as 08H after RESET
release.
Figure 16-39:
CAN Error Status Register (1/3)
Symbol
7
6
5
4
3
2
1
0
Address
After
Reset
CANES
BOFF
RECS
TECS
0
INITSTATE
VALID
WAKE
OVER
FFB4H
00H
R
R
R
R
R
R/W
R/W
R/W
Remark:
BOFF, RECS, TECS and INITSTATE are read only bits.
Caution:
Don’t use bit operations on this SFR.
The VALID, WAKE and OVER bits have a special behavior during CPU write
operations:
•
Writing a “0” to them do not change them.
•
Writing an “1” clears the associated bit.
This avoids any timing conflicts between CPU access and internal activities. An
internal set condition of a bit overrides a CPU clear request at the same time.
BOFF
Bus Off Flag
0
Transmission error counter ≤ 255
1
Transmission error counter > 255
BOFF is cleared after receiving 128 x 11 bits recessive state (Bus idle) or by issuing a hard DCAN reset
with the TLRES bit in the MCNTn register Note.
An interrupt is generated when the BOFF bit changes its value.
RECS
Reception error counter status
0
Reception error counter < 96
1
Reception error counter ≥ 96 / Warning level for error passive reached
RECS is updated after each reception.
An interrupt is generated when RECS changes its value.
Note:
284
Issuing TLRES bit may violate the minimum recovery time as defined in ISO-11898.
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Figure 16-39:
TECS
CAN Error Status Register (2/3)
Transmission error counter status
0
Transmission error counter < 96
1
Transmission error counter ≥ 96 / Warning level for error passive reached
TECS is updated after each reception.
An interrupt is generated when TECS changes its value.
INITSTATE
Operational status of the DCAN
0
CAN is in normal operation
1
CAN is stopped and ready to accept new configuration data
INITSTATE changes with a delay to the INIT bit in CANC register. The delay depends on the current bus
activity and the time to set all internal activities to inactive state. This time can be several bit times long.
While BOFF bit is set, a request to go into the initialization mode by setting the INIT bit is ignored. In this
case the INITSTATE bit will not be set until the Bus-off state is left.
VALID
Valid protocol activity detected
0
No valid message detected by the CAN protocol
1
Error free message reception from CAN bus
This bit shows valid protocol activities independent from the message definitions and the RXONLY bit
setting in SYNC1n register. VALID is updated after each reception. The VALID bit will be set at the end
of the frame when a complete protocol without errors has been detected.
Cautions: 1. The VALID bit is cleared if CPU writes an “1” to it, or when the INIT bit in CANC
register is set.
2. Writing a “0” to the valid bit has no influence.
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Chapter 16
Figure 16-39:
CAN Controller
CAN Error Status Register (3/3)
WAKE
Wake up Condition
0
Normal operation
1
Sleep mode has been cancelled
or sleep/stop mode request was not granted
This bit is set and an error interrupt is generated under the following circumstances:
a) A CAN bus activity occurs during DCAN Sleep mode.
b) Any attempt to set the SLEEP bit in the CAN control register during receive or transmit operation will immediately set the WAKE bit.
The CPU must clear this bit after recognition in order to receive further error interrupts, because the
error interrupt line is kept active as long as this bit is set.
Cautions: 1. The WAKE bit is cleared to “0” if CPU writes an “1” to it, or when the INIT bit in
CANC register is set.
2. Writing a “0” to the WAKE bit has no influence.
OVER
Overrun Condition
0
Normal operation
1
Overrun occurred during access to RAM
The overrun condition is set whenever the CAN can not perform all RAM accesses that are necessary
for comparing and storing received data or fetching transmitted data. Typically, the overrun condition is
encountered when the frequency for the macro is too low compared to the programmed baud rate. An
error interrupt is generated at the same time.
The DCAN interface will work properly (i. e. no overrun condition will occur) with the following settings:
The DCAN clock as defined with the PRM bits in the BRPRS register is set to a minimum of 16 times of
the CAN baudrate and the selected CPU clock (defined in the PCC register) is set to a minimum of 16
times of the baudrate.
Possible reasons for an overrun condition are:
• Too many messages are defined.
• DMA access to RAM area is too slow compared to the CAN Baudrate.
The possible reactions of the DCAN differ depending on the situation, when the overrun occurs.
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Table 16-25:
Possible Reactions of the DCAN
Overrun Situation
When detected
DCAN Behavior
Cannot get transmit data.
The frame itself conforms to the CAN
specification, but its content is faulty.
Next data byte request from protocol. Corrupted data or ID in the frame.
Immediate during the frame.
TXRQx bit (x = 0, 1) is not cleared.
DCAN will retransmit the correct frame
after synchronization to the bus.
Cannot store receive data.
Data storage is ongoing during the
six bit of the next frame.
Cannot get data for ID comparison
ID compare is ongoing during six bits Message is not received and its data
of next frame.
is lost.
Data in RAM is inconsistent. No
receive flags. DN and MUC bit may be
set in message.
16.13.3 CAN Transmit Error Counter
This register shows the transmit error counter.
TEC register can be read with an 8-bit memory manipulation instruction.
RESET input sets TEC to 00H.
Figure 16-40:
Transmit Error Counter
Symbol
7
6
5
4
3
2
1
0
Address
After
Reset
TEC
TEC7
TEC6
TEC5
TEC4
TEC3
TEC2
TEC1
TEC0
FFB5H
00H
R
R
R
R
R
R
R
R
The transmit error counter reflects the status of the error counter for transmission errors as it is defined
in the CAN protocol according ISO 11898.
16.13.4 CAN Receive Error Counter
This register shows the receive error counter.
REC can be read with an 8-bit memory manipulation instruction.
RESET input sets REC to 00H.
Figure 16-41:
Receive Error Counter
Symbol
7
6
5
4
3
2
1
0
Address
After
Reset
REC
REC7
REC6
REC5
REC4
REC3
REC2
REC1
REC0
FFB6H
00H
R
R
R
R
R
R
R
R
The receive error counter reflects the status of the error counter for reception errors as it is defined in
the CAN protocol according ISO 11898.
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16.13.5 Message Count Register
This register sets the number of receive message buffers and allocates the RAM area of the receive
message buffers, which are handled by the DCAN-module.
MCNT can be read with an 8-bit memory manipulation instruction.
RESET input sets MCNT to C0H.
Figure 16-42:
Symbol
7
6
5
Message Count Register (MCNT) (1/2)
4
3
2
1
0
MCNT CADD1 CADD0 TLRES MCNT4 MCNT3 MCNT2 MCNT1 MCNT0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Address
After Reset
FFB7H
C0H
R/W
This register is readable at any time.
Write is only permitted when the CAN is in initialization mode.
288
MCNT4
MCNT3
MCNT2
MCNT1
MCNT0
Receive Message Count
0
0
0
0
0
Setting prohibited
0
0
0
0
1
1 receive buffer
0
0
0
1
0
2 receive buffer
0
0
0
1
1
3 receive buffer
0
0
1
0
0
4 receive buffer
0
0
1
0
1
5 receive buffer
0
0
1
1
0
6 receive buffer
0
0
1
1
1
7 receive buffer
0
1
0
0
0
8 receive buffer
0
1
0
0
1
9 receive buffer
0
1
0
1
0
10 receive buffer
0
1
0
1
1
11 receive buffer
0
1
1
0
0
12 receive buffer
0
1
1
0
1
13 receive buffer
0
1
1
1
0
14 receive buffer
0
1
1
1
1
15 receive buffer
1
0
0
0
0
16 receive buffer
1
x
x
x
x
Setting prohibited, will be
automatically changed to 16
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Figure 16-42:
TLRES
Cautions: 1.
Message Count Register (MCNT) (2/2)
Reset function for CAN Protocol Machine
0
No Reset is issued
1
Reset of CAN protocol machine is issued if DCAN is in bus off
state, DCAN will enter INIT state (CANC.0 = 1 && CANES.3 = 1)
Issuing TLRES bit may violate the minimum recovery time as defined in ISO11898.
2. If no receive buffer is desired, define one receive buffer and disable this buffer
with the REDEF function.
CADD1 CADD0
0
0
0
1
1
0
1
1
DCAN Address definition
Setting prohibited
F600H to F7DFH (reset value)
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16.14 Baudrate Generation
(1)
Bit Rate Prescaler Register
This register sets the clock for the DCAN (internal DCAN clock) and the number of clocks per time
quantum (TQ).
BRPRS can be set with an 8-bit memory manipulation instruction.
RESET input sets BRPRS to 3FH.
Symbol
7
BRPRS
PRM1
R/W
6
Figure 16-43:
Bit Rate Prescaler (1/2)
5
3
4
2
1
0
PRM0 BRPRS5 BRPRS4 BRPRS3 BRPRS2 BRPRS1 BRPRS0
R/W
R/W
R/W
R/W
R/W
R/W
Address
After Reset
FFB8H
3FH
R/W
The PRMn (n = 0, 1) bits define the clock source for the DCAN operation.
The PRM selector defines the input clock to the DCAN Macro and influences therefore all DCAN
activities.
Writing to the BRPRS register is only allowed during initialization mode. Any write to this register when
INIT bit is set in CANC register and the initialization mode is not confirmed by the INITSTATE bit of
CANES register can cause unexpected behaviour to the CAN bus.
PRM1
PRM0
Input Clock Selector for DCAN Clock
0
0
fX is input for DCAN
0
1
fX/2 is input for DCAN
1
0
fX/4 is input for DCAN
1
1
CCLK is input for DCAN
The BRPRSn bits (n = 0 to 5) define the number of DCAN clocks applied for one TQ.
For BRPRSn (n = 0 to 5) two modes are available depending on the TLMODE bit in the SYNC1 register.
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Figure 16-43:
Bit Rate Prescaler (2/2)
Setting of BRPRSn (n = 5 to 0) for TLMODE = 0:
BRPRS5
BRPRS4
BRPRS3
BRPRS2
BRPRS1
BRPRS0
Bit Rate PrescalerNote
0
0
0
0
0
0
2
0
0
0
0
0
1
4
0
0
0
0
1
0
6
0
0
0
0
1
1
8
.
.
.
.
.
.
.
.
.
.
.
.
.
2 x BRPRSn[5-0] + 2
.
.
.
.
.
.
.
1
1
1
0
1
0
118
1
1
1
0
1
1
120
1
1
1
1
0
0
122
1
1
1
1
0
1
124
1
1
1
1
1
0
126
1
1
1
1
1
1
128
Note: The bit rate prescaler value represents the DCAN clocks per TQ.
Setting of BRPRSn (n = 7 to 0) for TLMODE = 1:
BRPRS7 BRPRS6 BRPRS5 BRPRS4 BRPRS3 BRPRS2 BRPRS1 BRPRS0
Bit Rate Prescaler
0
0
0
0
0
0
0
0
1Note
0
0
0
0
0
0
0
1
2
0
0
0
0
0
0
1
0
3
0
0
0
0
0
0
1
1
4
.
.
.
.
.
.
.
.
.
.
.
.
.
BRPRSn[7-0] +1
.
.
.
.
.
.
.
1
1
1
1
1
0
1
0
123
1
1
1
1
1
0
1
1
124
1
1
1
1
1
1
0
0
125
1
1
1
1
1
1
0
1
126
1
1
1
1
1
1
1
0
127
1
1
1
1
1
1
1
1
128
Note: When using this setting the user needs to assure that phase segment 2 consists of at least
3 TQ. Phase segment 2 is given by the difference of DBT - SPT each measured in units of TQ.
BRPRS7 and BRPRS6 are located in the MASKC register.
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(2)
CAN Controller
Synchronization Control Registers 0 and 1
These registers define the CAN bit timing. They define the length of one data bit on the CAN bus,
the position of the sample point during the bit timing, and the synchronization jump width. The
range of resynchronization can be adapted to different CAN bus speeds or network characteristics. Additionally, some modes related to the baud rate can be selected in SYNC1 register.
SYNC0 and SYNC1 can be read or written with an 8-bit memory manipulation instruction.
RESET input sets SYNC0 to 18H.
RESET input sets SYNC1 to 0EH.
Figure 16-44:
Synchronization Control Registers 0 and 1 (1/2)
Symbol
7
6
5
4
3
2
1
0
SYNC0
SPT2
SPT1
SPT0
DBT4
DBT3
DBT2
DBT1
DBT0
Symbol
7
6
5
4
3
2
1
0
SJW1
SJW0
SPT4
SPT3
SYNC1 TLMODE SOFC
SAMP RXONLY
Address After Reset R/W
FFB9H
DBT3
DBT2
DBT1
DBT0
Other than under
0
0
1
1
1
8 x TQ
0
1
0
0
0
9 x TQ
0
1
0
0
1
10 x TQ
0
1
0
1
0
11 x TQ
0
1
0
1
1
12 x TQ
0
1
1
0
0
13 x TQ
0
1
1
0
1
14 x TQ
0
1
1
1
0
15 x TQ
0
1
1
1
1
16 x TQ
1
0
0
0
0
17 x TQ
1
0
0
0
1
18 x TQ
1
0
0
1
0
19 x TQ
1
0
0
1
1
20 x TQ
1
0
1
0
0
21 x TQ
1
0
1
0
1
22 x TQ
1
0
1
1
0
23 x TQ
1
0
1
1
1
24 x TQ
1
1
0
0
0
Other than above
292
Data Bit Time
Setting prohibited
25 x TQ
Setting prohibited
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R/W
Address After Reset R/W
The length of a data bit time is programmable via DBT[4-0].
DBT4
18H
FFBAH
0EH
R/W
Chapter 16 CAN Controller
Figure 16-44:
Synchronization Control Registers 0 and 1 (2/2)
The position of the sample point within the bit timing is defined by SPT0n through SPT4n.
SPT4
SPT3
SPT2
SPT1
SPT0
Other than under
Sample Point Position
Setting prohibited
0
0
0
0
1
2 x TQ
0
0
0
1
0
3 x TQ
0
0
0
1
1
4 x TQ
0
0
1
0
0
5 x TQ
0
0
1
0
1
6 x TQ
0
0
1
1
0
7 x TQ
0
0
1
1
1
8 x TQ
0
1
0
0
0
9 x TQ
0
1
0
0
1
10 x TQ
0
1
0
1
0
11 x TQ
0
1
0
1
1
12 x TQ
0
1
1
0
0
13 x TQ
0
1
1
0
1
14 x TQ
0
1
1
1
0
15 x TQ
0
1
1
1
1
16 x TQ
1
0
0
0
0
17 x TQ
Other than above
Setting prohibited
TLMODE
Resolution of Bit Rate Prescaler
0
1 unit of BRPRS[5-0] in BRPRS register equals 2 DCAN clocks, BRPRS[7-6]
in MASKC register are disabled (compatible to older macro versions)
1
1 unit of BRPRS[7-0] in BRPRS and MASKC register equals 2 DCAN clocks,
BRPRS[7-6] in MASKC register are enabledNote
Note: The user needs to assure that phase segment 2 (TSEG2) consists of at least 3 TQ when using
this setting. Phase segment 2 is given by the difference of DBT - SPT each measured in units of
TQ.
SJW0 and SJW1 define the synchronization jump width as specified in ISO 11898.
SJW1
SJW0
Synchronisation Jump Width
0
0
1 x TQ
0
1
2 x TQ
1
0
3 x TQ
1
1
4 x TQ
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Limits on defining the bit timing
The sample point position needs to be programmed between 3TQNote and 17TQ, which equals a
register value of 2 ≤ SPTxn ≤ 16 (n = 0, 1; x = 4 to 0).
The number of TQ per bit is restricted to the range from 8TQ to 25TQ, which equals a register
value of 7 ≤ DBTxn ≤ 24 (n = 0, 1; x = 4 to 0).
The length of phase segment 2 (TSEG2) in TQ is given by the difference of TQ per bit (DBTxn)
and the sample point position (SPTxn). Converted to register values the following condition
applies:
2 ≤ DBTxn - SPTxn ≤ 8 (n = 0, 1; x = 4 to 0).
The number of TQ allocated for soft synchronization must not exceed the number of TQ for phase
segment 2, but SJWyn may have as many TQ as phase segment 2:
SJWyn ≤ DBTxn - SPTxn - 1 (n = 0, 1; x = 4 to 0; y = 0, 1).
Note: Sample point positions of 3 TQ or 4 TQ are for test purposes only. For the minimum number of
TQ per bit time, 8TQ, the minimum sample point position is 5 TQ.
Example:
System clock:
fx
8 MHz
CAN parameter:
Baud rate
500 kBaud
Sample Point
75%
SJW
25%
At first, calculate the overall prescaler value:
fX
8 MHz
------------------------ = ----------------------------- = 16
500 KBaud
Baudrate
16 can be split as 1 x 16 or 2 x 8. Other factors can not be mapped to the registers. Only 8 and 16
are valid values for TQ per bit. Therefore the overall prescaler value realized by BRPRSn is 2 or 1
respectively.
With TLMODE = 0 the following register settings apply:
Register value
Description
Bit fields
BRPRSn = 00h
Clock selector = fx
PRMn = 00b
BRPRSx = 000000b
SYNC0n = A7h
CAN Bit in TQ = 8
DBTx = 00111b
7 < (fx/Baudrate/bit rate prescaler) < 25]
SYNC1n = 0zzz0100b sample point 75% = 6 TQ
SJW 25% = 2 TQ
SPTx = 00101b
SJWy = 01b
1 TQ equals 2 clocks & BRPRS6, 7 are disabled TLMODE = 0
z depends on the setting of:
- Number of sampling points
- Receive only function
- Use of time stamp or global time system
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With TLMODE = 1 the following register settings apply:
Register values
Description
Bit fields
BRPRSn = 00h
Clock selector = fx
PRMn = 00b
MASKCn = 00xx xxxxb
SYNC0n = 6Fh
BRPRSn = 0000 0000b
CAN Bit in TQ = 16
DBTn = 01111b
7 < (fx/Baudrate/bit rate prescaler) < 25]
SYNC1n = 1zzz 1101b sample point 75% = 12 TQ:
SPTn = 01011b
SJW 25% = 4 TQ
SJWn = 11b
1 TQ equals 1 clock, BRPRS 6, 7 are enabled
TLMODE = 1
z depends on the setting of:
- Number of sampling points
- Receive only function
- Use of time stamp or global time system
The receive-only mode can be used for baudrate detection. Different baudrate configurations can be
tested without disturbing other CAN nodes on the bus.
RXONLY
Receive Only Operation
0
Normal operation
1
Only receive operation, CAN does not activate transmit line
Differences to CAN protocol in the receive-only mode:
• The mode never sends an acknowledge, error frames or transmit messages.
• The error counters do not count.
The VALID bit in CANES reports if the DCAN interface receives any valid message.
SAMP defines the number of sample points per bit as specified in the ISO-11898.
SAMP
Bit Sampling
0
Sample receive data one time at receive point
1
Sample receive data three times and take majority decision at
sample point
SOFC works in conjunction with the SOFE and SOFSEL bits in the CAN Control Register CANC. For
detailed information please refer to the bit description of that SFR register and the time function mode.
SOFC
Caution:
Start of Frame Control
0
SOFE bit is independent from CAN bus activities
1
SOFE bit will be cleared when a message for receive message
4 is received and SOF mode is selected
CPU can read SYNC0/SYNC1 register at any time. Writing to the SYNC0/SYNC1
registers is only allowed during initialization mode. Any write to this register when
INIT is set and the initialization mode is not confirmed by the INITSTATE bit can have
unexpected behavior to the CAN bus.
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16.15 Function Control
16.15.1 Transmit Control
(1)
Transmit control register
This register controls the transmission of the DCAN-module. The transmit control register (TCR)
provides complete control over the two transmit buffers and their status. It is possible to request
and abort transmission of both buffers independently.
TCR can be set with a an 8-bit memory manipulation instruction.
RESET input sets TCR to 00H.
Figure 16-45:
Transmit Control Register (1/2)
Symbol
7
6
5
4
3
2
1
0
Address
After Reset
TCR
TXP
0
TXC1
TXC0
TXA1
TXA0
TXRQ1
TXRQ0
FFB1H
00H
R/W
R
R
R
R/W
R/W
R/W
R/W
Caution:
Don't use bit operations on this register. Also logical operations (read-modify-write)
via software may lead to unexpected transmissions. Initiating a transmit request for
buffer 1 while TXRQ0 is already set, is simply achieved by writing 02H or 82H. The
status of the bits for buffer 0 is not affected by this write operation.
TXP
Transmission Priority
0
Buffer 0 has priority over buffer 1
1
Buffer 1 has priority over buffer 0
The user defines which buffer has to be send first in the case of both request bits are set. If only one
buffer is requested by the TXRQn bits (n = 0, 1) bits, TXP bit has no influence.
TXCn (n = 0, 1) shows the status of the first transmission. It is updated when TXRQn (n = 0, 1) is
cleared.
TXAn
0
1
TXCn
Transmission Abort Flag
Write: normal operation
Read: no abort pending
Write: aborts current transmission request for this buffer n
Read: abort is pending
Transmission Complete Flag
0
Transmit was aborted / no data sent
1
Transmit was complete / abort had no effect
The TXAn bits (n = 0, 1) allow to free a transmit buffer with a pending transmit request. Setting the
TXAn bit (n = 0, 1) by the CPU requests the DCAN to empty its buffer by clearing the respective TXRQn
bit (n = 0, 1).
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Figure 16-45:
Transmit Control Register (2/2)
The TXAn bits (n = 0, 1) have a dual function:
1. The CPU can request an abort by writing a “1” into the bit.
2. The DCAN signals whether such an request is still pending. The bit is cleared at the same time
when the TXRQn bit (n = 0, 1) is cleared.
The abort process does not affect any rules of the CAN protocol. A frame already started will continue
to its end.
An abort operation can cause different results dependent on the time it is issued.
d) When an abort request is recognized by the DCAN before the start of the arbitration for transmit,
the TXCn bit (n = 0, 1) is reset showing that the buffer was not send to other nodes.
e) When the abort request is recognized during the arbitration and the arbitration is lost afterwards,
the TXCn bit (n = 0, 1) is reset showing that the buffer was not send to other nodes.
f) When the abort request is recognized during frame transmission and the transmission ends with
an error afterwards, the TXCn bit (n = 0, 1) is reset showing that the buffer was not send to other
nodes.
g) When the abort request is recognized during the frame transmission and transmission ends without error. The TXCn bit (n = 0, 1) is set showing a successful transfer of the data. I.e the abort
request was not issued.
In all cases the TXRQn bit and the TXAn bit (n = 0, 1) bit will be cleared at the end of the abort operation, when the transmit buffer is available again.
Cautions: 1. The bits are cleared when the INIT bit in CANC register is set.
2. Writing a 0 to TXAn (n = 0, 1) bit has no influence
3. Do not perform read-modify-write operations on TCR.
The TXCn bit (n = 0, 1) are updated at the end of every frame transmission or abort.
TXRQn
0
1
Transmission Request Flag
Write: no influence
Read: transmit buffer is free
Write: request transmission for buffer n
Read: transmit buffer is occupied by former transmit request
The transmit request bits are checked by the DCAN immediately before the frame is started. The order
in which the TXRQn bit (n = 0, 1) will be set does not matter as long as the first requested frame is not
started on the bus.
The TXRQn bit (n = 0, 1) have dual function:
• 1. Request the transmission of a transmit buffer.
• 2. Inform the CPU whether a buffer is available or if it is still occupied by a former transmit
request.
Setting the transmission request bit requests the DCAN to sent the buffer contents onto the bus. The
DCAN clears the bit after completion of the transmission. Completion is either a normal transfer without
error or an abort request.
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An error during the transmission does not influence the transmit request status. The DCAN will automatically retry the transfer.
Cautions: 1. The bits are cleared when the INIT bit in CANC is set. A transmission already
started will be finished but not retransmitted in case of an error.
2. Writing a 0 to TXRQ0 bit has no influence.
3. Do not use bit operations on this register.
4. Do not change data in transmit buffer when the corresponding TXRQ bit is set.
16.15.2 Receive Control
The receive message register mirrors the current status of the first 8 receive buffers. Each buffer has
one status bit in this register. This bit is always set when a new message is completely stored out of the
shadow buffer into the associated buffer. The CPU can easily find the last received message during
receive interrupt handling. The bits in this register always correspond to the DN bit in the data buffers.
They are cleared when the CPU clears the DN bit in the data buffer. The register itself is read only.
(1)
Receive message register
This register shows receptions of messages of the DCAN-module. More than one bit set is possible.
RMES can be read with a 1-bit or an 8-bit memory manipulation instruction.
RESET input sets RMES to 00H.
Figure 16-46:
Receive Message Register
Symbol
7
6
5
4
3
2
1
0
Address
After Reset
RMES
DN7
DN6
DN5
DN4
DN3
DN2
DN1
DN0
FFB2H
00H
R
R
R
R
R
R
R
R
This register is read only and it is cleared when the INIT bit in CANC register is set.
DN
Data New Bit for Message n (n = 0...7)
0
No message received on message n or CPU has cleared DN
bit in message n
1
Data received in message n that was not acknowledged by the
CPU
DN0 bit has no meaning when receive buffer 0 is configured for mask operation in the mask control
register.
DN2 bit has no meaning when receive buffer 2 is configured for mask operation in the mask control
register.
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16.15.3 Mask Control
The mask control register defines whether the DCAN compares all identifier bits or if some bits are not
used for comparison. This functionality is provided by the use of the mask information. The mask information defines for each bit of the identifier whether it is used for comparison or not. The DCAN uses a
receive buffer for this information, when it is enabled by the mask control register. In this case this buffer
is not used for normal message storage. Unused bytes can be used for application needs.
(1)
Mask control register
This register controls the mask function applied to any received message.
MASKC can be written with an 8-bit memory manipulation instruction.
RESET input sets MASKC to 00H.
Figure 16-47:
Symbol
7Note
6Note
Mask Control Register (1/2)
5
4
3
2
1
0
Address
After Reset
MASKC BRPRS7 BRPRS6
SSHT
AL
0
GLOBAL
MSK1
MSK0
FFBBH
00H
R/W
R/W
R/W
R
R/W
R/W
R/W
R/W
Note: BRPRS[7 - 6] are only enable if TLMODE is set to 1.
Caution:
This register is readable at any time. Writing to the MASKC register is only allowed
during initialization mode. Any write to this register when INIT bit is set and the
initialization mode is not confirmed by the INITSTATE bit can have unexpected
behavior to the CAN bus.
MSK0
Mask 0 Enable
0
Receive buffer 0 and 1 in normal operation
1
Receive buffer 0 is mask for buffer 1
MSK1
Mask 1 Enable
0
Receive buffer 2 and 3 in normal operation
1
Receive buffer 2 is mask for buffer 3
GLOBAL
Enable Global Mask
0
Normal operation
1
Highest defined mask is active for all following buffers
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Figure 16-47:
CAN Controller
Mask Control Register (2/2)
SSHT
AL
Function
0
x
Single shot mode disabled
1
0
Single shot mode enabled; no re-transmission when an error occurs.
Transmit message will not be queued for a second transmit request
when the arbitration was lost
1
1
Single shot mode enabled; no re-transmission when an error occurs.
Transmit message will be queued for a second transmit request when
the arbitration was lost.
BRPRS7
BRPRS6
Prescaler values
0
0
Selects 0 - 64 DCAN clocks per time quanta
0
1
Selects 65 - 128 DCAN clocks per time quanta
1
0
Selects 129 - 192 DCAN clocks per time quanta
1
1
Selects 193 - 256 DCAN clocks per time quanta
The following table shows which compare takes place for the different receive buffers. The ID in this
table always represents the ID stored in the mentioned receive buffer. The table also shows which
buffers are used to provide the mask information and therefore do not receive messages. A global mask
can be used for standard and extended frames at the same time. The frame type is only controlled by
the IDE bit of the receiving buffer.
Table 16-26:
GLOBAL MSK1 MSK0
300
Mask Operation Buffers
Receive Buffer
0
1
2
3
4-15
Operation
X
0
0
Compare
ID
Compare
ID
Compare
ID
Compare
ID
Compare
ID
Normal
0
0
1
Mask0
Compare
ID & mask0
Compare
ID
Compare
ID
Compare
ID
One mask
0
1
0
Compare
ID
Compare
ID
Mask1
Compare
ID & mask1
Compare
ID
One mask
0
1
1
Mask0
Compare
ID & mask0
Mask1
Compare
ID & mask1
Compare
ID
Two masks
1
0
1
Mask0
Compare
Compare
ID & mask0 ID & mask0
Compare
ID
& mask0
Global mask
1
1
0
Compare
ID
Compare
ID
Mask1
Compare
ID
& mask1
Two normal,
rest global mask
1
1
1
Mask0
Compare
ID & mask0
Mask1
Compare
ID
& mask1
One mask,
rest global mask
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Chapter 16 CAN Controller
Priority of receive buffers during compare
It is possible that more than one receive buffer is configured to receive a particular message. For this
case an arbitrary rule for the storage of the message into one of several matching receive buffers
becomes effective. The priority of a receive buffers depends on its type defined by the setup of the
mask register in first place and its number in second place.
The rules for priority are:
• All non-masked receive buffers have a higher priority than the masked receive buffer.
• Lower numbered receive buffers have higher priority.
Examples:
1.
2.
3.
All RX buffers are enabled to receive the same standard identifier 0x7FFH. Result: the message
with identifier 0x7FFH is stored in RX0.
In difference to the previous set up, the mask option is set for RX2. Again the message 0x7FFH is
stored in buffer in RX0.
If additionally RX0 is configured as a mask, the message will be stored in RX4.
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16.15.4 Special Functions
(1)
Redefinition control register
This register controls the redefinition of an identifier of a received buffer.
REDEF can be written with an 1-bit or an 8-bit memory manipulation instruction.
RESET input sets REDEF to 00H.
Figure 16-48:
Redefinition Control Register (1/2)
Symbol
<7>
6
5
4
3
2
1
0
Address
After Reset
REDEF
DEF
0
0
0
SEL3
SEL2
SEL1
SEL0
FFB3H
00H
R/W
R
R
R
R/W
R/W
R/W
R/W
The redefinition register provides a way to change identifiers and other control information for one
receive buffer, without disturbing the operation of the other buffers.
DEF
Redefine Permission Bit
0
Normal operation
1
Receive operation for selected message is disabled.
CPU can change definition data for this message.
This bit is cleared when INIT bit in CANC is set.
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Figure 16-48:
Redefinition Control Register (2/2)
SEL3
SEL2
SEL1
SEL0
0
0
0
0
Buffer 0 is selected for redefinition
0
0
0
1
Buffer 1 is selected for redefinition
0
0
1
0
Buffer 2 is selected for redefinition
0
0
1
1
Buffer 3 is selected for redefinition
0
1
0
0
Buffer 4 is selected for redefinition
0
1
0
1
Buffer 5 is selected for redefinition
0
1
1
0
Buffer 6 is selected for redefinition
0
1
1
1
Buffer 7 is selected for redefinition
1
0
0
0
Buffer 8 is selected for redefinition
1
0
0
1
Buffer 9 is selected for redefinition
1
0
1
0
Buffer 10 is selected for redefinition
1
0
1
1
Buffer 11 is selected for redefinition
1
1
0
0
Buffer 12 is selected for redefinition
1
1
0
1
Buffer 13 is selected for redefinition
1
1
1
0
Buffer 14 is selected for redefinition
1
1
1
1
Buffer 15 is selected for redefinition
Other than above
Buffer selection (n =0...15)
Setting prohibited
Cautions: 1. Keep special programming sequence. Failing to do so can cause inconsistent
data or loss of receive data.
2. Do not change DEF bit and SEL bit at the same time. Change SEL bit only when
DEF bit is cleared.
3. Write first SEL with DEF cleared. Write than SEL with DEF, or use bit manipulation
instruction. Only clear DEF bit by keeping SEL or use bit manipulation instruction.
Setting the redefinition bit removes the selected receive buffer from the list of possible ID hits during
identifier comparisons.
Setting the DEF bit will not have immediate effect, if DCAN is preparing to store or is already in
progress of storing a received message into the particular buffer. In this case the redefinition request is
ignored for the currently processed message.
The application should monitor the DN flag before requesting the redefinition state for a particular
buffer. A DN flag set indicates a new message that arrived or a new message that is in progress of
being stored to that buffer. The application should be prepared to receive a message immediately after
redefinition state was set. The user can identify this situation because the data new bit (DN) in the
receive buffer will be set. This is of special importance if it is used together with a mask function
because in this case the DCAN also writes the identifier part of the message to the receive buffer. Then
the application needs to re-write the configuration of the message buffer.
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16.16 Interrupt Information
16.16.1 Interrupt Vectors
The DCAN peripheral supports four interrupt sources as shown in the following table.
Table 16-27:
Function
Interrupt Sources
Source
Interrupt Flag
Error
Error counter
Overrun error
Wake up
CEIF
Receive
Received frame is valid
CRIF
Transmit buffer 0
TXRQ0 is cleared
CTIF0
Transmit buffer 1
TXRQ1 is cleared
CTIF1
16.16.2 Transmit Interrupt
The transmit interrupt is generated when all following conditions are fulfilled:
• The transmit interrupt 0 is generated when TXRQ0 bit is cleared.
• The transmit interrupt 1 is generated when TXRQ1 bit is cleared.
Clearing of these bits releases the buffer for writing a new message into it. This event can occur due to
a successful transmission or due to an abort of a transmission. Only the DCAN can clear this bit. The
CPU can only request to clear the TXRQn bit by setting the ABORTn bit (n = 0, 1).
16.16.3 Receive Interrupt
The receive interrupt is generated when all of the following conditions are fulfilled:
• CAN protocol part marks received frame valid.
• The received frame passes the acceptance filter. In other words, a message buffer with an
identifier/mask combination fits to the received frame.
• The memory access engine successfully stored data in the message buffer.
• The message buffer is marked for interrupt generation with ENI bit set.
The memory access engine can delay the interrupt up to the 7th bit of the next frame because of its
compare and store operations.
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16.16.4 Error Interrupt
The error interrupt is generated when any of the following conditions are fulfilled:
• Transmission error counter (BOFF) changes its state.
• Transmission error counter status (TECS) changes its state.
• Reception error counter status (RECS) changes its state.
• Overrun during RAM access (OVER) becomes active.
• The wake-up condition (WAKE) becomes active.
The wake-up condition activates an internal signal to the interrupt controller. In order to receive further
error interrupts generated by other conditions, the CPU needs to clear the WAKE bit in CANES register
every time a wake-up condition was recognized.
No further interrupt can be detected by the CPU as long as the WAKE bit is set.
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16.17 Influence of the standby Function of the CAN Controller
16.17.1 CPU Halt Mode
The CPU halt mode is possible in conjunction with DCAN Sleep mode.
16.17.2 CPU Stop Mode
The DCAN stops any activity when its clock supply stops due to a CPU Stop mode issued. This may
cause an erroneous behaviour on the CAN bus. Entering the CPU Stop Mode is not allowed when the
DCAN is in normal mode, i.e. online to the CAN bus.
The DCAN will reach an overrun condition, when it receives clock supply again.
CPU Stop mode is possible when the DCAN was set to initialization state, sleep mode or stop mode
beforehand. Note that the CPU will not be started again if the DCAN Stop mode was entered previously.
16.17.3 DCAN Sleep Mode
The DCAN Sleep mode is intended to lower the power consumption during phases where no communication is required.
The CPU requests the DCAN Sleep mode. The DCAN will signal with the WAKE bit, if the request was
granted or if it is not possible to enter the sleep mode due to ongoing bus activities.
After a successful switch to the DCAN Sleep mode, the CPU can safely go into halt, watch or stop
mode. However, the application needs to be prepared that the DCAN cancels the sleep mode any time
due to bus activities. If the wake-up interrupt is serviced, the CPU Stop mode has not to be issued.
Otherwise the CPU will not be released from CPU Stop mode even when there is ongoing bus activity.
The wake-up is independent from the clock. The release time for the CPU Stop mode of the device is of
no concern because the DCAN synchronizes again to the CAN bus after clock supply has started.
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The following example sketches the general approach on how to enter the DCAN Sleep mode. Note
that the function may not return for infinite time when the CAN bus is busy. The user may apply time out
controls to avoid excessive run-times.
Code example:
DCAN_Sleep_Mode(void){
CANES = 0x02;
CANC = 0x04
while (CANES & 0x02)
{
CANES = 0x02;
CANC = 0x04;
}
}
// clear Wake bit
// request DCAN Sleep mode
// check if DCAN Sleep mode was accepted
// try again to get DCAN asleep
The following code example assures a safe transition into CPU Stop mode for all timing scenarios of a
suddenly occurring bus activity. The code prevents that the CPU gets stuck with its oscillator stopped
despite CAN bus activity.
Code example:
........
//any application code
DCAN_Sleep_Mode;
//request and enter DCAN sleep mode
........
//any application code
DI();
//disable interrupts
Note
NOP;
NOP;
if (wakeup_interrupt_occurred == FALSE)
// the variable wakeup_interrupt occurred
// needs to be initialized at system reset
// and it needs to be set TRUE when servicing
// the wake-up interrupt.
{
CPU_STOP;
//enter CPU Stop mode
}
NOP:Note
NOP:
NOP;
EI();
// enable interrupts
.........
// resume with application code
Note: The interrupt acknowledge needs some clock cycles (depends on host core). In order to prevent
that the variable wakeup_interrupt_occurred is already read before DI(); becomes effective
some NOP-instruction have to be inserted. As well the number of NOP-instructions after the
CPU Stop instruction is dependent on the host core. The given example is tailored for 78K0.
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16.17.4 DCAN Stop Mode
The CPU requests this mode from DCAN. The procedure equals the request for DCAN Sleep mode.
The DCAN will signal with the WAKE bit, if the request was granted or if it is not possible to enter the
DCAN Stop mode due to ongoing bus activities.
After a successful switch to the DCAN Stop mode, the CPU can safely go into halt, watch or stop mode
without any precautions. The DCAN can only be woken up by the CPU. Therefore the CPU needs to
clear the SLEEP bit in the CANC register.
This mode reduces the power consumption of the DCAN to a minimum.
Code example:
DCAN_Stop_Mode(void){
CANES = 0x02;
CANC = 0x06
while (CANES & 0x02)
{
CANES = 0x02;
CANC = 0x06;
}
}
308
// clear Wake bit
// request DCAN Stop mode
// check if DCAN Stop mode was accepted
// try again to get DCAN into stop mode
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16.18 Functional Description by Flowcharts
16.18.1 Initialization
Figure 16-49:
RESET
Initialization Flow Chart
Software Init
set INIT=1 in CANC
set
BRPRS
SYNC0/1
Initilialize
message and mask
data
set
MCNT
MASKC
Clear INIT=0 in CANC
Write for
BRPRS
SYNC0/1
MCNT
MASKC
is now disabled
End Initialization
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16.18.2 Transmit Preparation
Figure 16-50:
Transmit Preparation
Transmit
=1
TXRQn
Wait or
Abort or
Try other Buffer
=0
Write data
Select Priority
TXP
Set
TXRQn = 1
End Transmit
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16.18.3 Abort Transmit
Figure 16-51:
Transmit Abort
Transmission Abort
Set
TXAn
=1
TXRQn
=0
=0
TXCn
=1
Transmit
was successful
before
ABORT
Transmit
was aborted
End Transmission
Abort
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16.18.4 Handling by the DCAN
Figure 16-52:
Handling of Semaphore Bits by DCAN-Module
Data Storage
Warns that data
will be changed
Write
DN = 1
MUC = 1
Write
Identifier
bytes
Only for buffers that
are declared for
mask operation
Write
Data
bytes
Write
DN = 1
MUC = 0
DLC
Data is changed.
MUC = 0 signals
stable data
End Data Storage
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16.18.5 Receive Event Oriented
Figure 16-53:
Receive with Interrupt, Software Flow
Receive Interrupt
scans
RMES or
DN bits
to find message
Uses CLR1
Command
Clear
DN bit
No
read or process
data
DN = 0
AND
MUC = 0
Data was changed
by CAN during the
processing
Yes
Clear
Interrupt
End Receive
interrupt
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16.18.6 Receive Task Oriented
Figure 16-54:
Receive, Software Polling
Receive Polled
Uses CLR1
command
Clear
DN bit
Read or process
data
DN = 0
AND
MUC = 0
No
Data was changed
by CAN during the
processing
Yes
End Receive Polled
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Chapter 17
LCD Controller / Driver
17.1 LCD Controller/Driver Functions
The functions of the LCD controller/driver incorporated in the µPD780828A Subseries are listed below.
(1)
(2)
Automatic output of segment signals and common signals is possible by automatic reading of the
display data memory.
Display mode
• 1/4 duty (1/3 bias)
(3)
(4)
Any of four frame frequencies can be selected in each display mode.
Maximum of 28 segment signal outputs (S0 to S27); 4 common signal outputs (COM0 to COM3).
All segment outputs can be switched to input/output ports.
P47/S0 to P40/S7 is byte-wise switchable. P87/S8 to P80/S15, P97/S16 to P90/S23 and P37/S24
to P34/S27 are bitwise switchable.
The maximum number of displayable pixels is shown in Table 17-1.
Table 17-1:
Maximum Number of Display Pixels
Bias Method
Time Division
Common Signals Used
Maximum Number of Display Pixels
1/3
4
COM0 to COM3
112 (28 segments x 4 commons)
17.2 LCD Controller/Driver Configuration
The LCD controller/driver consists of the following hardware.
Table 17-2:
Item
LCD Controller/Driver Configuration
Configuration
Segment signals: 28
Display outputs
Segment signal with alternate function: 28
Common signals: 4 (COM0 to COM3)
Control registers
LCD display mode register (LCDM)
LCD display control register (LCDC)
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Figure 17-1:
LCD Controller/Driver Block Diagram
Internal bus
Display data memory
FA7FH
76543210
LCD display control
register (LCDC)
LCD display mode register (LCDM)
FA68H
76543210
FA67H
76543210
F A64H
76543210
LIPS
LCDON LCDM6 LCDM5 LCDM4
Port function register (PFn)
(n = 3, 4, 8, 9)
3
LCD clock selector
f LCD
3210
selector ... ... ...
3210
selector
3210
... ... ...
selector
... ... ...
3210
selector
Timing controller
... ... ...
Segment selector
Note ... ... ... ... ...
P90 output
buffer
Note ... ... ...
P77 output
buffer
S0/P47 ... ... ... ... S23/P90
Remark:
Note
LCD driver voltage controller
Common driver
P50 output
buffer
... ... ... S27/P34 COM0 COM1 COM2 COM3
S24/P37
V LCD
Segment driver
Figure 17-2:
14
fx/2
LCD Clock Select Circuit Block Diagram
Prescaler
f LCD /2
3
f LCD /2
2
f LCD /2
Selector
P47 output
buffer
Note
LCDCL
f LCD
3
LCDM6 LCDM5 LCDM4
LCD display mode register
Internal bus
Remarks: 1. LCDCL: LCD clock
2. fLCD: LCD clock frequency
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17.3 LCD Controller/Driver Control Registers
The LCD controller/driver is controlled by the following two registers.
• LCD display mode register (LCDM)
•
(1)
LCD display control register (LCDC)
LCD display mode register (LCDM)
This register enables/disables the LCD and selects the LCD clock.
LCDM is set with a 1-bit or 8-bit memory manipulation instruction.
RESET input clears LCDM to 00H.
Figure 17-3:
Symbol
7
6
5
LCD Display Mode Register (LCDM) Format
4
LCDM LCDON LCDM6 LCDM5 LCDM4
LCDON
2
1
0
Address After Reset R/W
0
0
0
0
FF90H
00H
R/W
LCD Enable/Disable
0
Display off (all segment outputs are non-select signal outputs)
1
Display on
LCDM6
LCDM5
LCDM4
LCD Clock Selection (fX = 8.00 MHz)
0
0
0
fX/217 (61 Hz)
0
0
1
fX/216 (122 Hz)
0
1
0
fX/215 (244 Hz)
0
1
1
fX/214 (488 Hz)
Other than above
Remark:
3
Setting prohibited
fX = Main system clock oscillation frequency (at 8.00 MHz)
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(2)
LCD display control register (LCDC)
This register sets cutoff of the current flowing to split resistors for LCD drive voltage generation
and switchover between segment output and input/output port functions.
LCDC is set with a 1-bit or 8-bit memory manipulation instruction.
RESET input clears LCDC to 00H.
Figure 17-4:
LCD Display Control Register (LCDC) Format
Symbol
7
6
5
4
3
2
1
0
LCDC
1
0
0
0
0
0
0
LIPS
LIPS
Caution:
Address After Reset R/W
FF92H
00H
R/W
LCD Driving Power Supply Selection
0
Does not supply power to LCD
1
Supplies power to LCD from VDD pin
Set bit 7 to 1 and bit 1 to bit 6 to 0.
17.4 LCD Controller/Driver Settings
LCD controller/driver settings should be performed as shown below.
<1>
<2>
<3>
<4>
Set the initial value in the display data memory (FA64H to FA7FH).
Set the pins to be used as segment outputs in port function registers (PF3, PF4, PF8 and PF9).
Set the LCD power supply in the LCD display control register (LCDC).
Set the LCD clock in the LCD display mode register (LCDM).
Next, set data in the display data memory according to the display contents.
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Chapter 17
LCD Controller / Driver
17.5 LCD Display Data Memory
The LCD display data memory is mapped onto addresses FA64H to FA7FH. The data stored in the
LCD display data memory can be displayed on an LCD panel by the LCD controller/driver.
Figure 17-5 shows the relationship between the LCD display data memory contents and the segment
outputs/common outputs.
Any area not used for display can be used as normal RAMNote.
Figure 17-5:
Relationship between LCD Display Data Memory Contents
and Segment/Common Outputs
b7
Address
b6
b5
b4
b3
b2
b1
b0
FA7FH
S0/P47
FA7CH
S1/P46
FA7DH
S2/P45
FA7CH
S3/P44
FA66H
S25/P36
FA65H
S26/P35
FA64H
S27/P34
COM3
COM2
COM1
COM0
Caution:
The higher 4 bits of the LCD display data memory do not incorporate memory. Be
sure to set them to 0.
Remark:
The data of S0 is stored at the highest address in the LCD display data memory.
Note: RESET clears the LCD Display Data Memory to 00H.
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Chapter 17 LCD Controller / Driver
17.6 Common Signals and Segment Signals
An individual pixel on an LCD panel lights when the potential difference of the corresponding common
signal and segment signal reaches or exceeds a given voltage (the LCD drive voltage VLCD). The light
goes off when the potential difference becomes VLCD or lower.
As an LCD panel deteriorates if a DC voltage is applied in the common signals and segment signals, it
is driven by AC voltage.
(1)
Common signals
For common signals, the selection timing order is as shown in Table 17-3, and operations are
repeated with these as the cycle.
Table 17-3:
COM Signals
COM Signal
COM0
COM1
COM2
COM3
Time Division
4-Time Division
(2)
Segment signals
Segment signals correspond to a 28-byte LCD display data memory (FA64H to FA7FH). Each display data memory bit 0, bit 1, bit 2, and bit 3 is read in synchronization with the COM0, COM1,
COM2 and COM3 timings respectively, and if the value of the bit is 1, it is converted to the selection voltage. If the value of the bit is 0, it is converted to the non-selection voltage and send to a
segment pin (S0 to S27) (S27 to S0 have an alternate function as input/output port pins).
Consequently, it is necessary to check what combination of front surface electrodes (corresponding to the segment signals) and rear surface electrodes (corresponding to the common signals) of
the LCD panel to be used to form the display pattern. Then write a bit data corresponding on a
one-to-one basis with the pattern to be displayed.
Bits 4 to 7 are fixed at 0.
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Chapter 17
(3)
LCD Controller / Driver
Common signal and segment signal output waveforms
The voltages shown in Table 17-4 are output in the common signals and segment signals.
The ±VLCD ON voltage is only produced when the common signal and segment signal are both at
the selection voltage; other combinations produce the OFF voltage.
Table 17-4:
Segment
Common
LCD Drive Voltage
Select Level
Non-Select Level
VSS1, VLC0
VLC1, VLC2
Select Level
VLC0,
VSS1
-VLCD, +VLCD
-1/3 VLCD, +1/3 VLCD
Non-Select
Level
VLC2,
VLC1
-1/3 VLCD, +1/3 VLCD
-1/3 VLCD, +1/3 VLCD
Figure 17-6 shows the common signal waveform, and Figure 17-7 shows the common signal and
segment signal voltages and phases.
Figure 17-6:
Common Signal Waveform
VLC0
COMn
VLC1
VLC2
VSS
(Divided by 4)
VLCD
TF = 4 x T
Remark:
T : One LCDCL cycle
TF : Frame frequency
Figure 17-7:
Common Signal and Segment Signal Voltages and Phases
Selected
Not selected
VLC0
VLC1
VLC2
Common signal
VLCD
VSS
VLC0
VLC1
VLC2
Segment signal
VLCD
VSS
T
Remark:
T
T
: One LCDCL cycle
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Chapter 17 LCD Controller / Driver
17.7 Supplying LCD Drive Voltage VLC0, VLC1, and VLC2
The µPD780828A Subseries have a split resistor to create an LCD drive voltage, and the drive voltage
is fixed to 1/3 bias.
To supply various LCD drive voltages, internal VDD or external VLCD supply voltage can be selected.
Table 17-5:
LCD Drive Voltage Supply
Bias Method
LCD Drive Voltage
1/3 Bias Method
VLC0
VLC0
VLC1
2/3 VLC0
VLC2
1/3 VLC0
Figure 17-8 shows an example of supplying an LCD drive voltage from an internal source according to
Table 17-5.
Figure 17-8:
Example of Connection of LCD Drive Power Supply (1/2)
(a) To supply LCD drive voltage from VDD
VDD
LIPS
(= 1)
P-ch
Leave V LCD pin open
V LC0
R
V LC1
VLCD
R
V LC2
R
V SS
V SS
V LCD = VDD
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Chapter 17
Figure 17-8:
LCD Controller / Driver
Example of Connection of LCD Drive Power Supply (2/2)
(b) To supply LCD drive voltage from external source
VDD
LIPS
(= 0)
VDD
r1
P-ch
V LCD
r2
VLC0
VSS
R
VLC1
VLCD
R
VLC2
R
VSS
VSS
VLCD =
3R r 2
3R r 2 + 3R r 1 + r 1 r 2
x VDD
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Chapter 17 LCD Controller / Driver
17.8 Display Mode
17.8.1 4-time-division display example
Figure 17-10, “4-Time-Division LCD Panel Connection Example,” on page 325 shows the relationship
between a 4-time-division type 10-digit LCD panel and the display pattern shown in Figure 17-9, “4Time-Division LCD Display Pattern and Electrode Connections,” on page 324 and the µPD780828A
Subseries segment signals (S0 to S19) in conjunction with common signals (COM0 to COM3). The display example is “1234567890”. The display data memory contents (addresses FA7FH to FA6CH) correspond to this.
An explanation is given here taking the example of the 5th digit “6” (➏). In accordance with the display
pattern in Figure 17-9, “4-Time-Division LCD Display Pattern and Electrode Connections,” on page 324,
selection and non-selection voltages must be send to pins S8 and S9 as shown in Table 17-6 at the
COM0 to COM3 common signal timings.
Table 17-6:
Selection and Non-Selection Voltages (COM0 to COM3)
Segment
S8
S9
COM0
S
S
COM1
NS
S
COM2
S
S
COM3
NS
S
Common
Remark:
S: Selection, NS: Non-selection
From this, it can be seen that 0101 (COM0 is LSB) must be prepared in the display data memory
(address FA77H) corresponding to S8.
Examples of the LCD drive waveforms between S8 and the COM0 and COM1 signals are shown in Figure 17-11, “4-Time-Division LCD Drive Waveform Examples (1/3 Bias Method),” on page 326 (for the
sake of simplicity, waveforms for COM2 and COM3 have been omitted). When S8 carries the selection
voltage at the COM0 selection timing, it can be seen that the +VLCD/–VLCD AC square wave, which is
the LCD illumination (ON) level, is generated.
Figure 17-9:
4-Time-Division LCD Display Pattern and Electrode Connections
S2n
COM0
COM1
COM2
COM3
S2n + 1
Remark:
324
n = 0 to 9
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Chapter 17
Figure 17-10:
4-Time-Division LCD Panel Connection Example
Timing strobes
COM3
COM2
COM1
0
0
1
0
0
0
1
0
0
0
LCD panel
BIT2
BIT3
0
1
BIT1
0
1
1 0 1
0
S17
S18
0
1
0
0
1
S15
1 0 0
0
1
1
S13
S14
1
S12
1
S10
1
0 1
S9
1
1 1
1
0
1
1
1
1
1
0
1
1
0
1
1
1
1
S8
1
D
FA6CH
S7
S11
S19
0
E
1
1
1
FA6FH
S6
1
1
0
S5
0 1 0
2
S3
S4
1 1 1
3
S1
S2
0
4
S0
1
5
0
6
1
1
1
7
1
8
0
9
1 1
A
1
B
0
C
0 1
D
0
E
1
BIT0
COM0
FA7FH
Data memory address
LCD Controller / Driver
S16
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Chapter 17 LCD Controller / Driver
Figure 17-11:
4-Time-Division LCD Drive Waveform Examples (1/3 Bias Method)
TF
VLC0
VLC1
COM0
VLC2
VSS
VLC0
VLC1
COM1
VLC2
VSS
VLC0
VLC1
COM2
VLC2
VSS
VLC0
VLC1
COM3
VLC2
VSS
VLC0
VLC1
S8
VLC2
VSS
+VLCD
+1/3VLCD
0
COM0 to S8
–1/3VLCD
–VLCD
+VLCD
+1/3VLCD
0
COM1 to S8
–1/3VLCD
–VLCD
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Chapter 17
LCD Controller / Driver
17.9 Cautions on Emulation
To perform debugging with an in-circuit emulator, the LCD timer control register (LCDTM) must be set.
LCDTM is a register used to figure the I/O board (IE-78K0-NS-P04) appropriately.
17.9.1 LCD timer control register (LCDTM)
LCDTM is a write-only register that controls supply of the LCD-clock. Unless LCDTM is set, the LCD
controller/ driver does not operate. Therefore, set bit 1 (TMC21) of LCDTM to 1 when using the LCD
controller/driver.
Figure 17-12:
LCD Timer Control Register (LCDTM) Format
Symbol
7
6
5
4
3
2
1
0
LCDTM
1
0
0
0
0
0
TMC21
0
TMC21
Address After Reset R/W
FF93H
00H
W
LCD Clock Supply Control
0
LCD controller/driver stop mode (supply of LCD clock is stopped)
1
LCD controller/driver operating mode (supply of LCD clock is enabled)
Cautions: 1. LCDTM is a special register that must be set when debugging is performed with
an in-circuit emulator. Even if this register is used, the operation of the
µPD780828A Subseries is not affected. However, delete the instruction that
manipulates this register from the program at the final stage of debugging.
2. Bits 7 to 2, and bit 0 must be set to 0.
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[MEMO]
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Chapter 18
Sound Generator
18.1 Sound Generator Function
The sound generator has the function to operate an external speaker. The following two signals are
supplied by the sound generator.
(1)
Basic cycle output signal (with/without amplitude)
A buzzer signal with a variable frequency in a range of 0.5 to 3.8 KHz (at fX = 8.38 MHz) can be
created. The amplitude of the basic cycle output signal can be varied by ANDing the basic cycle
output signal with the 7-bit-resolution PWM signal, to achieve control of the volume.
(2)
Amplitude output signal
A PWM signal with a 7-bit resolution for variable amplitude can be generated independently.
Figure 19-1 shows the sound generator block diagram and Figure 19-2 shows the concept of each signal.
Figure 18-1:
Sound Generator Block Diagram
Inter nal bus
Sound generator control register (SGCR)
TCE
SGOB SGCL2 SGCL1 SGCL0
SGCL0
Selector
fSG1
Prescaler
1/2
Selector
fX
2
fSG2
5-bit counter
Comparator
PWM amplitude
1/2
Selector
Clear
SGO/
SGOF/
P60
S
Q
Comparator
4
SGBR3 SGBR2 SGBR1 SGBR0
Sound generator
buzzer control
register (SGBR)
PCL/
SGOA/
P61
R
7
SGOB
SGAM6 SGAM5 SGAM4 SGAM3 SGAM2 SGAM1 SGAM0
Sound generator
amplitude register
(SGAM)
P61 output
latch
Clock output
control circuit (PCL)
PM61
Port mode
register 6
(PM6)
Inter nal bus
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Chapter 18
Figure 18-2:
Sound Generator
Concept of Each Signal
Basic cycle output SGOF
(without amplitude)
Amplitude output SGOA
Basic cycle output SGO
(with amplitude)
18.2 Sound Generator Configuration
The sound generator consists of the following hardware.
Table 18-1:
Sound Generator Configuration
Item
Configuration
Counter
8 bits x 1, 5 bits x 1
SG output
SGO/SGOF (with/without append bit of basic cycle output)
SGOA (amplitude output)
Control register
Sound generator control register (SGCR)
Sound generator buzzer control register (SGBR)
Sound generator amplitude register (SGAM)
18.3 Sound Generator Control Registers
The following three types of registers are used to control the sound generator.
• Sound generator control register (SGCR)
• Sound generator buzzer control register (SGBR)
• Sound generator amplitude control register (SGAM)
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Chapter 18
(1)
Sound Generator
Sound generator control register (SGCR)
SGCR is a register which sets up the following four types.
• Controls sound generator output
• Selects output of sound generator
• Selects sound generator input frequency fSG1
• Selects 5-bit counter input frequency fSG2
SGCR is set with a 1-bit or 8-bit memory manipulation instruction.
RESET input clears SGCR to 00H.
Figure 18-3 shows the SGCR format.
Figure 18-3:
Sound Generator Control Register (SGCR) Format (1/2)
Symbol
7
6
5
4
3
SGCR
TCE
0
0
0
SGOB
TCE
2
1
0
SGCL2 SGCL1 SGCL0
Address After Reset R/W
FFC0H
00H
R/W
Sound Generator Output Selection
0
Timer operation stopped
SGOF/SGO and SGOA for low-level output
1
Sound generator operation
SGOF/SGO and SGOA for output
Caution:
Before setting the TCE bit, set all the other bits.
Remark:
SGOF :
SGO :
SGOA :
Basic cycle signal (without amplitude)
Basic cycle signal (with amplitude)
Amplitude signal
SGOB
Sound Generator Output Selection
0
Selects SGOF and SGOA outputs
1
Selects SGO and PCL outputs
SGCL2
SGCL1
5-Bit Counter Input Frequency fSG2 Selection
0
0
fSG2 = fSG1/25
0
1
fSG2 = fSG1/26
1
0
fSG2 = fSG1/27
1
1
fSG2 = fSG1/28
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Chapter 18
Figure 18-3:
Sound Generator
Sound Generator Control Register (SGCR) Format (2/2)
SGCL0
Sound Generator Input Frequency Selection
0
fSG1 = fX/2
1
fSG1 = fX
Cautions: 1. When rewriting SGCR to other data, stop the timer operation (TCE = 0)
beforehand.
2. Bits 4 to 6 must be set to 0.
Table 18-2:
Maximum and Minimum Values of the Buzzer Output Frequency
Maximum and Minimum Values of Buzzer Output
SGCL2
SGCL1
SGCL0
fSG2
fX = 8 MHz
fX = 8.38 MHz
Max. (KHz)
Min. (KHz)
Max. (KHz)
Min. (KHz)
3.677
1.953
3.851
2.046
0
0
0
fSG1/26
0
0
1
fSG1/25
7.354
3.906
7.702
4.092
0
1
0
fSG1/27
1.838
0.976
1.926
1.024
0
1
1
fSG1/26
3.677
1.953
0.481
2.046
1
0
0
fSG1/28
0.919
0.488
0.963
0.512
1
0
1
fSG1/27
1.838
0.976
1.926
1.024
1
1
0
fSG1/29
0.460
0.244
0.481
0.256
1
1
1
fSG1/28
0.919
0.488
0.963
0.512
The sound generator output frequency fSG can be calculated by the following expression.
fSG = 2 (SGCL0 – SGCL1 – 2 × SGCL2 – 7) × {fX / (SGBR + 17)}
Substitute 0 or 1 for SGCL0 to SGCL2 in the above expression. Substitute a decimal value to SGBR.
For fX = 8 MHz, SGCL0 to SGCL2 is (1, 0, 0), and SGBR0 to SGBR3 is (1, 1, 1, 1), SGBR = 15, then
fSG is retrieved as
fSG
332
= 2 (1 – 0 – 2 × 0 – 7) × {fX / (15 + 17)}
= 3.906 KHz
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Chapter 18
(2)
Sound Generator
Sound generator buzzer control register (SGBR)
SGBR is a register that sets the basic frequency of the sound generator output signal.
SGBR is set with an 8-bit memory manipulation instruction.
RESET input clears SGBR to 00H.
Figure 18-4 shows the SGBR format.
Figure 18-4:
Sound Generator Buzzer Control Register (SGBR) Format
Symbol
7
6
5
4
SGBR
0
0
0
0
SGBR3
SGBR2
SGBR1
3
2
1
0
Address After Reset R/W
SGBR3 SGBR2 SGBR1 SGBR0
SGBR0
FFC2H
00H
R/W
Buzzer Output Frequency (KHz) Note
fX = 8 MHz)
fX = 8.38 MHz)
0
0
0
0
3.677
3.851
0
0
0
1
3.472
3.637
0
0
1
0
3.290
3.446
0
0
1
1
3.125
3.273
0
1
0
0
2.976
3.117
0
1
0
1
2.841
2.976
0
1
1
0
2.717
2.847
0
1
1
1
2.604
2.728
1
0
0
0
2.500
2.619
1
0
0
1
2.404
2.518
1
0
1
0
2.315
2.425
1
0
1
1
2.232
2.339
1
1
0
0
2.155
2.258
1
1
0
1
2.083
2.182
1
1
1
0
2.016
2.112
1
1
1
1
1.953
2.046
Note: Output frequency where SGCL0, SGCL1, and SGCL2 are 0, 0, and 0.
Cautions: 1. When rewriting SGBR to other data, stop the timer operation (TCE = 0)
beforehand.
2. Bits 4 to 7 must be set to 0.
(3)
Sound generator amplitude register (SGAM)
SGAM is a register that sets the amplitude of the sound generator output signal.
SGAM is set with an 8-bit memory manipulation instruction.
RESET input clears SGAM to 00H.
Figure 18-5 shows the SGAM format.
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Chapter 18
Figure 18-5:
Symbol
7
SGAM
0
6
Sound Generator
Sound Generator Amplitude Register (SGAM) Format
5
4
3
2
1
0
SGAM6 SGAM5 SGAM4 SGAM3 SGAM2 SGAM1 SGAM0
Address After Reset R/W
FFC1H
00H
SGAM6
SGAM5
SGAM4
SGAM3
SGAM2
SGAM1
SGAM0
Amplitude
0
0
0
0
0
0
0
0/128
0
0
0
0
0
0
1
2/128
0
0
0
0
0
1
0
3/128
0
0
0
0
0
1
1
4/128
0
0
0
0
1
0
0
5/128
0
0
0
0
1
0
1
6/128
0
0
0
0
1
1
0
7/128
0
0
0
0
1
1
1
8/128
0
0
0
1
0
0
0
9/128
0
0
0
1
0
0
1
10/128
0
0
0
1
0
1
0
11/128
0
0
0
1
0
1
1
12/128
0
0
0
1
1
0
0
13/128
0
0
0
1
1
0
1
14/128
0
0
0
1
1
1
0
15/128
0
0
0
1
1
1
1
16/128
0
0
1
0
0
0
0
17/128
0
0
1
0
0
0
1
18/128
0
0
1
0
0
1
0
19/128
0
0
1
0
0
1
1
20/128
0
0
1
0
1
0
0
21/128
0
0
1
0
1
0
1
22/128
0
0
1
0
1
1
0
23/128
0
0
1
0
1
1
1
24/128
0
0
1
1
0
0
0
25/128
0
0
1
1
0
0
1
26/128
0
0
1
1
0
1
0
27/128
0
0
1
1
0
1
1
28/128
0
0
1
1
1
0
0
29/128
0
0
1
1
1
0
1
30/128
0
0
1
1
1
1
0
31/128
1
1
1
1
1
1
1
128/128
¦
R/W
¦
Cautions: 1. When rewriting the contents of SGAM, the timer operation does not need to be
stopped. However, note that a high level may be output for one period due to
rewrite timing.
2. Bit 7 must be set to 0.
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Chapter 18
Sound Generator
18.4 Sound Generator Operations
18.4.1 To output basic cycle signal SGOF (without amplitude)
Select SGOF output by setting bit 3 (SGOB) of the sound generator control register (SGCR) to “0”.
The basic cycle signal with a frequency specified by the SGCL0 to SGCL2 and SGBR0 to SGBR3 is
output.
At the same time, the amplitude signal with an amplitude specified by the SGAM0 to SGAM6 is output
from the SGOA pin.
Figure 18-6:
Sound Generator Output Operation Timing
n
n
n
n
n
n
Timer
Comparator 1
coincidence
SGOF
SGOA
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Chapter 18
Sound Generator
18.4.2 To output basic cycle signal SGO (with amplitude)
Select SGO output by setting bit 3 (SGOB) of the sound generator control register (SGCR) to “1”.
The basic cycle signal with a frequency specified by the SGCL0 to SGCL2 and SGBR0 to SGBR3 is
output.
When SGO output is selected, the SGOA pin can be used as a PCL output (clock output) or I/O port
pin.
Figure 18-7:
Sound Generator Output Operation Timing
n
n
n
n
Timer
Comparator 1
coincidence
SGOF
SGOA
SGO
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n
n
Chapter 19
Meter Controller / Driver
19.1 Meter Controller/Driver Functions
The meter controller/driver is a function to drive a stepping motor for external meter control or cross coil.
• Can set pulse width with a precision of 8 bits
• Can set pulse width with a precision of 8 + 1 bits with 1-bit addition function
• Can drive up to four 360° type meters
Figure 19-1 shows the block diagram of the meter controller/driver.
Figure 19-2 shows 1-bit addition circuit block diagram.
Figure 19-1:
Meter Controller/Driver Block Diagram
Internal Bus
Timer mode control
register (MCNTC)
fx
fx/8
fx/16
fx/64
fx/128
fx/256
fx/512
TM52out
Selector
PCS
Selector
Port mode control
register (PMC)
PCE
MODn
8-bit timer register
MODn
OVF
ENn
ENn
fx/2
fcc
S
SMn1(sin+)
Q
Compare register
(MCMPn0)
1-bit addition circuit
Output control circuit
SMn2(sin-)
R
MODn
ENn
S
SMn3(cos+)
Q
Compare register
(MCMPn1)
1-bit addition circuit
2
SMCL2 SMCL1 SMCL0
R
Output control circuit
SMn4(cos-)
2
TENn ADBn1 ADBn0 DIRn1 DIRn0
Compare control
register n (MCMPCn)
Meter C/D clock
selection (SMSWI)
Internal Bus
Remark:
n = 1 to 4
The meter controller/driver is a peripheral to control/drive up to four external meters (stepper motor/
cross coil motors).
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Chapter 19
Figure 19-2:
Meter Controller / Driver
1-bit Addition Circuit Block Diagram
OVF
Compare register
(MCMPnm)
Selector
S
S
Q
R
Q
fCC
2
ADBn1 ADBn0
Compare control register (MCMPCn)
Internal bus
Remark:
n = 1 to 4,
m = 0, 1
19.2 Meter Controller/Driver Configuration
The meter controller/driver consists of the following hardware.
Table 19-1: Meter Controller/Driver Configuration
Item
Remark:
338
Configuration
Timer
Free-running up counter (SMCNT): 1 channel
Register
Compare register (MCMPn1, MCMPn0): 8 channels
Control registers
Timer mode control register (MCNTC)
Compare control register n (MCMPCn)
Port mode control register (PMC)
Pulse control circuit
1-bit addition circuit/output control circuit
n = 1 to 4
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Chapter 19
(1)
Meter Controller / Driver
Free running up counter (SMCNT)
MCNT is an 8-bit free running counter. It is also a register that executes an increment at the rising
edge of the input clock.
A PWM pulse with a resolution of 8 bits can be created. The duty factor can be set in a range
of 0 to 100%.
The count value is cleared in the following cases.
• When RESET signal input
• When counter stops (PCE = 0)
(2)
Compare register n0 (MCMPn0)
MCMPn0 is an 8-bit register that can rewrite a complete value according to the specification
by bit 4 (TENn) of the compare control register n (MCMPCn).
The values of these registers are cleared to 00H at RESET. The hardware is cleared to 0 by
RESET.
MCMPn0 is a register that supports read/write only for 8-bit access instructions.
MCMPn0 continuously compares its value with the SMCNT value. When the two values match, a
match signal on the sin side of the meter n is generated.
(3)
Compare register n1 (MCMPn1)
MCMPn1 is an 8-bit register that can rewrite compare values through specification of bit 4 (TENn)
of Compare control register n (MCMPCn).
RESET input sets this register to 00H and clears hardware to 0. MCMPn1 is a register that supports read/write only for 8-bit access instructions. MCMPn1 compares its value with the SMCNT
value. When the two values match, a match signal on cos side of the meter n is generated.
(4)
1-bit addition circuit
The 1-bit addition circuit repeats 1-bit addition/non-addition to the PWM output alternately upon
MCNT overflow, and enables the state of the PWM output between the current compare value and
the next compare value. This circuit is controlled by bits 2 and 3 (ADBn0, ADBn1) of the MCMPCn
register.
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(5)
Meter Controller / Driver
Output control circuit
This circuit consists of a Pch and Nch drivers and can drive a meter in H bridge configuration by
connecting a coil. When a meter is driven in half bridge configuration, the unused pins can be
used as normal output port pins.
The relation of the duty factor of the PWM signal output from the SMnm pin is indicated by the
following expression (n = 1 to 4, m = 0, 1).
PWM (duty) =
Set value of MCMPnm × cycle of MCNT count clock
255 × cycle of MCNT count clock
× 100% =
Set value of MCMPnm
255
× 100%
Cautions: 1. MCMPn0 and MCMPn1 cannot be read or written by a 16-bit access instruction.
2. MCMPn0 and MCMPn1 are in master-slave configuration, and SMCNT is compared with a slave register. The PWM pulse is not generated until the first overflow occurs after the counting operation has been started because the compare
data is not transferred to the slave.
(6)
Meter Controller/Driver Clock Switch
The input clock of the meter controller/driver can be selected with the meter controller/driver clock
switch. By default the register is set to 00H of RESET.
SMSWI is a register that supports read/write only as 8-bit instruction.
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Chapter 19
Meter Controller / Driver
19.3 Meter Controller/Driver Control Registers
The meter controller/driver is controlled by the following three registers.
• Timer mode control register (MCNTC)
• Compare control register n (MCMPCn)
• Port mode control register (PMC)
Remark:
(1)
n = 1 to 4
Timer mode control register (MCNTC)
MCNTC is an 8-bit register that controls the operation of the free-running up counter (SMCNT).
MCNTC is set with an 8-bit memory manipulation instruction.
RESET input clears MCNTC to 00H.
Figure 19-3 shows the MCNTC format.
Figure 19-3:
Timer Mode Control Register (MCNTC) Format
Symbol
7
6
5
4
3
2
1
0
Address After Reset R/W
MCNTC
0
0
PCS
PCE
0
0
0
0
FFBFH
PCS
00H
R/W
Timer Counter Clock Selection
0
Selection via SMSWI register
1
fX/2
PCE
Timer Operation Control
0
Operation stopped (timer value is cleared)
1
Operation enabled
Cautions: 1. When rewriting MCNTC to other data, stop the timer operation (PCE=0)
beforehand.
2. Bits 0 to 3, 6, and 7 must be set to 0.
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(2)
Meter Controller / Driver
Compare control register (MCMPCn)
MCMPCn is an 8-bit register that controls the operation of the compare register and output
direction of the PWM pin.
MCMPCn is set with an 8-bit memory manipulation instruction.
RESET input clears MCMPCn to 00H.
Figure 19-4 shows the MCMPCn format.
Figure 19-4:
Compare Control Register n (MCMPCn) Format
Symbol
7
6
5
4
3
2
1
0
MCMPCn
0
0
0
TENn
ADBn1
ADBn0
DIRn1
DIRn0
TENn Note
FFCCH
to
FFCFH
00H
R/W
Enables Transfer by Register from Master to Slave
0
Disables data transfer from master to slave.
New data can be written.
1
Transfer data from master to slave when SMCNT overflows.
New data cannot be written.
ADBn1
Control of 1-bit Addition circuit (cos side of meter n)
0
No 1-bit addition to PWM output
1
1-bit addition to PWM output
ADBn0
Remark:
Address After Reset R/W
Control of 1-bit Addition circuit (sin side of meter n)
0
No 1-bit addition to PWM output
1
1-bit addition to PWM output
n = 1 to 4
Note: TENn functions as a control bit and status flag.
As soon as the timer overflows and PWM data is output, TENn is cleared to “0” by hardware.
The relation among the DIRn1 and DIRn0 bits of the MCMPCn register and output pin is shown
below.
Caution:
342
Direction Control Bit
DIRn1
DIRn2
0
0
1
0
0
1
1
0
SMn1
SMn2
SMn3
0
PWM
0
PWM
0
1
PWM
0
0
PWM
PWM
0
PWM
PWM
PWM
0
Bits 5 to 7 must be set to 0.
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Chapter 19
(3)
Meter Controller / Driver
Port mode control register (PMC)
PMC is an 8-bit register that specifies PWM/PORT output.
PMC is set with an 8-bit memory manipulation instruction.
RESET input clears PMC to 00H.
Figure 19-5 shows the PMC format.
Figure 19-5:
Port Mode Control Register (PMC) Format (1/2)
Symbol
7
6
5
4
3
2
1
0
PMC
MOD4
MOD3
MOD2
MOD1
EN4
EN3
EN2
EN1
MOD4
Meter 4 output is full bridge
1
Meter 4 output is half bridge
Meter 3 output is full bridge
1
Meter 3 output is half bridge
Meter 2 output is full bridge
1
Meter 2 output is half bridge
Meter 1 Full/Half Bridge Selection
0
Meter 1 output is full bridge
1
Meter 1 output is half bridge
EN4
Meter 4 Port/PWM Mode Selection
0
Meter 4 output is in port mode
1
Meter 4 output is in PWM mode
EN3
R/W
Meter 2 Full/Half Bridge Selection
0
MOD1
00H
Meter 3 Full/Half Bridge Selection
0
MOD2
FFCBH
Meter 4 Full/Half Bridge Selection
0
MOD3
Address After Reset R/W
Meter 3 Port/PWM Mode Selection
0
Meter 3 output is in port mode
1
Meter 3 output is in PWM mode
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Figure 19-5:
Meter Controller / Driver
Port Mode Control Register (PMC) Format (2/2)
EN2
Meter 2 Port/PWM Mode Selection
0
Meter 2 output is in port mode
1
Meter 2 output is in PWM mode
EN1
Meter 1 Port/PWM Mode Selection
0
Meter 1 output is in port mode
1
Meter 1 output is in PWM mode
The relation among the ENn and MODn bits of the PMC register, DIRn1 and DIRn0 bits of the
MCMPCn register, and output pins is shown below.
ENn
MODn
DIRn1
DIRn0
SMn1
(sin +)
SMn2
(sin -)
SMn3
(cos +)
SMn4
(cos -)
Mode
0
X
X
X
PORT
PORT
PORT
PORT
Port mode
1
0
0
0
PWM
GND
PWM
GND
1
0
0
1
PWM
GND
GND
PWM
1
0
1
0
GND
PWM
GND
PWM
1
0
1
1
GND
PWM
PWM
GND
1
1
0
0
PWM
PORT
PWM
PORT
1
1
0
1
PWM
PORT
PORT
PWM
1
1
1
0
PORT
PWM
PORT
PWM
1
1
1
1
PORT
PWM
PWM
PORT
PWM mode full bridge
PWM mode half bridge
DIRn1 and DIRn0 address the quadrant of sin and cos. DIRn1 and DIRn0 = 00 through 11
correspond to quadrants 1 through 4, respectively. The PWM signal is routed to the specific pin
with respect to the sin/cos of each quadrant.
When ENn = 0, all the output pins are used as port pins regardless of MODn, DIRn1 and DIRn0.
When ENn = 1 and MODn = 0, the full bridge mode is set, and 0 a pin that does not output a PWM
signal is “0”.
When ENn = 1 and MODn = 1, the half bridge mode is set, and the pin that does not output a
PWM signal is used as a port pin.
Caution:
(4)
The output polarity of the PWM output changes when SMCNT overflows.
Meter controller/driver clock register (SMSWI)
SMSWI is an 8-bit register that specifies the input clock of the meter controller/driver.
SMSWI is set with an 8-bit memory manipulation instruction.
RESET input sets SMSWI to 00H.
Figure 19-6 shows the SMSWI format.
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Figure 19-6:
Meter Controller / Driver
Meter Controller/Driver Clock Register (SMSWI) Format
Symbol
7
6
5
4
3
SMSWI
0
0
0
0
0
2
1
0
SMCL2 SMCL1 SMCL0
Address After Reset R/W
FFBDH
SMCL2
SMCL1
SMCL0
Meter Controller/Driver Clock Switch
0
0
0
fX
0
0
1
fX/8
0
1
0
fX/16
0
1
1
fX/64
1
0
0
fX/128
1
0
1
fX/256
1
1
0
fX/512
1
1
1
TM52 Output
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R/W
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Chapter 19
Meter Controller / Driver
19.4 Meter Controller/Driver Operations
19.4.1 Basic operation of free-running up counter (SMCNT)
The free-running up counter is clocked by the count clock selected by the PCS bit of the time mode
control register.
The value of SMCNT is cleared by RESET input.
The counting operation is enabled or disabled by the PCE bit of the timer mode control register
(MCNTC).
Figure 19-7 shows the timing from count start to restart.
Figure 19-7:
Restart Timing after Count Stop (Count Start → Count Stop → Count Start)
CLK
MCNT
0H
1H
2H
N
N+1
00H
1H
PCE
Count Start
Remark:
346
Count Stop
Count Start
N = 00H to FFH
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3H
4H
Chapter 19
Meter Controller / Driver
19.4.2 Update of PWM data
Confirm that bit 4 (TENn) of MCMPCn is 0, wait for more than one PWM clock cycle (as selected in
SMSWI register), and then write 8-bit PWM data to MCMPn1, MCMPn, and ADBn1 and ADBn0 of
MCMPCn. At the same time, set TENn to 1.
The data will be automatically transferred to the slave latch when the timer overflows, and the PWM
data becomes valid. At the same time, TENn is automatically cleared to 0.
Figure 19-8:
Update of PWM data
TENn = 0
?
No
Yes
Wait > 1 PWM
clock cycle
While MCMPCn
data
TENn = 1
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Meter Controller / Driver
19.4.3 Operation of 1-bit addition circuit
Figure 19-9:
Timing in 1-bit Addition Circuit Operation
FFH
N
SMCNT Value
00H
01H
OVF (Overflow)
Match signal of
expected value N
PWM output of
expected value N
(1-bit non-addition)
PWM output of
expected value N
(1-bit addition)
PWM output of
expected value N+1
(1-bit non-addition)
The 1-bit addition mode repeats 1-bit addition/non-addition to the PWM output every second SMCNT
overflow. Therefore, the falling edge of the PWM output signal will occur at compare value N and compare value N+1 alternately. A 1-bit addition to the PWM output is applied by setting ADBn of the MCMPCn register to 1. In 1-bit non-addition mode the falling edge of the PWM output signal will always occur
at compare value N+1 of SMCNT. A 1-bit non-addition (normal output) is applied by setting ADBn to 0.
Remark:
348
n = 1 to 4
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Meter Controller / Driver
19.4.4 PWM output operation (output with 1 clock shifted)
Figure 19-10:
Timing of Output with 1 Clock Shifted
Count clock
Meter 1 sin
(SM11, SM12)
Meter 1 cos
(SM13, SM14)
Meter 2 sin
(SM21, SM22)
Meter 2 cos
(SM23, SM24)
Meter 3 sin
(SM31, SM32)
Meter 3 cos
(SM33, SM34)
Meter 4 sin
(SM41, SM42)
Meter 4 cos
(SM43, SM44)
If the wave of sin and cos of meters 1 to 4 rises and falls internally as indicated by the broken line, the
SM11 to SM44 pins always shift the count clock by 1 clock. The output signals are generated in order to
prevent VDD/GND from fluctuating.
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[MEMO]
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Chapter 20
Interrupt Functions
20.1 Interrupt Function Types
The following three types of interrupt functions are used.
(1)
Non-maskable interrupt
This interrupt is acknowledged unconditionally even in a disabled state. It does not undergo interrupt priority control and is given top priority over all other interrupt requests.
It generates a standby release signal.
The non-maskable interrupt has one source of interrupt request from the watchdog timer.
(2)
Maskable interrupts
These interrupts undergo mask control. Maskable interrupts can be divided into a high interrupt
priority group and a low interrupt priority group by setting the priority specify flag register
(PR0L, PR0H, and PR1L).
Multiple high priority interrupts can be applied to low priority interrupts. If two or more interrupts
with the same priority are simultaneously generated, each interrupts has a predetermined priority
(see Table 20-1, “Interrupt Source List,” on page 352).
A standby release signal is generated.
The maskable interrupt has seven sources of external interrupt requests and fifteen sources of
internal interrupt requests.
(3)
Software interrupt
This is a vectored interrupt to be generated by executing the BRK instruction. It is acknowledged
even in a disabled state. The software interrupt does not undergo interrupt priority control.
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20.2 Interrupt Sources and Configuration
There are total of 24 interrupt sources: non-maskable, maskable, and software interrupts.
Table 20-1:
Interrupt
Priority
Maskability
Note 1
Nonmaskable
Maskable
Software
_
Interrupt Source List
Interrupt Source
Name
INTWDT
Trigger
Basic
Internal/ Vector Structure
External Address
TypeNote 2
Overflow of watchdog timer (When the Watchdog
timer NMI is selected)
(A)
0004H
0
INTWDT
Overflow of watchdog timer (When the interval
timer mode is selected)
1
INTAD
End of A/D converter conversion
2
INTOVF
Overflow of 16-bit timer 2
3
INTTM20
Generation of 16-bit timer capture register (CR20)
match signal
000AH
4
INTTM21
Generation of 16-bit timer capture register (CR21)
match signal
000CH
5
INTTM22
Generation of 16-bit timer capture register (CR22)
match signal
000EH
6
INTP0
7
INTP1
8
INTP2
9
INTCE
CAN Error
0016H
10
INTCR
CAN Receive
0018H
11
INTCT0
CAN Transmit buffer 0
001AH
12
INTCT1
CAN Transmit buffer 1
001CH
13
INTCSI30 End of serial interface channel 30 (SIO30)transfer
001EH
14
INTSER0 Channel 1 UART reception error generation
0020H
15
INTSR0
End of channel 1 UART reception
0022H
16
INTST0
End of channel 1 UART transfer
17
Generation of 8-bit timer/event counter 50 match
INTTM50
signal
0026H
18
INTTM51
Generation of 8-bit timer/event counter 51 match
signal
0028H
19
INTTM52 Generation of 8-bit timer 52 match signal 002AH
002AH
20
INTWTI
Reference time interval signal from watch timer
002EH
21
INTWT
Reference time interval signal from watch timer
0030H
22
INTCSI31 End of serial interface channel 31 (SIO31) transfer
_
BRK
0006H
Internal
0008H
(B)
0010H
Pin input edge detection
External 0012H
(C)
0014H
BRK instruction execution
Internal 0024H
(B)
0032H
Internal 003EH
(D)
Notes: 1. Default priorities are intended for two or more simultaneously generated maskable
interrupt requests. 0 is the highest priority and 22 is the lowest priority.
2. Basic configuration types (A) to (D) correspond to (A) to (D) of Figure 20-1on page 353.
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Figure 20-1:
Interrupt Functions
Basic Configuration of Interrupt Function (1/2)
(a) Internal non-maskable interrupt
Internal Bus
Vector Table
Address
Generator
Priority Control
Circuit
Interrupt
Request
Standby
Release Signal
(b) Internal maskable interrupt
Internal Bus
MK
Interrupt
Request
IF
IE
PR
ISP
Priority Control
Circuit
Vector Table
Address
Generator
Standby
Release Signal
Remark:
IF
IE
ISP
MK
PR
:
:
:
:
:
Interrupt request flag
Interrupt enable flag
In-service priority flag
Interrupt mask flag
Priority specify flag
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Chapter 20 Interrupt Functions
Figure 20-1:
Basic Configuration of Interrupt Function (2/2)
(c) External maskable interrupt (except INTP0)
Internal Bus
External Interrupt
Mode Register
(EGN, EGP)
Interrupt
Request
Edge
Detector
MK
IE
PR
Priority Control
Circuit
IF
ISP
Vector Table
Address
Generator
Standby
Release Signal
(d) Software interrupt
Internal Bus
Priority Control
Circuit
Interrupt
Request
Remark:
354
IF
IE
ISP
MK
PR
:
:
:
:
:
Vector Table
Address
Generator
Interrupt request flag
Interrupt enable flag
In-service priority flag
Interrupt mask flag
Priority specify flag
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Chapter 20
Interrupt Functions
20.3 Interrupt Function Control Registers
The following six types of registers are used to control the interrupt functions.
• Interrupt request flag register (IF0L, IF0H, IF1L)
• Interrupt mask flag register (MK0L, MK0H, MK1L)
• Priority specify flag register (PR0L, PR0H, PR1L)
• External interrupt mode register (EGP, EGN)
• Program status word (PSW)
Table 20-2 gives a listing of interrupt request flags, interrupt mask flags, and priority specify flags corresponding to interrupt request sources.
Table 20-2:
Various Flags Corresponding to Interrupt Request Sources
Interrupt Request
Signal Name
Interrupt Request
Flag
Interrupt Mask
Flag
Priority Specify
Flag
INTP0
PIF0
PMK0
PPR0
INTP1
PIF1
PMK1
PPR1
INTP2
PIF2
PMK2
PPR2
INTOVF
OVFIF
OVFMK
OVFPR
INTTM20
TMIF20
TMMK20
TMPR20
INTTM21
TMIF21
TMMK21
TMPR21
INTTM22
TMIF22
TMMK22
TMPR22
INTM50
TMIF50
TMMK50
TMPR50
INTM51
TMIF51
TMMK51
TMPR51
INTM52
TMIF52
TMMK52
TMPR52
INTWTI
WTIIF
WTIMK
WTIPR
INTWT
WTIF
WTMK
WTPR
INTWDT
WDTIF
WDTMK
WDTPR
INTAD
ADIF
ADMK
ADPR
INTCSI30
CSIIF30
CSIMK30
CSIPR30
INTSER0
SERIF0
SERMK0
SERPR0
INTSR0
SRIF0
SRMK0
SRPR0
INTST0
STIF0
STMK0
STPR0
INTCE
CEIF
CEMK
CEPR
INTCR
RRF
CRMK
CRPR
INTCT0
CTIF0
CTMK0
CTPR0
INTCT1
CTIF1
CTMK1
CTPR1
INTWE
WEIF
WEMK
WEPR
INTCSI31
CSIIF31
CSIMK31
CSIPR31
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Chapter 20 Interrupt Functions
(1)
Interrupt request flag registers (IF0L, IF0H, IF1L)
The interrupt request flag is set to 1 when the corresponding interrupt request is generated. It is
cleared to 0 when an instruction is executed upon acknowledgment of an interrupt request or upon
application of RESET input.
IF0L, IF0H, and IF1L are set with a 1-bit or 8-bit memory manipulation instruction. If IF0L and IF0H
are used as a 16-bit register IF0, use a 16-bit memory manipulation instruction for the setting.
RESET input sets these registers to 00H.
Figure 20-2:
Symbol
<7>
<6>
IF0L
PIF1
PIF0
IF0H
IF1L
<5>
Interrupt Request Flag Register Format
<4>
SRIF0 SERIF0 CSIIF30 CTIF1
CSIIF31
WTIF
<3>
<2>
TMIF22 TMIF21 TMIF20 OVFIF
WTIIF
0
xxIFx
CTIF0
CRIF
<1>
<0>
ADIF
WDTIF
FFE0H
00H
R/W
CEIF
PIF2
FFE1H
00H
R/W
STIF0
FFE2H
00H
R/W
TMIF52 TMIF51 TMIF50
Address After Reset R/W
Interrupt request flag
0
No interrupt request signal
1
Interrupt request signal is generated; interrupt request state
Cautions: 1. WDTIF flag is R/W enabled only when the watchdog timer is used as an interval
timer. If used in the watchdog timer mode 1, set WDTIF flag to 0.
2. Set always 0 in IF1L bit 4.
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(2)
Interrupt Functions
Interrupt mask flag registers (MK0L, MK0H, MK1L)
The interrupt mask flag is used to enable/disable the corresponding maskable interrupt service.
MK0L, MK0H, and MK1L are set with a 1-bit or 8-bit memory manipulation instruction. If MK0L
and MK0H are used as a 16-bit register MK0, use a 16-bit memory manipulation instruction for the
setting.
RESET input sets these registers to FFH.
Figure 20-3:
Symbol
<7>
<6>
MK0L
PMK1
PMK0
<5>
Interrupt Mask Flag Register Format
<4>
<3>
<2>
<1>
<0>
TMMK22 TMMK21 TMMK20 OVFMK ADMK WDTMK
FFE4H
FFH
R/W
PMK2
FFE5H
FFH
R/W
TMMK52 TMMK51 TMMK50 STMK0
FFE6H
FFH
R/W
MK0H SRMK0 SERMK0 CSIMK30 CTMK1 CTMK0
MK1L CSIMK31 WTMK
WTIMK
1
Address After Reset R/W
xxMKx
CRMK
CEMK
Interrupt Servicing Control
0
Interrupt servicing enabled
1
Interrupt servicing disabled
Cautions: 1. If WDTMK flag is read when the watchdog timer is used as a non-maskable
interrupt, WDTMK value becomes undefined.
2. Set always 1 in MK1L bit 4.
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Chapter 20 Interrupt Functions
(3)
Priority specify flag registers (PR0L, PR0H, PR1L)
The priority specify flag is used to set the corresponding maskable interrupt priority orders.
PR0L, PR0H, and PR1L are set with a 1-bit or 8-bit memory manipulation instruction. If PR0L and
PR0H are used as a 16-bit register PR0, use a 16-bit memory manipulation instruction for the
setting.
RESET input sets these registers to FFH.
Figure 20-4:
Symbol
<7>
PR0L
PPR1
PR0H
<6>
<5>
Priority Specify Flag Register Format
<4>
<3>
<2>
PPR0 TMPR22 TMPR21 TMPR20 OVFPR
WTIPR
1
<0>
Address After Reset R/W
FFE8H
FFH
R/W
CEPR
PPR2
FFE9H
FFH
R/W
TMPR52 TMPR51 TMPR50 STPR0
FFEAH
FFH
R/W
SRPR0 SERPR0 CSIPR30 CTPR1 CTPR0
PR1L CSIPR31 WTPR
<1>
ADPR WDTPR
xxPRx
CRPR
Priority Level Selection
0
High priority level
1
Low priority level
Cautions: 1. The WDTPR flag is only valid, if the watchdog timer is used as interval timer. If the
non-maskable interrupt of the watchdog timer is used, set WDTPR to 1.
2. Set always 1 in PR1L bit 4.
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(4)
Interrupt Functions
External interrupt rising edge enable register (EGP), external interrupt falling edge enable
register (EGN)
EGP and EGN specify the valid edge to be detected on pins P00 to P02.
EGP and EGN can be read or written to with a 1-bit or 8-bit memory manipulation instruction.
These registers are set to 00H when the RESET signal is output.
Figure 20-5: Formats of External Interrupt Rising Edge Enable Register
and External Interrupt Falling Edge Enable Register
Symbol
7
6
5
4
3
2
1
0
EGP
0
0
0
0
0
EGP2
EGP1
EGP0
Symbol
7
6
5
4
3
2
1
0
EGN
0
0
0
0
0
EGN2
EGN1
EGN0
EGPn
EGNn
0
0
Interrupt disable
0
1
Falling edge
1
0
Rising edge
1
1
Both rising and falling edges
Address After Reset R/W
FF48H
00H
R/W
Address After Reset R/W
FF49H
00H
R/W
Valid edge of INTPn pin (n = 0 - 2)
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Chapter 20 Interrupt Functions
(5)
Program status word (PSW)
The program status word is a register to hold the instruction execution result and the current status
for interrupt request. The IE flag to set maskable interrupts (enable/disable) and the ISP flag to
control multiple interrupt servicing are mapped.
Besides 8-bit unit read/write, this register can carry out operations with a bit manipulation instruction and dedicated instructions (EI and DI). When a vectored interrupt request is acknowledged,
and when the BRK instruction is executed, the contents of PSW automatically is saved onto the
stack and the IE flag is reset to 0. If a maskable interrupt request is acknowledged contents of the
priority specify flag of the acknowledged interrupt are transferred to the ISP flag. The acknowledged contents of PSW is also saved onto the stack with the PUSH PSW instruction. It is retrieved
from the stack with the RETI, RETB, and POP PSW instructions.
RESET input sets PSW to 02H.
Figure 20-6:
Symbol
7
6
5
4
3
2
1
0
PSW
IE
Z
RBS1
AC
RBS0
0
ISP
CY
ISP
After Reset R/W
Priority of Interrupt Currently Being Received
0
High-priority interrupt servicing (low-priority interrupt disable)
1
Interrupt request not acknowledged or low-priority interrupt
servicing (all-maskable interrupts enable)
IE
360
Program Status Word Format
Interrupt Request Acknowledge Enable/Disable
0
Disable
1
Enable
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R/W
Chapter 20
Interrupt Functions
20.4 Interrupt Servicing Operations
20.4.1 Non-maskable interrupt request acknowledge operation
A non-maskable interrupt request is unconditionally acknowledged even if in an interrupt request
acknowledge disable state. It does not undergo interrupt priority control and has highest priority over all
other interrupts.
If a non-maskable interrupt request is acknowledged, PSW and PC are pushed on the stack. The IE
and ISP flags are reset to 0, and the vector table contents are loaded into PC.
A new non-maskable interrupt request generated during execution of a non-maskable interrupt servicing program is acknowledged after the current execution of the non-maskable interrupt servicing program is terminated (following RETI instruction execution) and one main routine instruction is executed.
If a new non-maskable interrupt request is generated twice or more during a non-maskable interrupt
service program execution, only one non-maskable interrupt request is acknowledged after termination
of the non-maskable interrupt service program execution.
Figure 20-7:
Flowchart from Non-Maskable Interrupt Generation to Acknowledge
Start
WDT = 1
(with watchdog timer
mode selected)?
No
Interval timer
Yes
Overflow in WDT?
No
Yes
WDT = 0
(with non-maskable
interrupt selected)?
No
Reset processing
Yes
Interrupt request generation
WDT interrupt servicing?
No
Interrupt request
held pending
Yes
Interrupt control
register unaccessed?
No
Yes
Interrupt
service start
Remark:
WDTM :
WDT :
Watchdog timer mode register
Watchdog timer
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Chapter 20 Interrupt Functions
Figure 20-8:
CPU Instruction
Non-Maskable Interrupt Request Acknowledge Timing
PSW and PC Save, Jump Interrupt Sevicing
to Interrupt Servicing
Program
Instruction
Instruction
WDTIF
Remark:
WDTIF :
Watchdog timer interrupt request flag
Figure 20-9:
Non-Maskable Interrupt Request Acknowledge Operation
(a) If a new non-maskable interrupt request is generated
during non-maskable interrupt servicing program execution
Main Routine
NMI Request
1 Instruction
Execution
NMI Request
NMI Request Reserve
Reserved NMI Request Processing
(b) If two non-maskable interrupt requests are generated
during non-maskable interrupt servicing program execution
Main Routine
NMI Request
1 Instruction
Execution
NMI
Request
Reserved
NMI
Request
Reserved
Although two or more NMI requests
have been generated, only one
request has been acknowledged.
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Interrupt Functions
20.4.2 Maskable interrupt request acknowledge operation
A maskable interrupt request becomes acknowledgeable when an interrupt request flag is set to 1 and
the interrupt mask (MK) flag is cleared to 0. A vectored interrupt request is acknowledged in an interrupt
enable state (with IE flag set to 1). However, a low-priority interrupt request is not acknowledged during
high-priority interrupt service (with ISP flag reset to 0).
Wait times from maskable interrupt request generation to interrupt servicing are as follows.
Table 20-3:
Times from Maskable Interrupt Request Generation to Interrupt Service
Minimum Time
Maximum TimeNote
When xxPRx = 0
7 clocks
32 clocks
When xxPRx = 1
8 clocks
33 clocks
Note: If an interrupt request is generated just before a divide instruction, the wait time is maximized.
Remark:
1 clock: 1/ fCPU
(fCPU: CPU clock)
If two or more maskable interrupt requests are generated simultaneously, the request specified for
higher priority with the priority specify flag is acknowledged first. If two or more requests are specified
for the same priority with the priority specify flag, the interrupt request with the higher default priority is
acknowledged first.
Any reserved interrupt requests are acknowledged when they become acknowledgeable.
Figure 20-10 on page 364 shows interrupt request acknowledge algorithms.
When a maskable interrupt request is acknowledged, the contents of program status word (PSW) and
program counter (PC) are saved in this order onto the stack. Then, the IE flag is reset (to 0), and the
value of the acknowledged interrupt priority specify flag is transferred to the ISP flag. Further, the vector
table data determined for each interrupt request is loaded into PC and the program will branch
accordingly.
Return from the interrupt is possible with the RETI instruction.
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Chapter 20 Interrupt Functions
Figure 20-10:
Interrupt Request Acknowledge Processing Algorithm
Start
No
xxIF = 1?
Yes (Interrupt Request
Generation)
No
xxMK = 0?
Yes
Interrupt request
reserve
Yes (High priority)
xxPR = 0?
No (Low Priority)
Yes
Any highpriority interrupt among
simultaneously generated
xxPR = 0 interrupts?
Interrupt request
reserve
Any
simultaneously
generated xxPR = 0
interrupts?
Yes
Interrupt request
reserve
No
No
No
Interrupt request
reserve
IE = 1?
Yes
Any
simultaneously
generated high-priority
interrupts?
Yes
Interrupt request
reserve
No
Vectored interrupt
servicing
IE = 1?
No
Interrupt request
reserve
Yes
ISP = 1?
Yes
No
Interrupt request
reserve
Vectored interrupt
servicing
Remark:
364
xxIF
: Interrupt request flag
xxMK : Interrupt mask flag
xxPR : Priority specify flag
IE
: Flag to control maskable interrupt request acknowledge
ISP
: Flag to indicate the priority of interrupt being serviced
(0 = an interrupt with higher priority is being serviced,
1 = interrupt request is not acknowledged or an interrupt with lower priority
is being serviced)
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Chapter 20
Figure 20-11:
Interrupt Functions
Interrupt Request Acknowledge Timing (Minimum Time)
6 Clocks
CPU Processing
Instruction
Instruction
xxIF
(xxPR = 1)
7 Clocks
1 clock: 1/ fCPU
(fCPU: CPU clock)
Figure 20-12:
Interrupt Request Acknowledge Timing (Maximum Time)
25 Clocks
CPU Processing
Instruction
xxIF
(xxPR = 1)
xxIF
(xxPR = 0)
Remark:
Interrupt
Servicing
Program
8 Clocks
xxIF
(xxPR = 0)
Remark:
PSW and PC Save,
Jump to Interrupt
Servicing
Divide Instruction
6 Clocks
PSW and PC Save,
Jump to Interrupt
Servicing
Interrupt
Servicing
Program
33 Clocks
32 Clocks
1 clock: 1/ fCPU
(fCPU: CPU clock)
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20.4.3 Software interrupt request acknowledge operation
A software interrupt request is acknowledged by BRK instruction execution. Software interrupt cannot
be disabled.
If a software interrupt is acknowledged, the contents of program status word (PSW) and program counter (PC) are saved to stacks, in this order. Then the IE flag is reset (to 0), and the contents of the vector
tables (003EH and 003FH) are loaded into PC and the program branches accordingly.
Return from the software interrupt is possible with the RETB instruction.
Caution:
Do not use the RETI instruction for returning from the software interrupt.
20.4.4 Multiple interrupt servicing
A multiple interrupt service consists in acknowledging another interrupt during the execution of another
interrupt routine.
A multiple interrupt service is generated only in the interrupt request acknowledge enable state (IE = 1)
(except non-maskable interrupt). As soon as an interrupt request is acknowledged, it enters the
acknowledge disable state (IE = 0). Therefore, in order to enable multiple interrupts, it is necessary to
set the interrupt enable state by setting the IE flag (1) with the EI instruction during interrupt servicing.
Even in an interrupt enabled state, a multiple interrupt may not be enabled. However, it is controlled
according to the interrupt priority. There are two priorities, the default priority and the programmable priority. The multiple interrupt is controlled by the programmable priority control.
If an interrupt request with the same or higher priority than that of the interrupt being serviced is generated, it is acknowledged as a multiple interrupt. In the case of an interrupt with a priority lower than that
of the interrupt being processed, it is not acknowledged as a multiple interrupt.
An interrupt request not acknowledged as a multiple interrupt due to interrupt disable or a low priority is
reserved and acknowledged following one instruction execution of the main processing after the completion of the interrupt being serviced.
During non-maskable interrupt servicing, multiple interrupts are not enabled.
Table 20-4 on page 367 shows an interrupt request enabled for multiple interrupt during interrupt servicing, and Figure 20-13 on page 368 shows multiple interrupt examples.
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Table 20-4:
Interrupt Functions
Interrupt Request Enabled for Multiple Interrupt during Interrupt Servicing
Maskable Interrupt Non-maskable
Request
Interrupt
Request
Interrupt being serviced
Maskable Interrupt Request
xxPR = 0
xxPR = 1
IE = 1
IE = 0
IE = 1
IE = 0
D
D
D
D
D
ISP = 0
E
E
D
D
D
ISP = 1
E
E
D
E
D
E
E
D
E
D
Non-maskable interrupt
Maskable Interrupt
Software interrupt
Remarks: 1. E : Multiple interrupt enable
2. D : Multiple interrupt disable
3. ISP and IE are the flags contained in PSW
ISP = 0 : An interrupt with higher priority is being serviced
ISP = 1 : An interrupt request is not accepted or an interrupt with lower priority is being
serviced
IE = 0 : Interrupt request acknowledge is disabled
IE = 1 : Interrupt request acknowledge is enabled
4. xxPR is a flag contained in PR0L, PR0H, and PRIL
xxPR = 0 : Higher priority level
xxPR = 1 : Lower priority level
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Figure 20-13:
Multiple Interrupt Example (1/2)
(a) Example 1. Two multiple interrupts generated
Main Processing
INTyy
Servicing
INTxx
Servicing
IE = 0
IE = 0
IE = 0
EI
EI
EI
INTyy
(PR = 0)
INTxx
(PR = 1)
INTzz
Servicing
INTzz
(PR = 0)
RETI
RETI
RETI
During interrupt INTxx servicing, two interrupt requests, INTyy and INTzz are acknowledged, and a multiple interrupt is generated. An EI instruction is issued before each interrupt request acknowledge, and
the interrupt request acknowledge enable state is set.
(b) Example 2. Multiple interrupt is not generated by priority control
Main Processing
EI
INTxx
Servicing
INTyy
Servicing
IE = 0
EI
INTyy
(PR = 1)
INTxx
(PR = 0)
RETI
1 Instruction
Execution
IE = 0
RETI
The interrupt request INTyy generated during interrupt INTxx servicing is not acknowledged because
the interrupt priority is lower than that of INTxx, and a multiple interrupt is not generated. INTyy request
is retained and acknowledged after execution of 1 instruction execution of the main processing.
Remark:
368
PR = 0 : Higher priority level
PR = 1 : Lower priority level
IE = 0 : Interrupt request acknowledge disable
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Chapter 20
Figure 20-13:
Interrupt Functions
Multiple Interrupt Example (2/2)
(c) Example 3. A multiple interrupt is not generated because interrupts are not enabled
Main Processing
EI
INTxx
(PR = 0)
1 Instruction
Execution
INTxx
Servicing
INTyy
Servicing
IE = 0
INTyy
(PR = 0)
RETI
IE = 0
RETI
Because interrupts are not enabled in interrupt INTxx servicing (an EI instruction is not issued), interrupt request INTyy is not acknowledged, and a multiple interrupt is not generated. The INTyy request is
reserved and acknowledged after 1 instruction execution of the main processing.
Remark:
PR = 0 : Higher priority level
IE = 0 : Interrupt request acknowledge disable
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Chapter 20 Interrupt Functions
20.4.5 Interrupt request reserve
Some instructions may reserve the acknowledge of an instruction request until the completion of the
execution of the next instruction even if the interrupt request is generated during the execution.
The following list shows such instructions (interrupt request reserve instruction).
• MOV
PSW, #byte
• MOV
A, PSW
• MOV
PSW, A
• MOV1
PSW.bit, CY
• MOV1
CY, PSW.bit
• AND1
CY, PSW.bit
• OR1
CY, PSW.bit
• XOR
CY, PSW.bit
• SET1/CLR1 PSW.bit
• RETB
• RETI
• PUSH
PSW
• POP
PSW
• BT
PSW.bit, $addr16
• BF
PSW.bit, $addr16
• BTCLR
PSW.bit, $addr16
• EI
• DI
• Manipulate instructions:
for IF0L, IF0H, IF1L, MK0L, MK0H, MK1L, PR0L, PR0H, PR1L, EGP, EGN
Caution:
370
BRK instruction is not an interrupt request reserve instruction described above.
However, in a software interrupt started by the execution of BRK instruction, the IE
flag is cleared to 0. Therefore, interrupt requests are not acknowledged even when a
maskable interrupt request is issued during the execution of the BRK instruction.
However, non-maskable interrupt requests are acknowledged.
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Chapter 20
Interrupt Functions
Figure 20-14 shows the interrupt request hold timing.
Figure 20-14:
CPU processing
Instruction N
Interrupt Request Hold
Instruction M
Save PSW and PC,
Jump to interrupt service
Interrupt service
program
xxIF
Remarks: 1. Instruction N: Instruction that holds interrupts requests
2. Instruction M: Instructions other than interrupt request pending instruction
3. The xxPR (priority level) values do not affect the operation of xxIF (interrupt request).
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[MEMO]
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Chapter 21
Standby Function
21.1 Standby Function and Configuration
21.1.1 Standby function
The standby function is designed to decrease the power consumption of the system. The following two
modes are available.
(1)
HALT mode
HALT instruction execution sets the HALT mode. The HALT mode is intended to stop the CPU
operation clock. System clock oscillator continues oscillation. In this mode, current consumption
cannot be decreased as much as in the STOP mode. The HALT mode is capable of restart immediately upon interrupt request and to carry out intermittent operations such as watch applications.
(2)
STOP mode
STOP instruction execution sets the STOP mode. In the STOP mode, the main system clock oscillator stops and the whole system stops. CPU current consumption can be considerably
decreased.
Data memory low-voltage hold is possible. Thus, the STOP mode is effective to hold data memory
contents with ultra-low current consumption. Because this mode can be cleared upon interrupt
request, it enables intermittent operations to be carried out.
However, because a wait time is necessary to secure an oscillation stabilization time after the
STOP mode is cleared, select the HALT mode if it is necessary to start processing immediately
upon interrupt request.
In any mode, all the contents of the register, flag, and data memory just before entering the standby
mode are held. The input/output port output latch and output buffer status are also held.
Cautions: 1. When proceeding to the STOP mode, be sure to stop the peripheral hardware
operation and execute the STOP instruction afterwards.
2. The following sequence is recommended for power consumption reduction of the
A/D converter when the standby function is used: first clear bit 7 (ADCS1) of
ADM1 to 0 to stop the A/D conversion operation, and then execute the HALT or
STOP Instruction.
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Chapter 21
Standby Function
21.1.2 Standby function control register
A wait time after the STOP mode is cleared upon interrupt request till the oscillation stabilizes is controlled with the oscillation stabilization time select register (OSTS).
OSTS is set with an 8-bit memory manipulation instruction.
RESET input sets OSTS to 04H.
However, it takes 217/fX until the STOP mode is cleared by RESET input.
Figure 21-1:
Oscillation Stabilization Time Select Register Format
Symbol
7
6
5
4
3
OSTS
0
0
0
0
0
2
0
OSTS2 OSTS1 OSTS0
FFFAH
OSTS1
OSTS0
Selection of Oscillation Stabilization Time
when STOP Mode is Released
0
0
0
212/fX (512 µs)
0
0
1
214/fX (2 ms)
0
1
0
215/fX (4.1 ms)
1
1
1
216/fX (8.9 ms)
1
0
0
217/fX (16.38 ms)
04H
R/W
Setting prohibited
The wait time after STOP mode clear does not include the time (see “a” in the Figure
21-2 below) from STOP mode clear to clock oscillation start, regardless of clearance
by RESET input or by interrupt generation.
Figure 21-2:
Standby Timing
STOP Mode Clear
X1 Pin
Voltage
Waveform
a
VSS
Remarks: 1. fX: Main system clock oscillation frequency
2. Values in parentheses apply to operating at fX = 8.00 MHz
374
Address After Reset R/W
OSTS2
Other than above
Caution:
1
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Chapter 21
Standby Function
21.2 Standby Function Operations
21.2.1 HALT mode
(1)
HALT mode set and operating status
The HALT mode is set by executing the HALT instruction.
The operating status in the HALT mode is described below.
Table 21-1:
HALT Mode Operating Status
HALT mode setting
HALT execution during main system clock operation
Item
Clock generator
Main clock is oscillating / Clock supply to the CPU stops
CPU
Operation stops
Port (output latch)
Status before HALT mode setting is held
16-bit timer (TM2)
Operable
8-bit timer event counter (TM50/TM51/TM52) Operable
Watch timer
Operable
Watchdog timer
Operable
A/D converter
Operation stops
Serial I/F (SIO30, SIO31)
Operable
Serial I/F (UART)
Operable
CAN
Operation stops
Sound generator
Operable
External interrupt (INTP0 to INTP2)
Operable
LCD - C/D
Operable
Meter - C/D
Operable
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Chapter 21
(2)
Standby Function
HALT mode clear
The HALT mode can be cleared with the following four types of sources.
(a) Clear upon unmasked interrupt request
An unmasked interrupt request is used to clear the HALT mode. If interrupt acknowledge is enabled, vectored interrupt service is carried out. If disabled, the next address instruction is executed.
Figure 21-3:
HALT Mode Clear upon Interrupt Generation
HALT
Instruction
Wait
Standby
Release Signal
Operating
Mode
HALT Mode
Wait
Operating Mode
Oscillation
Clock
Remarks: 1. The broken line indicates the case when the interrupt request which has cleared the
standby status is acknowledged.
2. Wait time will be as follows:
•
When vectored interrupt service is carried out
: 8 to 9 clocks
•
When vectored interrupt service is not carried out : 2to 3 clocks
(b) Clear upon non-maskable interrupt request
The HALT mode is cleared and vectored interrupt service is carried out whether interrupt acknowledge is enabled or disabled.
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Standby Function
(c) Clear upon RESET input
As is the case with normal reset operation, a program is executed after branch to the reset vector
address.
Figure 21-4:
HALT Mode Release by RESET Input
Wait
17
(2 /f x : 16.38 ms)
HALT
Instruction
RESET
Signal
Operating
Mode
HALT Mode
Reset
Period
Oscillation
Stabilization
Wait Status
Oscillation
Oscillation
stop
Oscillation
Clock
Operating
Mode
Remarks: 1. fX: Main system clock oscillation frequency
2. Values in parentheses apply to operation at fX = 8.0 MHz
Table 21-2:
Release Source
Operation after HALT Mode Release
MKxx
PRxx
IE
ISP
Operation
0
0
0
x
Next address instruction execution
0
0
1
x
Interrupt service execution
0
1
0
1
0
1
x
0
0
1
1
1
Interrupt service execution
1
x
x
x
HALT mode hold
Non-maskable interrupt request
-
-
x
x
Interrupt service execution
RESET input
-
-
x
x
Reset processing
Maskable interrupt request
Remark:
Next address instruction execution
x: Don’t care
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Chapter 21
Standby Function
21.2.2 STOP mode
(1)
STOP mode set and operating status
The STOP mode is set by executing the STOP instruction. It can be set only with the main system
clock.
Cautions: 1. When the STOP mode is set, the X2 pin is internally connected to VDD via a pullup resistor to minimize leakage current at the crystal oscillator. Thus, do not use
the STOP mode in a system where an external clock is used for the main system
clock.
2. If there is an interrupt source with the interrupt request flag set and the interrupt
mask flag reset, the standby mode is immediately cleared. Thus, the STOP mode
is reset to the HALT mode immediately after execution of the STOP instruction.
After the wait time set using the oscillation stabilization time select register
(OSTS), the operating mode is set.
The operating status in the STOP mode is described below.
Table 21-3:
STOP Mode Operating Status
STOP mode setting
Item
378
STOP execution during main system clock operation
Clock generator
Main system clock stops oscillation
CPU
Operation stops
Port (output latch)
Status before STOP mode setting is held
16-bit timer (TM2)
Operation stops
8-bit timer/event counter (TM50, TM51)
Operable when TI50 or TI51 are selected as count clock
8-bit timer (TM52)
Operation stops
Watch timer
Operation stops
Watchdog timer
Operation stops
A/D converter
Operation stops
Serial I/F (SIO30, SIO31)
Operable at external SCK
Serial I/F (UART)
Operation stops
CAN
Operation stops
Sound generator
Operation stops
External interrupt (INTP0 to INTP2)
Operable
LCD - C/D
Operation stops
Meter - C/D
Operation stops
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Chapter 21
(2)
Standby Function
STOP mode release
The STOP mode can be cleared with the following three types of sources.
(a) Release by unmasked interrupt request
An unmasked interrupt request is used to release the STOP mode. If interrupt acknowledge is
enabled after the lapse of oscillation stabilization time, vectored interrupt service is carried out. If
interrupt acknowledge is disabled, the next address instruction is executed.
Figure 21-5:
STOP Mode Release by Interrupt Generation
Wait
(Time set by OSTS)
STOP
Instruction
Standby
Release Signal
Clock
Remark:
Operating
Mode
STOP Mode
Oscillation Stabilization
Wait Status
Oscillation
Oscillation Stop
Oscillation
Operating
Mode
The broken line indicates the case when the interrupt request which has cleared the
standby status is acknowledged.
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Standby Function
(b) Release by RESET input
The STOP mode is cleared and after the lapse of oscillation stabilization time, reset operation is
carried out.
Figure 21-6:
Release by STOP Mode RESET Input
Wait
(2 17 /f x : 16.38 ms)
STOP
Instruction
RESET
Signal
Operating
Mode
Clock
STOP Mode
Reset
Period
Oscillation Stop
Oscillation
Oscillation
Stabilization
Wait Status
Operating
Mode
Oscillation
Remarks: 1. fX: Main system clock oscillation frequency
2. Values in parentheses apply to operation at fX = 8.0 MHz
Table 21-4:
Release Source
Operation after STOP Mode Release
MKxx
PRxx
IE
ISP
Operation
0
0
0
x
Next address instruction execution
0
0
1
x
Interrupt service execution
0
1
0
1
0
1
x
0
0
1
1
1
Interrupt service execution
1
x
x
x
STOP mode hold
-
-
x
x
Reset processing
Maskable interrupt request
RESET input
Remark:
380
Next address instruction execution
x: Don’t care
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Chapter 22 Reset Function
22.1 Reset Function
The following two operations are available to generate the reset signal.
• External reset input with RESET pin
• Internal reset by watchdog timer overrun time detection
External reset and internal reset have no functional differences. In both cases, program execution starts
at the address at 0000H and 0001H by RESET input.
When a low level is input to the RESET pin or the watchdog timer overflows, a reset is applied and each
hardware is set to the status as shown in Table 23-1. Each pin has high impedance during reset input or
during oscillation stabilization time just after reset clear.
When a high level is input to the RESET input, the reset is cleared and program execution starts after
the lapse of oscillation stabilization time (217/fX). The reset applied by watchdog timer overflow is automatically cleared after a reset and program execution starts after the lapse of oscillation stabilization
time (217/fX) (see Figure 22-2, “Timing of Reset Input by RESET Input,” on page 382, Figure 22-3, “Timing of Reset due to Watchdog Timer Overflow,” on page 382, and Figure 22-4, “Timing of Reset Input in
STOP Mode by RESET Input,” on page 383).
Cautions: 1. For an external reset, apply a low level for 10 µs or more to the RESET pin.
2. During reset the main system clock oscillation remains stopped but the subsystem clock oscillation continues.
3. When the STOP mode is cleared by reset, the STOP mode contents are held during reset. However, the port pin becomes high-impedance.
Figure 22-1:
RESET
Block Diagram of Reset Function
Reset Control Circuit
Reset
Signal
Overflow
Count Clock
Watchdog Timer
Interrupt
Function
Stop
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Chapter 22 Reset Function
Timing of Reset Input by RESET Input
Figure 22-2:
X1
Reset Period
(Oscillation Stop)
Normal Operation
Oscillation
Stabilization
Time Wait
Normal Operation
(Reset Processing)
RESET
Internal
Reset Signal
Delay
Delay
High Impedance
Port Pin
Figure 22-3:
Timing of Reset due to Watchdog Timer Overflow
X1
Normal Operation
Reset Period
(Oscillation Stop)
Oscillation
Stabilization
Time Wait
Normal Operation
(Reset Processing)
Watchdog
Timer Overflow
Internal
Reset Signal
High Impedance
Port Pin
382
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Chapter 22
Figure 22-4:
Reset Function
Timing of Reset Input in STOP Mode by RESET Input
X1
STOP Instruction
Execution
Normal Operation
Stop Status
(Oscillation Stop)
Reset Period
(Oscillation Stop)
Oscillation
Stabilization
Time Wait
Normal Operation
(Reset Processing)
RESET
Internal
Reset Signal
Delay
Delay
High Impedance
Port Pin
Table 22-1:
Hardware Status after Reset (1/3)
Hardware
Status after Reset
Program counter (PC)Note 1
The contents of reset vector tables
(0000H and 0001H) are set
Stack pointer (SP)
Undefined
Program status word (PSW)
02H
RAM
Port (Output latch)
Data memory
UndefinedNote 2
General register
UndefinedNote 2
LCD Display Data Memory
Note 4
Ports 0, 2, 3, 4, 5, 6, 8, 9
(P0, P2, P3, P4, P5,P6, P8, P9)
00H
Port mode register (PM0, PM2, PM3, PM4, PM5, PM6, PM8, PM9)
FFH
Pull-up resistor option register (PU0, PU3, PU4, PU6, PU8, PU9)
00H
Port function selection (PF3, PF4, PF8, PF9)
00H
Processor clock control register (PCC)
04H
Memory size switching register (IMS)
CFH
Internal expansion RAM size switching register (IXS)
Note 3
Oscillation stabilization time select register (OSTS)
04H
Timer register (TM2)
16-bit timer/event counter 2
00H
Capture control register (CR20, CR21, CR22) 00H
Prescaler mode register (PRM2)
00H
Mode control register (TMC2)
00H
Notes: 1. During reset input or oscillation stabilization time wait, only the PC contents among the hardware statuses become undefined. All other hardware statuses remains unchanged after reset.
2. The post-reset status is held in the standby mode.
3. The value after RESET depends on the product (see Table 23-4, “Values when the Internal Expansion
RAM Size Switching Register is Reset,” on page 389)
4. RESET clears the LCD Display Data Memory to 00H.
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Chapter 22 Reset Function
Table 22-1:
Hardware Status after Reset (2/3)
Hardware
8-bit timer/event counters 50,
51 and 52
Watch timer
Watchdog timer
PCL clock output
Sound generator
Serial interface
Status after Reset
Timer register (TM50, TM51, TM52)
00H
Compare register (CR50, CR51, CR52)
00H
Clock select register (TCL50, TCL51, TCL52) 00H
Mode control register (TMC50, TMC51,
TMC52)
00H
Mode register (WTM)
00H
Clock selection register (WDCS)
00H
Mode register (WDTM)
00H
Clock output selection register (CKS)
00H
Control register (SGCR)
00H
Amplitude control (SGAM)
00H
Buzzer control (SGBC)
00H
Operating mode register (CSIM30, CSIM31)
00H
Shift register (SIO30, SIO31)
00H
Serial interface switch register (SIOSWI)
00H
Asynchronous mode register (ASIM0)
00H
Asynchronous status register (ASIS0)
00H
Baudrate generator control register (BRGL0) 00H
Transmit shift register (TXS0)
Receive buffer register (RXB0)
A/D converter
FFH
Mode register (ADM1)
00H
Conversion result register (ADCR1)
00H
Input select register (ADS1)
00H
Power Fail Comparator Mode Register (PFM) 00H
LCD-controller/driver
Interrupt
Power Fail Comparator Transload Register
(PFT)
00H
Mode register (LCDM)
00H
Control register (LCDC)
00H
Request flag register (IF0L, IF0H, IF1L)
00H
Mask flag register (MK0L, MK0H, MK1L)
FFH
Priority specify flag register (PR0L, PR0H,
PR1L)
FFH
External interrupt rising edge register (EGP)
00H
External interrupt falling edge register (EGN) 00H
Flash self-programming
384
Flash self-programming mode control register
08H
(FLPMC)
Self-programming and oscillation control reg08H
ister (SPOC)
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Chapter 22
Table 22-1:
Reset Function
Hardware Status after Reset (3/3)
Hardware
CAN
Status after Reset
Control register (CANC)
01H
Transmit control register (TCR)
00H
Receive message register (RMES)
00H
Redefinition register (REDEF)
00H
Error status register (CANES)
00H
Transmit error counter register (TEC)
00H
Receive error counter register (REC)
00H
Message count register (MCNT)
00H
Bit rate prescaler register (BRPRS)
3FH
Synchronous control register (SYNC0)
18H
Synchronous control register (SYNC1)
0EH
Mark control register (MASKC)
00H
Counter Register (SMCNT)
00H
PWM timer control register (MCNTC)
00H
Port mode control register
00H
8 bit compare register (MCMP10, MCMP11,
MCMP20, MCMP21, MCMP30, MCMP31,
Stepper Motor controller/driver MCMP40, MCMP41)
(Instrument C10)
Compare control register (MCMPC1,
MCMPC2, MCMPC3, MCMPC4)
Meter controller/driver clock switch register
(SMSWI)
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00H
00H
00H
385
[MEMO]
386
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Chapter 23
µPD78F0828A and Memory Definition
The flash memory versions of the µPD780828A Subseries includes the µPD78F0828A.
The µPD78F0828A replaces the internal mask ROM of the µPD780828A with flash memory to which a
program can be written, deleted and overwritten while mounted on the PCB. Table 23-1 lists the differences among the µPD78F0828A and the mask ROM versions.
Table 23-1:
Differences among µPD78F0828A and Mask ROM Versions
Item
Caution:
µPD78F0828A
Mask ROM Versions
IC pin
None
Available
VPP pin
Available
None
Electrical characteristics
Please refer to Chapter 25 ”Electrical Specifications” on page 411 of this document.
Flash memory versions and mask ROM versions differ in their noise tolerance and
noise emission. If replacing flash memory versions with mask ROM versions when
changing from test production to mass production, be sure to perform sufficient evaluation with CS versions (not ES versions) of mask ROM versions.
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Chapter 23
µPD78F0828A and Memory Definition
23.1 Memory Size Switching Register (IMS)
∗
This register specifies the internal memory size by using the memory size switching register (IMS), so
that the same memory map as on the mask ROM version can be achieved by using the flash device.
IMS is set with an 8-bit memory manipulation instruction.
RESET input sets this register to CFH.
∗
Caution:
When later on a mask device of the µPD780828A Subseries is selected, be sure to set
the value for this mask device as specified in Table 23-2 to IMS. Other settings are
prohibited.
Figure 23-1:
Memory Size Switching Register Format
Symbol
7
6
5
4
3
2
1
0
IMS
RAM2
RAM1
RAM0
0
ROM3
ROM2
ROM1
ROM0
FFF0H
ROM3
ROM2
ROM1
ROM0
Internal ROM size selection
1
0
0
0
32 K bytes
1
1
0
0
48 K bytes
1
1
1
1
60 K bytes
Other than above
CFH
R/W
Setting prohibited
RAM2
RAM1
RAM0
Internal high-speed RAM size selection
1
1
0
1024 bytes
Other than above
∗
Address After Reset R/W
Setting prohibited
Notes: 1. The values to be set after reset depend on the product (See Table 23-2).
2. Even if the flash version has a memory size of 59.5 K flash memory, the register has to be
set to a flash memory size of 60 K.
∗
Table 23-2:
388
Values to be set after Reset for the Memory Size Switching Register
Part Number
Reset Value
µPD780824B
C8H
µPD780826B
CCH
µPD780828B
CFH
µPD78F0828B
CFH
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Chapter 23 µPD78F0828A and Memory Definition
23.2 Internal Expansion RAM Size Switching Register
The µPD78F0828A allows users to define its internal extension RAM size by using the internal
expansion RAM size switching register (IXS), so that the same memory mapping as that of a mask
ROM version with a different internal expansion RAM is possible.
The IXS is set by an 8-bit memory manipulation instruction.
RESET signal input sets IXS to the value indicated in Table 23-4.
∗
Caution:
When later on a mask device of the µPD780828A Subseries is selected, be sure to set
the value for this mask device as specified in Table 23-2 to IMS. Other settings are
prohibited.
Figure 23-2:
Internal Expansion RAM Size Switching Register Format
Symbol
7
6
5
4
IXS
0
0
0
0
3
2
0
Address After Reset R/W
FFF4H
Note 1
IXRAM3
IXRAM2
IXRAM1
IXRAM0
Internal Expansion RAM capacity selection
1
0
1
1
480 bytes
1
0
0
0
2016 bytes
Other than above
∗
1
IXRAM3 IXRAM2 IXRAM1 IXRAM0
R/W
Setting prohibited
Notes: 1. The values after Reset depend on the product (see Table 23-4).
2. The value which is set in the IXS that has the identical memory map to the mask ROM versions is given in Table 23-3.
Table 23-3:
Table 23-4:
∗
Examples of internal Expansion RAM Size Switching Register Settings
Relevant Mask ROM Version
IXS Setting
µPD780824A
0BH
µPD780826A
0BH
µPD780828A
08H
µPD78F0828A
08H
Values when the Internal Expansion RAM Size Switching Register is Reset
Part Number
Reset Value
µPD780824A
0CH
µPD780826A
0CH
µPD780828A
0CH
µPD78F0828A
08H
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Chapter 23
µPD78F0828A and Memory Definition
23.3 Self-Programming and Oscillation Control Register
The µPD78F0828A allows users to reduce the power consumption in HALT mode by a selection of the
clock supply of the flash memory.
The SPOC register is set with an 8-bit memory manipulation instruction.
RESET signal input sets SPOC to 08H.
Figure 23-3:
Self-Programming and Oscillation Control Register Format
Symbol
7
6
5
4
3
2
SPOC
0
0
0
0
0
0
390
1
0
HCSEL1 HCSEL0
HCSEL1
HCSEL0
HALT Mode Clock Select
0
0
fX/24 (500 KHz)
0
1
fX/25 (250 KHz)
1
0
fX/26 (125 KHz)
1
1
fX/27 (62.5 KHz)
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Address After Reset R/W
FF51H
08H
R/W
Chapter 23 µPD78F0828A and Memory Definition
23.4 Flash memory programming with flash programmer
On-board writing of flash memory (with device mounted on target system) is supported.
On-board writing is done after connecting a dedicated flash writer to the host machine and the target
system.
Moreover, writing to flash memory can also be performed using a flash memory writing adapter connected to flash programmer.
23.4.1 Selection of transmission method
Writing to flash memory is performed using flash programmer and serial communication. Select the
transmission method for writing from Table 23-5. For the selection of the transmission method, a format
like the one shown in Figure 23-4 is used. The transmission methods are selected with the VPP pulse
numbers shown in Table 23-5.
Table 23-5:
Transmission Method List
Number of
Channels
Pin Used
Number of
VPP Pulses
3-wire serial I/O (SIO30)
1
SI30/P37, SO30/P36, SCK30/P35
0
3-wire serial I/O (SIO30) with Handshake
1
SI30/P37, SO30/P36, SCK30/P35,
Handshake/P34
3
UART
1
RXD0/P62, TXD0/P63
8
Transmission Method
Cautions: 1. Be sure to select the number of VPP pulses shown in Table 23-5 for the transmission method.
2. If performing write operations to flash memory with the UART transmission
method, set the main system clock oscillation frequency to 3 MHz or higher.
Figure 23-4:
Transmission Method Selection Format
V PP pulses
10 V
V PP
VDD
V SS
VDD
RESET
Flash write mode
VSS
23.4.2 Initialization of the programming mode
When VPP reaches up to 10 V with RESET terminal activated, on-board programming mode becomes
available.
After release of RESET, the programming mode is selected by the number of VPP pulses.
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µPD78F0828A and Memory Definition
23.4.3 Flash memory programming function
Flash memory writing is performed through command and data transmit/receive operations using the
selected transmission method. The main functions are listed in Table 23-6.
Table 23-6:
Main Functions of Flash Memory Programming
Function
392
Description
Reset
Detects write stop and transmission synchronization
Chip verify
Compares the entire memory contents and input data
Chip internal verify
Compares the entire memory contents internally
Chip blank check
Checks the deletion status of the entire flash memory
High-speed write
Performs writing to the flash memory according to the write start address
and the number of write data (bytes)
Continuous write
Performs successive write operations using the data input with highspeed write operation
Chip pre-write
Performs the write operation with 00H to the entire flash memory
Area verify
Compares the entire flash area contents and input data
Area internal verify
Compares the entire flash area contents internally
Area erase
Erases the entire flash area
Area write back
Performs the write back function after the erase of the flash area
Area blank check
Checks the deletion status of the entire flash area
Area pre-write
Performs the write operation with 00H to the entire flash area
Oscillation frequency setting
Inputs the resonator oscillation frequency information
Erase time setting
Defines the flash memory erase time
Baudrate setting
Sets the transmission rate when the UART method is used
Write back time setting
Defines the flash memory write back time
Silicon signature read
Outputs the device name, memory capacity, and device block information
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Chapter 23 µPD78F0828A and Memory Definition
23.4.4 Flash programmer connection
Connection of flash programmer and µPD78F0828A differs depending on communication method
(3-wire serial I/O, UART). Each case of connection shows in Figures 23-5, 23-6 and 23-7.
Figure 23-5:
Connection of using the 3-Wire SIO30 Method
Flash programmer
Figure 23-6:
µPD78F0828A
VPP
VPP
VDD
VDD
RESET
RESET
SCK
SCK30
SO
SI30
SI
SO30
GND
VSS
CLK
X1
Connection of using the 3-Wire SIO30 Method with Handshake
Flash programmer
µPD78F0828A
VPP
VPP
VDD
VDD
RESET
RESET
SCK
SCK30
SO
SI30
SI
SO30
Reserved
P34
GND
VSS
CLK
X1
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Chapter 23
µPD78F0828A and Memory Definition
Figure 23-7:
Connection of using the UART Method
Flash programmer
µPD78F0828A
VPP
VPP
VDD
VDD
RESET
RESET
SO
RXD0
SI
TXD0
GND
VSS
CLK
X1
VPP
:
Programming voltage applied from the on-board programming tool.
RESET
:
A RESET is generated and the device is set to the on-board programming mode.
System clock
CLK, X1
:
:
The CPU clock for the device CLK may be supplied by the on-board program tool.
Alternatively the crystal or ceramic oscillator on the target H/W can be used in the
on-board programming mode. The external system clock has to be connected with
the X1 pin on the device.
VDD
:
The power supply for the device may be supplied by the on-board program tool.
Alternatively the power supply on the target H/W can be used in the on-board
programming mode.
GND
:
Ground level VSS.
SCK30
:
Serial clock generated by the on-board programming tool.
SI30
:
Serial data sent by the on-board programming tool.
SO30
:
Serial data sent by the device.
RXD
:
Serial data sent by the on-board programming tool.
TXD
:
Serial data sent by the device.
HS
:
Handshake line.
23.4.5 Flash programming precautions
• Please make sure that the signals used by the on-board programming tool do not conflict with
other devices on the target H/W.
• A read functionality is not supported because of software protection. Only a verify operation of
the whole Flash EPROM is supported. In verify mode data from start address to final address
has to be supplied by the programming tool. The device compares each data with on-chip flash
content and replies with a signal for O.K. or not O.K.
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Chapter 23 µPD78F0828A and Memory Definition
23.5 Flash Self-Programming Control
The µPD78F0828A provides the secure self-programming with real-time support. further details are
provided in an application note (U14995E).
23.5.1 Flash Self-Programming Mode Control Register
The flash programming mode control register allows to enable/disable the self-programming mode of
the µPD78F0828A.
The FLPMC register is set with an 8-bit memory manipulation instruction.
RESET input sets FLPMC to 08H.
Figure 23-8:
Symbol
FLPMC
7
0
6
0
Flash Self-Programming Mode Control Register Format
5
4
0
0
VPP
Remark:
2
1
0
1
VPP
0
FLSPM0
Address After Reset R/W
FF50H
08H
R/W
Programming Voltage Detected
0
No
1
Yes
FLSPM0
3
Self-Programming Mode Selection
0
Normal operation mode
1
Self-programming mode
The bit VPP is a read-only flag.
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Chapter 24 Instruction Set
This chapter describes each instruction set of the µPD780828A subseries as list table.
For details of its operation and operation code, refer to the separate document “78K/0 series USER’S
MANUAL - Instruction (U12326E).”
24.1 Legends Used in Operation List
24.1.1 Operand identifiers and description methods
Operands are described in “Operand” column of each instruction in accordance with the description
method of the instruction operand identifier (refer to the assembler specifications for detail). When there
are two or more description methods, select one of them. Alphabetic letters in capitals and symbols,
#, !, $ and [ ] are key words and must be described as they are. Each symbol has the following meaning.
• # : Immediate data specification
• !
: Absolute address specification
• $ : Relative address specification
• [ ] : Indirect address specification
In the case of immediate data, describe an appropriate numeric value or a label. When using a label, be
sure to describe the #, !, $, and [ ] symbols.
For operand register identifiers, r and rp, either function names (X, A, C, etc.) or absolute names
(names in parentheses in the table below, R0, R1, R2, etc.) can be used for description.
Table 24-1:
Operand Identifiers and Description Methods
Identifier
Description Method
r
X (R0), A (R1), C (R2), B (R3), E (R4), D (R5), L (R6), H (R7)
rp
AX (RP0), BC (RP1), DE (RP2), HL (RP3)
sfr
Special-function register symbolNote
sfrp
Special-function register symbol (16-bit manipulatable register even addresses only)Note
saddr
FE20H-FF1FH Immediate data or labels
saddrp
FE20H-FF1FH Immediate data or labels (even address only)
addr16
0000H-FFFFH Immediate data or labels
(Only even addresses for 16-bit data transfer instructions)
addr11
0800H-0FFFH Immediate data or labels
addr5
0040H-007FH Immediate data or labels (even address only)
word
16-bit immediate data or label
byte
8-bit immediate data or label
bit
3-bit immediate data or label
RBn
RB0 to RB3
Note: Addresses from FFD0H to FFDFH cannot be accessed with these operands.
Remark:
For special-function register symbols, refer to Table 3-5, “Special Function Register
List,” on page 67.
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Chapter 24
Instruction Set
24.1.2 Description of “operation” column
A
: A register; 8-bit accumulator
X
: X register
B
: B register
C
: C register
D
: D register
E
: E register
H
: H register
L
: L register
AX
: AX register pair; 16-bit accumulator
BC
: BC register pair
DE
: DE register pair
HL
: HL register pair
PC
: Program counter
SP
: Stack pointer
PSW
: Program status word
CY
: Carry flag
AC
: Auxiliary carry flag
Z
: Zero flag
RBS
: Register bank select flag
IE
: Interrupt request enable flag
NMIS : Non-maskable interrupt servicing flag
()
: Memory contents indicated by address or register contents in parentheses
XH, XL : Higher 8 bits and lower 8 bits of 16-bit register
: Logical product (AND)
: Logical sum (OR)
: Exclusive logical sum (exclusive OR)
——:
Inverted data
addr16 : 16-bit immediate data or label
jdisp8 : Signed 8-bit data (displacement value)
25.1.3 Description of “flag operation” column
(Blank) : Not affected
0
: Cleared to 0
1
: Set to 1
X
: Set/cleared according to the result
R
: Previously saved value is restored
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Chapter 24 Instruction Set
24.2 Operation List
Table 24-2:
Instruction
Mnemonic
Group
MOV
8-bit data
transfer
XCH
Operands
Byte
Operation List (1/8)
Clock
Operation
Note 1
Note 2
r, #byte
2
4
-
r← byte
saddr, #byte
3
6
7
(saddr) ← byte
sfr, #byte
3
-
7
str ← byte
A, r Note 3
1
2
-
A←r
r, A Note 3
1
2
-
r←A
A, saddr
2
4
5
A ←(saddr)
saddr, A
2
4
5
(saddr) ← A
A, sfr
2
-
5
A ← sfr
sfr, A
2
-
5
sfr ← A
A, !addr16
3
8
9+n
!addr16, A
3
8
9 + m (addr16) ← A
PSW, #byte
3
-
7
Flag
Z AC CY
A ← (addr16)
PSW ← byte
A, PSW
2
-
5
A ← PSW
PSW, A
2
-
5
PSW ← A
A ← (DE)
A, [DE]
1
4
5+n
[DE], A
1
4
5 + m (DE) ← A
×
×
×
×
×
×
A ← (HL)
A, [HL]
1
4
5+n
[HL], A
1
4
5 + m (HL) ← A
A ← (HL + byte)
A, [HL + byte]
2
8
9+n
[HL + byte], A
2
8
9 + m (HL + byte) ← A
A ← (HL + B)
A, [HL + B]
1
6
7+n
[HL + B], A
1
6
7 + m (HL + B) ← A
A ← HL + C)
A, [HL + C]
1
6
7+n
[HL + C], A
1
6
7 + m (HL + C) ← A
A, r Note 3
1
2
-
A↔r
A, saddr
2
4
6
A ↔ (saddr)
A, sfr
2
-
6
A ↔ (sfr)
A, !addr16
3
8
10+n+m A ↔ (addr16)
A, [DE]
1
4
6+n+m A ↔ (DE)
A, [HL]
1
4
6+n+m A ↔ (HL)
A, [HL + byte]
2
8
10+n+m A ↔ (HL + byte)
A, [HL + B]
2
8
10+n+m A ↔ (HL + B)
A, [HL + C]
2
8
10+n+m A ↔ (HL + C)
Notes: 1. When the internal high-speed RAM area is accessed or instruction with no data access
2. When an area except the internal high-speed RAM area is accessed.
3. Except “r = A”
4. Only when rp = BC, DE or HL
Remarks: 1. One instruction clock cycle is one cycle of the CPU clock (fCPU) selected by the PCC register.
2. This clock cycle applies to internal ROM program.
3. n is the number of waits when external memory expansion area is read from.
4. m is the number of waits when external memory expansion area is written to.
User’s Manual U16504EE1V1UD00
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Chapter 24
Table 24-2:
Instruction
Mnemonic
Group
16-bit data MOVW
transfer
Operands
8-bit
operation
Operation
Note 2
3
6
-
4
8
10
Flag
Z AC CY
rp ← word
(saddrp) ← word
sfrp, #word
4
-
10
sfrp ← word
AX, saddrp
2
6
8
AX ← (saddrp)
saddrp, AX
2
6
8
(saddrp) ← AX
AX, sfrp
2
-
8
AX ← sfrp
sfrp, AX
2
-
8
sfrp ← AX
Note 4
1
4
-
AX ← rp
rp, AX Note 4
1
4
-
rp ← AX
AX, !addr16
3
10
12 + 2n AX ← (addr16)
!addr16, AX
3
10
12 + 2m (addr16) ← AX
1
4
-
AX × rp
A, #byte
2
4
-
A, CY ← A + byte
×
×
×
saddr, #byte
3
6
8
(saddr), CY ← (saddr) + byte
×
×
×
2
4
-
A, CY ← A + r
×
×
×
AX,
rp Note 4
Note 3
r, A
2
4
-
r, CY ← r + A
×
×
×
A, saddr
2
4
5
A, CY ← A + (saddr)
×
×
×
A, !addr16
3
8
9+n
A, CY ← A + (addr16)
×
×
×
A, [HL]
1
4
5+n
A, CY ← A + (HL)
×
×
×
A, [HL + byte]
2
8
9+n
A, CY ← A + (HL + byte)
×
×
×
A, [HL + B]
2
8
9+n
A, CY ← A + (HL + B)
×
×
×
A, [HL + C]
2
8
9+n
A, CY ← A + (HL + C)
×
×
×
A, #byte
2
4
-
A, CY ← A + byte + CY
×
×
×
saddr, #byte
3
6
8
(saddr), CY ← (saddr) + byte + CY
×
×
×
2
4
-
A, CY ← A + r + CY
×
×
×
r, A
2
4
-
r, CY ← r + A + CY
×
×
×
A, saddr
2
4
5
A, CY ← A + (saddr) + CY
×
×
×
A, !addr16
3
8
9+n
A, CY ← A + (addr16) + CY
×
×
×
A, r
ADDC
Clock
Note 1
saddrp, #word
A, r
ADD
Operation List (2/8)
rp, #word
AX, rp
XCHW
Byte
Instruction Set
Note 3
A, [HL]
1
4
5+n
A, CY ← A + (HL) + CY
×
×
×
A, [HL + byte]
2
8
9+n
A, CY ← A + (HL + byte) + CY
×
×
×
A, [HL + B]
2
8
9+n
A, CY ← A + (HL + B) + CY
×
×
×
A, [HL + C]
2
8
9+n
A, CY ← A + (HL + C) + CY
×
×
×
Notes: 1. When the internal high-speed RAM area is accessed or instruction with no data access
2. When an area except the internal high-speed RAM area is accessed.
3. Except “r = A”
4. Only when rp = BC, DE or HL
Remarks: 1. One instruction clock cycle is one cycle of the CPU clock (fCPU) selected by the PCC register.
2. This clock cycle applies to internal ROM program.
3. n is the number of waits when external memory expansion area is read from.
4. m is the number of waits when external memory expansion area is written to.
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Chapter 24 Instruction Set
Table 24-2:
Instruction
Mnemonic
Group
Operands
2
4
-
A, CY ← A - byte
×
×
×
6
8
(saddr), CY ← (saddr) - byte
×
×
×
2
4
-
A, CY ← A - r
×
×
×
Note 3
r, A
2
4
-
r, CY ← r - A
×
×
×
A, saddr
2
4
5
A, CY ← A - (saddr)
×
×
×
A, !addr16
3
8
9+n
A, CY ← A - (addr16)
×
×
×
A, [HL]
1
4
5+n
A, CY ← A - (HL)
×
×
×
A, [HL + byte]
2
8
9+n
A, CY ← A - (HL + byte)
×
×
×
A, [HL + B]
2
8
9+n
A, CY ← A - (HL + B)
×
×
×
A, [HL + C]
2
8
9+n
A, CY ← A - (HL + C)
×
×
×
A, #byte
2
4
-
A, CY ← A - byte - CY
×
×
×
saddr, #byte
3
6
8
(saddr), CY ← (saddr) - byte - CY
×
×
×
2
4
-
A, CY ← A - r - CY
×
×
×
2
4
-
r, CY ← r - A - CY
×
×
×
Note 3
A, saddr
2
4
5
A, CY ← A - (saddr) - CY
×
×
×
A, !addr16
3
8
9+n
A, CY ← A - (addr16) - CY
×
×
×
A, [HL]
1
4
5+n
A, CY ← A - (HL) - CY
×
×
×
A, [HL + byte]
2
8
9+n
A, CY ← A - (HL + byte) - CY
×
×
×
A, [HL + B]
2
8
9+n
A, CY ← A - (HL + B) - CY
×
×
×
A, [HL + C]
2
8
9+n
A, CY ← A - (HL + C) - CY
×
×
×
A, #byte
2
4
-
A ← A ∧ byte
×
saddr, #byte
3
6
8
(saddr) ← (saddr) ∧ byte
×
2
4
-
A←A∧r
×
A, r
AND
Flag
Z AC CY
3
r, A
SUBC
Operation
Note 2
A, #byte
A, r
8-bit
operation
Clock
Note 1
saddr, #byte
A, r
SUB
Byte
Operation List (3/8)
Note 3
r, A
2
4
-
r←r∧A
×
A, saddr
2
4
5
A ← A ∧ (saddr)
×
A, !addr16
3
8
9+n
A ← A ∧ (addr16)
×
A, [HL]
1
4
5+n
A ← A ∧ (HL)
×
A, [HL + byte]
2
8
9+n
A ← A ∧ (HL + byte)
×
A, [HL + B]
2
8
9+n
A ← A ∧ (HL + B)
×
A, [HL + C]
2
8
9+n
A ← A ∧ (HL + C)
×
Notes: 1. When the internal high-speed RAM area is accessed or instruction with no data access
2. When an area except the internal high-speed RAM area is accessed.
3. Except “r = A”
4. Only when rp = BC, DE or HL
Remarks: 1. One instruction clock cycle is one cycle of the CPU clock (fCPU) selected by the PCC register.
2. This clock cycle applies to internal ROM program.
3. n is the number of waits when external memory expansion area is read from.
4. m is the number of waits when external memory expansion area is written to.
User’s Manual U16504EE1V1UD00
401
Chapter 24
Table 24-2:
Instruction
Mnemonic
Group
Operands
XOR
ADDW
16-bit
operation
Multiply/
divide
Operation
Note 2
Flag
Z AC CY
2
4
-
A ← A ∨ byte
×
3
6
8
(saddr) ← (saddr) ∨ byte
×
2
4
-
A←A∨r
×
Note 3
r, A
2
4
-
r←r∨A
×
A, saddr
2
4
5
A ← A ∨ (saddr)
×
A, !addr16
3
8
9+n
A ← A ∨ (addr16)
×
A, [HL]
1
4
5+n
A ← A ∨ (HL)
×
A, [HL + byte]
2
8
9+n
A ← A ∨ (HL + byte)
×
A, [HL + B]
2
8
9+n
A ← A ∨ (HL + B)
×
A, [HL + C]
2
8
9+n
A ← A ∨ (HL + C)
×
A, #byte
2
4
-
A ← A ∨ byte
×
saddr, #byte
3
6
8
(saddr) ← (saddr) ∨ byte
×
2
4
-
A←A∨r
×
r, A
2
4
-
r←r∨A
×
A, saddr
2
4
5
A ← A ∨ (saddr)
×
A, !addr16
3
8
9+n
A ← A ∨ (addr16)
×
Note 3
A, [HL]
1
4
5+n
A ← A ∨ (HL)
×
A, [HL + byte]
2
8
9+n
A ← A ∨ (HL + byte)
×
A, [HL + B]
2
8
9+n
A ← A ∨ (HL + B)
×
A, [HL + C]
2
8
9+n
A ← A ∨ (HL + C)
×
A, #byte
2
4
-
A - byte
×
×
×
saddr, #byte
3
6
8
(saddr) - byte
×
×
×
2
4
-
AA - r
×
×
×
A, r
CMP
Clock
Note 1
saddr, #byte
A, r
8-bit
operation
Operation List (4/8)
A, #byte
A, r
OR
Byte
Instruction Set
Note 3
r, A
2
4
-
r-A
×
×
×
A, saddr
2
4
5
A - (saddr)
×
×
×
A, !addr16
3
8
9+n
A - (addr16)
×
×
×
A, [HL]
1
4
5+n
A - (HL)
×
×
×
A, [HL + byte]
2
8
9+n
A - (HL + byte)
×
×
×
A, [HL + B]
2
8
9+n
A - (HL + B)
×
×
×
A - (HL + C)
×
×
×
AX, CY ← AX + word
×
×
×
A, [HL + C]
2
8
9+n
AX, #word
3
6
-
SUBW
AX, #word
3
6
-
AX, CY ← AX - word
×
×
×
CMPW
AX, #word
3
6
-
AX – word
×
×
×
MULU
X
2
16
-
AX ← A x X
DIVUW
C
2
25
-
AX (Quotient), C (Remainder) ← AX ÷ C
Notes: 1. When the internal high-speed RAM area is accessed or instruction with no data access
2. When an area except the internal high-speed RAM area is accessed.
3. Except “r = A”
4. Only when rp = BC, DE or HL
Remarks: 1. One instruction clock cycle is one cycle of the CPU clock (fCPU) selected by the PCC register.
2. This clock cycle applies to internal ROM program.
3. n is the number of waits when external memory expansion area is read from.
4. m is the number of waits when external memory expansion area is written to.
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Chapter 24 Instruction Set
Table 24-2:
Instruction
Mnemonic
Group
INC
Byte
Clock
Note 1
Operation
Note 2
Flag
Z AC CY
r
1
2
-
r←r+1
×
×
saddr
2
4
6
(saddr) ← (saddr) + 1
×
×
r
1
2
-
r←r–1
×
×
saddr
2
4
6
(saddr) ← (saddr) – 1
×
×
INCW
rp
1
4
-
rp ← rp + 1
DECW
rp
1
4
-
rp ← rp - 1
ROR
A, 1
1
2
-
(CY, A7 ← A0, Am – 1 ← Am) x 1 time
×
ROL
A, 1
1
2
-
(CY, A0 ← A7, Am + 1 ← Am) x 1 time
×
×
×
Increment/
DEC
decrement
Rotate
Operands
Operation List (5/8)
RORC
A, 1
1
2
-
(CY ← A0, A7 ← CY, Am – 1 ← Am) x 1
time
ROLC
A, 1
1
2
-
(CY ← A7, A0 ← CY, Am + 1 ← Am) x 1
time
ROR4
[HL]
2
10
12+n+m
A3 – 0 ← (HL)3 – 0, (HL)7 – 4 ← A3 – 0,
(HL)3 – 0 ← (HL)7 – 4
ROL4
[HL]
A3 – 0 ← (HL)7 – 4, (HL)3 – 0 ← A3 – 0,
(HL)7 – 4 ← (HL)3 – 0
ADJBA
2
4
-
Decimal Adjust Accumulator after
Addition
×
×
×
ADJBS
2
4
-
Decimal Adjust Accumulator after Sub×
tract
×
×
BCD adjust
MOV1
Bit
manipulate
AND1
CY, saddr.bit
3
6
7
CY ← saddr.bit)
×
CY, sfr.bit
3
-
7
CY ← sfr.bit
×
CY, A.bit
2
4
-
CY ← A.bit
×
CY, PSW.bit
3
-
7
CY ← PSW.bit
×
CY, [HL].bit
2
6
7+n
CY ← (HL).bit
×
saddr.bit, CY
3
6
8
(saddr.bit) ← CY
sfr.bit, CY
3
-
8
sfr.bit ← CY
A.bit, CY
2
4
-
A.bit ← CY
PSW.bit, CY
3
-
8
PSW.bit ← CY
×
×
8+n+m (HL).bit ← CY
[HL].bit, CY
2
6
CY, saddr.bit
3
6
7
CY ← CY ∧ saddr.bit)
×
CY, sfr.bit
3
-
7
CY ← CY ∧ sfr.bit
×
CY, A.bit
2
4
-
CY ← CY ∧ A.bit
×
CY, PSW.bit
3
-
7
CY ← CY ∧ PSW.bit
×
CY, [HL].bit
2
6
7+n
CY ← CY ∧ (HL).bit
×
Notes: 1. When the internal high-speed RAM area is accessed or instruction with no data access
2. When an area except the internal high-speed RAM area is accessed.
3. Except “r = A”
4. Only when rp = BC, DE or HL
Remarks: 1. One instruction clock cycle is one cycle of the CPU clock (fCPU) selected by the PCC register.
2. This clock cycle applies to internal ROM program.
3. n is the number of waits when external memory expansion area is read from.
4. m is the number of waits when external memory expansion area is written to.
User’s Manual U16504EE1V1UD00
403
Chapter 24
Table 24-2:
Instruction
Mnemonic
Group
OR1
XOR1
Bit
manipulate
SET1
CLR1
Operands
Byte
Instruction Set
Operation List (6/8)
Clock
Note 1
Operation
Note 2
Flag
Z AC CY
CY, saddr.bit
3
6
7
CY ← CY ∨ saddr.bit)
×
CY, sfr.bit
3
-
7
CY ← CY ∨ sfr.bit
×
CY, A.bit
2
4
-
CY ← CY ∨ A.bit
×
CY, PSW.bit
3
-
7
CY ← CY ∨ PSW.bit
×
CY ← CY ∨ (HL).bit
×
CY ← CY ∨ saddr.bit)
×
CY, [HL].bit
2
6
7+n
CY, saddr.bit
3
6
7
CY, sfr.bit
3
-
7
CY ← CY ∨ sfr.bit
×
CY, A.bit
2
4
-
CY ← CY ∨ A.bit
×
CY, PSW.bit
3
-
7
CY ← CY ∨ PSW.bit
×
CY, [HL].bit
2
6
7+n
CY ← CY ∨ (HL).bit
×
saddr.bit
2
4
6
(saddr.bit) ← 1
sfr.bit
3
-
8
sfr.bit ← 1
A.bit
2
4
-
A.bit ← 1
PSW.bit
2
-
6
PSW.bit ← 1
[HL].bit
2
6
saddr.bit
2
4
6
×
×
×
×
×
×
8+n+m (HL).bit ← 1
(saddr.bit) ← 0
sfr.bit
3
-
8
sfr.bit ← 0
A.bit
2
4
-
A.bit ← 0
6
PSW.bit ← 0
PSW.bit
2
-
[HL].bit
2
6
SET1
CY
1
2
-
CY ← 1
1
CLR1
CY
1
2
-
CY ← 0
0
NOT1
CY
1
2
-
CY ← CY
×
8+n+m (HL).bit ← 0
Notes: 1. When the internal high-speed RAM area is accessed or instruction with no data access
2. When an area except the internal high-speed RAM area is accessed.
3. Except “r = A”
4. Only when rp = BC, DE or HL
Remarks: 1. One instruction clock cycle is one cycle of the CPU clock (fCPU) selected by the PCC register.
2. This clock cycle applies to internal ROM program.
3. n is the number of waits when external memory expansion area is read from.
4. m is the number of waits when external memory expansion area is written to.
404
User’s Manual U16504EE1V1UD00
Chapter 24 Instruction Set
Table 24-2:
Instruction
Mnemonic
Group
Operands
Byte
Operation List (7/8)
Clock
Note 1
Note 2
CALL
!addr16
3
7
-
(SP – 1) ←(PC + 3)H, (SP – 2) ← (PC
+ 3)L, PC ←addr16, SP ←SP – 2
CALLF
!addr11
2
5
-
(SP – 1) ←(PC + 2)H, (SP – 2) ← (PC
+ 2)L, PC15 – 11 ← 00001, PC10 – 0 ←
addr11, SP ← SP – 2
-
(SP – 1) ← (PC + 1)H, (SP – 2) ← (PC
+ 1)L, PCH ← (00000000, addr5 + 1),
PCL ← (00000000, addr5), SP ← SP –
2
CALLT
[addr5]
1
6
Call/return
BRK
1
6
-
RET
1
6
-
PCH ← (SP + 1), PCL ← (SP),SP ←
SP + 2
RETI
1
6
-
PCH ← (SP + 1), PCL ← (SP), PSW
R
← (SP + 2), SP ← SP + 3, NMIS ← 0
R
R
RETB
1
6
-
PCH ← (SP + 1), PCL ← (SP), PSW
← (SP + 2), SP ← SP + 3
R
R
R
PSW
1
2
-
(SP – 1) ← PSW, SP ← SP – 1
rp
1
4
-
(SP – 1) ← rpH, (SP – 2) ← rpL, SP ←
PSW
1
2
-
SP – 2
PSW ← (SP), SP ← SP + 1
R
R
R
rp
1
4
-
rpH ← (SP + 1), rpL ← (SP), SP ← SP
SP, #word
4
-
10
+2
SP ← word
SP, AX
2
-
8
SP ← AX
AX, SP
2
-
8
AX ← SP
!addr16
3
6
-
PC ← addr16
$addr16
2
6
-
PC ← PC + 2 + jdisp8
AX
2
8
-
PCH ← A, PCL ← X
BC
$addr16
2
6
-
PC ← PC + 2 + jdisp8 if CY = 1
BNC
$addr16
2
6
-
PC ← PC + 2 + jdisp8 if CY = 0
BZ
$addr16
2
6
-
PC ← PC + 2 + jdisp8 if Z = 1
BNZ
$addr16
2
6
-
PC ← PC + 2 + jdisp8 if Z = 0
Stack
manipulate POP
MOVW
Conditional
branch
Flag
Z AC CY
(SP – 1) ← PSW, (SP – 2) ← (PC +
1)H, (SP – 3) ← (PC + 1)L, PCH ←
(003FH), PCL ← (003EH), SP ← SP –
3, IE ← 0
PUSH
Unconditional
branch
Operation
BR
Notes: 1. When the internal high-speed RAM area is accessed or instruction with no data access
2. When an area except the internal high-speed RAM area is accessed.
3. Except “r = A”
4. Only when rp = BC, DE or HL
Remarks: 1. One instruction clock cycle is one cycle of the CPU clock (fCPU) selected by the PCC register.
2. This clock cycle applies to internal ROM program.
3. n is the number of waits when external memory expansion area is read from.
4. m is the number of waits when external memory expansion area is written to.
User’s Manual U16504EE1V1UD00
405
Chapter 24
Table 24-2:
Instruction
Mnemonic
Group
BT
BF
Operands
Byte
Instruction Set
Operation List (8/8)
Clock
Note 1
Operation
Note 2
saddr.bit, $addr16
3
8
9
PC ← PC + 3 + jdisp8 if(saddr.bit) = 1
sfr.bit, $addr16
4
-
11
PC ← PC + 4 + jdisp8 if sfr.bit = 1
A.bit, $addr16
3
8
-
PC ← PC + 3 + jdisp8 if A.bit = 1
PSW.bit, $addr16
3
-
9
PC ← PC + 3 + jdisp8 if PSW.bit = 1
[HL].bit, $addr16
3
10
saddr.bit, $addr16
4
10
11
Flag
Z AC CY
11 + n PC ← PC + 3 + jdisp8 if (HL).bit = 1
PC ← PC + 4 + jdisp8 if(saddr.bit) = 0
sfr.bit, $addr16
4
-
11
PC ← PC + 4 + jdisp8 if sfr.bit = 0
A.bit, $addr16
3
8
-
PC ← PC + 3 + jdisp8 if A.bit = 0
PSW.bit, $addr16
4
-
[HL].bit, $addr16
3
10
saddr.bit, $addr16
4
10
11
PC ← PC + 4 + jdisp8 if PSW. bit = 0
11 + n PC ← PC + 3 + jdisp8 if (HL).bit = 0
PC ← PC + 4 + jdisp8
12
if(saddr.bit) = 1
then reset(saddr.bit)
Conditional
branch
sfr.bit, $addr16
4
-
12
PC ← PC + 4 + jdisp8 if sfr.bit = 1
then reset sfr.bit
BTCLR
A.bit, $addr16
3
8
-
PSW.bit, $addr16
4
-
12
PC ← PC + 3 + jdisp8 if A.bit = 1
then reset A.bit
PC ← PC + 4 + jdisp8 if PSW.bit = 1
×
then reset PSW.bit
3
10
B, $addr16
2
6
-
B ← B – 1, then
PC ← PC + 2 + jdisp8 if B ≠ 0
C, $addr16
2
6
-
C ← C –1, then
PC ← PC + 2 + jdisp8 if C ≠ 0
saddr. $addr16
3
8
10
RBn
2
4
-
PC ← PC + 3 + jdisp8 if(saddr) ≠ 0
RBS1, 0 ← n
NOP
1
2
-
No Operation
EI
2
-
6
IE ← 1(Enable Interrupt)
DI
2
-
6
IE ← 0(Disable Interrupt)
DBNZ
SEL
CPU
control
12+n+m PC ← PC + 3 + jdisp8 if (HL).bit = 1
then reset (HL).bit
[HL].bit, $addr16
(saddr) ← (saddr) – 1, then
HALT
2
6
-
Set HALT Mode
STOP
2
6
-
Set STOP Mode
Notes: 1. When the internal high-speed RAM area is accessed or instruction with no data access
2. When an area except the internal high-speed RAM area is accessed.
3. Except “r = A”
4. Only when rp = BC, DE or HL
Remarks: 1. One instruction clock cycle is one cycle of the CPU clock (fCPU) selected by the PCC register.
2. This clock cycle applies to internal ROM program.
3. n is the number of waits when external memory expansion area is read from.
4. m is the number of waits when external memory expansion area is written to.
406
User’s Manual U16504EE1V1UD00
×
×
Chapter 24 Instruction Set
24.3 Instructions Listed by Addressing Type
(1)
8-bit instructions
MOV, XCH, ADD, ADDC, SUB, SUBC, AND, OR, XOR, CMP, MULU, DIVUW, INC, DEC, ROR,
ROL, RORC, ROLC, ROR4, ROL4, PUSH, POP, DBNZ
Table 24-3:
8-bit instructions
2nd Operand
1st Operand
#byte
A
rNote
sfr
saddr !addr16 PSW
[DE]
MOV
MOV MOV
XCH
XCH XCH
ADD
ADD ADD
ADDC
ADDC ADDC
SUB MOV SUB SUB
MOV
MOV
SUBC XCH SUBC SUBC
XCH
AND
AND AND
OR
OR
OR
XOR
XOR XOR
CMP
CMP CMP
A
ADD
ADDC
SUB
SUBC
AND
OR
XOR
CMP
r
MOV
ADD
ADDC
SUB
MOV SUBC
AND
OR
XOR
CMP
[HL]
MOV
XCH
ADD
ADDC
SUB
SUBC
AND
OR
XOR
CMP
MOV
XCH
ADD
ADDC
SUB
SUBC
AND
OR
XOR
CMP
1
None
ROR
ROL
RORC
ROLC
INC
DEC
B, C
DBNZ
sfr
MOV MOV
saddr
MOV
ADD
ADDC
SUB
SUBC
AND
OR
XOR
CMP
!addr16
PSW
[HL + byte]
[HL + B] $addr16
[HL + C]
DBNZ
INC
DEC
MOV
PUSH
POP
MOV MOV
[DE]
MOV
[HL]
MOV
[HL + byte]
[HL + B]
[HL + C]
MOV
ROR4
ROL4
X
MULU
C
DIVU
W
Note: Except r = A
User’s Manual U16504EE1V1UD00
407
Chapter 24
(2)
Instruction Set
16-bit instructions
MOVW, XCHW, ADDW, SUBW, CMPW, PUSH, POP, INCW, DECW
Table 24-4:
2nd Operand
1st Operand
AX
#word
AX
ADDW
SUBW
CMPW
sfrp
MOVW
saddrp
MOVW
!addr16
MOVW
sp
MOVW
sfrp
MOVW
MOVW
saddrp
MOVW
MOVW
None
MOVW
INCW
DECW
PUSH
POP
Note
MOVW
sp
rpNote
MOVW
XCHW
rp
!addr16
16-bit instructions
MOVW
MOVW
MOVW
Note: Only when rp = BC, DE, HL
(3)
Bit manipulation instructions
MOV1, AND1, OR1, XOR1, SET1, CLR1, NOT1, BT, BF, BTCLR
Table 24-5:
2nd Operand
1st Operand
sfr.bit
saddr.bit
PSW.bit
[HL].bit
CY
$addr16
None
A.bit
MOV1
BT
BF
BTCLR
SET1
CLR1
sfr.bit
MOV1
BT
BF
BTCLR
SET1
CLR1
saddr.bit
MOV1
BT
BF
BTCLR
SET1
CLR1
PSW.bit
MOV1
BT
BF
BTCLR
SET1
CLR1
[HL].bit
MOV1
BT
BF
BTCLR
SET1
CLR1
CY
408
A.bit
Bit manipulation instructions
MOV1
AND1
OR1
XOR1
MOV1
AND1
OR1
XOR1
MOV1
AND1
OR1
XOR1
MOV1
AND1
OR1
XOR1
MOV1
AND1
OR1
XOR1
User’s Manual U16504EE1V1UD00
SET1
CLR1
NOT1
Chapter 24 Instruction Set
(4)
Call/instructions/branch instructions
CALL, CALLF, CALLT, BR, BC, BNC, BZ, BNZ, BT, BF, BTCLR, DBNZ
Table 24-6:
2nd Operand
1st Operand
Basic instruction
Call/instructions/branch instructions
AX
BR
!addr16
CALL
BR
!addr11
CALLF
Compound instruction
[addr5]
CALLT
$addr16
BR
BC
BNC
BZ
BNZ
BT
BF
BTCLR
DBNZ
Other instructions
ADJBA, ADJBS, BRK, RET, RETI, RETB, SEL, NOP, EI, DI, HALT, STOP
User’s Manual U16504EE1V1UD00
409
[MEMO]
410
User’s Manual U16504EE1V1UD00
Chapter 25 Electrical Specifications
25.1 Absolute Maximum Ratings
(1)
µPD780824A(A), µPD780826A(A), µPD780828A(A), µPD78F0828A(A)
(TA = 25°C)
Table 25-0:
Parameter
Symbol
Conditions
Rating
VDD
VPP
Supply voltage
µPD78F0828A(A) only
-0.3 to + 11.0
-0.3 to VDD + 0.3
AVSS
-0.3 to + 0.3
SMVDD SMVDD = VDD, VDD = 5 V ± 10%
-0.3 to + 6.0
SMVSS
-0.3 to + 0.3
VI1
Output voltage
VO
Analog input voltage
VAN
P00 - P03, P34 - P37, P40 - P47, P60 - P65,
P80 - P87, P90 - P97, X1, X2, RESET
IOH
P10 to P14
Analog input pin
1 pin P20-P27
-35
Peak
-120
Effective
-80
1 pin P50-P57
-35
Peak
-120
Effective
-80
1 pin except P60, P20-P27, P50-P57
-10
P00 - P03, P34 - P37, P40 - P47, P61 - P65, P80 P87, P90 - P97, CTXD total
-15
Peak
30
Effective
20
1 pin P20-P27
P20-P27 total
35
Peak
Effective
1 pin P50-P57
Note
80
35
120
Effective
80
Peak
20
Effective
10
P00 - P03, P34 - P37, P40 - P47, P61 - Peak
P65, P80 - P87, P90 - P97, CTXD total Effective
50
1 pin except P60, P20-P27, P50-P57
mA
120
Peak
P50-P57 total
Maximum current
AVSS -0.3 to AVDD+0.3
-20
P60
IOL
-0.3 to VDD +0.3
P60
P50-P57 total
Low level output
current
V
-0.3 to VDD +0.3
P20-P27 total
High level output
current
Unit
-0.3 to + 6.0
AVDD/
AVDD = VDD
AVREF
Input voltage
(1/2)
µPD780824A(A),
Total through VDD, SMVDD µPD780826A(A),
µPD780828A(A)
and/or VSS, SMVSS
µPD78F0828A(A)
User’s Manual U16504EE1V1UD00
20
180
200
411
Chapter 25
Electrical Specifications
Table 25-0:
Parameter
Operating ambient
temperature
Storage
temperature
Symbol
Conditions
Unit
-40 to +85
TA
TSTG
Rating
(2/2)
µPD780824A(A), µPD780826A(A),
µPD780828A(A)
-65 to +150
µPD78F0828A(A)
-40 to +125
°C
Note: Effective value should be calculated as follows: [Effective value] = [Peak value] × √duty
Caution:
Product quality may suffer if the absolute maximum ratings are exceeded for even a
single parameter or even momentarily, because the absolute maximum ratings are
rated values at which the product is on the verge of suffering physical damage.
Therefore the product must be used under conditions which ensure that the absolute
maximum ratings are not exceeded.
Remark:
The characteristics of the dual-function pins are the same as those of the port pins unless
otherwise specified.
412
User’s Manual U16504EE1V1UD00
Chapter 25
(2)
Electrical Specifications
µPD780824A(A1), µPD780826A(A1), µPD780828A(A1)
(TA = 25°C)
These specifications are only target values and may not be satisfied by mass-produced
products.
Parameter
Symbol
Conditions
Rating
VDD
-0.3 to + 6.0
AVDD/
AVDD = VDD
AVREF
Supply voltage
-0.3 to + 0.3
SMVDD SMVDD = VDD, VDD = 5 V ± 10%
-0.3 to + 6.0
SMVSS
-0.3 to + 0.3
VI1
Output voltage
VO
Analog input voltage
VAN
High level output
current
IOH
P00 - P03, P34 - P37, P40 - P47, P60 - P65,
P80 - P87, P90 - P97, X1, X2, RESET
IOLNote
P10 to P14
Operating ambient
temperature
Storage
temperature
Analog input pin
-0.3 to VDD +0.3
AVSS -0.3 to AVDD+0.3
1 pin
-10
P00 - P03, P20 - P27, P34 - P37, P40 - P47, P50 P57, P60 - P65, P80 - P87, P90 - P97, CTXD total
-15
Peak
20
Effective
10
P00 - P03, P20 - P27, P34 - P37, P40 - Peak
P47, P50 - P57, P60 - P65, P80 - P87,
Effective
P90 - P97, CTXD total
50
Total through VDD, SMVDD
and/or VSS, SMVSS
Maximum current
V
-0.3 to VDD +0.3
1 pin
Low level output
current
-0.3 to VDD + 0.3
AVSS
Input voltage
Unit
mA
20
40
TA
-40 to +110
TSTG
-65 to +150
°C
Note: Effective value should be calculated as follows: [Effective value] = [Peak value] × √duty
Caution:
Product quality may suffer if the absolute maximum ratings are exceeded for even a
single parameter or even momentarily, because the absolute maximum ratings are
rated values at which the product is on the verge of suffering physical damage.
Therefore the product must be used under conditions which ensure that the absolute
maximum ratings are not exceeded.
Remark:
The characteristics of the dual-function pins are the same as those of the port pins unless
otherwise specified.
User’s Manual U16504EE1V1UD00
413
Chapter 25
(3)
Electrical Specifications
µPD780824A(A2), µPD780826A(A2), µPD780828A(A2)
(TA = 25°C)
These specifications are only target values and may not be satisfied by mass-produced
products.
Parameter
Symbol
Conditions
Rating
VDD
-0.3 to + 6.0
AVDD/
AVDD = VDD
AVREF
Supply voltage
-0.3 to + 0.3
SMVDD SMVDD = VDD, VDD = 5 V ± 10%
-0.3 to + 6.0
SMVSS
-0.3 to + 0.3
VI1
Output voltage
VO
Analog input voltage
VAN
High level output
current
IOH
P00 - P03, P34 - P37, P40 - P47, P60 - P65,
P80 - P87, P90 - P97, X1, X2, RESET
IOLNote
P10 to P14
Operating ambient
temperature
Storage
temperature
Analog input pin
-0.3 to VDD +0.3
AVSS -0.3 to AVDD+0.3
1 pin
-10
P00 - P03, P20 - P27, P34 - P37, P40 - P47, P50 P57, P60 - P65, P80 - P87, P90 - P97, CTXD total
-15
Peak
20
Effective
10
P00 - P03, P20 - P27, P34 - P37, P40 - Peak
P47, P50 - P57, P60 - P65, P80 - P87,
Effective
P90 - P97, CTXD total
50
Total through VDD, SMVDD
and/or VSS, SMVSS
Maximum current
V
-0.3 to VDD +0.3
1 pin
Low level output
current
-0.3 to VDD + 0.3
AVSS
Input voltage
Unit
mA
20
40
TA
-40 to +125
TSTG
-65 to +150
°C
Note: Effective value should be calculated as follows: [Effective value] = [Peak value] × √duty
Caution:
Product quality may suffer if the absolute maximum ratings are exceeded for even a
single parameter or even momentarily, because the absolute maximum ratings are
rated values at which the product is on the verge of suffering physical damage.
Therefore the product must be used under conditions which ensure that the absolute
maximum ratings are not exceeded.
Remark:
The characteristics of the dual-function pins are the same as those of the port pins unless
otherwise specified.
414
User’s Manual U16504EE1V1UD00
Chapter 25
Electrical Specifications
25.2 Capacitance
(1)
µPD780824A(A), µPD780826A(A), µPD780828A(A), µPD78F0828A(A)
(TA = 25°C, VDD = VSS = 0 V)
Parameter
Symbol
Function
Input
CIN
capacitance
f = 1 MHz
Other than measured pins: 0 V
Input/output
CIO
capacitance
P00 to P03, P34 to P37,
P40 to P47, P61 to P65,
P80 to P87, P90 to P97,
f = 1 MHz
Other than measured pins: 0 V CTXD
P60, P20 to P27, P50 to
P57
Remark:
(2)
Min.
Typ.
Max.
Unit
15
pF
15
pF
30
pF
The characteristics of the dual-function pins are the same as those of the port pins unless
otherwise specified.
µPD780824A(A1), µPD780826A(A1), µPD780828A(A1)
(TA = 25°C, VDD = VSS = 0 V)
These specifications are only target values and may not be satisfied by mass-produced
products.
Parameter
Symbol
Function
Input
CIN
capacitance
f = 1 MHz
Other than measured pins: 0 V
Input/output
CIO
capacitance
P00 to P03, P34 to P37,
P40 to P47, P61 to P65,
P80 to P87, P90 to P97,
f = 1 MHz
Other than measured pins: 0 V CTXD
P60, P20 to P27, P50 to
P57
Remark:
Min.
Typ.
Max.
Unit
15
pF
15
pF
30
pF
The characteristics of the dual-function pins are the same as those of the port pins unless
otherwise specified.
User’s Manual U16504EE1V1UD00
415
Chapter 25
(3)
Electrical Specifications
µPD780824A(A2), µPD780826A(A2), µPD780828A(A2)
(TA = 25°C, VDD = VSS = 0 V)
These specifications are only target values and may not be satisfied by mass-produced
products.
Parameter
Symbol
Function
Min.
Typ.
Max.
Unit
Input
CIN
capacitance
f = 1 MHz
Other than measured pins: 0 V
15
pF
Input/output
CIO
capacitance
P00 to P03, P34 to P37,
P40 to P47, P61 to P65,
P80 to P87, P90 to P97,
f = 1 MHz
Other than measured pins: 0 V CTXD
15
pF
P60, P20 to P27, P50 to
P57
30
pF
Remark:
416
The characteristics of the dual-function pins are the same as those of the port pins unless
otherwise specified.
User’s Manual U16504EE1V1UD00
Chapter 25
Electrical Specifications
25.3 Main System Clock Oscillation Circuit Characteristics
(1)
µPD780824A(A), µPD780826A(A), µPD780828A(A), µPD78F0828A(A)
(TA = -40°C to +85°C, VDD = 4.0 to 5.5 V)
Resonator
Recommended Circuit
IC X2
X1
Ceramic
resonator
C2
IC X2
X1
External
clock
Oscillator frequency
(fX) Note 1
Oscillation stabilization time Note 2
C1
X2
Oscillator frequency
(fX) Note 1
Oscillation stabilization time Note 2
C1
Crystal
resonator
C2
Parameter
X1
X1 input frequency
(fX) Note 1
Conditions
MIN.
VDD = 4.0 to 5.5 V
4.0
TYP. MAX.
8.0
After VDD reaches
oscillator voltage
range MIN. 4.0 V
VDD = 4.0 to 5.5 V
4.0
8.0
After VDD reaches
oscillator voltage
range MIN. 4.0 V
VDD = 4.0 to 5.5 V
4.0
X1 input high/low-level
VDD = 4.0 to 5.5 V
width (tXH, tXL)
55
8.0
Unit
8.38
MHz
10
ms
8.38
MHz
10
ms
8.38
MHz
125
ns
open
µPD74HCU04
Notes: 1. Indicates only oscillation circuit characteristics. Refer to “AC Characteristics” for instruction
execution time.
2. Time required to stabilize oscillation after reset or STOP mode release.
Caution:
When using the main system clock oscillation circuit, wiring in the area enclosed
with the broken line should be carried out as follows to avoid an adverse effect from
wiring capacitance.
•
Wiring should be as short as possible.
•
Wiring should not cross other signal lines.
•
Wiring should not be placed close to a varying high current.
•
The potential of the oscillation circuit capacitor ground should always be the
same as that of VSS.
•
Do not ground wiring to a ground pattern in which a high current flows.
•
Do not fetch a signal from the oscillation circuit.
User’s Manual U16504EE1V1UD00
417
Chapter 25
(2)
Electrical Specifications
µPD780824A(A1), µPD780826A(A1), µPD780828A(A1)
(TA = -40°C to +110°C, VDD = 4.0 to 5.5 V)
These specifications are only target values and may not be satisfied by mass-produced
products.
Resonator
Recommended Circuit
IC X2
X1
Ceramic
resonator
C2
IC X2
X1
External
clock
Oscillator frequency
(fX) Note 1
Oscillation stabilization time Note 2
C1
X2
Oscillator frequency
(fX) Note 1
Oscillation stabilization time Note 2
C1
Crystal
resonator
C2
Parameter
X1
X1 input frequency
(fX) Note 1
Conditions
MIN.
VDD = 4.0 to 5.5 V
4.0
TYP. MAX.
8.0
After VDD reaches
oscillator voltage
range MIN. 4.0 V
VDD = 4.0 to 5.5 V
4.0
8.0
After VDD reaches
oscillator voltage
range MIN. 4.0 V
VDD = 4.0 to 5.5 V
4.0
X1 input high/low-level
VDD = 4.0 to 5.5 V
width (tXH, tXL)
55
8.0
Unit
8.38
MHz
10
ms
8.38
MHz
10
ms
8.38
MHz
125
ns
open
µPD74HCU04
Notes: 1. Indicates only oscillation circuit characteristics. Refer to “AC Characteristics” for instruction
execution time.
2. Time required to stabilize oscillation after reset or STOP mode release.
Caution:
418
When using the main system clock oscillation circuit, wiring in the area enclosed
with the broken line should be carried out as follows to avoid an adverse effect from
wiring capacitance.
•
Wiring should be as short as possible.
•
Wiring should not cross other signal lines.
•
Wiring should not be placed close to a varying high current.
•
The potential of the oscillation circuit capacitor ground should always be the
same as that of VSS.
•
Do not ground wiring to a ground pattern in which a high current flows.
•
Do not fetch a signal from the oscillation circuit.
User’s Manual U16504EE1V1UD00
Chapter 25
(3)
Electrical Specifications
µPD780824A(A2), µPD780826A(A2), µPD780828A(A2)
(TA = -40°C to +125°C, VDD = 4.0 to 5.5 V)
These specifications are only target values and may not be satisfied by mass-produced
products.
Resonator
Recommended Circuit
IC X2
X1
Ceramic
resonator
C2
IC X2
X1
External
clock
Oscillator frequency
(fX) Note 1
Oscillation stabilization time Note 2
C1
X2
Oscillator frequency
(fX) Note 1
Oscillation stabilization time Note 2
C1
Crystal
resonator
C2
Parameter
X1
X1 input frequency
(fX) Note 1
Conditions
MIN.
VDD = 4.0 to 5.5 V
4.0
TYP. MAX.
8.0
After VDD reaches
oscillator voltage
range MIN. 4.0 V
VDD = 4.0 to 5.5 V
4.0
8.0
After VDD reaches
oscillator voltage
range MIN. 4.0 V
VDD = 4.0 to 5.5 V
4.0
X1 input high/low-level
VDD = 4.0 to 5.5 V
width (tXH, tXL)
55
8.0
Unit
8.38
MHz
10
ms
8.38
MHz
10
ms
8.38
MHz
125
ns
open
µPD74HCU04
Notes: 1. Indicates only oscillation circuit characteristics. Refer to “AC Characteristics” for instruction
execution time.
2. Time required to stabilize oscillation after reset or STOP mode release.
Caution:
When using the main system clock oscillation circuit, wiring in the area enclosed
with the broken line should be carried out as follows to avoid an adverse effect from
wiring capacitance.
•
Wiring should be as short as possible.
•
Wiring should not cross other signal lines.
•
Wiring should not be placed close to a varying high current.
•
The potential of the oscillation circuit capacitor ground should always be the
same as that of VSS.
•
Do not ground wiring to a ground pattern in which a high current flows.
•
Do not fetch a signal from the oscillation circuit.
User’s Manual U16504EE1V1UD00
419
Chapter 25
Electrical Specifications
25.4 DC Characteristics
(1)
µPD780824A(A), µPD780826A(A), µPD780828A(A), µPD78F0828A(A)
(TA = -40°C to +85°C, VDD = 4.0 to 5.5 V)
Table 25-0:
Parameter
∗
∗
High-level
input voltage
∗
∗
Low-level
input voltage
High-level
output voltage
Low-level
output voltage
High-level input
leakage current
Low-level input
leakage current
420
Symbol
Conditions
MIN.
TYP.
MAX.
VIH1
P00 - P03, P10 - P14, P34 - P37, P40 - P47,
P60 - P65, P80 - P87, P90 - P97, CRXD
0.7 VDD
VDD
VIH2
RESET
0.8 VDD
VDD
VIH4
X1, X2
VDD - 0.5
VDD
VIL1
P00 - P03, P10 - P14, P34 - P37, P40 - P47,
P60 - P65, P80 - P87, P90 - P97, CRXD
0
0.3 VDD
VIL2
RESET
VIL4
X1, X2
VOH1
P00 - P03, P34 - P37,
P40 - P47, P60 - P67,
P80 - P87, P90 - P97,
CTXD
(1/2)
Unit
0.2 VDD
0
VDD = 4.0 - 5.5 V
IOH = -1 mA
4.5 V ≤ SMVDD ≤ 5.5 V
IOH = -27 mA (TA = 85 °C)
IOH = -30 mA (TA = 25 °C)
IOH = -40 mA (TA = -40 °C)
VOH2
P20 - P27,
P50 - P57
VOH3
SGO
VDD = 4.5 - 5.5 V
IOH = -20 mA
VOL1
P00 - P03, P34 - P37,
P40 - P47, P60 - P67,
P80 - P87, P90 - P97,
CTXD
VDD = 4.0 - 5.5 V
IOL = 1.6 mA
4.5 V ≤ SMVDD ≤ 5.5 V
IOL = 27 mA (TA = 85 °C)
IOL = 30 mA (TA = 25 °C)
IOL = 40 mA (TA = -40 °C)
VOL2
P20 - P27,
P50 - P57
VOL3
SGO
ILIH1
P00 - P03, P10 - P14,
P20 - P27, P34 - P37,
P40 - P47, P50 - P57,
P60 - P67, P80 - P87,
P90 - P97, RESET,
CRXD, ANI10 -ANI14
ILIH2
X1, X2
ILIL1
P00 - P03, P10 - P14,
P20 - P27, P34 - P37,
P40 - P47, P50 - P57,
P60 - P67, P80 - P87,
P90 - P97, RESET,
CRXD, ANI10 -ANI14
IILIL2
X1, X2
0.4
VDD - 1.0
VDD - 0.5
VDD -0.07
V
VDD - 0.7
0.4
0.07
VDD = 4.5 - 5.5 V
IOL = 20 mA
VIN = VDD
0.5
0.7
3
20
µA
VIN = 0 V
-3
-20
User’s Manual U16504EE1V1UD00
Chapter 25
Electrical Specifications
Table 25-0:
Parameter
Symbol
High-level output
leakage current
ILOH
VOUT = VDD
3
Low-level output
leakage current
ILOL
VOUT = 0 V
-3
Software pull-up
resistor
R2
VIN = 0 V
Remark:
Conditions
MIN.
TYP.
MAX.
(2/2)
Unit
µA
4.5 V ≤ VDD ≤ 5.5 V
10
30
100
KΩ
The characteristics of the dual-function pins are the same as those of the port pins unless
otherwise specified.
User’s Manual U16504EE1V1UD00
421
Chapter 25
Electrical Specifications
µPD780824A(A), µPD780826A(A), µPD780828A(A)
Parameter
Symbol
Test Conditions
MIN.
fX = 8 MHz, crystal/ceramic oscillation operating
IDD1
mode (PCC = 00H) Note 2
fX = 8 MHz, crystal/ceramic oscillation operating
mode (PCC = 00H) Note 3
Power supply
current Note 1
mode (PCC = 04H) Note 4
fX = 8 MHz, crystal/ceramic oscillation HALT
mode (PCC = 04H) Note 5
IDD5
MAX.
5.5
11
9.5
19
Unit
mA
fX = 8 MHz, crystal/ceramic oscillation HALT
IDD2
TYP.
STOP mode
0.45
0.9
2.5
5
1
30
µA
TYP.
MAX.
Unit
10.5
21
16
32
µPD78F0828A(A)
Parameter
Symbol
Test Conditions
MIN.
fX = 8 MHz, crystal/ceramic oscillation operating
IDD1
mode (PCC = 00H) Note 2
fX = 8 MHz, crystal/ceramic oscillation operating
mode (PCC = 00H) Note 3
Power supply
current Note 1
fX = 8 MHz, crystal/ceramic oscillation HALT
IDD2
mode (PCC = 04H) Note 4
fX = 8 MHz, crystal/ceramic oscillation HALT
mode (PCC = 04H) Note 5
IDD5
STOP mode
mA
0.6
1.2
2.7
5.5
1
30
µA
Notes: 1. Current through VDD0, VDD1 respectively through VSS0, VSS1.
Excluded is the current through the inside pull-up resistors, through AVDD/AVREF, the port
current and the current for the LCD split resistors.
2. CPU is operable.
The other peripherals like: CAN controller, stepper motor C/D, Timer 2, serial interfaces,
sound generator and A/D converter are stopped.
3. CPU and all peripherals (except for the A/D converter) are in operating mode and PCL
output is fX.
4. CPU is in HALT mode and all other peripherals (except watch timer) are stopped.
5. CPU is in HALT mode, but the following peripherals are active:
Timer 2, all other timers, serial interfaces, and PCL output is fX.
Remark:
422
fX: Main system clock oscillation frequency.
The typical values are with respect to TA = 25°C.
User’s Manual U16504EE1V1UD00
Chapter 25
Electrical Specifications
µPD780824A(A), µPD780826A(A), µPD780828A(A), µPD78F0828A(A)
LCD C/D 1/3 Bias Method
Parameter
Symbol
Conditions
MIN.
LCD drive voltage
VLCD
3.0
LCD split resistor
RLCD
5
LCD output voltage
deviation Note (common)
VODC
LCD output voltage
deviation Note (segment)
VODS
IO = ± 5 µA
3.0 V ≤ VLCD ≤ VDD
VLCD0 = VLCD
VLCD1 = VLCD × 2/3
VLCD2 = VLCD1 × 1/3
IO = ± 1 µA
0
TYP.
15
MAX.
Unit
VDD
V
45
KΩ
± 0.2
V
0
± 0.2
Note: The voltage deviation is the difference from the output voltage corresponding to the ideal value
of the segment and common outputs (VLCD).
User’s Manual U16504EE1V1UD00
423
Chapter 25
(2)
Electrical Specifications
µPD780824A(A1), µPD780826A(A1), µPD780828A(A1)
(TA = -40°C to +110°C, VDD = 4.0 to 5.5 V)
These specifications are only target values and may not be satisfied by mass-produced
products.
Table 25-0:
Parameter
∗
∗
High-level
input voltage
∗
∗
Low-level
input voltage
High-level
output voltage
Low-level
output voltage
High-level input
leakage current
Symbol
Conditions
MIN.
TYP.
MAX.
VIH1
P00 - P03, P10 - P14, P34 - P37, P40 - P47,
P60 - P65, P80 - P87, P90 - P97, CRXD
0.7 VDD
VDD
VIH2
RESET
0.8 VDD
VDD
VIH4
X1, X2
VDD - 0.5
VDD
VIL1
P00 - P03, P10 - P14, P34 - P37, P40 - P47,
P60 - P65, P80 - P87, P90 - P97, CRXD
0
0.3 VDD
VIL2
RESET
VIL4
X1, X2
VOH1
P00 - P03, P34 - P37,
P40 - P47, P60 - P67,
P80 - P87, P90 - P97,
CTXD
(1/2)
Unit
0.2 VDD
0
VDD = 4.0 - 5.5 V
IOH = -1 mA
0.4
VDD - 1.0
V
4.5 V ≤ SMVDD ≤ 5.5 V
IOH = -1 mA
VOH2
P20 - P27,
P50 - P57
VOH3
SGO
VDD = 4.5 - 5.5 V
IOH = -1 mA
VOL1
P00 - P03, P34 - P37,
P40 - P47, P60 - P67,
P80 - P87, P90 - P97,
CTXD
VDD = 4.0 - 5.5 V
IOL = 1.6 mA
VOL2
P20 - P27,
P50 - P57
VOL3
SGO
ILIH1
P00 - P03, P10 - P14,
P20 - P27, P34 - P37,
P40 - P47, P50 - P57,
P60 - P67, P80 - P87,
P90 - P97, RESET,
CRXD, ANI10 -ANI14
ILIH2
X1, X2
ILIL1
P00 - P03, P10 - P14,
P20 - P27, P34 - P37,
P40 - P47, P50 - P57,
P60 - P67, P80 - P87,
P90 - P97, RESET,
CRXD, ANI10 -ANI14
IILIL2
X1, X2
4.5 V ≤ SMVDD ≤ 5.5 V
IOL = 1.6 mA
VDD - 0.5
VDD -0.07
VDD - 0.7
0.4
0.07
VDD = 4.5 - 5.5 V
IOL = 1.6 mA
0.4
0.4
10
VIN = VDD
20
µA
Low-level input
leakage current
424
-10
VIN = 0 V
-20
User’s Manual U16504EE1V1UD00
Chapter 25
Electrical Specifications
Table 25-0:
Parameter
Symbol
Conditions
MIN.
TYP.
MAX.
High-level output
leakage current
ILOH
VOUT = VDD
10
Low-level output
leakage current
ILOL
VOUT = 0 V
-10
Software pull-up
resistor
R2
VIN = 0 V
(2/2)
Unit
µA
Remark:
4.5 V ≤ VDD ≤ 5.5 V
10
30
100
KΩ
The characteristics of the dual-function pins are the same as those of the port pins unless
otherwise specified.
User’s Manual U16504EE1V1UD00
425
Chapter 25
Electrical Specifications
µPD780824A(A1), µPD780826A(A1), µPD780828A(A1)
These specifications are only target values and may not be satisfied by mass-produced
products.
Parameter
Symbol
Test Conditions
MIN.
fX = 8 MHz, crystal/ceramic oscillation operating
IDD1
mode (PCC = 00H) Note 2
fX = 8 MHz, crystal/ceramic oscillation operating
mode (PCC = 00H) Note 3
Power supply
current Note 1
fX = 8 MHz, crystal/ceramic oscillation HALT
IDD2
mode (PCC = 04H) Note 4
fX = 8 MHz, crystal/ceramic oscillation HALT
mode (PCC = 04H) Note 5
IDD5
STOP mode
TYP.
MAX.
5.5
12
9.5
20
Unit
mA
0.45
1.9
2.5
6
1
1000
µA
Notes: 1. Current through VDD0, VDD1 respectively through VSS0, VSS1.
Excluded is the current through the inside pull-up resistors, through AVDD/AVREF, the port
current and the current for the LCD split resistors.
2. CPU is operable.
The other peripherals like: CAN controller, stepper motor C/D, Timer 2, serial interfaces,
sound generator and A/D converter are stopped.
3. CPU and all peripherals (except for the A/D converter) are in operating mode and PCL
output is fX.
4. CPU is in HALT mode and all other peripherals (except watch timer) are stopped.
5. CPU is in HALT mode, but the following peripherals are active:
Timer 2, all other timers, serial interfaces, and PCL output is fX.
Remark:
426
fX: Main system clock oscillation frequency.
The typical values are with respect to TA = 25°C.
User’s Manual U16504EE1V1UD00
Chapter 25
Electrical Specifications
µPD780824A(A1), µPD780826A(A1), µPD780828A(A1)
LCD C/D 1/3 Bias Method
These specifications are only target values and may not be satisfied by mass-produced
products.
Parameter
Symbol
Conditions
MIN.
LCD drive voltage
VLCD
3.0
LCD split resistor
RLCD
5
LCD output voltage
deviation Note (common)
VODC
LCD output voltage
deviation Note (segment)
VODS
IO = - 5 µA
3.0 V ≤ VLCD ≤ VDD
VLCD0 = VLCD
VLCD1 = VLCD × 2/3
VLCD2 = VLCD1 × 1/3
IO = - 1 µA
0
TYP.
15
MAX.
Unit
VDD
V
45
KΩ
± 0.2
V
0
± 0.2
Note: The voltage deviation is the difference from the output voltage corresponding to the ideal value
of the segment and common outputs (VLCD).
Caution:
The LCD-C/D cannot be used at high temperature (TA = 110°C).
The maximum temperature is TA = 85°C.
User’s Manual U16504EE1V1UD00
427
Chapter 25
(3)
Electrical Specifications
µPD780824A(A2), µPD780826A(A2), µPD780828A(A2)
(TA = -40°C to +125°C, VDD = 4.0 to 5.5 V)
These specifications are only target values and may not be satisfied by mass-produced
products.
Table 25-0:
Parameter
∗
∗
High-level
input voltage
∗
∗
Low-level
input voltage
High-level
output voltage
Low-level
output voltage
High-level input
leakage current
Symbol
Conditions
MIN.
TYP.
MAX.
VIH1
P00 - P03, P10 - P14, P34 - P37, P40 - P47,
P60 - P65, P80 - P87, P90 - P97, CRXD
0.7 VDD
VDD
VIH2
RESET
0.8 VDD
VDD
VIH4
X1, X2
VDD - 0.5
VDD
VIL1
P00 - P03, P10 - P14, P34 - P37, P40 - P47,
P60 - P65, P80 - P87, P90 - P97, CRXD
0
0.3 VDD
VIL2
RESET
VIL4
X1, X2
VOH1
P00 - P03, P34 - P37,
P40 - P47, P60 - P67,
P80 - P87, P90 - P97,
CTXD
(1/2)
Unit
0.2 VDD
0
VDD = 4.0 - 5.5 V
IOH = -1 mA
0.4
VDD - 1.0
V
4.5 V ≤ SMVDD ≤ 5.5 V
IOH = -1 mA
VOH2
P20 - P27,
P50 - P57
VOH3
SGO
VDD = 4.5 - 5.5 V
IOH = -1 mA
VOL1
P00 - P03, P34 - P37,
P40 - P47, P60 - P67,
P80 - P87, P90 - P97,
CTXD
VDD = 4.0 - 5.5 V
IOL = 1.6 mA
VOL2
P20 - P27,
P50 - P57
VOL3
SGO
ILIH1
P00 - P03, P10 - P14,
P20 - P27, P34 - P37,
P40 - P47, P50 - P57,
P60 - P67, P80 - P87,
P90 - P97, RESET,
CRXD, ANI10 -ANI14
ILIH2
X1, X2
ILIL1
P00 - P03, P10 - P14,
P20 - P27, P34 - P37,
P40 - P47, P50 - P57,
P60 - P67, P80 - P87,
P90 - P97, RESET,
CRXD, ANI10 -ANI14
IILIL2
X1, X2
4.5 V ≤ SMVDD ≤ 5.5 V
IOL = 1.6 mA
VDD - 0.5
VDD -0.07
VDD - 0.7
0.4
0.07
VDD = 4.5 - 5.5 V
IOL = 1.6 mA
0.4
0.4
10
VIN = VDD
20
µA
Low-level input
leakage current
428
-10
VIN = 0 V
-20
User’s Manual U16504EE1V1UD00
Chapter 25
Electrical Specifications
Table 25-0:
Parameter
Symbol
Conditions
MIN.
TYP.
MAX.
High-level output
leakage current
ILOH
VOUT = VDD
10
Low-level output
leakage current
ILOL
VOUT = 0 V
-10
Software pull-up
resistor
R2
VIN = 0 V
(2/2)
Unit
µA
Remark:
4.5 V ≤ VDD ≤ 5.5 V
10
30
100
KΩ
The characteristics of the dual-function pins are the same as those of the port pins unless
otherwise specified.
User’s Manual U16504EE1V1UD00
429
Chapter 25
Electrical Specifications
µPD780824A(A2), µPD780826A(A2), µPD780828A(A2)
These specifications are only target values and may not be satisfied by mass-produced
products.
Parameter
Symbol
Test Conditions
MIN.
fX = 8 MHz, crystal/ceramic oscillation operating
IDD1
mode (PCC = 00H) Note 2
fX = 8 MHz, crystal/ceramic oscillation operating
mode (PCC = 00H) Note 3
Power supply
current Note 1
fX = 8 MHz, crystal/ceramic oscillation HALT
IDD2
mode (PCC = 04H) Note 4
fX = 8 MHz, crystal/ceramic oscillation HALT
mode (PCC = 04H) Note 5
IDD5
STOP mode
TYP.
MAX.
5.5
12
9.5
20
Unit
mA
0.45
1.9
2.5
6
1
1000
µA
Notes: 1. Current through VDD0, VDD1 respectively through VSS0, VSS1.
Excluded is the current through the inside pull-up resistors, through AVDD/AVREF, the port
current and the current for the LCD split resistors.
2. CPU is operable.
The other peripherals like: CAN controller, stepper motor C/D, Timer 2, serial interfaces,
sound generator and A/D converter are stopped.
3. CPU and all peripherals (except for the A/D converter) are in operating mode and PCL
output is fX.
4. CPU is in HALT mode and all other peripherals (except watch timer) are stopped.
5. CPU is in HALT mode, but the following peripherals are active:
Timer 2, all other timers, serial interfaces, and PCL output is fX.
Remark:
430
fX: Main system clock oscillation frequency.
The typical values are with respect to TA = 25°C.
User’s Manual U16504EE1V1UD00
Chapter 25
Electrical Specifications
µPD780824A(A2), µPD780826A(A2), µPD780828A(A2)
LCD C/D 1/3 Bias Method
These specifications are only target values and may not be satisfied by mass-produced
products.
Parameter
Symbol
Conditions
MIN.
LCD drive voltage
VLCD
3.0
LCD split resistor
RLCD
5
LCD output voltage
deviation Note (common)
VODC
LCD output voltage
deviation Note (segment)
VODS
IO = - 5 µA
3.0 V ≤ VLCD ≤ VDD
VLCD0 = VLCD
VLCD1 = VLCD × 2/3
VLCD2 = VLCD1 × 1/3
IO = - 1 µA
0
TYP.
15
MAX.
Unit
VDD
V
45
KΩ
± 0.2
V
0
± 0.2
Note: The voltage deviation is the difference from the output voltage corresponding to the ideal value
of the segment and common outputs (VLCD).
Caution:
The LCD-C/D cannot be used at high temperature (TA = 125°C).
The maximum temperature is TA = 85°C.
User’s Manual U16504EE1V1UD00
431
Chapter 25
Electrical Specifications
25.5 AC Characteristics
25.5.1 Basic Operation
(1)
µPD780824A(A), µPD780826A(A), µPD780828A(A), µPD78F0828A(A)
(TA = -40°C to +85°C, VDD = 4.0 to 5.5 V)
Parameter
Symbol
Test Conditions
MIN.
Cycle time Note 1
TCY
4.0 V ≤ VDD ≤ 5.5 V
TI50, TI51 input frequency
MAX.
Unit
0.25
100
µs
fTI5
0
4
MHz
TI50, TI51 input high/low level
width
tTIH5
tTIL5
100
TI20, TI21, TI22 input high/low
level width
tTIH2
tTIL2
Interrupt input high/low level
width
TINTH
TINTL
ns
3/fSMP2
Note 2
INTP0-2
1
tRSL
RESET low level width
TYP.
µs
10
Notes: 1. The cycle time equals to the minimum instruction execution time.
For example:
1 NOP instruction corresponds to 2 CPU clock cycles (fCPU) selected by the processor clock
control register (PCC).
2. fSMP2 (sampling clock) = fX/8, fX/16, fX/32, fX/64
TCY vs. VDD
60
Cycle time TCY [µ s]
10
Operation guaranteed
range
2.0
1.0
0.5
0.4
0.25
0
1
2
3
4
5
6
Supply voltage VDD [V]
432
User’s Manual U16504EE1V1UD00
Chapter 25
(2)
Electrical Specifications
µPD780824A(A1), µPD780826A(A1), µPD780828A(A1)
(TA = -40°C to +110°C, VDD = 4.0 to 5.5 V)
These specifications are only target values and may not be satisfied by mass-produced
products.
Parameter
Cycle time
Note 1
Symbol
Test Conditions
MIN.
TCY
4.0 V ≤ VDD ≤ 5.5 V
MAX.
Unit
0.25
100
µs
4
MHz
TI50, TI51 input frequency
fTI5
0
TI50, TI51 input high/low level
width
tTIH5
tTIL5
100
TI20, TI21, TI22 input high/low
level width
tTIH2
tTIL2
Interrupt input high/low level
width
TINTH
TINTL
ns
3/fSMP2
Note 2
INTP0-2
1
tRSL
RESET low level width
TYP.
µs
10
Notes: 1. The cycle time equals to the minimum instruction execution time.
For example:
1 NOP instruction corresponds to 2 CPU clock cycles (fCPU) selected by the processor clock
control register (PCC).
2. fSMP2 (sampling clock) = fX/8, fX/16, fX/32, fX/64
TCY vs. VDD
60
Cycle time TCY [µ s]
10
Operation guaranteed
range
2.0
1.0
0.5
0.4
0.25
0
1
2
3
4
5
6
Supply voltage VDD [V]
User’s Manual U16504EE1V1UD00
433
Chapter 25
(3)
Electrical Specifications
µPD780824A(A2), µPD780826A(A2), µPD780828A(A2)
(TA = -40°C to +125°C, VDD = 4.0 to 5.5 V)
These specifications are only target values and may not be satisfied by mass-produced
products.
Parameter
Cycle time
Note 1
Symbol
Test Conditions
MIN.
TCY
4.0 V ≤ VDD ≤ 5.5 V
MAX.
Unit
0.25
100
µs
4
MHz
TI50, TI51 input frequency
fTI5
0
TI50, TI51 input high/low level
width
tTIH5
tTIL5
100
TI20, TI21, TI22 input high/low
level width
tTIH2
tTIL2
Interrupt input high/low level
width
TINTH
TINTL
ns
3/fSMP2
Note 2
INTP0-2
1
tRSL
RESET low level width
TYP.
µs
10
Notes: 1. The cycle time equals to the minimum instruction execution time.
For example:
1 NOP instruction corresponds to 2 CPU clock cycles (fCPU) selected by the processor clock
control register (PCC).
2. fSMP2 (sampling clock) = fX/8, fX/16, fX/32, fX/64
TCY vs. VDD
60
Cycle time TCY [µ s]
10
Operation guaranteed
range
2.0
1.0
0.5
0.4
0.25
0
1
2
3
4
5
6
Supply voltage VDD [V]
434
User’s Manual U16504EE1V1UD00
Chapter 25
Electrical Specifications
25.5.2 Serial Interface
(1)
µPD780824A(A), µPD780826A(A), µPD780828A(A), µPD78F0828A(A)
(TA = -40°C to +85°C, VDD = 4.0 to 5.5 V)
(a) Serial interface Channel CSI (SIO30)
3-wire serial I/O mode (SCK30 Internal clock output)
Parameter
Symbol
Conditions
MIN.
tKCY1
1000
tKH1, tKL1
tKCY1/2 - 50
SI30 setup time (to SCK30) ↑
tSIK1
100
SI30 hold time (from SCK30) ↑
tKSI1
400
SO30 output delay time (from SCK30) ↓
tKSO1
SCK30 cycle time
SCK30 high/low-level width
C = 100 pF Note
MAX.
Unit
ns
300
Note: C is the load capacitance of SO30, SCK30 output line
3-wire serial I/O mode (SCK30 External clock output)
Parameter
Symbol
Conditions
MIN.
tKCY1
800
tKH1, tKL1
400
SI30 setup time (to SCK30) ↑
tSIK1
100
SI30 hold time (from SCK30) ↑
tKSI1
400
SO30 output delay time (from SCK30) ↓
tKSO1
SCK30 cycle time
SCK30 high/low-level width
C = 100 pF Note
MAX.
Unit
ns
300
Note: C is the load capacitance of SO30, SCK30 output line
User’s Manual U16504EE1V1UD00
435
Chapter 25
Electrical Specifications
(b) Serial interface Channel CSI (SIO31)
3-wire serial I/O mode (SCK31 Internal clock output)
Parameter
Symbol
Conditions
MIN.
tKCY1
1000
tKH1, tKL1
tKCY1/2 - 50
SI31 setup time (to SCK31) ↑
tSIK1
100
SI31 hold time (from SCK31) ↑
tKSI1
400
SO31 output delay time (from SCK31) ↓
tKSO1
SCK31 cycle time
SCK31 high/low-level width
MAX.
Unit
ns
C = 100 pF Note
300
Note: C is the load capacitance of SO30, SCK31 output line
3-wire serial I/O mode (SCK31 External clock output)
Parameter
Symbol
Conditions
MIN.
tKCY1
800
tKH1, tKL1
400
SI31 setup time (to SCK31) ↑
tSIK1
100
SI31 hold time (from SCK31) ↑
tKSI1
400
SO31 output delay time (from SCK31) ↓
tKSO1
SCK31 cycle time
SCK31 high/low-level width
MAX.
Unit
ns
C = 100 pF Note
300
Note: C is the load capacitance of SO30, SCK31 output line
(c) Serial interface Channel UART
UART mode (Dedicated baud rate generator output)
Parameter
Symbol
Conditions
MIN.
Transfer rate
436
User’s Manual U16504EE1V1UD00
TYP.
MAX.
Unit
125
Kbps
Chapter 25
(2)
Electrical Specifications
µPD780824A(A1), µPD780826A(A1), µPD780828A(A1)
(TA = -40°C to +110°C, VDD = 4.0 to 5.5 V)
These specifications are only target values and may not be satisfied by mass-produced
products.
(a) Serial interface Channel CSI (SIO30)
3-wire serial I/O mode (SCK30 Internal clock output)
Parameter
Symbol
Conditions
MIN.
tKCY1
1000
tKH1, tKL1
tKCY1/2 - 50
SI30 setup time (to SCK30) ↑
tSIK1
100
SI30 hold time (from SCK30) ↑
tKSI1
400
SO30 output delay time (from SCK30) ↓
tKSO1
SCK30 cycle time
SCK30 high/low-level width
C = 100 pF Note
MAX.
Unit
ns
300
Note: C is the load capacitance of SO30, SCK30 output line
3-wire serial I/O mode (SCK30 External clock output)
Parameter
Symbol
Conditions
MIN.
tKCY1
800
tKH1, tKL1
400
SI30 setup time (to SCK30) ↑
tSIK1
100
SI30 hold time (from SCK30) ↑
tKSI1
400
SO30 output delay time (from SCK30) ↓
tKSO1
SCK30 cycle time
SCK30 high/low-level width
C = 100 pF Note
MAX.
Unit
ns
300
Note: C is the load capacitance of SO30, SCK30 output line
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Chapter 25
Electrical Specifications
(b) Serial interface Channel CSI (SIO31)
3-wire serial I/O mode (SCK31 Internal clock output)
Parameter
Symbol
Conditions
MIN.
tKCY1
1000
tKH1, tKL1
tKCY1/2 - 50
SI31 setup time (to SCK31) ↑
tSIK1
100
SI31 hold time (from SCK31) ↑
tKSI1
400
SO31 output delay time (from SCK31) ↓
tKSO1
SCK31 cycle time
SCK31 high/low-level width
MAX.
Unit
ns
C = 100 pF Note
300
Note: C is the load capacitance of SO30, SCK31 output line
3-wire serial I/O mode (SCK31 External clock output)
Parameter
Symbol
Conditions
MIN.
tKCY1
800
tKH1, tKL1
400
SI31 setup time (to SCK31) ↑
tSIK1
100
SI31 hold time (from SCK31) ↑
tKSI1
400
SO31 output delay time (from SCK31) ↓
tKSO1
SCK31 cycle time
SCK31 high/low-level width
MAX.
Unit
ns
C = 100 pF Note
300
Note: C is the load capacitance of SO30, SCK31 output line
(c) Serial interface Channel UART
UART mode (Dedicated baud rate generator output)
Parameter
Symbol
Conditions
MIN.
Transfer rate
438
User’s Manual U16504EE1V1UD00
TYP.
MAX.
Unit
125
Kbps
Chapter 25
(3)
Electrical Specifications
µPD780824A(A2), µPD780826A(A2), µPD780828A(A2)
(TA = -40°C to +125°C, VDD = 4.0 to 5.5 V)
These specifications are only target values and may not be satisfied by mass-produced
products.
(a) Serial interface Channel CSI (SIO30)
3-wire serial I/O mode (SCK30 Internal clock output)
Parameter
Symbol
Conditions
MIN.
tKCY1
1000
tKH1, tKL1
tKCY1/2 - 50
SI30 setup time (to SCK30) ↑
tSIK1
100
SI30 hold time (from SCK30) ↑
tKSI1
400
SO30 output delay time (from SCK30) ↓
tKSO1
SCK30 cycle time
SCK30 high/low-level width
C = 100 pF Note
MAX.
Unit
ns
300
Note: C is the load capacitance of SO30, SCK30 output line
3-wire serial I/O mode (SCK30 External clock output)
Parameter
Symbol
Conditions
MIN.
tKCY1
800
tKH1, tKL1
400
SI30 setup time (to SCK30) ↑
tSIK1
100
SI30 hold time (from SCK30) ↑
tKSI1
400
SO30 output delay time (from SCK30) ↓
tKSO1
SCK30 cycle time
SCK30 high/low-level width
C = 100 pF Note
MAX.
Unit
ns
300
Note: C is the load capacitance of SO30, SCK30 output line
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Chapter 25
Electrical Specifications
(b) Serial interface Channel CSI (SIO31)
3-wire serial I/O mode (SCK31 Internal clock output)
Parameter
Symbol
Conditions
MIN.
tKCY1
1000
tKH1, tKL1
tKCY1/2 - 50
SI31 setup time (to SCK31) ↑
tSIK1
100
SI31 hold time (from SCK31) ↑
tKSI1
400
SO31 output delay time (from SCK31) ↓
tKSO1
SCK31 cycle time
SCK31 high/low-level width
MAX.
Unit
ns
C = 100 pF Note
300
Note: C is the load capacitance of SO30, SCK31 output line
3-wire serial I/O mode (SCK31 External clock output)
Parameter
Symbol
Conditions
MIN.
tKCY1
800
tKH1, tKL1
400
SI31 setup time (to SCK31) ↑
tSIK1
100
SI31 hold time (from SCK31) ↑
tKSI1
400
SO31 output delay time (from SCK31) ↓
tKSO1
SCK31 cycle time
SCK31 high/low-level width
MAX.
Unit
ns
C = 100 pF Note
300
Note: C is the load capacitance of SO30, SCK31 output line
(c) Serial interface Channel UART
UART mode (Dedicated baud rate generator output)
Parameter
Symbol
Conditions
MIN.
Transfer rate
440
User’s Manual U16504EE1V1UD00
TYP.
MAX.
Unit
125
Kbps
Chapter 25
Electrical Specifications
AC Timing Test Points (excluding X1 Input)
0.8 VDD
0.2 VDD
0.8 VDD
0.2 VDD
Test points
Clock Timing
1/fX
tXL
tXH
VDD – 0.5 V
0.4 V
X1 Input
TI Timing
tTILn
tTIHn
TI20, TI21, TI22
TI50, TI51
Remark:
n = 2, 5
3-wire serial I/O mode / 2-wire serial I/O mode
tKCYm
tKLm
tKHm
SCK3n
tSIKm
SI3n
tKSIm
Input data
tKSO m
SO3n
Remark:
Output data
m = 0, 1
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Chapter 25
Electrical Specifications
25.5.3 Sound Generator Characteristics
(1)
µPD780824A(A), µPD780826A(A), µPD780828A(A), µPD78F0828A(A)
(TA = -40°C to +85°C, VDD = 4.0 to 5.5 V)
Parameter
Symbol
Conditions
MIN.
TYP.
fSG1
Sound generator input frequency
MAX.
Unit
8.38
MHz
SGO output rise time
fR
C=100 pFNote
80
200
ns
SGO output fall time
fF
C=100 pFNote
80
200
ns
(2)
µPD780824A(A1), µPD780826A(A1), µPD780828A(A1)
(TA = -40°C to +110°C, VDD = 4.0 to 5.5 V)
These specifications are only target values and may not be satisfied by mass-produced
products.
Parameter
Symbol
Conditions
TYP.
fSG1
Sound generator input frequency
MAX.
Unit
8.38
MHz
pFNote
80
200
ns
80
200
ns
SGO output rise time
fR
C=100
SGO output fall time
fF
C=100 pFNote
(3)
MIN.
µPD780824A(A2), µPD780826A(A2), µPD780828A(A2)
(TA = -40°C to +125°C, VDD = 4.0 to 5.5 V)
These specifications are only target values and may not be satisfied by mass-produced
products.
Parameter
Symbol
Conditions
MIN.
fSG1
Sound generator input frequency
TYP.
MAX.
Unit
8.38
MHz
SGO output rise time
fR
C=100 pFNote
80
200
ns
SGO output fall time
fF
C=100 pFNote
80
200
ns
Sound Generator Output Timing
tR
SGO
442
tF
0.9 VDD
0.1 VDD
User’s Manual U16504EE1V1UD00
Chapter 25
Electrical Specifications
25.5.4 Meter Controller / Driver Characteristics
(1)
µPD780824A(A), µPD780826A(A), µPD780828A(A), µPD78F0828A(A)
(TA = -40°C to +85°C, VDD = 4.0 to 5.5 V)
Parameter
Symbol
Conditions
MIN.
TYP. MAX.
Unit
8.38
MHz
Meter controller/driver
input frequency
fMCNote 1
PWM output rise time
fR
C=100 pFNote 2
80
200
ns
PWM output fall time
fF
C=100 pFNote 2
80
200
ns
∆HSPmn
IOH = -27 mA
∆HSPmn = I VOH [(SMmn)max - (SMmn)min]
50
mV
∆HSPmn
IOL = 27 mA
∆HSPmn = I VOL[(SMmn)max - (SMmn)min]
50
mV
Symmetry
performanceNote 3
Notes: 1. Source clock of the free-running counter.
2. C is the load capacitance of the PWM output line.
3. Indicates the dispersion of 16 PWM output voltages.
Remark:
(2)
m = 1 to 4
n = 1 to 4
µPD780824A(A1), µPD780826A(A1), µPD780828A(A1)
(TA = -40°C to +110°C, VDD = 4.0 to 5.5 V)
These specifications are only target values and may not be satisfied by mass-produced
products.
Parameter
Symbol
Conditions
MIN.
TYP. MAX.
Unit
8.38
MHz
Meter controller/driver
input frequency
fMCNote 1
PWM output rise time
fR
C=100 pFNote 2
80
200
ns
PWM output fall time
fF
C=100 pFNote 2
80
200
ns
∆HSPmn
IOH = -1 mA
∆HSPmn = I VOH [(SMmn)max - (SMmn)min]
50
mV
∆HSPmn
IOL = 1 mA
∆HSPmn = I VOL[(SMmn)max - (SMmn)min]
50
mV
Symmetry
performanceNote 3
Notes: 1. Source clock of the free-running counter.
2. C is the load capacitance of the PWM output line.
3. Indicates the dispersion of 16 PWM output voltages.
Remark:
m = 1 to 4, n = 1 to 4
The Meter C/D cannot be used at high temperature (TA = 110°C).
The maximum temperature is TA = 85°C.
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Chapter 25
(3)
Electrical Specifications
µPD780824A(A2), µPD780826A(A2), µPD780828A(A2)
(TA = -40°C to +125°C, VDD = 4.0 to 5.5 V)
These specifications are only target values and may not be satisfied by mass-produced
products.
Parameter
Symbol
Conditions
MIN.
TYP. MAX.
Unit
8.38
MHz
Meter controller/driver
input frequency
fMCNote 1
PWM output rise time
fR
C=100 pFNote 2
80
200
ns
PWM output fall time
fF
C=100 pFNote 2
80
200
ns
∆HSPmn
IOH = -1 mA
∆HSPmn = I VOH [(SMmn)max - (SMmn)min]
50
mV
∆HSPmn
IOL = 1 mA
∆HSPmn = I VOL[(SMmn)max - (SMmn)min]
50
mV
Symmetry
performanceNote 3
Notes: 1. Source clock of the free-running counter.
2. C is the load capacitance of the PWM output line.
3. Indicates the dispersion of 16 PWM output voltages.
Remark:
m = 1 to 4
n = 1 to 4
The Meter C/D cannot be used at high temperature (TA = 125°C).
The maximum temperature is TA = 85°C.
Meter Controller / Driver Output Timing
tR
SMmn
444
tF
0.9 VDD
0.1 VDD
User’s Manual U16504EE1V1UD00
Chapter 25
Electrical Specifications
25.5.5 A/D Converter Characteristics
(1)
µPD780824A(A), µPD780826A(A), µPD780828A(A), µPD78F0828A(A)
(TA = -40°C to +85°C, VDD = 4.0 to 5.5 V, AVSS = VSS = 0V, fX = 8 MHz)
Parameter
Symbol
Test Conditions
MIN.
TYP.
MAX.
Unit
8
8
8
bit
± 0.6
%
Resolution
Overall error Note
Conversion time
tCONV
14
Analog input voltage
VIAN
AVSS
Reference voltage
AVDD / AVREF current
AVDD / AVREF
IREF
AVDD = VDD
VDD
µs
AVDD
VDD
VDD
ADCS-bit = 1
750
1500
ADCS bit = 0
0
3
V
µA
Note: Overall error excluding quantization (± 1/2 LSB). It is indicated as a ratio to the full-scale value.
Remark:
(2)
fX: Main system clock oscillation frequency.
µPD780824A(A1), µPD780826A(A1), µPD780828A(A1)
(TA = -40°C to +110°C, VDD = 4.0 to 5.5 V, AVSS = VSS = 0V, fX = 8 MHz)
These specifications are only target values and may not be satisfied by mass-produced
products.
Parameter
Symbol
Test Conditions
MIN.
TYP.
MAX.
Unit
8
8
8
bit
± 1.3
%
Resolution
Overall error Note
Conversion time
tCONV
14
Analog input voltage
VIAN
AVSS
Reference voltage
AVDD / AVREF current
AVDD / AVREF
IREF
AVDD = VDD
VDD
µs
AVDD
VDD
VDD
ADCS-bit = 1
750
1500
ADCS bit = 0
0
3
V
µA
Note: Overall error excluding quantization (± 1/2 LSB). It is indicated as a ratio to the full-scale value.
Remark:
fX: Main system clock oscillation frequency.
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445
Chapter 25
(3)
Electrical Specifications
µPD780824A(A2), µPD780826A(A2), µPD780828A(A2)
(TA = -40°C to +125°C, VDD = 4.0 to 5.5 V, AVSS = VSS = 0V, fX = 8 MHz)
These specifications are only target values and may not be satisfied by mass-produced
products.
Parameter
Symbol
Test Conditions
Resolution
Overall error
MIN.
TYP.
MAX.
Unit
8
8
8
bit
± 1.3
%
Note
Conversion time
tCONV
14
Analog input voltage
VIAN
AVSS
Reference voltage
AVDD / AVREF current
AVDD / AVREF
IREF
AVDD = VDD
VDD
µs
AVDD
VDD
VDD
ADCS-bit = 1
750
1500
ADCS bit = 0
0
3
V
µA
Note: Overall error excluding quantization (± 1/2 LSB). It is indicated as a ratio to the full-scale value.
Remark:
446
fX: Main system clock oscillation frequency.
User’s Manual U16504EE1V1UD00
Chapter 25
Electrical Specifications
25.5.6 Data Memory Stop Mode Low Supply Voltage Data Retention Characteristics
(1)
µPD780824A(A), µPD780826A(A), µPD780828A(A), µPD78F0828A(A)
(TA = -40°C to +85°C)
Parameter
Symbol
Data retention power supply voltage
VDDDR
Data retention power supply current
IDDDR
Release signal set time
tSREL
Oscillation stabilization wait time
tWAIT
Test Conditions
MIN.
TYP.
2.5
VDDDR = 4.0 V
1
MAX.
Unit
5.5
V
30
µA
0
µs
Release by RESET
217/fX
Release by interrupt
Note
ms
Note: In combination with bits 0 to 2 (OSTS0 to OSTS2) of oscillation stabilization time select register,
selection of 212/fX and 214/fX to 217/fX is possible.
Remark:
(2)
fX: Main system clock oscillation frequency.
µPD780824A(A1), µPD780826A(A1), µPD780828A(A1)
(TA = -40°C to +110°C)
These specifications are only target values and may not be satisfied by mass-produced
products.
Parameter
Symbol
Data retention power supply voltage
VDDDR
Data retention power supply current
IDDDR
Release signal set time
tSREL
Oscillation stabilization wait time
tWAIT
Test Conditions
MIN.
TYP.
2.5
VDDDR = 4.0 V
1
0
MAX.
Unit
5.5
V
1000
µA
µs
Release by RESET
217/fX
Release by interrupt
Note
ms
Note: In combination with bits 0 to 2 (OSTS0 to OSTS2) of oscillation stabilization time select register,
selection of 212/fX and 214/fX to 217/fX is possible.
Remark:
fX: Main system clock oscillation frequency.
User’s Manual U16504EE1V1UD00
447
Chapter 25
(3)
Electrical Specifications
µPD780824A(A2), µPD780826A(A2), µPD780828A(A2)
(TA = -40°C to +125°C)
These specifications are only target values and may not be satisfied by mass-produced
products.
Parameter
Symbol
Data retention power supply voltage
VDDDR
Data retention power supply current
IDDDR
Release signal set time
tSREL
Oscillation stabilization wait time
tWAIT
Test Conditions
MIN.
TYP.
2.5
VDDDR = 4.0 V
1
0
MAX.
Unit
5.5
V
1000
µA
µs
Release by RESET
217/fX
Release by interrupt
Note
ms
Note: In combination with bits 0 to 2 (OSTS0 to OSTS2) of oscillation stabilization time select register,
selection of 212/fX and 214/fX to 217/fX is possible.
Remark:
448
fX: Main system clock oscillation frequency.
User’s Manual U16504EE1V1UD00
Chapter 25
Electrical Specifications
Data Retention Timing (STOP mode release by RESET)
Internal reset operation
HALT mode
STOP mode
Operating mode
Data retension mode
VDD
VDDDR
t SREL
STOP instruction execution
RESET
t WAIT
Data Retention Timing (Standby release signal: STOP mode release by Interrupt signal)
HALT mode
STOP mode
Operating mode
Data retension mode
VDD
VDDDR
t SREL
STOP instruction execution
Standby release signal
(interrupt request)
t WAIT
Interrupt Input Timing
t INTH
t INTL
INTP0 - INTP2
RESET Input Timing
t RSEL
RESET
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Chapter 25
Electrical Specifications
25.5.7 Flash Memory Programming Characteristics: µPD78F0828A(A)
(TA = 10°C to 40°C, VDD = AVDD = 4.5 to 5.5 V, VSS = AVSS = 0 V, VPP = 9.7 to 10.3 V)
(1)
Basic characteristics
Parameter
Symbol
MIN.
TYP.
MAX.
Unit
fX
4.0
8.38
MHz
VDD
4.0
5.5
V
0.2 VDD
V
Operating frequency
Supply voltage
Conditions
VPPL
When VPP low-level is detected
0
VPP
When VPP high-level is detected
0.8 VDD
VDD
1.2 VDD
V
VPPH
When VPP high-voltage is detected
and for programming
9.7
10.0
10.3
V
Number of rewrites
CWRT
20Note
Programming temperature
tPRG
10
Times
+40
°C
Note: Operation is not guaranteed for over 20 rewrites.
Remark:
(2)
After execution of the program command, execute the verify command and check that the
writing has been completed normally.
Serial write operation characteristics
Parameter
Symbol
Conditions
MIN.
Set time from VDD ↑ to VPP ↑
tDRPSR
VPP high voltage
10
Set time from VPP ↑ to RESET ↑
tPSRRF
VPP high voltage
1.0
VPP ↑ count start time from RESET ↑
tRFCF
VPP high voltage
1.0
Count execution time
tCOUNT
TYP.
MAX.
µs
2.0
VPP counter high-level width
tCH
8.0
Note
VPP counter low-level width
tCL
8.0
Note
VPP counter rise/fall time
tR, tF
1.0
Note: For maximum tCH / tCL, please make sure to finish the pulses within the time tCOUNT.
450
User’s Manual U16504EE1V1UD00
Unit
ms
µs
Chapter 25
Electrical Specifications
Flash Write Mode Setting Timing
V DD
V DD
0V
t DRPSR
t RFCF
t CH
tR
VPPH
VPP V DD
VPPL
RESET
(input)
t CL
t PSRRF
tF
t COUNT
V DD
0V
User’s Manual U16504EE1V1UD00
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Chapter 25
(3)
Electrical Specifications
Write erase characteristics
Parameter
Symbol
VPP supply voltage
VPP2
VDD supply current
IDD
VPP supply current
Step erase time
Conditions
MIN.
During flash memory programming
V
When VPP = 10 V, fX = 8.38 MHz
50
mA
IPP
When VPP = 10 V
100
mA
tER
Note 1
0.2
Note 2
tERA
When step erase time = 0.2 s
Write-back time
tWB
Note 3
Number of write-backs per
write-back command
cWB
When write-back time = 50 ms Note 4
Step write time
10.0
Unit
10.3
Overall erase time per area
Number of erase/ write-backs
9.7
TYP. MAX.
49.4
50
cERWB
tWR
Note 5
48
Overall write time per word
tWRW
When step write time = 50 µs
(1 word = 1 byte) Note 6
48
Number of rewrites per area
cERWR
1 erase + 1 write after erase =
= 1 rewrite Note 7
20
50
s
20
s/area
50.6
ms
60
Times/
write-back
command
16
Times
52
µs
520
µs/
word
Times/
area
Notes: 1. The recommended setting value for the step erase time is 0.2 s.
2. The prewrite time before erasure and the erase verify time (write-back time) is not included.
3. The recommended setting value for the write-back time is 50 ms.
4. Write-back is executed once by the issuance of the write-back command. Therefore, the
number of retries must be the maximum value minus the number of commands issued.
5. Recommended step write setting value is 50 µs.
6. The actual write time per word is 100 µs longer. The internal verify time during or after
a write is not included.
7. When a product is first written after shipment, "erase → write" and "write only" are both
taken as one rewrite.
Example: P: Write, E: Erase
Shipped product →
P → E → P → E → P : 3 rewrites
Shipped product → E → P → E → P → E → P : 3 rewrites
Remarks: 1. The range of the operating clock during flash memory programming is the same as the
range during normal operation.
2. When using the flashMASTER, the time parameters that need to be downloaded from
the parameter files for write/erase are automatically set. Unless otherwise directed, do
not change the set values.
452
User’s Manual U16504EE1V1UD00
Chapter 26 Package Drawing
80 PIN PLASTIC QFP (14 x14)
A
B
60
61
41
40
detail of lead end
C
S
D
R
Q
80
1
21
20
F
G
H
I
M
J
P
K
M
N
L
NOTE
Each lead centerline is located within 0.13 mm (0.005 inch) of
its true position (T.P.) at maximum material condition.
ITEM
MILLIMETERS
INCHES
A
17.20±0.20
0.677±0.008
B
14.00±0.20
0.551 +0.009
–0.008
C
14.00±0.20
0.551 +0.009
–0.008
D
17.20±0.20
0.677±0.008
F
0.825
0.032
G
0.825
0.032
H
0.32±0.06
0.013 +0.002
–0.003
I
0.13
0.005
J
0.65 (T.P.)
0.026 (T.P.)
K
1.60±0.20
0.063±0.008
L
0.80±0.20
0.031 +0.009
–0.008
M
0.17 +0.03
–0.07
0.007 +0.001
–0.003
N
0.10
0.004
P
1.40±0.10
0.055±0.004
Q
0.125±0.075
0.005±0.003
R
3° +7°
–3°
3° +7°
–3°
S
1.70 MAX.
0.067 MAX.
P80GC-65-8BT
Remark:
The shape and material of the ES product is the same as the mass produced product.
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[MEMO]
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User’s Manual U16504EE1V1UD00
Chapter 27
Recommended Soldering Conditions
The µPD780828A Subseries should be soldered and mounted under the conditions in the table below.
For detail of recommended soldering conditions, refer to the information document Semiconductor
Device Mounting Technology Manual (IEI-1207).
For soldering methods and conditions other than those recommended below, consult our sales
personnel.
• µPD780824AGC(A)-XXX-8BT
: 80-pin plastic QFP (14 × 14 mm)
• µPD780824AGC(A1)-XXX-8BT
: 80-pin plastic QFP (14 × 14 mm)
• µPD780824AGC(A2)-XXX-8BT
: 80-pin plastic QFP (14 × 14 mm)
• µPD780826AGC(A)-XXX-8BT
: 80-pin plastic QFP (14 × 14 mm)
• µPD780826AGC(A1)-XXX-8BT
: 80-pin plastic QFP (14 × 14 mm)
• µPD780826AGC(A2)-XXX-8BT
: 80-pin plastic QFP (14 × 14 mm)
• µPD780828AGC(A)-XXX-8BT
: 80-pin plastic QFP (14 × 14 mm)
• µPD780828AGC(A1)-XXX-8BT
: 80-pin plastic QFP (14 × 14 mm)
• µPD780828AGC(A2)-XXX-8BT
: 80-pin plastic QFP (14 × 14 mm)
• µPD78F0828AGC(A)-8BT
: 80-pin plastic QFP (14 × 14 mm)
Surface Mounting Type Soldering Conditions
Soldering conditions
Recommended
Condition Symbol
Infrared reflow
Package peak temperature: 235°C. Duration: 30 sec max. (at 210°C or
above). Number of times: twice max.
<Precautions>
(1) The second reflow should be started after the first reflow device temperature has returned to the ordinary state.
(2) Flux washing must not be performed by the use of water after the first
reflow.
IR35-00-2
VPS
Package peak temperature: 215°C. Duration: 40 sec max. (at 210°C or
above). Number of times: twice max.
<Precautions>
(1) The second reflow should be started after the first reflow device temperature has returned to the ordinary state.
(2) Flux washing must not be performed by the use of water after the first
reflow.
VR15-00-2
Wave soldering
Soldering bath temperature: 260°C max. Duration: 10 sec max. Number of
times: once. Preheating temperature: 120°C max. (package surface temperature)
WS60-00-1
Pin part heating
Pin temperature: 300°C max. Duration: 3 sec max. (per device side)
Soldering Method
Caution:
-
Use of more than one soldering method should be avoided (except in the case of pin
part heating).
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Appendix A
Development Tools
The following development tools are available for the development of systems that employ the
µPD780828A Subseries.
Figure A-1 shows the development tool configuration.
• Support for PC98-NX series
Unless otherwise specified, products compatible with IBM PC/ATTM computers are compatible
with PC98-NX series computers. When using PC98-NX series computers, refer to the explanation
for IBM PC/AT computers.
• Windows (Unless otherwise specified, “Windows” means the following OS).
• Windows 95/98
• Windows NT Version 4.0
• Windows 2000
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Appendix A
Figure A-1:
Development Tools
Development Tool Configuration
(a) When using the in-circuit emulator IE-78K0-NS-A
Language Processing Software
• Assembler package
• C compiler package
• C library source file
• Device file
Debugging Tool
• System simulator
• Integrated debugger
• Device file
Embedded Software
• Real-time OS
• OS
Host Machine (PC)
Interface adapter,
PC card interface, etc.
Flash Memory
Write Environment
In-circuit Emulator
Emulation board
Flash programmer
I/O board
Flash memory
write adapter
Power supply unit
Performance board
On-chip flash
memory version
Emulation probe
Conversion socket or
conversion adapter
Target system
Remark:
458
Items in broken line boxes differ according to the development environment. See A.3.1
Hardware.
User’s Manual U16504EE1V1UD00
Appendix A
Development Tools
A.1 Language Processing Software
NEC Software
RA78K/0
Assembler Package
This assembler converts programs written in mnemonics into an object codes executable with a microcontroller.
Further, this assembler is provided with functions capable of automatically creating
symbol tables and branch instruction optimization.
This assembler should be used in combination with an optional device file.
<Precaution when using RA78K/0 in PC environment>
This assembler package is a DOS-based application. It can also be used in Windows,
however, by using the Project Manager (included in assembler package) on Windows.
CC78K/0
C Compiler Package
This compiler converts programs written in C language into object codes executable
with a microcontroller.
This compiler should be used in combination with an optical assembler package and
device file.
<Precaution when using CC78K/0 in PC environment>
This C compiler package is a DOS-based application. It can also be used in Windows,
however, by using the Project Manager (included in assembler package) on Windows.
Device File
This file contains information peculiar to the device.
This device file should be used in combination with an optical tool (RA78K/0, CC78K/0,
SM78K0, ID78K0-NS, and ID78K0).
Corresponding OS and host machine differ depending on the tool to be used with.
CC78K/0-L
C Library Source File
This is a source file of functions configuring the object library included in the C compiler
package (CC78K/0).
This file is required to match the object library included in C compiler package to the
customer's specifications.
IAR Software
A78000
Assembler package used for the 78K0 series.
ICC78000
C compiler package used for the 78K0 series.
XLINK
Linker package used for the 78K0 series.
A.2 Flash Memory Writing Tools
FlashMASTER
Flashpro III
(part number: FL-PR3, PG-FP3)
Flash programmer dedicated to microcontrollers with on-chip flash memory.
Flashpro IV
(part number: PG-FP4)
Flash Programmer
FA-80GC-8BT
Flash Memory Writing Adapter
Flash memory writing adapter used connected to the Flashpro II and Flashpro
III.
• FA-80GC-8BT: 80-pin plastic QFP (GC-8BT type)
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Appendix A
Development Tools
A.3 Debugging Tools
A.3.1 Hardware
(1)
When using the In-Circuit Emulator IE-78K0-NS-A
IE-78K0-NS-A
In-circuit Emulator
The in-circuit emulator serves to debug hardware and software when developing
application systems using a 78K/0 Series product. It corresponds to integrated
debugger (ID78K0-NS). This emulator should be used in combination with power
supply unit, emulation probe, and interface adapter which is required to connect this
emulator to the host machine.
IE-70000-MC-PS-B
Power Supply Unit
This adapter is used for supplying power from a receptacle of 100-V to 240-V AC.
EB-Power FW 7301/05
Power Supply Unit
This adapter is used for supplying power from a receptable of 100 V to 240 V AC
IE-70000-98-IF-C
Interface Adapter
This adapter is required when using the PC-9800 series computer (except notebook type) as the IE-78K0-NS-A host machine (C bus compatible).
IE-70000-CD-IF-A
PC Card Interface
This is PC card and interface cable required when using notebook-type computer
as the IE-78K0-NS-A host machine (PCMCIA socket compatible).
IE-70000-PC-IF-C
Interface Adapter
This adapter is required when using the IBM PC compatible computers as the IE78K0-NS-A host machine (ISA bus compatible).
IE-70000-PCI-IF-A
Interface Adapter
This adapter is required when using a computer with PCI bus as the IE-78K0-NS
host machine.
IE-78K0-NS-P04
Emulation Board
This board emulates the operations of the peripheral hardware peculiar to a device.
It should be used in combination with an in-circuit emulator.
IE-780828-NS-EM4
Probe Board
This board provides the connection and buffers between the emulation board and
the connector of the emulation probe.
NP-80GC-TQ
Emulation Probe
This probe is used to connect the in-circuit emulator to a target system and is
designed for use with 80-pin plastic QFP (GC-8BT type).
NQPACK080SB
YQPACK080SB
This conversion adapter connects the NP-80GC-TQ to a target system board
YQSOCKET080SBF
designed for a 80-pin plastic QFP (GC-8BT type).
HQPACK080SB
Conversion Adapter
(2)
Socket Details
NQPACK080SB
Socket for soldering on the target.
YQPACK080SB
Adapter socket for connecting the probe to the NQPACK080SB
HQPACK080SB
Lid socket for connecting the device to the NQPACK080SB
YQSOCKET080SBF
High adapter between the device to the YQPACK080SB and the probe
460
User’s Manual U16504EE1V1UD00
Appendix A
Development Tools
A.3.2 Software
SM78K0
System Simulator
This system simulator is used to perform debugging at C source level or assembler level while simulating the operation of the target system on a host machine.
This simulator runs on Windows.
Use of the SM78K0 allows the execution of application logical testing and performance testing on an independent basis from hardware development without
having to use an in-circuit emulator, thereby providing higher development efficiency and software quality.
The SM78K0 should be used in combination with the optional device file.
This debugger is a control program to debug 78K/0 Series microcontrollers. It
adopts a graphical user interface, which is equivalent visually and operationally
to Windows or OSF/Motif™. It also has an enhanced debugging function for C
ID78K0-NS
language programs, and thus trace results can be displayed on screen in C-lanIntegrated Debugger
guage level by using the windows integration function which links a trace result
(supporting In-Circuit Emulator with its source program, disassembled display, and memory display. In addition,
IE-78K0-NS-A)
by incorporating function modules such as task debugger and system performance analyzer, the efficiency of debugging programs, which run on real-time
OSs can be improved. It should be used in combination with the optional device
file.
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Appendix B
Embedded Software
For efficient development and maintenance of the µPD780828A Subseries, the following embedded
software products are available.
B.1 Real-Time OS
RX78K/0
Real-time OS
RX78K/0 is a real-time OS conforming with the µITRON specifications. Tool (configurator) for generating nucleus of RX78K/0 and plural information tables is supplied. Used in
combination with an optional assembler package (RA78K/0) and device file
MX78K0
OS
µTRON specification subset OS. Nucleus of MX78K0 is supplied. This OS performs
task management, event management, and time management. It controls the task execution sequence for task management and selects the task to be executed next.
Caution:
When purchasing the RX78K/0, fill in the purchase application form in advance and
sign the User Agreement.
B.2 Fuzzy Inference Development Support System
FE9000/FE9200
Fuzzy knowledge data
creation tool
FT9080/FT9085
FI78K0
FD78K0
Fuzzy inference debugger
Program that supports input, edit, and evaluation (simulation) of fuzzy knowledge
data (fuzzy rule and membership function). FE9200 works on Windows.
Part number: µSxxxxFE9000 (PC-9800 Series)
µSxxxxFE9200 (IBM PC/AT and compatible machines)
Program that translates fuzzy knowledge data obtained by using fuzzy knowledge.
Translator data creation tool into assembler source program for RA78K0.
Part number: µSxxxxFT9080 (PC-9800 Series)
µSxxxxFT9085 (IBM PC/AT and compatible machines)
Program that executes fuzzy inference. Executes fuzzy inference when linked with
Fuzzy inference module, fuzzy knowledge data translated by translator.
Part number: µSxxxxFI78K0 (PC-9800 Series, IBM PC/AT and compatible
machines)
Support software for evaluation and adjustment of fuzzy knowledge data by using incircuit emulator and at hardware level.
Part number: µSxxxxFD78K0 (PC-9800 Series, PC/AT and compatible machines)
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Appendix C
Index
Numerics
16-bit timer mode control register (TMC2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116
16-bit timer register (TM2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114
8-bit timer mode control register 50 (TMC50) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134
8-bit timer mode control register 51 (TMC51) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135
8-bit timer registers 50 and 51 (TM50, TM51) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131
A
A/D conversion result register (ADCR1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 183, 194
A/D converter mode register (ADM1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 184
Analog input channel specification register (ADS1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 185
Asynchronous serial interface mode register (ASIM0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 220, 226
Asynchronous serial interface status register (ASIS0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 222, 228
Auxiliary carry flag (AC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
B
Baud rate generator control register (BRGC0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 223, 229
Bit Rate Prescaler Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 290
C
CAN control register (CANC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 280
CAN Receive Error Counter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 287
CAN Transmit Error Counter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 287
Capture pulse control register (CRC2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117
Capture register 20 (CR20) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114
Capture register 21 (CR21) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115
Capture register 22 (CR22) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115
Carry flag (CY) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Clock output selection register (CKS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 179
Compare control register (MCMPCn) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 342
Compare register 50 and 51 (CR50, 51) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131
Compare register n0 (MCMPn0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 339
Compare register n1 (MCMPn1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 339
D
D/A converter mode register (DAM0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 195
DCAN Error Status Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 284
E
External Interrupt Falling Edge Enable Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 359
External interrupt rising edge enable register (EGP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 359
F
Flash Self-Programming Mode Control Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 395
Free running up counter (SMCNT) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 339
G
General registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
I
IDREC0 to IDREC4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 274
IDTX0 to IDTX4 register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 267
In-service priority flag (ISP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Internal Expansion RAM Size Switching Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 389
Interrupt enable flag (IE) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Interrupt mask flag registers (MK0L, MK0H, MK1L) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 357
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Appendix C
Index
Interrupt request flag (ADIF) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 194
Interrupt request flag registers (IF0L, IF0H, IF1L) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 356
L
LCD display control register (LCDC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 318
LCD display mode register (LCDM) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 317
LCD timer control register (LCDTM) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 327
M
Mask control register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 299
Mask Identifier Control Register (MCON) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 278
Memory Size Switching Register (IMS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 388
Message Count Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 288
Meter controller/driver clock register (SMSWI) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 344
O
Oscillation Control Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 390
Oscillation Stabilization Time Select Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 374
P
Port 0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
Port 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
Port 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
Port 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
Port 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
Port 5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
Port 6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
Port 8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
Port 9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
Port function register (PF3, PF4, PF8 and PF9) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
Port mode control register (PMC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 343
port mode register (PM3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 201
port mode register (PM9) 211, . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 213
Port mode register 3 (PM3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136
Port mode register 6 (PM6) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 180
Port mode register 9 (PM9) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137
Port mode registers (PM0, PM2 to PM6, PM8, PM9) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
Power-fail compare mode register (PFM) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 186
Power-fail compare threshold value register (PFT) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 186
Prescaler mode register (PRM2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118
Priority specify flag registers (PR0L, PR0H, PR1L) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 358
Processor clock control register (PCC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104
Program counter (PC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Program status word (PSW) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62, 360
Pull-up resistor option register (PU0, PU3, PU4, PU6, PU8, PU9) . . . . . . . . . . . . . . . . . . . . . . . . . . . 98
Pulse width measurement with free-running counter and one capture register (TI20) . . . . . . . . . . . 119
R
Receive buffer register (RXB0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 218
Receive message register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 298
Receive shift register 1 (RXS0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 218
Redefinition control register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 302
Register bank select flags (RBS0 and RBS1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
S
Serial I/O shift register (SIO30) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 198
Serial I/O shift register (SIO31) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 207
Serial mode switch register (SIOSWI) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 209, 212, 214
Serial Operation Mode Register (CSIM30) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200, 201
466
User’s Manual U16504EE1V1UD00
Appendix C
Index
Serial operation mode register (CSIM30) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 199
Serial Operation Mode Register (CSIM31) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 210, 211, 213
Serial operation mode register (CSIM31) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 208
Sound generator amplitude register (SGAM) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 333
Sound generator buzzer control register (SGBR) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 333
Sound generator control register (SGCR) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 331
Special function register (SFR) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66, 78
Special Function Register List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Stack pointer (SP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Successive approximation register (SAR) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 182
Synchronization Control Registers 0 and 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 292
T
The serial I/O shift register (SIO31) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 215
Timer clock select register 50 (TCL50) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132
Timer clock select register 51 (TCL51) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133
Timer mode control register (MCNTC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 341
Transmit control register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 296
Transmit shift register 1 (TXS0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 218
W
Watch Timer Mode Register (WTM) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165
Watchdog timer clock select register (WDCS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172
Watchdog timer mode register (WDTM) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 173
Z
Zero flag (Z) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
User’s Manual U16504EE1V1UD00
467
468
User’s Manual U16504EE1V1UD00
Appendix D
Revision History
The following shows the revision history up to present. Application portions signifies the chapter of each
edition.
The Mark ∗ shows mayor revised points.
Table 1-0:
Edition No.
EE1V1
Major items revised
(1/2)
Revised Sections
Correction of reference times in figure 9-2 (page 165)
9.3
Caution (page 187)
12.4
Description for the IMS register (page 388)
23.1
Notes 1 (page 388)
Description to Table 23-2 (page 388)
Include Caution for IMS register (page 388)
Notes 2 (page 389)
23.2
Correction of Table 23-4 (page 389)
Change of Conditions for VIH1, VIH2, VIL1, VIL2 (pages 420, 424, 428)
User’s Manual U16504EE1V1UD00
25.4
469
Appendix D
Revision History
Table 1-0:
Edition No.
470
Major items revised
User’s Manual U16504EE1V1UD00
(2/2)
Revised Sections
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