EMC EM78P468NQ

EM78P468N
8-BIT
Microcontroller
Product
Specification
DOC. VERSION 1.2
ELAN MICROELECTRONICS CORP.
March 2005
Trademark Acknowledgments:
IBM is a registered trademark and PS/2 is a trademark of IBM.
Windows is a trademark of Microsoft Corporation.
ELAN and ELAN logo
are trademarks of ELAN Microelectronics Corporation.
Copyright © 2005 by ELAN Microelectronics Corporation
All Rights Reserved
Printed in Taiwan, ROC
The contents of in this specification are subject to change without notice. ELAN Microelectronics assumes no
responsibility concerning the accuracy, adequacy, or completeness of this specification. ELAN Microelectronics
makes no commitment to update, or to keep current the information and material contained in this specification.
Such information and material may change to conform to each confirmed order.
In no event shall ELAN Microelectronics be made responsible to any claims attributed to errors, omissions, or
other inaccuracies in the information or material contained in this specification. ELAN Microelectronics shall not
be liable for direct, indirect, special incidental, or consequential damages arising out of the use of such information
or material.
The software (if any) described in this specification is furnished under a license or nondisclosure agreement, and
may be used or copied only in accordance with the terms of such agreement.
ELAN Microelectronics products are not intended for use in life support appliances, devices, or systems. Use of
ELAN Microelectronics product in such applications is not supported and is prohibited.
NO PART OF THIS SPECIFICATION MAY BE REPRODUCED OR TRANSMITTED IN ANY FORM OR BY
ANY MEANS WITHOUT THE EXPRESS WRITTEN PERMISSION OF ELAN MICROELECTRONICS.
ELAN MICROELECTRONICS CORPORATION
Headquarters:
Hong Kong:
USA:
No. 12, Innovation Road 1
Science-based Industrial Park
Hsinchu, Taiwan, R.O.C. 30077
Tel: +886 3 563-9977
Fax: +886 3 563-9966
http://www.emc.com.tw
Elan (HK) Microelectronics
Corporation, Ltd.
Elan Information Technology
Group
Rm. 1005B, 10/F Empire Centre
68 Mody Road, Tsimshatsui
Kowloon , HONG KONG
Tel: +852 2723-3376
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elanhk@emc.com.hk
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USA
Tel: +1 408 366-8223
Fax: +1 408 366-8220
Europe:
Shenzhen:
Shanghai:
Elan Microelectronics Corp.
(Europe)
Elan Microelectronics
Shenzhen, Ltd.
Elan Microelectronics
Shanghai Corporation, Ltd.
Siewerdtstrasse 105
8050 Zurich, SWITZERLAND
Tel:+41 43 299-4060
Fax: +41 43 299-4079
http://www.elan-europe.com
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Shenzhen Hi-Tech Industrial Park
Shenzhen, Guandong, CHINA
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23/Bldg. #115 Lane 572, Bibo Road
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Tel: +86 021 5080-3866
Fax: +86 021 5080-4600
Contents
Contents
1 GENERAL DESCRIPTION··················································································· 1
2 FEATURES ·········································································································· 1
2.1
CPU ········································································································································1
2.2
LCD Circuit······························································································································2
2.3
Applications·····························································································································2
3 PIN ASSIGNMENTS····························································································· 3
4
3.1
QFP - 64 ·································································································································3
3.2
LQFP - 64 ·······························································································································4
3.3
LQFP - 44 ·······························································································································5
3.4
QFP - 44 ·································································································································6
FUNCTION DESCRIPTION················································································· 9
4.1
Operational Registers ···········································································································10
4.2
Special Purpose Registers····································································································19
4.3
TCC and WDT Pre-scaler ·····································································································26
4.4
I/O Ports································································································································29
4.5
RESET and Wake-up············································································································30
4.6
Oscillator ·······························································································································35
4.7
Power-on Considerations ·····································································································38
4.8
Interrupt·································································································································39
4.9
LCD Driver ····························································································································40
4.10
Infrared Remote Control Application / PWM Waveform Generate ······································46
4.11 Code Options ························································································································50
4.12
Instruction Set ······················································································································51
4.13
Timing Diagram····················································································································54
5 ABSOLUTE MAXIMUM RATINGS····································································· 55
6 ELECTRICAL CHARACTERISTIC ···································································· 56
6.1
DC Electrical Characteristics ································································································56
6.2
AC Electrical Characteristics ································································································58
6.3
Device Characteristic ············································································································59
7 APPLICATION CIRCUIT ···················································································· 71
APPENDIX A: ·································································································································72
APPENDIX B: ·································································································································75
APPENDIX C: ·································································································································76
Product Specification (V1.2) 03.15.2005
• iii
Contents
Specification Revision History
Version
1.0
1.1
1.2
iv •
Revision Description
Initial version
1. Add DC curve vs. Temperature.
2. Remove LVD function
1. Add LQFP Package
Date
2004/04/10
2004/12/09
2005/03/15
Product Specification (V1.2) 03.15.2005
EM78P468N
8-BIT Microcontroller
1
GENERAL DESCRIPTION
This LSI is an 8-bit RISC type microprocessor with high speed CMOS technology and
low power consumption. Integrated onto a single chip are on chip watchdog timer (WDT),
Data RAM, ROM, programmable real time clock counter, internal/external interrupt,
power down mode, LCD driver, infrared transmitter function, and tri-state I/O. The
EM78P468N provides multi-protection bits to protect against intrusion of user’s code in
the OTP memory and a seven option bits to accommodate user’s requirements. It also
provides an especial 13 bits customer ID option.
With its OTP-ROM feature, this LSI offers a convenient way of developing and verifying
user’s programs. Moreover, user developed code can be easily programmed with the
ELAN writer.
2
FEATURES
2.1 CPU
„
Operating voltage and temperature range:
z
Commercial: 2.2V ~ 5.5 V. (at 0℃~+70℃)
z
Industrial: 2.5V ~ 5.5 V. / (at -40℃~+85℃)
„
Operation speed: DC ~ 10MHz clock input.
„
Dual clock operation
„
z
High frequency oscillator can select among Crystal, RC, or PLL (phase lock
loop)
z
Low frequency oscillator can select between Crystal or RC mode
Totally 272 bytes SRAM
z
144 bytes general purpose register
z
128 bytes on chip data RAM
„
4K*13 bits OTP - ROM (One Time Programmable - Read Only Memory)
„
Up to 28 bi-directional tri-state I/O ports
z
Typically, 12 bi-directional tri-state I/O ports.
z
16 bi-directional tri-state I/O ports shared with LCD segment output pin.
„
8-level stack for subroutine nesting
„
8-bit real time clock/counter (TCC)
„
One infrared transmitter/PWM generator function
Product Specification (V1.2) 03.15.2005
(This specification is subject to change without further notice)
•1
EM78P468N
8-BIT Microcontroller
„
Four sets of 8 bits auto reload down-count timer can be used as interrupt sources
z
Counter 1: independent down-count timer
z
Counter 2, High Pulse Width Timer (HPWT), and Low Pulse Width Timer
(LPWT) shared with IR function.
„
Programmable free running on chip watchdog timer (WDT). This function can
operate on Normal, Green and Idle mode.
„
Operation modes:
z
Normal mode: The CPU operated on frequency of main oscillator (Fm)
z
Green mode: The CPU operated on frequency sub-oscillator (Fs) and main
oscillator (Fm) stop.
z
Idle mode: CPU idle, LCD display remains working
z
Sleep mode: whole chip stop working.
„
Input port wake up function (PORT6, PORT8). Working on Idle and leep mode.
„
Eight interrupt sources, three external and five internal.
„
z
Internal interrupt source : TCC; Counter 1,2; High/Low pulse width timer.
z
External interrupt source : INT0, INT1 and Pin change wake-up (Port 6 and
Port 8)
Packages:
z
Dice form : 59 pin
z
QFP-64 pin : EM78P468NQ (Body 14mm*20mm)
z
LQFP-64 pin : EM78P468NAQ (Body 7mm*7mm)
z
LQFP-44 pin : EM78P468NBQ (Body 10mm*10mm)
z
QFP-44 pin : EM78P468NCQ (Body 10mm*10mm)
2.2 LCD Circuit
„
Common driver pins: 4
„
Segment driver pins: 32
„
LCD Bias: 1/3, 1/2 bias
„
LCD Duty: 1/4, 1/3, 1/2 duty
2.3 Applications
2•
„
Remote control for air conditioner
„
Health care
„
Home appliances
Product Specification (V1.2) 03.15.2005
(This specification is subject to change without further notice)
EM78P468N
8-BIT Microcontroller
3
PIN ASSIGNMENTS
P6.5
P6.4
P6.3
P6.2
P6.1
P6.0
P5.7/IROUT
NC
NC
P5.6/TCC
P5.5/INT1
4
8
P6.6
NC
4
9
P6.7
NC
5
0
NC
SEG30/P8.6
5
1
SEG31/P8.7
SEG29/P8.5
3.1 QFP - 64
4
7
4
6
4
5
4
4
4
3
4
2
4
1
4
0
3
9
3
8
3
7
3
6
3
5
3
4
3
3
SEG28/P8.4
52
32
P5.4/INT0
SEG27/P8.3
53
31
XOUT
SEG26/P8.2
54
30
XIN
SEG25/P8.1
55
29
VDD
SEG24/P8.0
56
28
OSCO
SEG23/P7.7
57
27
R-OSCI
SEG22/P7.6
58
SEG21/P7.5
59
SEG20/P7.4
60
SEG19/P7.3
SEG18/P7.2
EM78P468NQ
26
GND
25
/RESET
24
VLCD3
61
23
VLCD2
62
22
VA
SEG17/P7.1
63
21
VB
SEG16/P7.0
64
20
COM0
2
3
4
5
6
7
8
9
1
0
1
1
1
2
1
3
1
4
1
5
1
6
1
7
1
8
1
9
SEG13
SEG12
SEG11
SEG10
SEG 9
SEG 8
SEG 7
SEG 6
SEG 5
SEG 4
SEG 3
SEG 2
SEG 1
SEG 0
COM3
COM2
COM1
SEG15
1
SEG14
QFP-64
Input Pin
Output Pin
Input/Output Pin
Digital I/O Pin/LCD Output Pin
LCD Output Pin
Fig. 1-(a) Pins Configuration for 64 Pin QFP Package
Product Specification (V1.2) 03.15.2005
(This specification is subject to change without further notice)
•3
EM78P468N
8-BIT Microcontroller
P6.5
P6.4
P6.3
P6.2
P6.1
P6.0
P5.7/IROUT
NC
4
5
4
4
4
3
4
2
4
1
4
0
3
9
3
8
3
7
3
6
P5.5/INT1
P6.6
4
6
NC
P6.7
4
7
P5.6/TCC
NC
4
8
SEG31/P8.7
NC
3.2 LQFP - 64
3
5
3
4
3
3
NC
49
32
P5.4/INT0
SEG28/P8.6
50
31
XOUT
SEG28/P8.5
51
30
XIN
SEG28/P8.4
52
29
VDD
SEG27/P8.3
53
28
OSCO
SEG26/P8.2
54
27
R-OSCI
SEG25/P8.1
55
26
GND
SEG24/P8.0
56
25
/RESET
SEG23/P7.7
57
24
VLCD3
SEG22/P7.6
58
23
VLCD2
SEG21/P7.5
59
22
VA
SEG20/P7.4
60
21
VB
SEG19/P7.3
61
20
COM0
SEG18/P7.2
62
19
COM1
SEG17/P7.1
63
18
COM2
SEG16/P7.0
64
17
COM3
EM78P468NAQ
SEG14
SEG13
SEG12
SEG11
SEG10
SEG 9
SEG 8
9
1
0
1
1
1
2
1
3
1
4
1
5
1
6
SEG 0
8
SEG 1
7
SEG 2
6
SEG 3
5
SEG 4
4
SEG 5
3
SEG 6
2
SEG 7
1
SEG15
LQFP-64
Input Pin
Output Pin
Input/Output Pin
Digital I/O Pin/LCD Output Pin
LCD Output Pin
Fig. 1-(b) Pins Configuration for 64 Pin LQFP Package
4•
Product Specification (V1.2) 03.15.2005
(This specification is subject to change without further notice)
EM78P468N
8-BIT Microcontroller
SEG28/P8.4
P6.7
P6.6
P6.5
P6.4
P6.3
P6.2
P6.1
P6.0
P5.7/IROUT
P5.6/TCC
3.3 LQFP - 44
3
3
3
2
3
1
3
0
2
9
2
8
2
7
2
6
2
5
2
4
2
3
SEG27/P8.3
34
22
P5.5/INT1
SEG26/P8.2
35
21
P5.4/INT0
SEG25/P8.1
36
20
XOUT
SEG24/P8.0
37
19
XIN
SEG23/P7.7
38
18
VDD
SEG22/P7.6
39
17
OSCO
SEG21/P7.5
40
16
R-OSCI
SEG20/P7.4
41
15
GND
SEG19/P7.3
42
14
/RESET
SEG18/P7.2
43
13
VLCD3
SEG17/P7.1
44
12
VLCD2
EM78P468NBQ
1
2
3
4
5
6
7
8
9
1
0
1
1
SEG16/P7.0
SEG14
SEG13
SEG12
SEG11
COM3
COM2
COM1
COM0
VB
VA
LQFP-44
Input Pin
Output Pin
Input/Output Pin
Digital I/O Pin/LCD Output Pin
LCD Output Pin
Fig. 1-(c) Pins Configuration for 44 Pin LQFP Package
Product Specification (V1.2) 03.15.2005
(This specification is subject to change without further notice)
•5
EM78P468N
8-BIT Microcontroller
SEG28/P8.4
P6.7
P6.6
P6.5
P6.4
P6.3
P6.2
P6.1
P6.0
P5.7/IROUT
P5.6/TCC
3.4 QFP - 44
3
3
3
2
3
1
3
0
2
9
2
8
2
7
2
6
2
5
2
4
2
3
SEG27/P8.3
34
22
P5.5/INT1
SEG26/P8.2
35
21
P5.4/INT0
SEG25/P8.1
36
20
XOUT
SEG24/P8.0
37
19
XIN
SEG23/P7.7
38
18
VDD
SEG22/P7.6
39
17
OSCO
SEG21/P7.5
40
16
R-OSCI
SEG20/P7.4
41
15
GND
SEG19/P7.3
42
14
/RESET
SEG18/P7.2
43
13
VLCD3
SEG17/P7.1
44
12
VLCD2
EM78P468NCQ
1
2
3
4
5
6
7
8
9
1
0
1
1
SEG16/P7.0
SEG14
SEG13
SEG12
SEG11
COM3
COM2
COM1
COM0
VB
VA
QFP-44
Input Pin
Output Pin
Input/Output Pin
Digital I/O Pin/LCD Output Pin
LCD Output Pin
Fig. 1-(d) Pins Configuration for 44 Pin QFP Package
6•
Product Specification (V1.2) 03.15.2005
(This specification is subject to change without further notice)
EM78P468N
8-BIT Microcontroller
Table 1 (a) Pin Description for Package of QFP64 and LQFP64
PIN number
I/O type
VDD
GND
29
26
I
I
R-OSCI
27
I
PIN
OSCO
28
O
Xin
30
I
Xout
31
O
/RESET
25
I
P5.4/INT0
32
I/O
P5.5/INT1
33
I/O
P5.6/TCC
34
I/O
P5.7/IROUT
37
I/O
P6.0
~
P6.7
38~45
I/O
COM3~0
SEG0~SEG15
SEG16/P7.0
~
SEG23/P7.7
17~20
16~1
64
~
57
O
O
SEG24/P8.0
~
SEG30/P8.6
SEG31/P8.7
56
~
50
46
VB
VA
VLCD2
VLCD3
21
22
23
24
35~36
47~49
NC
O/(I/O)
O/(I/O)
O
O
O
O
Description
* Power supply pin
* System ground pin
* In crystal mode: crystal input
* In RC mode: resistor pull high.
* In PLL mode: connect 0.01μF capacitance to GND
* Connect 0.01μF capacitor to GND and code option select
PLL mode when high oscillator is not use.
* In crystal mode: crystal output
* In RC mode: instruction clock output
* In crystal mode: Input pin for sub-oscillator. Connect to a
32.768KHz crystal
* RC mode: this pin is connected with a resistor to high
level.
* In crystal: Connect to a 32.768KHz crystal
* In RC mode: instruction clock output
* Low active. If set as /RESET and remains at logic low, the
devices will be reset
* General purpose I/O pin. /external interrupt.
* INT0 interruption source can be set to falling or rising
edge by IOC71 register bit 7 (INT_EDGE).
* Wake up from sleep mode and idle mode when the pin
status changes.
* General purpose I/O pin. /external interrupt.
* Interruption source is a falling edge signal.
* Wake up from sleep mode and idle mode when the pin
status changes.
* General purpose I/O/ external counter input
* This pin works in normal/green/idle mode.
* General purpose I/O pin or IR/PWM mode output pin,
* Capable of sinking 20mA/5V.
* General purpose I/O pin.
* Pull-high, pull-low and open drain function support.
* All pins can wake up from sleep and idle modes when the
pin status changes.
* LCD common output pin.
* LCD segment output pin.
* LCD segment output pin. Can be shared with general
purposes I/O pin
* LCD segment output pin. Can be shared with general I/O
pin
* For general purpose I/O use, can wake up from sleep
mode and idle mode when the pin status changes.
* For general purposes I/O use, supports pull-high
function.
* Connect capacitors for LCD bias voltage
* Connect capacitors for LCD bias voltage
* One of LCD bias voltage
* One of LCD bias voltage
Product Specification (V1.2) 03.15.2005
(This specification is subject to change without further notice)
•7
EM78P468N
8-BIT Microcontroller
Table 1 (b) Pin Description for Package of QFP44 and LQFP44
PIN
PIN number
I/O type
VDD
GND
18
15
I
I
R-OSCI
16
I
OSCO
17
O
Xin
19
I
Xout
20
O
/RESET
14
I
P5.4/INT0
21
I/O
P5.5/INT1
22
I/O
P5.6/TCC
23
I/O
P5.7/IROUT
24
I/O
P6.0
~
P6.7
25~32
I/O
COM3~0
SEG11~SEG14
SEG16/P7.0
SEG17/P7.1
~
SEG23/P7.7
6~9
5~2
1
44
~
38
O
O
8•
O/(I/O)
SEG24/P8.0
~
SEG31/P8.4
37
~
33
O/(I/O)
VB
VA
VLCD2
VLCD3
10
11
12
13
O
O
O
O
Description
* Power supply pin
* System ground pin
* In crystal mode: crystal input
* In RC mode: resistor pull high.
* In PLL mode: connect 0.01μF capacitance to GND
* Connect 0.01μF capacitor to GND and code option
select PLL mode when high oscillator is not use.
* In crystal mode: crystal output
* In RC mode: instruction clock output
* In crystal mode: Input pin for sub-oscillator. Connect to a
32.768KHz crystal
* RC mode: this pin is connected with a resistor to high
level.
* In crystal: Connect to a 32.768KHz crystal
* In RC mode: instruction clock output
* Low active. If set as /RESET and remains at logic low
* the devices will be reset
* General purpose I/O pin. /external interrupt.
* INT0 interruption source can be set to falling or rising
edge by IOC71 register bit 7 (INT_EDGE).
* Wake up from sleep mode and idle mode when the pin
status changes.
* General purpose I/O pin. /external interrupt.
* Interruption source is a falling edge signal.
* Wake up from sleep mode and idle mode when the pin
status changes.
* General purpose I/O/ external counter input
* This pin works in normal/green/idle mode.
* General purpose I/O pin or IR/PWM mode output pin,
* Capable of sinking 20mA/5V.
* General purpose I/O pin.
* Pull-high, pull-low and open drain function support.
* All pins can wake up from sleep and idle modes when
the pin status changes.
* LCD common output pin.
* LCD segment output pin.
* LCD segment output pin. Can be shared with general
purposes I/O pin
* LCD segment output pin. Can be shared with general
I/O pin
* For general purpose I/O use, can wake up from sleep
mode and idle mode when the pin status changes.
* For general purposes I/O use, supports pull-high
function.
* Connect capacitors for LCD bias voltage
* Connect capacitors for LCD bias voltage
* One of LCD bias voltage
* One of LCD bias voltage
Product Specification (V1.2) 03.15.2005
(This specification is subject to change without further notice)
EM78P468N
8-BIT Microcontroller
4
FUNCTION DESCRIPTION
CPU
Data RAM
Timing Control
LCD driver
LCD
ROM
IO PORT
I/O
Oscillator
PLL/Crystal/RC
IR/PWM
Xout
Xin
OSCO
R-OSCI
Timer/
Counter
Oscillator Timing
Control
ROM
WDT timer
STACK
Interruption
register
R1 (TCC)
Interruption
control
General RAM
Control w ake-up on I/
O port
R2
ALU
Instruction
decoder
R3
R4
ACC
Data & Control BUS
128 byte
Data RA M
LCD RAM
PORT5
IOC5
Common
driver
Segment
driver
PORT6
R
5
IOC6
PORT7
R
6
IOC9
PORT8
R
7
IOC9
R
8
Fig. 2 System Block Diagram
Product Specification (V1.2) 03.15.2005
(This specification is subject to change without further notice)
•9
EM78P468N
8-BIT Microcontroller
4.1 Operational Registers
4.1.1
R0/IAR (Indirect Addressing Register)
(Address: 00h)
R0 is not a physically implemented register. It is used as indirect addressing pointer. Any
instruction using R0 as register actually accesses the data pointed by the RAM Select
Register (R4).
4.1.2
R1/TCC (Time Clock Counter)
(Address: 01h)
Increases by an external signal edge applied to TCC, or by the instruction cycle clock.
Written and read by the program as any other register.
4.1.3
R2/PC (Program Counter)
(Address: 02h)
* The structure is depicted in Fig. 3
* Generates 4K × 13 on-chip ROM addresses to the relative programming instruction
codes.
* "JMP" instruction allows direct loading of the low 10 program counter bits.
* "CALL" instruction loads the low 10 bits of the PC and PC+1, then push it into the stack.
* "RET'' ("RETL k", "RETI") instruction loads the program counter with the contents at the
top of stack.
* "MOV R2, A" allows the loading of an address from the A register to the PC. The
contents of the ninth and tenth bits do not change.
* "ADD R2, A" allows a relative address be added to the current PC.
* The most significant bit (A10~A11) will be loaded with the content of bits PS0~PS1 in
the Status register (R3) upon execution of a "JMP'' or "CALL'' instruction.
10 •
Product Specification (V1.2) 03.15.2005
(This specification is subject to change without further notice)
EM78P468N
8-BIT Microcontroller
R3
PC
A11
A10
00 PAGE0 0000~03FF
01 PAGE1 0400~07FF
A9 A8
CALL
RET
RETL
RETI
10 PAGE2 0800~0BFF
A7
~
STACK LEVEL 1
STACK LEVEL 2
STACK LEVEL 4
STACK LEVEL 5
STACK LEVEL 6
Reset v ector
000H
TCC ov erf low int errupt v ector
003H
Exteral INT0 pin interrupt v ector
006H
Exteral INT1 pin interrupt v ector
009H
Counter 1 underf low interrupt v ector
00CH
Counter 2 underf low interrupt v ector
00FH
high pulse width timer underf low interrupt v ector
012H
low pulse width timer underf low interrupt v ector
015H
Port 6,Port8 pin change wake-up interrupt v ector
018H
STACK LEVEL 7
STACK LEVEL 8
On-Chip Programmemory
User Memory Space
STACK LEVEL 3
11 PAGE3 0C00~0FFF
A0
FFFH
Fig. 3 Program Counter Organization
ADDRESS
0 0 IAR (Indirect Addressing Register)
0 1 TCC (Time Clock Counter)
0 2 PC (Program Counter)
0 3 SR (Status Register)
0 4 RSR (RAM select register)
0 5 PORT5 (Port 5 & IOCPAGE Control)
0 6 PORT6 (Port6 I/O data register)
0 7 PORT7 (Port7 I/O data register)
0 8 PORT8 (Por t8 I/O data register)
0 9 LCDCR (LCD control register)
0 A LCD_ADDR (LCD address)
0 B LCD_DB (LCD data buffer)
0 C CNTER (Counter enable register )
0 D SBPCR (System, Booster , PLL control)
0 E IRCR (IR, Pin of IR;INT0/1;TCC control)
0 F ISR (interrupt status register)
R5 bit 0 -> 0
control register page 0
R5 bit 0 -> 1
control register page 1
P5CR (Port5 I/O & LCD segment control)
P6CR (Port6 I/O control register)
WUCR (Wake up & P5.7 si nk current)
P7CR (Port7 I/O contr ol register)
TCCCR (TCC & INT0 control register)
P8CR (Port8 I/O control register)
WDTCR (WDT control register)
RAM _ADDR (128 byte RAM address)
CNT12CR (Counter 1,2 control register)
RAM_DB (128 byte RAM data buffer)
H LPWTCR (high/low pulse width timer control)
CNT1PR (Counter 1 pr eset register)
P6PH (Port 6 pull-high control register)
CNT2PR (Counter 2 pr eset register)
P6OD (Port 6 open drain control register)
HPWTPR (High-pulse width timer preset)
P8PH (Port 8 pull-high control register)
LPWTPR (Low-pulse width timer preset)
P6PL (Port 6 pull-low control register)
IMR (interrupt mask register)
10
|
1F
16 byte common register
LCD RAM 4*32 bits
20
|
3F
bank 0 ~ bank 3
32 byte common register
128 byte data RAM
Fig. 4 Data Memory Configuration
Product Specification (V1.2) 03.15.2005
(This specification is subject to change without further notice)
• 11
EM78P468N
8-BIT Microcontroller
4.1.4
R3/SR (Status Register)
(Address: 03h)
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
--
PS1
PS0
T
P
Z
DC
C
Bit 7 : Not used
Bit 6 ~ 5 (PS1 ~ 0) : Page select bits
PS1
PS0
ROM page (Address)
0
0
Page 0 (000H ~ 3FFH)
0
1
Page 1 (400H ~ 7FFH)
1
0
Page 2 (800H ~ BFFH)
1
1
Page 3 (C00H ~ FFFH)
PS0~PS1 are used to select a ROM page. User can use PAGE instruction (e.g. PAGE 1)
or set PS1~PS0 bits to change ROM page. When executing a "JMP", "CALL", or other
instructions which causes the program counter to be changed (e.g. MOV R2, A),
PS0~PS1 are loaded into the 11th and 12th bits of the program counter where it selects
one of the available program memory pages. Note that RET (RETL, RETI) instruction
does not change the PS0~PS1 bits. That is, the return will always be to the page from
where the subroutine was called, regardless of the current setting of PS0~PS1 bits.
Bit 4 (T) : Time-out bit. Set to 1 by the "SLEP" and "WDTC" commands or during power
up and reset to 0 by WDT timeout.
EVENT
T
P
REMARK
WDT wake up from sleep mode
0
0
WDT time out (not sleep mode)
0
1
/RESET wake up from sleep
1
0
Power up
1
1
Low pulse on /RESET
1
1
X: don't care
Bit 3 (P) : Power down bit. Set to 1 during power on or by a "WDTC" command and reset
to 0 by a "SLEP" command.
Bit 2 (Z) : Zero flag
Bit 1 (DC) : Auxiliary carry flag.
Bit 0 (C) : Carry flag
4.1.5
R4/RSR (RAM Select Register)
(Address: 04h)
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
RBS1
RBS0
RSR5
RSR4
RSR3
RSR2
RSR1
RSR0
Bits 7 ~ 6 (RBS1 ~ RBS0) : determine which bank is activated among the 4 banks. See
the configuration of the data memory in Fig.4. Use BANK instruction (e.g. BABK 1) to
change bank.
12 •
Product Specification (V1.2) 03.15.2005
(This specification is subject to change without further notice)
EM78P468N
8-BIT Microcontroller
Bits 5 ~ 0 (RSR5 ~ RSR0) : are used to select up to 64 registers (address: 00~3F) in the
indirect addressing mode. If no indirect addressing is used, the RSR can be used as an
8-bit general purposes read/writer register.
4.1.6
R5/PORT5 (PORT 5 I/O Data and Page of Register Select)
(Address: 05h)
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
R57
R56
R55
R54
--
--
--
IOCPAGE
Bit 7~4 : 4-bits I/O registers of PORT5
User can use IOC50 register to define input or output each bit.
Bit 3~1 : Not used
Bit 0 (IOCPAGE) : change IOC5 ~ IOCF to another page
IOCPAGE = “0” : Page 0 (select register of IOC 50 to IOC F0)
IOCPAGE = “1” : Page 1 (select register of IOC 61 to IOC E1)
4.1.7
R6/PORT6 (PORT 6 I/O Data Register)
(Address: 06h)
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
R67
R66
R65
R64
R63
R62
R61
R60
Bit 7~0 : 8-bit I/O registers of PORT 6
User can use IOC60 register to define input or output each bit.
4.1.8
R7/PORT7 (PORT 7 I/O Data Register)
(Address: 07h)
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
R77
R76
R75
R74
R73
R72
R71
R70
Bit 7~0 : 8-bit I/O registers of PORT 7
User can use IOC70 register to define input or output each bit.
4.1.9
R8/PORT8 (PORT 8 I/O Data Register)
(Address: 08h)
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
R87
R86
R85
R84
R83
R82
R81
R80
Bit 7~0 : 8-bit I/O registers of PORT 8
User can use IOC80 register to define input or output each bit.
Product Specification (V1.2) 03.15.2005
(This specification is subject to change without further notice)
• 13
EM78P468N
8-BIT Microcontroller
4.1.10
R9/LCDCR (LCD Control Register)
(Address: 09h)
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
BS
DS1
DS0
LCDEN
--
Bit 2
Bit 1
Bit 0
LCDTYPE LCDF1
LCDF0
Bit 7 (BS): LCD bias select bit,
BS = “0”: 1/2 bias
BS = “1”: 1/3 bias
Bit 6 ~ 5 (DS1 ~ DS0): LCD duty select
DS1
DS0
LCD duty
0
0
1/2 duty
0
1
1/3 duty
1
X
1/4 duty
Bit 4 (LCDEN) : LCD enable bit
LCDEN = “0” : LCD circuit disable. all common/segment outputs are set to ground
(GND) level
LCDEN = “1” : LCD circuit enable.
Bit 3: Not used
Bit 2 (LCDTYPE) : LCD drive waveform type select bit
LCDTYPE = “0” : A type waveform
LCDTYPE = “1” : B type waveform
Bit 1 ~ 0(LCDF1 ~ LCDF0): LCD frame frequency control bits
LCDF1
LCDF0
0
LCD frame frequency (e.g. Fs=32.768KHz)
1/2 duty
1/3 duty
1/4 duty
0
Fs/(256*2)=64.0
Fs/(172*3)=63.5
Fs/(128*4) =64.0
0
1
Fs/(280*2)=58.5
Fs/(188*3)=58.0
Fs/(140*4) =58.5
1
0
Fs/(304*2)=53.9
Fs/(204*3)=53.5
Fs/(152*4) =53.9
1
1
Fs/(232*2)=70.6
Fs/(156*3)=70.0
Fs/(116*4) =70.6
Fs: sub-oscillator frequency
4.1.11
RA/LCD_ADDR (LCD Address)
(Address: 0Ah)
Bit 7
Bit 6
Bit 5
0
0
0
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
LCD_A4 LCD_A3 LCD_A2 LCD_A1 LCD_A0
Bit 7 ~ 5: Not used, fixed to “0”
14 •
Product Specification (V1.2) 03.15.2005
(This specification is subject to change without further notice)
EM78P468N
8-BIT Microcontroller
Bit 4~0 (LCDA4 ~ LCDA0): LCD RAM address
RA
(LCD address) Bit 7 ~4
RB (LCD data buffer)
Bit 3
Bit 2
Bit 1
Bit 0
(LCD_D3) (LCD_D2) (LCD_D1) (LCD_D0)
Segment
00H
--
SEG0
01H
--
SEG1
02H
--
SEG2
|
|
|
1DH
--
SEG29
1EH
--
SEG30
1FH
--
SEG31
Common
X
4.1.12
COM3
COM2
COM1
COM0
RB/LCD_DB (LCD Data Buffer)
(Address: 0Bh)
Bit 7
Bit 6
Bit 5
Bit 4
--
--
--
--
Bit 3
Bit 2
Bit 1
Bit 0
LCD_D3 LCD_D2 LCD_D1 LCD_D0
Bit 7 ~ 4 : Not used
Bit 3~0 (LCD_D3 ~ LCD_D0) : LCD RAM data transfer register
4.1.13
RC/CNTER (Counter Enable Register)
(Address: 0Ch)
Bit 7
Bit 6
Bit 5
Bit 4
--
--
--
--
Bit 3
Bit 2
Bit 1
Bit 0
LPWTEN HPWTEN CNT2EN CNT1EN
Bit 7,5 : Not used, must fixed to “0”
Bit 6,4 : Not used
Bit 3(LPWTEN): low pulse width timer enable bit,
LPWTEN = “0” : Disable LPWT. Count operation stop.
LPWTEN = “1” : Enable LPWT. Count operation start.
Bit 2(HPWTEN) : high pulse width timer enable bit
HPWTEN = “0” : Disable HPWT. Count operation stop.
HPWTEN = “1” : Enable HPWT. Count operation start.
Bit 1(CNT2EN) : counter 2 enable bit
CNT2EN = “0” : Disable Counter 2. Count operation stop.
CNT2EN = “1” : Enable Counter 2. Count operation start.
Bit 0(CNT1EN) : counter 1 enable bit
CNT1EN = “0” : Disable Counter 1. Count operation stop.
Product Specification (V1.2) 03.15.2005
(This specification is subject to change without further notice)
• 15
EM78P468N
8-BIT Microcontroller
CNT1EN = “1” : Enable Counter 1. Count operation start.
4.1.14
RD/SBPCR (System, Booster and PLL Control Register)
(Address: 0Dh)
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
--
CLK2
CLK1
CLK0
IDLE
BF1
BF0
CPUS
Bit 7: Not used
Bit 6 ~ 4 (CLK2 ~ CLK0): main clock selection bits for PLL mode (code option select)
CLK2
CLK1
CLK0
Main clock
Example Fs=32.768K
0
0
0
Fs*130
4.26 MHz
0
0
1
Fs*65
2.13 MHz
0
1
0
Fs*65/2
1.065 MHz
0
1
1
Fs*65/4
532 KHz
1
X
X
Fs*244
8 MHz
Bit 3 (IDLE) : idle mode enable bit. This bit will decide the intended mode of the SLEP
instruction.
IDLE=”0”+SLEP instruction => sleep mode
IDLE=”1”+SLEP instruction => idle mode
* NOP instruction must be added after SLEP instruction.
Example : IDLE mode : IDLE bit = “1” +SLEP instruction + NOP instruction
SLEEP mode : IDLE bit = “0” +SLEP instruction + NOP instruction
Bit 2,1 (BF1, 0): LCD booster frequency select bit to adjust VLCD 2,3 driving.
BF1
BF0
Booster frequency
0
0
Fs
0
1
Fs/4
1
0
Fs/8
1
1
Fs/16
Bit 0 (CPUS): CPU oscillator source select, When CPUS=0, the CPU oscillator select
sub-oscillator and the main oscillator is stopped.
CPUS = “0”: sub-oscillator (Fs)
CPUS = “1”: main oscillator (Fm)
16 •
Product Specification (V1.2) 03.15.2005
(This specification is subject to change without further notice)
EM78P468N
8-BIT Microcontroller
CPU Operation Mode
Code option
HLFS=1
Normal Mode
Code option
HLFS=0
fm:oscillation
fs:oscillation
it must delay a little times for the main
oscillation stable w hile your system timing
control is conscientious
RESET
CPU: using fosc
CPUS="0"
CPUS="1"
IDLE="0"
SLEP
SLEEP Mode
IDLE="1"
SLEP
Green Mode
fm:stop
fs:oscillation
Fm:stop
Fs: stop
Wake up
CPU: stop
IDLE Mode
fm:stop
fs:oscillation
w ake up
CPU: using fs
CPU: stop
The w ake up time from idle to green
mode is 16*1/fs
The w ake up time from sleep to green mode is
approximately sub-oscillator setup time +18ms+16*1/fs
Fig. 5 CPU Operation Mode
4.1.15
RE/IRCR (IR and PORT 5 Setting Control Register)
(Address: 0Eh)
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
IRE
HF
LGP
--
IROUTE
TCCE
EINT1
EINT0
Bit 7 (IRE): Infrared Remote Enable bit
IRE = “0” : Disable IR/PWM function. The state of P5.7/IROUT pin is determined
by bit 7 of IOC 50 if it’s for IROUT.
IRE = “1” : Enable IR or PWM function.
Bit 6 (HF) : High carry frequency.
HF = “0” : For PWM application, disable H/W modulator function. IROUT
waveform is created according to high-pulse and low-pulse time as determined by
the high pulse and low pulse width timers respectively. The counter 2 is an
independent auto reload timer.
HF = “1” : For IR application mode, enable H/W modulator function, the low time
sections of the generated pulse is modulated with the frequency Fcarrier. The
frequency of Fcarrier provide by counter 2.
Bit 5 (LGP) : IROUT for long time of low pulse.
LGP = “0” : The high-pulse width timer register and low-pulse width timer is valid.
LGP = “1” : The high-pulse width timer register is ignored. So the IROUT
waveform is dependent on low-pulse width timer register only.
Product Specification (V1.2) 03.15.2005
(This specification is subject to change without further notice)
• 17
EM78P468N
8-BIT Microcontroller
Bit 4 : Not used
Bit 3 (IROUTE) : Define the function of P5.7/IROUT pin.
IROUTE = “0” : for bi-directional general I/O pin.
IROUTE = “1” : for IR or PWM output pin, the control bit of P5.7 (bit 7 of IOC50)
must be set to “0”
Bit 2 (TCCE) : Define the function of P5.6/TCC pin.
TCCE = “0” : for bi-directional general I/O pin.
TCCE = “1” : for external input pin of TCC, the control bit of P5.6 (bit 6 of IOC50)
must be set to “1”
Bit 1 (EINT1): Define the function of P5.5/INT1 pin.
EINT1 = “0” : for bi-directional general I/O pin.
EINT1 = “1” : for external interrupt pin of INT1, the control bit of P5.5 (bit 5 of
IOC50) must be set to “1”
Bit 0 (EINT0) : Define the function of P5.4/INT0 pin.
EINT0 = “0” : for bi-directional general I/O pin.
EINT0 = “1” : for external interrupt pin of INT0, the control bit of P5.4 (bit 4 of
IOC50) must be set to “1”
4.1.16
RF/ISR (Interrupt Status Register)
(Address: 0Fh)
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
ICIF
LPWTF
HPWTF
CNT2F
CNT1F
INT1F
INT0F
TCIF
These bits are set to “1” when interrupt occurs respectively.
Bit 7 (ICIF) : PORT 6, PORT 8, input status changed interrupt flag. Set when PORT6,
PORT8 input changes.
Bit 6 (LPWTF) : interrupt flag of internal low-pulse width timer underflow.
Bit 5 (HPWTF) : interrupt flag of internal high-pulse width timer underflow.
Bit 4 (CNT2F) : interrupt flag of internal counter 2 under-flow.
Bit 3 (CNT1F) : interrupt flag of internal counter 1 underflow.
Bit 2 (INT1F ): external INT1 pin interrupt flag.
Bit 1 (INT0F) : external INT0 pin interrupt flag.
Bit 0 (TCIF) : TCC timer overflow interrupt flag. Set when TCC timer overflows.
4.1.17
Address: 10h~3Fh;R10~R3F (General Purpose Register)
R10~R31F and R20~R3F (Banks 0~3) are general purposes register.
18 •
Product Specification (V1.2) 03.15.2005
(This specification is subject to change without further notice)
EM78P468N
8-BIT Microcontroller
4.2 Special Purpose Registers
4.2.1
A (Accumulator)
„
Internal data transfer, or instruction operand holding
„
This is not an addressable register.
Registers of IOC Page 0 (IOC50 ~ IOCF0, Bit 0 of R5 = “0”)
4.2.2
IOC50/P5CR (PORT 5 I/O and PORT 7, 8 for LCD Segment
Control Register)
(Address: 05h, Bit 0 of R5 = “0”)
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
IOC57
IOC56
IOC55
IOC54
P8HS
P8LS
P7HS
P7LS
Bit 7~4(IOC57~54): PORT 5 I/O direction control register
IOC5x = “0”: set the relative P5.x I/O pins as output
IOC5x = “1”: set the relative P5.x I/O pin into high impedance (input pin)
Bit 3(P8HS): Switch to high nibble I/O of PORT 8 or to LCD segment output as share
pins SEGxx/P8.x pins
P8HS = “0”: select high nibble of PORT 8 as normal P8.4~P8.7
P8HS = “1”: select LCD SEGMENT output as SEG 28~SEG 31 output
Bit 2(P8LS): Switch to low nibble I/O of PORT 8 or to LCD segment output as share pins
SEGxx/P8.x pins
P8LS = ”0”: select low nibble of PORT 8 as normal P8.0~P8.3
P8LS = ”1”: select LCD SEGMENT output as SEG 24~SEG 27 output
Bit 1(P7HS): Switch to high nibble I/O of PORT 7 or to LCD segment output as share
pins SEGxx/P7.x pins
P7HS = “0”: select high nibble of PORT 7 as normal P7.4~P7.7
P7HS = “1”: select LCD SEGMENT output as SEG 20~SEG 23 output
Bit 0(P7LS): Switch to low nibble I/O of PORT 7 or to LCD segment output as share pins
SEGxx/P7.x pins
P7LS = ”0”: select low nibble of PORT 7 as normal P7.0~P7.3
P7LS = “1”: select LCD SEGMENT output as SEG 16~SEG 19 output
4.2.3
IOC60/P6CR (PORT 6 I/O Control Register)
(Address: 06h, Bit 0 of R5 = “0”)
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
IOC67
IOC66
IOC65
IOC64
IOC63
IOC62
IOC61
IOC60
Product Specification (V1.2) 03.15.2005
(This specification is subject to change without further notice)
• 19
EM78P468N
8-BIT Microcontroller
Bit 7 (IOC67)~Bit 0(IOC60): PORT 6 I/O direction control register
IOC6x =”0”: set the relative PORT6.x I/O pins as output
IOC6x =”1”: set the relative PORT6.x I/O pin into high impedance (input pin)
4.2.4
IOC70/P7CR (PORT 7 I/O Control Register)
(Address: 07h, Bit 0 of R5 = “0”)
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
IOC77
IOC76
IOC75
IOC74
IOC73
IOC72
IOC71
IOC70
Bit 7 (IOC77)~Bit 0(IOC70): PORT 7 I/O direction control register
IOC7x = “0”: set the relative PORT7.x I/O pins as output
IOC7x = “1”: set the relative PORT7.x I/O pin into high impedance (input pin)
4.2.5
IOC80/P8CR (PORT 8 I/O Control Register)
(Address: 08h, Bit 0 of R5 = “0”)
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
IOC87
IOC86
IOC85
IOC84
IOC83
IOC82
IOC81
IOC80
Bit 7 (IOC 87)~Bit 0(IOC 80): PORT 8 I/O direction control register
IOC8x = “0”: set the relative PORT8.x I/O pins as output
IOC8x = “1”: set the relative PORT8.x I/O pin into high impedance (input pin)
4.2.6
IOC90/RAM_ADDR (128 Bytes RAM Address)
(Address: 09h, Bit 0 of R5 = “0”)
Bit 7
0
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
RAM_A6 RAM_A5 RAM_A4 RAM_A3 RAM_A2 RAM_A1 RAM_A0
Bit 7: Not used, fixed at “0”
Bit 6~0: 128 bytes RAM address
4.2.7
IOCA0/RAM_DB (128 Bytes RAM Data Buffer)
(Address: 0Ah, Bit 0 of R5 = “0”)
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
RAM_D7 RAM_D6 RAM_D5 RAM_D4 RAM_D3 RAM_D2 RAM_D1 RAM_D0
Bit 7~0: 128 bytes RAM data transfer register
4.2.8
IOCB0/CNT1PR (Counter 1 Preset Register)
(Address: 0Bh, Bit 0 of R5 = “0”)
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Bit 7 ~ Bit 0: All are Counter 1 buffer that user can read and write. The Counter 1 is an
8-bit down-count timer with 8-bit pre-scaler that is used as this register to preset the
20 •
Product Specification (V1.2) 03.15.2005
(This specification is subject to change without further notice)
EM78P468N
8-BIT Microcontroller
counter and read preset value. The pre-scaler is set by IOC91 register. After an
interruption, it will auto reload the preset value.
4.2.9
IOCC0/CNT2PR (Counter 2 Preset Register)
(Address: 0Ch, Bit 0 of R5 = “0”)
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Bit 7 ~ Bit 0: All are Counter 2 buffer that user can read and write. The Counter 2 is an
8-bit down-count timer with 8-bit pre-scaler that is used as this register to preset the
counter and read preset value. The pre-scaler is set by IOC91 register. After an
interruption, it will reload the preset value.
When IR output is enabled, this control register can obtain carrier frequency output.
If the Counter 2 clock source is equal to FT –
Carrier frequency (Fcarrier) =
FT
2 * (preset _ value + 1) * prescaler
4.2.10 IOCD0/HPWTPR (High-Pulse Width Timer Preset Register)
(Address: 0Dh, Bit 0 of R5 = “0”)
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Bit 7 ~ Bit 0: All are high-pulse width timer buffer that user can read and write.
High-pulse width timer preset register is an eight-bit down-counter with 8-bit pre-scaler
that is used as IOCD0 to preset the counter and read preset value. The pre-scaler is set
by IOCA1 register. After an interruption, it will reload the preset value.
For PWM or IR application, this control register is set as high pulse width.
If the high-pulse width timer source clock is FT –
prescaler * (preset _ value + 1)
High pulse time =
FT
4.2.11 IOCE0/LPWTPR (Low-Pulse Width Timer Preset Register)
(Address: 0Eh, Bit 0 of R5 = “0”)
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Bit 7 ~ Bit 0: All are low-pulse width timer buffer that user can read and write. Low-pulse
width timer preset is an eight-bit down-counter with 8-bit pre-scaler that is used as IOCE0
to preset the counter and read preset value. The pre-scaler is set by IOCA1 register.
After an interruption, it will reload the preset value.
For PWM or IR application, this control register is set as low pulse width.
If the low-pulse width timer source clock is FT –
Product Specification (V1.2) 03.15.2005
(This specification is subject to change without further notice)
• 21
EM78P468N
8-BIT Microcontroller
Low pulse time =
prescaler * (preset _ value + 1)
FT
4.2.12 IOCF0/IMR (Interrupt Mask Register)
(Address: 0Fh, Bit 0 of R5 = “0”)
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
ICIE
LPWTE
HPWTE
CNT2E
CNT1E
INT1E
INT0E
TCIE
Bit 7~Bit 0: interrupt enable bit. Enable interrupt source respectively.
0: disable interrupt
1: enable interrupt
IOCF0 register is readable and writable.
Registers of IOC Page 1 (IOC61 ~ IOCE1, Bit 0 of R5 = “1”)
4.2.13 IOC61/WUCR (Wake Up and sink current of P5.7/IROUT Control
Register)
(Address: 06h, Bit 0 of R5 = “1”)
Bit 7
Bit 6
Bit 5
Bit 4
IROCS
--
--
--
Bit 3
Bit 2
Bit 1
Bit 0
/WUE8H /WUE8L /WUE6H /WUE6L
Bit 7: IROCS: IROUT/PORT5.7 output sink current set
P5.7/IROUT Sink current
IROCS
VDD=5V
VDD=3V
0
10 mA
6 mA
1
20 mA
12 mA
Bit 6,5,4: Not used
Bit 3 (/WUE8H): 0/1=> enable/disable P8.4~P8.7 pin change wake up function
Bit 2 (/WUE8L): 0/1=> enable/disable P8.0~P8.3 pin change wake up function
Bit 1 (/WUE6H): 0/1=> enable/disable P6.4~P6.7 pin change wake up function
Bit 0 (/WUE6L): 0/1=> enable/disable P6.0~P6.3 pin change wake up function
* Port 6 and Port 8 must avoid input floating when wakeup function is enabled.
The initial state of wakeup function is enabled.
4.2.14 IOC71/TCCCR (TCC Control Register)
(Address: 07h, Bit 0 of R5 = “1”)
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
INT_EDGE
INT
TS
TE
PSRE
TCCP2
TCCP1
TCCP0
Bit 7 (INT_EDGE):
INT_EDGE = ”0”: Interrupt on rising edge of P5.4/INT0 pin
22 •
Product Specification (V1.2) 03.15.2005
(This specification is subject to change without further notice)
EM78P468N
8-BIT Microcontroller
INT_EDGE = ”1”: Interrupt on falling edge of P5.4/INT0 pin
Bit 6 (INT): INT enable flag, this bit is read only
INT = ”0”: interrupt masked by DISI or hardware interrupt
INT = “1”: interrupt enabled by ENI/RETI instructions
Bit 5 (TS): TCC signal source
TS = “0”: internal instruction cycle clock
TS = “1”: transition on TCC pin, TCC period > internal instruction clock period
Bit 4 (TE): TCC signal edge
TE = ”0”: increment by TCC pin rising edge
TE = “1”: increment by TCC pin falling edge
Bit 3~0 (PSRE,TCCP2 ~ TCCP0): TCC pre-scaler bits.
PSRE
TCCP2
TCCP1
TCCP0
TCC rate
0
X
X
X
1:1
1
0
0
0
1:2
1
0
0
1
1:4
1
0
1
0
1:8
1
0
1
1
1:16
1
1
0
0
1:32
1
1
0
1
1:64
1
1
1
0
1:128
1
1
1
1
1:256
4.2.15 IOC81/WDTCR (WDT Control Register)
(Address: 08h, Bit 0 of R5 = “1”)
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
--
--
--
--
WDTE
WDTP2
WDTP1
WDTP0
Bit 7 ~ 4:Not used
Bit 3 (WDTE): watchdog timer enable. This control bit is used to enable the Watchdog
timer,
WDTE = “0”: Disable WDT function.
WDTE = “1”: enable WDT function.
Product Specification (V1.2) 03.15.2005
(This specification is subject to change without further notice)
• 23
EM78P468N
8-BIT Microcontroller
Bit 2 ~ 0 (WDTP2 ~ WDTP0): watchdog timer pre-scaler bits. The WDT source clock is
sub-oscillation frequency.
WDTP2
WDTP1
WDTP0
WDT rate
0
0
0
1:1
0
0
1
1:2
0
1
0
1:4
0
1
1
1:8
1
0
0
1:16
1
0
1
1:32
1
1
0
1:64
1
1
1
1:128
4.2.16 IOC91/CNT12CR (Counter 1, 2 Control Register)
(Address: 09h, Bit 0 of R5 = “1”)
Bit 7
Bit 6
CNT2S
Bit 5
Bit 4
CNT2P2 CNT2P1 CNT2P0
Bit 3
CNT1S
Bit 2
Bit 1
Bit 0
CNT1P2 CNT1P1 CNT1P0
Bit 7(CNT2S):Counter 2 clock source select 0/1 => Fs/ Fm*
(*Fs: sub-oscillator clock, Fm: main-oscillator clock)
Bit 6~4(CNT2P2 ~ CNT2P 0): Counter 2 pre-scaler select bits
CNT2P2
CNT2P1
CNT1P0
Counter 2 scale
0
0
0
1:2
0
0
1
1:4
0
1
0
1:8
0
1
1
1:16
1
0
0
1:32
1
0
1
1:64
1
1
0
1:128
1
1
1
1:256
Bit 3(CNT1S):Counter 1 clock source select 0/1 => Fs/ Fm*
Bit 2~0 (CNT1P2 ~ CNT1P20): Counter 1 pre-scaler select bits
CNT1P2
CNT1P1
CNT1P0
Counter 1 scale
24 •
0
0
0
1:2
0
0
1
1:4
0
1
0
1:8
0
1
1
1:16
1
0
0
1:32
1
0
1
1:64
1
1
0
1:128
1
1
1
1:256
Product Specification (V1.2) 03.15.2005
(This specification is subject to change without further notice)
EM78P468N
8-BIT Microcontroller
4.2.17 IOCA1/HLPWTCR (High/Low Pulse Width Timer Control
Register)
(Address: 0Ah, Bit 0 of R5 = “1”)
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
LPWTS LPWTP2 LPWTP1 LPWTP0 HPWTS HPWTP2 HPWTP1 HPWTP0
Bit 7(LPWTS): low-pulse width timer clock source select 0/1 -> Fs/ Fm*
(*Fs: sub-oscillator clock, Fm: main-oscillator clock)
Bit 6~4 (LPWTP2~ LPWTP0): low-pulse width timer pre-scaler select bits
LPWTP2
LPWTP1
LPWTP0
Low-pulse width timer scale
0
0
0
1:2
0
0
1
1:4
0
1
0
1:8
0
1
1
1:16
1
0
0
1:32
1
0
1
1:64
1
1
0
1:128
1
1
1
1:256
Bit 3(HPWTS): high-pulse width timer clock source select 0/1 -> Fs/ Fm*
Bit 2~0(HPWTP2~ HPWTP0): high-pulse width timer pre-scaler select bits
HPWTP2
HPWTP1
HPWTP0
High-pulse width timer scale
0
0
0
1:2
0
0
1
1:4
0
1
0
1:8
0
1
1
1:16
1
0
0
1:32
1
0
1
1:64
1
1
0
1:128
1
1
1
1:256
4.2.18 IOCB1/P6PH (PORT 6 Pull High Control Register)
(Address: 0Bh, Bit 0 of R5 = “1”)
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
PH67
PH66
PH65
PH64
PH63
PH62
PH61
PH60
Bit 7 ~ Bit 0 (PH67 ~ PH60): The enable bits of PORT 6 pull high function.
PH6x = “0”: disable pin of P6.x internal pull-high resistor function
PH6x = “1”: enable pin of P6.x internal pull-high resistor function
Product Specification (V1.2) 03.15.2005
(This specification is subject to change without further notice)
• 25
EM78P468N
8-BIT Microcontroller
4.2.19 IOCC1/P6OD (PORT 6 Open Drain Control Register)
(Address: 0Ch, Bit 0 of R5 = “1”)
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
OP67
OP66
OP65
OP64
OP63
OP62
OP61
OP60
Bit 7 ~ Bit 0: The enable bits of PORT 6 open drain function.
OD6x = “0”: disable pin of P6.x open drain function
OD6x = “1”: enable pin of P6.x open drain function
4.2.20 IOCD1/P8PH (PORT 8 Pull High Control Register)
(Address: 0Dh, Bit 0 of R5 = “1”)
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
PH87
PH86
PH85
PH84
PH83
PH82
PH81
PH80
Bit 7 ~ Bit 0: The enable bits of PORT 8 pull-high function.
PH8x = ”0”: disable pin of P8.x internal pull-high resistor function
PH8x = “1”: enable pin of P8.x pull-high resistor function
4.2.21
IOCE1/P6PL (PORT 6 Pull-Low Control Register)
(Address: 0Eh, Bit 0 of R5 = “1”)
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
PL67
PL66
PL65
PL64
PL63
PL62
PL61
PL60
Bit 7 ~ Bit 0: The enable bits of PORT 6 pull low function.
PL6x = “0”: disable pin of P6.x internal pull-low resistor function
PL6x = “1”: enable pin of P6.x internal pull-low resistor function
4.3 TCC and WDT Pre-scaler
Two 8-bit counters are available as pre-scalers for the TCC (Time Clock Counter) and
WDT (Watch Dog Timer). The TCCP2~TCCP0 bits of the IOC71 register are used to
determine the ratio of the TCC pre-scaler. Likewise, the WDTP2~WDTP0 bits of the
IOC81 register are used to determine the WDT pre-scaler. The TCC pre-scaler
(TCCP2~TCCP0) is cleared by the instructions each time they are written into TCC,
while the WDT pre-scaler is cleared by the “WDTC” and “SLEP” instructions. Fig.7
depicts the circuit diagram of TCC and WDT.
R1 (TCC) is an 8-bit timer/counter. The clock source of TCC can be selected by internal
instruction clock or external signal input (edge selectable from the TCC control register).
If TCC signal source is from internal instruction clock, TCC will increase by 1 at every
instruction cycle (without pre-scaler). If TCC signal source is from external clock input,
TCC will increase by 1 at every falling edge or rising edge of the TCC pin.
The watchdog timer is a free running on sub-oscillator. The WDT will keep on running
even after the oscillator driver has been turned off. During Normal mode, Green mode, or
26 •
Product Specification (V1.2) 03.15.2005
(This specification is subject to change without further notice)
EM78P468N
8-BIT Microcontroller
Idle mode operation, a WDT time-out (if enabled) will cause the device to reset. The
WDT can be enabled or disabled at any time during the Normal mode and Green mode
by software programming. Refer to WDTE bit of IOC81 register. The WDT time-out
period is equal to (pre-scaler*256/ (Fs/2)).
Data Bus
TCC (R1)
Instruction Clock = Fosc /2
Fosc: CPU operate frequency
TCC
Pin
MUX
Prescaler
PSRE TCCP2~0
(IOC71) (IOC71)
TE (IOC71)
8 to 1 MUX
TCCoverflow interrupt
TS (IOC71)
Fig. 7(a) Block Diagram of TCC
WDT
8 bit counter
WDTE (IOC81)
8 to 1 MUX
Prescaler
WDT Time out
WDTP2~0
(IOC81)
Fs/2
(Fs:Sub oscillator)
Fig. 7(b) Block Diagram of WDT
Product Specification (V1.2) 03.15.2005
(This specification is subject to change without further notice)
• 27
EM78P468N
8-BIT Microcontroller
WDT setting flowchart
START
N
Use WDT function ?
Y
Enable WDT function : set bit 7 of
Code option Word 0 to "0"
Setting WDT prescaler
(IOC81 register)
Disable WDT function : set bit 7 of
Code option Word 0 to "1"
WDTtime= prescaler*256/Fs
Fs: sub-oscillator frequency
Enable WDT
(bit 3 of IOC81)
END
TCC setting flowchart
START
from External Input
TCC clock source?
External/ instruction cycle
from Instruction Cycle
*set clock source from external TCC pin
(set bit 4 of IOC71 to "1")
*choose TCC clock source from instruction cycle
(set bit 4 of IOC71 to "0")
*set P5.6/TCC for TCC input Pin
( set bit 2 of RE to "1" and set bit 6 of IOC 50 to "1")
*choose TCC prescaler
(set by bit 0 to bit 3 of IOC71)
*choose TCC pin operation edge
(set by bit 4 of IOC71)
*choose TCC prescaler
(set by bit 0 to bit 3 of IOC71)
* Enable TCC interrupt Mask
(set bit 0 of IOCF0 to "1")
*Clear TCC interrupt Flag
(set bit 0 of RF to "0")
Enable TCC to start count
(use ENI instruction)
END
28 •
Product Specification (V1.2) 03.15.2005
(This specification is subject to change without further notice)
EM78P468N
8-BIT Microcontroller
4.4 I/O Ports
The I/O registers, (PORT 5, PORT 6, PORT 7and PORT 8), are bi-directional tri-state I/O
ports. PORT 6 and PORT 8 are pulled-high internally by software; PORT 6 is also
pulled-low internally by software. Furthermore, PORT 6 has its open-drain output also
through software. PORT 6 and PORT 8 features an input status changed interrupt (or
wake-up) function and is pulled-high by software. Each I/O pin can be defined as "input"
or "output" pin by the I/O control register (IOC50 ~ IOC80). The I/O registers and I/O
control registers are both readable and writable. The I/O interface circuits are shown in
Fig. 8
NOTE: Open-drain, pull high, and pull down are not shown in the figure.
Fig. 8 The Circuit of I/O Port and I/O Control Register for PORT 5 ~ 8
Product Specification (V1.2) 03.15.2005
(This specification is subject to change without further notice)
• 29
EM78P468N
8-BIT Microcontroller
4.5RESET and Wake-up
A reset can be activated by
„
POR (Power On Reset)
„
WDT timeout. (if enabled)
„
/RESET pin go to low.
Note: The power on reset circuit is always enabled. It will reset CPU at about 1.9V.
Once reset occurs, the following functions are performed
30 •
„
The oscillator is running, or will be started.
„
The program counter (R2/PC) is set to all "0".
„
All I/O port pins are configured as input mode (high-impedance state).
„
The TCC/Watchdog timer and pre-scaler are cleared.
„
When power on, the Bit 5, 6 of R3 and the upper 2 bits of R4 are cleared.
„
Bits of the IOC71 register are set to all "1" except for Bit 6 (INT flag).
„
For other registers, see Table 2 below.
Product Specification (V1.2) 03.15.2005
(This specification is subject to change without further notice)
EM78P468N
8-BIT Microcontroller
Table 2 Summary of the Initialized Values for Registers
Address
0x05
0x06
0x07
0x08
0x09
0x0A
0x0B
0x0C
0x0D
0x0E
0x0F
0x06
0x07
Name
IOC50
(P5CR)
IOC60
(P6CR)
IOC70
(P7CR)
IOC80
(P8CR)
IOC90
(RAM_ADD
R)
IOCA0
(RAM_DB)
IOCB0
(CNT1PR)
IOCC0
(CNT2PR)
IOCD0
(HPWTPR)
IOCE0
(LPWTPR)
IOCF0
(IMR)
IOC61
(WUCR)
IOC71
(TCCCR)
Reset Type
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit Name
IOC57
IOC56
IOC55
IOC54
P8HS
P8LS
P7HS
Power-On
1
1
1
1
0
0
0
/RESET and WDT
1
1
1
1
0
0
0
Wake-Up from Pin
P
P
P
P
P
P
P
Change
Bit Name
IOC67
IOC66
IOC65
IOC64
IOC63
IOC62
IOC61
Power-On
1
1
1
1
1
1
1
/RESET and WDT
1
1
1
1
1
1
1
Wake-Up from Pin
P
P
P
P
P
P
P
Change
Bit Name
IOC77
IOC76
IOC75
IOC74
IOC73
IOC72
IOC71
Power-On
1
1
1
1
1
1
1
/RESET and WDT
1
1
1
1
1
1
1
Wake-Up from Pin
P
P
P
P
P
P
P
Change
Bit Name
IOC87
IOC86
IOC85
IOC84
IOC83
IOC82
IOC81
Power-On
1
1
1
1
1
1
1
/RESET and WDT
1
1
1
1
1
1
1
Wake-Up from Pin
P
P
P
P
P
P
P
Change
Bit Name
X
RAM_A6 RAM_A5 RAM_A4 RAM_A3 RAM_A2 RAM_A1
Power-On
0
0
0
0
0
0
0
/RESET and WDT
0
0
0
0
0
0
0
Wake-Up from Pin
P
P
P
P
P
P
P
Change
RAM_D7
RAM_D6 RAM_D5 RAM_D4 RAM_D3 RAM_D2 RAM_D1
Bit Name
Power-On
U
U
U
U
U
U
U
/RESET and WDT
P
P
P
P
P
P
P
Wake-Up from Pin
P
P
P
P
P
P
P
Change
Bit Name
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Power-On
0
0
0
0
0
0
0
/RESET and WDT
0
0
0
0
0
0
0
Wake-Up from Pin
P
P
P
P
P
P
P
Change
Bit Name
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Power-On
0
0
0
0
0
0
0
/RESET and WDT
0
0
0
0
0
0
0
Wake-Up from Pin
P
P
P
P
P
P
P
Change
Bit Name
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Power-On
0
0
0
0
0
0
0
/RESET and WDT
0
0
0
0
0
0
0
Wake-Up from Pin
P
P
P
P
P
P
P
Change
Bit Name
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Power-On
0
0
0
0
0
0
0
/RESET and WDT
0
0
0
0
0
0
0
Wake-Up from Pin
P
P
P
P
P
P
P
Change
Bit Name
ICIE
LPWTE HPWTE CNT2E CNT1E INT1E
INT0E
Power-On
0
0
0
0
0
0
0
/RESET and WDT
0
0
0
0
0
0
0
Wake-Up from Pin
P
P
P
P
P
P
P
Change
Bit Name
IROCS
X
X
X
/WUE8H /WUE8L /WUE6H
Power-On
0
U
U
U
0
0
0
/RESET and WDT
0
U
U
U
0
0
0
Wake-Up from Pin
P
U
U
U
P
P
P
Change
INT_EDGE
Bit Name
INT
TS
TE
PSRE TCCP2 TCCP1
Power-On
1
0
1
1
1
1
1
/RESET and WDT
1
0
1
1
1
1
1
Wake-Up from Pin
P
P
P
P
P
P
P
Change
Product Specification (V1.2) 03.15.2005
(This specification is subject to change without further notice)
Bit 0
P7LS
0
0
P
IOC60
1
1
P
IOC70
1
1
P
IOC80
1
1
P
RAM_A0
0
0
P
RAM_D0
U
P
P
Bit 0
0
0
P
Bit 0
0
0
P
Bit 0
0
0
P
Bit 0
0
0
P
TCIE
0
0
P
/WUE6L
0
0
P
TCCP0
1
1
P
• 31
EM78P468N
8-BIT Microcontroller
Address
0x08
0x09
0x0A
0x0B
0x0C
0x0D
0x0E
0x00
0x01
0x02
0x03
0x04
0x05
32 •
Name
Reset Type
Bit Name
Power-On
IOC81
(WDTCR) /RESET and WDT
Wake-Up from Pin
Change
Bit Name
Power-On
IOC91
/RESET and WDT
(CNT12CR)
Wake-Up from Pin
Change
Bit Name
Power-On
IOCA1
/RESET and WDT
(HLPWTCR)
Wake-Up from Pin
Change
Bit Name
Power-On
IOCB1
/RESET and WDT
(P6PH)
Wake-Up from Pin
Change
Bit Name
Power-On
IOCC1
/RESET and WDT
(P6OD)
Wake-Up from Pin
Change
Bit Name
Power-On
IOCD1
/RESET and WDT
(P8PH)
Wake-Up from Pin
Change
Bit Name
Power-On
IOCE1
/RESET and WDT
(P6PL)
Wake-Up from Pin
Change
Bit Name
Power-On
R0
/RESET and WDT
(IAR)
Wake-Up from Pin
Change
Bit Name
Power-On
R1
/RESET and WDT
(TCC)
Wake-Up from Pin
Change
Bit Name
Power-On
R2
/RESET and WDT
(PC)
Wake-Up from Pin
Change
Bit Name
Power-On
R3
/RESET and WDT
(SR)
Wake-Up from Pin
Change
Bit Name
Power-On
R4
/RESET and WDT
(RSR)
Wake-Up from Pin
Change
Bit Name
Power-On
R5
/RESET and WDT
(PORT5)
Wake-Up from Pin
Change
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
X
U
U
X
U
U
X
U
U
X
U
U
WDTE
0
0
U
U
U
P
U
CNT2S
0
0
P
Bit 1
Bit 0
P
P
P
CNT2P2 CNT2P1 CNT2P0 CNT1S CNT1P2 CNT1P1 CNT1P0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
P
LPWTS
0
0
Bit 2
WDTP2 WDTP1 WDTP0
1
1
1
1
1
1
P
P
P
P
P
P
LPWTP2 LPWTP1 LPWTP0 HPWTS HPWTP2 HPWTP1 HPWTP0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
P
P
P
P
P
P
P
P
PH67
0
0
PH66
0
0
PH65
0
0
PH64
0
0
PH63
0
0
PH62
0
0
PH61
0
0
PH60
0
0
P
P
P
P
P
P
P
P
OP67
0
0
OP66
0
0
OP65
0
0
OP64
0
0
OP63
0
0
OP62
0
0
OP61
0
0
OP60
0
0
P
P
P
P
P
P
P
P
PH87
0
0
PH86
0
0
PH85
0
0
PH84
0
0
PH83
0
0
PH82
0
0
PH81
0
0
PH80
0
0
P
P
P
P
P
P
P
P
PL67
0
0
PL66
0
0
PL65
0
0
PL64
0
0
PL63
0
0
PL62
0
0
PL61
0
0
PL60
0
0
P
P
P
P
P
P
P
P
Bit 7
U
P
Bit 6
U
P
Bit 5
U
P
Bit 4
U
P
Bit 3
U
P
Bit 2
U
P
Bit 1
U
P
Bit 0
U
P
P
P
P
P
P
P
P
P
Bit 7
0
0
Bit 6
0
0
Bit 5
0
0
Bit 4
0
0
Bit 3
0
0
Bit 2
0
0
Bit 1
0
0
Bit 0
0
0
P
P
P
P
P
P
P
P
Bit 7
0
0
Bit 6
0
0
Bit 5
0
0
Bit 4
0
0
Bit 3
0
0
Bit 2
0
0
Bit 1
0
0
Bit 0
0
0
Jump to address 0x0018 or continue to execute next instruction
X
U
U
PS1
0
0
PS0
0
0
U
P
P
Bank1
0
0
Bank0
0
0
-U
P
T
1
t
P
1
t
Z
U
P
DC
U
P
C
U
P
t
t
P
P
P
-U
P
-U
P
-U
P
-U
P
-U
P
P
P
P
P
P
P
P
P
R57
1
1
R56
1
1
R55
1
1
R54
1
1
X
U
U
X
U
U
X
U
U
IOCPAGE
P
P
P
P
U
U
U
P
0
0
Product Specification (V1.2) 03.15.2005
(This specification is subject to change without further notice)
EM78P468N
8-BIT Microcontroller
Address
0x06
0x7
0x8
0x9
0xA
0xB
0xC
0xD
0xE
0xF
0x10~0x3
F
Name
R6
(PORT6)
R7
(PORT7)
Reset Type
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Bit Name
Power-On
/RESET and WDT
Wake-Up from Pin
Change
Bit Name
Power-On
/RESET and WDT
R67
1
1
R66
1
1
R65
1
1
R64
1
1
R63
1
1
R62
1
1
R61
1
1
R60
1
1
P
P
P
P
P
P
P
P
R77
1
1
R76
1
1
R75
1
1
R74
1
1
R73
1
1
R62
1
1
R71
1
1
R70
1
1
Wake-Up from Pin
Change
Bit Name
Power-On
R8
/RESET and WDT
(PORT8)
Wake-Up from Pin
Change
Bit Name
Power-On
R9
/RESET and WDT
(LCDCR)
Wake-Up from Pin
Change
Bit Name
Power-On
RA
/RESET and WDT
(LCD_ADDR)
Wake-Up from Pin
Change
Bit Name
Power-On
RB
/RESET and WDT
(LCD_DB)
Wake-Up from Pin
Change
Bit Name
Power-On
RC
/RESET and WDT
(CNTER)
Wake-Up from Pin
Change
Bit Name
Power-On
RD
/RESET and WDT
(SBPCR)
Wake-Up from Pin
Change
Bit Name
Power-On
RE
/RESET and WDT
(IRCR)
Wake-Up from Pin
Change
Bit Name
Power-On
RF
/RESET and WDT
(ISR)
Wake-Up from Pin
Change
Bit Name
Power-On
R10~R3F /RESET and WDT
Wake-Up from Pin
Change
P
P
P
P
P
P
P
P
R87
1
1
R86
1
1
R85
1
1
R84
1
1
R83
1
1
R82
1
1
R81
1
1
R80
1
1
P
P
P
P
P
P
P
P
BS
1
1
DS1
1
1
DS0
0
0
LCDEN
0
0
X
U
U
LCDTYPE
0
0
LCDF1
0
0
LCDF0
0
0
P
P
P
P
U
P
P
P
X
0
0
X
0
0
X
0
0
LCD_A4 LCD_A3 LCD_A2 LCD_A1 LCD_A0
0
0
0
0
0
0
0
0
0
0
P
P
P
P
X
U
U
X
U
U
X
U
U
X
U
U
U
U
U
U
X
0
0
X
1
1
X
0
0
X
0
0
P
P
P
P
LCD_D 3 LCD_D 2 LCD_D 1 LCD_D 0
U
P
U
P
U
P
P
P
P
LPWTEN HPWTEN CNT2EN
0
0
0
0
0
0
U
P
P
CNT1EN
0
0
P
P
0
P
P
P
P
P
X
U
U
CLK2
0
0
CLK1
0
0
CLK0
0
0
IDLE
1
1
BF1
0
0
BF0
0
0
CPUS
*1
*1
U
P
P
P
P
P
P
P
IRE
0
0
HF
0
0
LGP
0
0
X
U
U
IROUTE
0
0
TCCE
0
0
EINT1
0
0
EINT0
0
0
P
P
P
ICIF
0
0
LPWTF HPWTF
0
0
0
0
U
P
P
P
P
CNT2F
0
0
CNT1F
0
0
INT1F
0
0
INT0F
0
0
TCIF
0
0
N
P
P
P
P
P
P
P
Bit 7
U
P
Bit 6
U
P
Bit 5
U
P
Bit 4
U
P
Bit 3
U
P
Bit 2
U
P
Bit 1
U
P
Bit 0
U
P
P
P
P
P
P
P
P
P
X: not used. U: unknown or don’t care. P: previous value before reset. –: Not defined
t : check R3 register explain. N: Monitors interrupt operation status.
Note 1: This bit is equal to code option HLFS bit data
Product Specification (V1.2) 03.15.2005
(This specification is subject to change without further notice)
• 33
EM78P468N
8-BIT Microcontroller
The controller can be awakened from sleep mode and idle mode. The wake-up signals
are listed as follows:
Wakeup signal
Sleep mode
Idle mode
Green mode Normal mode
*1
Wake-up
+ interrupt
+ next instruction
Interrupt
Interrupt
INT0 pin
IOCF0 bit1=1
Wake-up
Wake-up
+ interrupt
+ interrupt
+ next instruction + next instruction
Interrupt
Interrupt
INT1 pin
IOCF0 bit2=1
Wake-up
Wake-up
+ interrupt
+ interrupt
+ next instruction + next instruction
Interrupt
Interrupt
Counter 1
IOCF0 bit3=1
Wake-up
+ interrupt
+ next instruction
Interrupt
Interrupt
Interrupt
Interrupt
TCC time out
IOCF0 bit0=1
X
X
Counter 2
IOCF0 bit4=1
X
Wake-up
+ interrupt
+ next instruction
High-pulse timer
IOCF0 bit5=1
X
Wake-up
+ interrupt
+ next instruction
Interrupt
Interrupt
Low-pulse timer
IOCF0 bit6=1
X
Wake-up
+ interrupt
+ next instruction
Interrupt
Interrupt
Wake-up
+ next instruction
X
X
Wake-up
Wake-up
(input status change
+ interrupt
+ interrupt
wake-up)
+ next instruction + next instruction
Bit 7 of IOCF0 = “1”
X
X
RESET
RESET
Port6, Port 8
(input status change Wake-up
wake-up)
+ next instruction
Bit 7 of IOCF0 = “0”
Port6, Port 8
WDT time out
X
RESET
Note 1: Only external TCC pin can Wake-up from idle mode.
34 •
Product Specification (V1.2) 03.15.2005
(This specification is subject to change without further notice)
EM78P468N
8-BIT Microcontroller
4.6 Oscillator
4.6.1
Oscillator Modes
This LSI can operate in the three different oscillator modes from main oscillator (R-OSCI,
OSCO), such as RC oscillator with external resistor and Internal capacitor mode (ERIC);
crystal oscillator mode; and PLL operation mode (R-OSCI connected 0.01μF capacitor to
Ground). User can select one of them by programming FMMD1 and FMMD0 in the
CODE options register. The sub-oscillator can be operated in crystal mode and ERIC
mode. Table 3 below shows how these three modes are defined.
Table 3 Oscillator Modes as defined by FSMD, FMMD1, FMMD0.
FSMD
FMMD1 FMMD0
Main clock
Sub-clock
0
0
0
RC type (ERIC)
RC type (ERIC)
0
0
1
Crystal type
RC type (ERIC)
0
1
X
PLL type
RC type (ERIC)
1
0
0
RC type (ERIC)
Crystal type
1
0
1
Crystal type
Crystal type
1
1
X
PLL type
Crystal type
Table 4 Summary of maximum operating speeds
Conditions
VDD
Fxt max.(MHz)
Two clocks
4.6.2
2.3
4
3.0
8
5.0
10
Phase Lock Loop (PLL Mode)
When operate on PLL mode, the High frequency determined by sub-oscillator. We can
choose RD register to change high oscillator frequency. The relation between high
frequency (Fm) and sub-oscillator is shown as below table:
R-OSCI
0.01uF
C1
Xin
EM78P468N
XTAL
Xout
C2
Circuit for PLL mode
Product Specification (V1.2) 03.15.2005
(This specification is subject to change without further notice)
• 35
EM78P468N
8-BIT Microcontroller
Bit 6~4 (CLK2~0) of RD: main clock selection bits for PLL mode (code option select)
CLK2
CLK1
CLK0
Main clock
Example Fs=32.768K
4.6.3
0
0
0
Fs*130
4.26 MHz
0
0
1
Fs*65
2.13 MHz
0
1
0
Fs*65/2
1.065 MHz
0
1
1
Fs*65/4
532 KHz
1
X
X
Fs*244
8 MHz
Crystal Oscillator/Ceramic Resonators (XTAL)
This LSI can be driven by an external clock signal through the R-OSCI pin as shown in
Fig.9 below.
In most applications, the R-OSCI pin and the OSCO pin can be connected with a crystal
or ceramic resonator to generate oscillation. Fig. 10 depicts such circuit. Table 5
provides the recommended values of C1 and C2. Since each resonator has its own
attribute, user should refer to its specification for appropriate values of C1 and C2. RS, a
serial resistor, may be necessary for AT strip cut crystal or low frequency mode.
R-OSCI
EM78P468N
OSCO
Fig.9 Circuit for External Clock Input
C1
R-OSCI
EM78P468N
OSCO
XTAL
Rs
C1
Xin
EM78P468N
Xout
C2
XTAL
Rs
C2
Fig. 10 Circuit for Crystal/Resonator
Table 5 Capacitor Selection Guide for Crystal Oscillator or Ceramic Resonators
Oscillator source
Oscillator Type
Ceramic
Resonators
Main oscillator
Crystal Oscillator
Sub-oscillator
36 •
Crystal Oscillator
Frequency
C1 (pF)
C2 (pF)
455 kHz
100~150
100~150
2.0 MHz
20~40
20~40
4.0MHz
10~30
10~30
455KHz
20~40
20~150
1.0MHz
15~30
15~30
2.0MHz
15
15
4.0MHz
15
15
32.768kHz
25
25
Product Specification (V1.2) 03.15.2005
(This specification is subject to change without further notice)
EM78P468N
8-BIT Microcontroller
4.6.4
RC Oscillator Mode with Internal Capacitor
If both precision and cost are taken into consideration, This LSI also offers a special
oscillation mode, which is equipped with an internal capacitor and an external resistor
connected to VDD. The internal capacitor functions as temperature compensator. In
order to obtain more accurate frequency, a precise resistor is recommended.
VDD
Rext
R-OSCI or Xin
EM78P468N
Fig. 11 Circuit for Internal C Oscillator Mode
Table 6 RC Oscillator Frequencies
Pin
Rext
Average Fosc 5V, 25°C Average Fosc 3V, 25°C
R-OSCI
Xin
51k
2.2221 MHz
2.1972 MHz
100k
1.1345 MHz
1.1203 MHz
300k
381.36KHz
374.77 KHz
2.2M
32.768KHz
32.768KHz
Note: Measured from QFP packages with frequency drift of about ±30%.
Values are provided for design reference only.
Product Specification (V1.2) 03.15.2005
(This specification is subject to change without further notice)
• 37
EM78P468N
8-BIT Microcontroller
4.7 Power-on Considerations
Any microcontroller (as with this LSI) is not warranted to start operating properly before
the power supply stabilizes in steady state. This LSI is equipped with Power On Reset
(POR) with detection level range of 1.9V to 2.1V. The circuitry eliminates the extra
external reset circuit but will work well only if the VDD rises quickly enough (50 ms or
less). However, under critical applications, extra devices are still required to assist in
solving power-on problems.
4.7.1
External Power-on Reset Circuit
This circuit implements an external RC to produce a reset pulse (see Fig.12). The pulse
width (time constant) should be kept long enough to allow VDD to reach minimum
operation voltage. This circuit is used when the power supply rise time is slow. Because
the current leakage from the /RESET pin is about ±5µA, it is recommended that R should
not be great than 40K. In this way, the voltage at Pin /RESET is held below 0.2V. The
diode (D) acts as a short circuit at power-down. The capacitor, C, is discharged rapidly
and fully. Rin, the current-limited resistor, prevents high current discharge or ESD
(electrostatic discharge) from flowing into Pin /RESET.
Fig. 12 External Power on Reset Circuit
4.7.2
Residue-Voltage Protection
When battery is replaced, device power (VDD) is disconnected but residue-voltage
remains. The residue-voltage may trips below minimum VDD, but above zero. This
condition may cause poor power on reset. Fig.13 and Fig.14 show how to build a
residue-voltage protection circuit
Fig. 13 Circuit 1 for the Residue Voltage Protection
38 •
Product Specification (V1.2) 03.15.2005
(This specification is subject to change without further notice)
EM78P468N
8-BIT Microcontroller
Fig. 14 Circuit 2 for the Residue Voltage Protection
4.8 Interrupt
This LSI has eight interrupt sources as listed below:
„
TCC overflow interrupt.
„
External interrupt P5.4/INTO pin
„
External interrupt P5.5/INT1 pin
„
Counter 1 underflow interrupt
„
Counter 2 underflow interrupt
„
High-pulse width timer underflow interrupt
„
Low-pulse width timer underflow interrupt
„
Port 6, Port 8 input status change wake-up
This IC has internal interrupts which are falling edge triggered or as follows:
„
TCC timer overflow interrupt,
„
Four 8-bits down counter/timer underflow interrupt
If these interrupt sources change signal from high to low, the RF register will generate “1”
flag to corresponding register if the IOCF0 register is enabled.
RF is the interrupt status register. It records the interrupt request in flag bit. IOCF0 is the
interrupt mask register. Global interrupt is enabled by ENI instruction and disabled by
DISI instruction. When one of the interrupts (when enabled) is generated, it will cause the
next instruction to be fetch from address 0003H~0018H according to interrupt source.
With this LSI, each individual interrupt source has its own interrupt vector as depicted in
Table 3. Before the interrupt subroutine is executed, the contents of ACC and the R3
register are initially saved by hardware. After the interrupt service routine is completed,
ACC and R3 are restored. The existing interrupt service routine does not allow other
interrupt service routine to be executed. So if other interrupts occur while the existing
interrupt service routine is being executed, the hardware will save the later interrupts.
Only after the existing interrupt service routine is completed that the next interrupt
service routine is executed.
Product Specification (V1.2) 03.15.2005
(This specification is subject to change without further notice)
• 39
EM78P468N
8-BIT Microcontroller
InterruptOccur
InterruptSource
ACC
STACKACC
ENI/ DISI
R3
STACKR3
RETI
Fig. 15. Interrupt Backup Diagram
Table 3 Interrupt Vector
Interrupt Vector
Interrupt Status
0003H
TCC overflow interrupt.
0006H
External interrupt P5.4/INT0 pin
0009H
External interrupt P5.5/INT1 pin
000CH
Counter 1 underflow interrupt
000FH
Counter 2 underflow interrupt
0012H
High-pulse width timer underflow interrupt
0015H
Low-pulse width timer underflow interrupt
0018H
PORT 6, PORT 8 input status change wake-up
4.9 LCD Driver
This LSI can drive LCD of up to 32 segments and 4 commons that can drive a total of
4*32 dots. LCD block is made up of LCD driver, display RAM, segment output pins,
common output pins, and LCD operating power supply pins. This circuit works on normal
mode, green mode and idle mode. The LCD duty; bias; the number of segment; the
number of common and frame frequency are determined by the LCD controller register.
The basic structure contains a timing control that uses a subsystem clock to generate the
proper timing for different duty and display accesses. The R9 register is a command
register for LCD driver which includes LCD enable/disable, bias (1/2 and 1/3), duty (1/2,
1/3, 1/4), and LCD frame frequency control. The register RA is an LCD contrast and LCD
RAM address control register. The register RB is an LCD RAM data buffer. LCD booster
circuit can change operation frequency to improve VLCD2 and VLCD3 drive capability.
The control register is explained as follows.
R9/LCDCR (LCD Control Register)
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
BS
DS1
DS0
LCDEN
--
LCDTYPE
LCDF1
LCDF0
Bit 7 (BS): LCD bias select bit, 0/1=>(1/2 bias) / (1/3 bias)
Bit 6 ~ 5 (DS1 ~ DS0): LCD duty select
DS1
DS0
LCD Duty
40 •
0
0
1/2 duty
0
1
1/3 duty
1
X
1/4 duty
Product Specification (V1.2) 03.15.2005
(This specification is subject to change without further notice)
EM78P468N
8-BIT Microcontroller
Bit 4 (LCDEN): LCD enable bit: 0/1 -> LCD circuit disable/enable
When LCD function is disabled, all common/segment output is set to ground (GND) level
Bit 3: Not used
Bit 2 (LCDTYPE): LCD drive waveform type select bit
LCDTYPE = “0”: “A” type waveform
LCDTYPE = “1”: “B” type waveform
Bit 1 ~ 0(LCDF1 ~ LCDF0): LCD frame frequency control bits
LCD frame frequency (e.g. Fs=32.768KHz)
LCDF1
LCDF0
1/2 duty
1/3 duty
1/4 duty
0
0
Fs/(256*2)=64.0
Fs/(172*3)=63.5
Fs/(128*4) =64.0
0
1
Fs/(280*2)=58.5
Fs/(188*3)=58.0
Fs/(140*4) =58.5
1
0
Fs/(304*2)=53.9
Fs/(204*3)=53.5
Fs/(152*4) =53.9
1
1
Fs/(232*2)=70.6
Fs/(156*3)=70.0
Fs/(116*4) =70.6
Fs: sub-oscillator frequency
RA/LCD_ADDR (LCD Address)
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
0
0
0
LCD_A4
LCD_A3
LCD_A2
LCD_A1
LCD_A0
Bit 7 ~ 5: Not used, fixed to “0”
Bit 4 ~ 0 (LCDA4 ~ LCDA0): LCD RAM address
RA
(LCD address) Bit 7 ~4
RB (LCD data buffer)
Bit 3
Bit 2
Bit 1
Bit 0
(LCD_D3) (LCD_D2) (LCD_D1) (LCD_D0)
Segment
00H
--
SEG0
01H
--
SEG1
02H
--
SEG2
|
|
|
1DH
--
SEG29
1EH
--
SEG30
1FH
--
SEG31
Common
X
COM3
COM2
COM1
COM0
RB/LCD_DB (LCD Data Buffer)
Bit 7
Bit 6
Bit 5
Bit 4
--
--
--
--
Bit 3
Bit 2
Bit 1
Bit 0
LCD_D 3 LCD_D 2 LCD_D 1 LCD_D 0
Bit 7 ~ 4: Not used
Bit 3 ~ 0 (LCD_D3 ~ LCD_D0): LCD RAM data transfer registers
Product Specification (V1.2) 03.15.2005
(This specification is subject to change without further notice)
• 41
EM78P468N
8-BIT Microcontroller
RD/SBPCR (System, Booster and PLL Control Registers)
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
--
CLK2
CLK1
CLK0
IDLE
BF1
BF0
CPUS
Bit 2 ~ 1 (BF1 ~ 0): LCD booster frequency select bits
BF1
BF0
Booster frequency
0
0
Fs
0
1
Fs/4
1
0
Fs/8
1
1
Fs/16
The initial setting flowchart for LCD function
IC RESET occur
*Set Port 7 snd Port 8 for general I/O or LCD segment (IOC50)
*it must be set to output port w hen the pin of port 7 and the pin of port 8 for LCD
segemnt (IOC70 and IOC80)
Set LCD Type, duty, bias, LCD frame frequency (R9)
Set LCD Booster Frequency (RD)
Clear all LCD RAM (RA and RB)
Enable LCD function (R9)
Use LCD address and LCD data buffer to implment user's applications. (RA and RB)
END
Fig.16. The Initial Setting Flowchart for LCD Function
42 •
Product Specification (V1.2) 03.15.2005
(This specification is subject to change without further notice)
EM78P468N
8-BIT Microcontroller
The connecting of boosting circuits for LCD voltage is as below:
VDD
VLCD2(2*VDD/3)
VA
VB
VLCD3(1*VDD/3)
GND
External circuit for 1/3 Bias
VDD
VLCD2(VDD/2)
VA
VB
VLCD3(VDD/2)
GND
External circuit for 1/2 Bias
Fig. 17 The Connection of Charge Bump Circuit (Cext=0.1uf )
Product Specification (V1.2) 03.15.2005
(This specification is subject to change without further notice)
• 43
EM78P468N
8-BIT Microcontroller
1 frame
1 frame
VDD
COM 0
VLCD2,3
COM 1
GND
VDD
VDD
VLCD2,3
GND
GND
VDD
SEG N
VLCD2,3
GND
GND
VDD
VDD
VLCD2,3
VLCD2,3
GND
ON
COM 1
VDD
VLCD2,3
SEG N - COM0
VLCD2,3
GND
VLCD2,3
SEG N
VDD
COM 0
-VLCD2,3
SEG N - COM0
GND
ON
-VLCD2,3
-VDD
-VDD
VDD
VDD
VLCD2,3
SEG N - COM1
VLCD2,3
SEG N - COM1
GND
OFF
GND
OFF
-VLCD2,3
1/2 bias, 1/2 duty
A type
-VLCD2,3
-VDD
1/2 bias, 1/2 duty
B type
-VDD
Fig. 18 LCD Waveform for 1/2 Bias, 1/2 Duty
1frame
1frame
VDD
VDD
VLCD2,3
COM 0
GND
GND
VDD
VDD
VLCD2,3
COM 1
VLCD2,3
GND
VDD
VDD
COM 2
VLCD2,3
GND
GND
VDD
VDD
VLCD2,3
SEG N
COM 1
GND
VLCD2,3
COM 2
VLCD2,3
COM 0
SEG N
VLCD2,3
GND
GND
VDD
VDD
VLCD2,3
VLCD2,3
GND
SEG N - COM0
ON
-VLCD2,3
SEG N - COM0
GND
ON
-VLCD2,3
-VDD
-VDD
VDD
VDD
VLCD2,3
VLCD2,3
SEG N - COM1
GND
OFF
-VLCD2,3
1/2 bias, 1/3 duty
A type
-VDD
GND
SEG N - COM1
OFF
-VLCD2,3
1/2 bias, 1/3 duty
B type
-VDD
Fig. 19 LCD Waveform for 1/2 Bias, 1/3 Duty
44 •
Product Specification (V1.2) 03.15.2005
(This specification is subject to change without further notice)
EM78P468N
8-BIT Microcontroller
1 frame
1 frame
VDD
VDD
VLCD2
VLCD2
COM 0
COM 0
VLCD3
VLCD3
GND
GND
VDD
VDD
VLCD2
VLCD2
COM 1
COM 1
VLCD3
VLCD3
GND
GND
VDD
VDD
VLCD2
COM 2
VLCD2
COM 2
VLCD3
VLCD3
GND
GND
VDD
VDD
VLCD2
VLCD2
SEG N
SEG N
VLCD3
VLCD3
GND
GND
VDD
VDD
VLCD3
SEG N - COM0
VLCD3
SEG N - COM0
GND
GND
ON
ON
-VLCD3
-VLCD3
-VDD
-VDD
VDD
VDD
VLCD3
SEG N - COM1
VLCD3
SEG N - COM1
GND
GND
OFF
OFF
-VLCD3
-VLCD3
1/3 bias, 1/3 duty
A type
-VDD
1/3 bias, 1/3 duty
B type
-VDD
Fig. 20 LCD Waveform for 1/3 Bias, 1/3 Duty
1 frame
1 frame
VDD
VDD
VLCD2
COM 0
VLCD2
COM 0
VLCD3
VLCD3
GND
GND
VDD
VDD
VLCD2
COM 1
VLCD2
COM 1
VLCD3
VLCD3
GND
GND
VDD
COM 2
VLCD2
VDD
COM 2
VLCD2
VLCD3
VLCD3
GND
GND
VDD
VDD
VLCD2
SEG N
VLCD2
SEG N
VLCD3
VLCD3
GND
GND
VDD
SEG N COM0
VLCD3
VDD
SEG N COM0
VLCD3
GND
ON
GND
ON
-VLCD3
SEG N COM1
-VLCD3
-VDD
-VDD
VDD
VDD
VLCD3
SEG N COM1
VLCD3
GND
OFF
GND
OFF
-VLCD3
-VDD
1/3 bias, 1/4 duty
A type
-VLCD3
1/3 bias, 1/4 duty
B type
-VDD
Fig. 21 LCD Waveform for 1/3 Bias, 1/4 Duty
Product Specification (V1.2) 03.15.2005
(This specification is subject to change without further notice)
• 45
EM78P468N
8-BIT Microcontroller
4.10 Infrared Remote Control Application / PWM Waveform
Generate
This LSI can output infrared carrier in a friendly manner or in PWM standard waveform.
The IR and PWM waveform generated functions include an 8-bit down count
timer/counter, high-pulse width timer, low-pulse width timer, and IR control register. The
IR system block diagram is show in Fig.21, The IROUT pin waveform is determined by IR
control register (RE), IOC90 (Counter 1, 2 control register), IOCA0 (high-pulse width
timer, low-pulse width timer control register), IOCC0 (Counter 2 preset), IOCD0
(high-pulse width timer preset register), and IOCE0 (low-pulse width timer preset
register). Details on Fcarrier, high-pulse time, and low pulse time are explained as
follows:
If Counter 2 source clock is FT (this clock source can set by IOC91);
FT
Fcarrier =
2 * (1 + decimal of counter 2 preset value(IOCC0)) * prescaler
If high-pulse width timer source clock is FT (this clock source can set by IOCA1);
Thigh
pulse time
=
prescaler * (1 + decimal of high
pulse width timer value(IOCD0))
FT
If low-pulse width timer source clock is FT (this clock source can set by IOCA1);
Tlow
pulse time
=
prescaler * (1 + decimal of low
pulse width timer value(IOCE0))
FT
Pre-s caler
(IOCA 1)
Fs
High-Pulse Width Timer
(IOCD0)
Fm
Low -Puls e Width Timer
( IOCE0)
8
8
A uto-reload buf f er
Pre-s caler
(IOC A 1)
Pre-s caler
(IOC91)
A uto-reload buf f er
8
8
8 bit dow n counter
8 bit dow n c ounter
8
Fcarrier
8
H/W Modulator Circuit
8 bit dow n c ounter
IROUTpin
8
A uto-reload buf f er
HF
LGP
IRE
8
Counter 2
(IOCC0)
RE register
Fm: main oscillator frequency; Fs: sub-oscillator frequency
Fig. 21 IR/PWM System Block Diagram
46 •
Product Specification (V1.2) 03.15.2005
(This specification is subject to change without further notice)
EM78P468N
8-BIT Microcontroller
The IROUT output waveform is further explained in the following figures:
Fig. 22 LGP=0, HF=1, the IROUT waveform can modulate Fcarrier waveform when in
low-pulse width time.
Fig. 23 LGP=0, HF=0, the IROUT waveform cannot modulate Fcarrier waveform when
in low-pulse width time. So IROUT waveform is determined by high-pulse time
and low-pulse time. This mode can produce standard PWM waveform
Fig. 24 LGP=0, HF=1, the IROUT waveform can modulate Fcarrier waveform when in
low-pulse width time. When IRE goes from high to low, the output waveform of
IROUT will keep on transmitting till high-pulse width timer interrupt occurs.
Fig. 25 LGP=0, HF=0, the IROUT waveform can not modulate Fcarrier waveform when
in low-pulse width time. So IROUT waveform is determined by high-pulse time
and low-pulse time. This mode can produce standard PWM waveform. When
IRE goes from high to low, the output waveform of IROUT will keep on
transmitting till high-pulse width timer interrupt occurs.
Fig.26
LGP=1, when this bit is set to high level, the high-pulse width timer is ignored.
So IROUT waveform output from low-pulse width timer is established.
Fcarrier
low-pulse width
high-pulse width
low-pulse width
high-pulse width
HF
start
IRE
IROUT
Fig. 22 LGP=0, IROUT Pin Output Waveform
Fcarrier
low-pulse width
high-pulse width
low-pulse width
high-pulse width
HF
start
IRE
IROUT
Fig. 23 LGP=0, IROUT Pin Output Waveform
Product Specification (V1.2) 03.15.2005
(This specification is subject to change without further notice)
• 47
EM78P468N
8-BIT Microcontroller
Fcarrier
low-pulse width
high-pulse width
low-pulse width
high-pulse width
HF
start
IRE
IR disable
IROUT
Always high-level
Fig. 24 LGP=0, IROUT Pin Output Waveform
Fcarrier
low-pulse width
high-pulse width
low-pulse width
high-pulse width
HF
start
IRE
IR disable
IROUT
Always high-level
Fig. 25 LGP=0, IROUT Pin Output Waveform
Fcarrier
low-pulse width
Low-pulse width
low-pulse width
high-pulse width
HF
start
IRE
IR disable
IROUT
Always high-level
Fig. 26 LGP=1, IROUT Pin Output Waveform
48 •
Product Specification (V1.2) 03.15.2005
(This specification is subject to change without further notice)
EM78P468N
8-BIT Microcontroller
IR/PWM function enable flowchart
STRAT
STRAT
SET P5.7 to OUTPUT state (IOC 50)
SET P5.7 for IR/PWM Function Output Pin (RE)
SET P5.7 to OUTPUT state (IOC 50)
SET P5.7 for IR/PWM Function Output Pin (RE)
SET Counter 2 clock source and prescaler (IOC91)
SET High pulse width timer, Low pulse width timer
source clock and prescaler (IOCA1)
SET Counter 2 (IOC0), High pulse width timer
(IOD0), Low pulse width timer (IOCE0)preset value
SET High pulse width timer, Low pulse width timer
source clock and prescaler (IOCA1)
High pulse width timer (IOD0), Low pulse width timer
(IOCE0)preset value
Enable IR (RE)
HF="0", and IRE="1"
Enable IR (RE)
HF="1", and IRE="1"
Enable HPWT and LPWT Interrupt
Set IOCF0 and ENI instruction
Enable counter 2, high pulse width timer and Low
pulde width timer (RC)
END
(a) IR application
Enable HPWT and LPWT Interrupt
Set IOCF0 and ENI instruction
Enable high pulse width timer and Low pulde width
timer (RC)
END
(b) PWM application
Fig. 27 IR/PWM Function Enable Flowchart
Product Specification (V1.2) 03.15.2005
(This specification is subject to change without further notice)
• 49
EM78P468N
8-BIT Microcontroller
4.11 Code Options
The EM78P468N has one Code Option word that is not a part of the normal program
memory. The option bits cannot be accessed during normal program execution.
Code Option Register and Customer ID Register arrangement distribution:
Word1 of code options is for customer ID code application.
Word 1
Bit12~Bit 0
Word 0 of Code Options is for IC function setting. The following are the settings for OTP
IC programming:
Word 0
Bit12~10
1
Bit9
Bit8
Bit7
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0
CYES HLFS ENWDTB FSMD FMMD1 FMMD0 HLP
PR2
PR1
PR0
• Bit 12 ~ 10: Not used.
These bits are set to “1” all the time.
• Bit 9 (CYES): Cycle select for JMP and CALL instructions
CYES = “0”: only one instruction cycle (JMP or CALL) can be executed
CYES = “1”: two instructions cycles (JMP and CALL) can be executed
• Bit 8 (HLFS): main or sub-oscillator select
HLFS = “0”: CPU is set to select sub-oscillator when reset occurs.
HLFS = “1”: CPU is set to select main-oscillator when reset occurs.
• Bit 7(ENWDTB): Watchdog timer enable/disable bit.
ENWDTB = “0”: Enable watchdog timer.
ENWDTB = “1”: Disable watchdog timer.
• Bit 6 (FSMD): sub-oscillator type selection.
• Bit 5, 4 (FMMD1, 0): main Oscillator type selection.
50 •
FSMD
FMMD1
FMMD0
Main Oscillator Type
Sub Oscillator Type
0
0
0
RC type
RC type
0
0
1
XTAL type
RC type
0
1
X
PLL type
RC type
1
0
0
RC type
XTAL type
1
0
1
XTAL type
XTAL type
1
1
X
PLL type
XTAL type
Product Specification (V1.2) 03.15.2005
(This specification is subject to change without further notice)
EM78P468N
8-BIT Microcontroller
• Bit 3 (HLP): Power consumption selection. If your system usually runs in green mode, it
must be set to low power consumption to help support the energy saving issue. We
recommend that low power consumption mode is slected.
HLP = “0”: Low power consumption mode
HLP = “1”: High power consumption mode
Bit 2~0 (PR2~PR0): Protect Bit
PR2~PR0 are protect bits as explained below:
PR2
PR1
PR0
Protect
1
1
1
Disable
Others
4.12
Enable
Instruction Set
Each instruction in the instruction set is a 13-bit word divided into an OP code and one or
more operands. Normally, all instructions are executed within one single instruction cycle
(one instruction consists of 2 oscillator periods), unless the program counter is changed
by instruction "MOV R2,A", "ADD R2,A", or by instructions of arithmetic or logic operation
on R2 (e.g. "SUB R2,A", "BS(C) R2,6", "CLR R2", ⋅⋅⋅⋅). In this case, the execution takes
two instruction cycles.
If for some reasons, the specification of the instruction cycle is not suitable for certain
applications, try modifying the instruction as follows:
Execute within two instruction cycles the "JMP", "CALL", "RET", "RETL", & "RETI"
instructions, or the conditional skip instructions ("JBS", "JBC", "JZ", "JZA", "DJZ",
"DJZA") which were tested to be true. Also execute within two instruction cycles the
instructions that are written to the program counter.
Additionally, the instruction set offers the following features:
(1) Every bit of any register can be set, cleared, or tested directly.
(2) The I/O register can be regarded as general register. That is, the same instruction
can operate on I/O register.
The symbol "R" represents a register designator that specifies which one of the registers
(including operational registers and general purpose registers) is to be utilized by the
instruction. "b" represents a bit field designator that selects the value for the bit that is
located in the register "R", and affects operation. "k" represents an 8 or 10-bit constant or
literal value.
Product Specification (V1.2) 03.15.2005
(This specification is subject to change without further notice)
• 51
EM78P468N
8-BIT Microcontroller
INSTRUCTION BINARY
HEX
0
0
0
0
0
0
0
0
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0001
0001
0001
0000
0001
0011
0100
rrrr
0000
0001
0010
0000
0001
0003
0004
000r
0010
0011
0012
NOP
DAA
SLEP
WDTC
IOW
ENI
DISI
RET
0
0000
0001
0011
0013
RETI
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0000
0000
0000
0000
0001
0001
0001
0001
0010
0010
0010
0010
0011
0011
0011
0011
0100
0100
0100
0100
0101
0101
0101
0101
0001
01rr
1000
11rr
00rr
01rr
10rr
11rr
00rr
01rr
10rr
11rr
00rr
01rr
10rr
11rr
00rr
01rr
10rr
11rr
00rr
01rr
10rr
11rr
rrrr
rrrr
0000
rrrr
rrrr
rrrr
rrrr
rrrr
rrrr
rrrr
rrrr
rrrr
rrrr
rrrr
rrrr
rrrr
rrrr
rrrr
rrrr
rrrr
rrrr
rrrr
rrrr
rrrr
001r
00rr
0080
00rr
01rr
01rr
01rr
01rr
02rr
02rr
02rr
02rr
03rr
03rr
03rr
03rr
04rr
04rr
04rr
04rr
05rr
05rr
05rr
05rr
IOR
MOV
CLRA
CLR
SUB
SUB
DECA
DEC
OR
OR
AND
AND
XOR
XOR
ADD
ADD
MOV
MOV
COMA
COM
INCA
INC
DJZA
DJZ
R
A,
R,
R
R
A,
R,
A,
R,
A,
R,
A,
R,
A,
R,
R
R
R
R
R
R
0
0110
00rr
rrrr
06rr
RRCA
R
0
0110
01rr
rrrr
06rr
RRC
R
0
0110
10rr
rrrr
06rr
RLCA
R
0
0110
11rr
rrrr
06rr
RLC
R
0
0111
00rr
rrrr
07rr
SWAPA
R
0
0
0
0
0
0111
0111
0111
100b
101b
01rr
10rr
11rr
bbrr
bbrr
rrrr
rrrr
rrrr
rrrr
rrrr
07rr
07rr
07rr
0xxx
0xxx
SWAP
JZA
JZ
BC
BS
R
R
R
R,
R,
52 •
MNEMONIC
OPERATION
R
R
R,
A
R
A
R
A
R
A
R
A
R
A
R
R
b
b
No Operation
Decimal Adjust A
0 → WDT, Stop oscillator
0 → WDT
A → IOCR
Enable Interrupt
Disable Interrupt
[Top of Stack] → PC
[Top of Stack] → PC,
Enable Interrupt
IOCR → A
A→R
0→A
0→R
R-A → A
R-A → R
R-1 → A
R-1 → R
A∨R→A
A∨R→R
A&R→A
A&R→R
A⊕R→A
A⊕R→R
A+R→A
A+R→R
R→A
R→R
/R → A
/R → R
R+1 → A
R+1 → R
R-1 → A, skip if zero
R-1 → R, skip if zero
R(n) → A(n-1),
R(0) → C, C → A(7)
R(n) → R(n-1),
R(0) → C, C → R(7)
R(n) → A(n+1),
R(7) → C, C → A(0)
R(n) → R(n+1),
R(7) → C, C → R(0)
R(0-3) → A(4-7),
R(4-7) → A(0-3)
R(0-3) ↔ R(4-7)
R+1 → A, skip if zero
R+1 → R, skip if zero
0 → R(b)
1 → R(b)
STATUS
AFFECTED
None
C
T, P
T, P
None <Note1>
None
None
None
None
None <Note1>
None
Z
Z
Z, C, DC
Z, C, DC
Z
Z
Z
Z
Z
Z
Z
Z
Z, C, DC
Z, C, DC
Z
Z
Z
Z
Z
Z
None
None
C
C
C
C
None
None
None
None
None
None
Product Specification (V1.2) 03.15.2005
(This specification is subject to change without further notice)
EM78P468N
8-BIT Microcontroller
INSTRUCTION BINARY
HEX
MNEMONIC
0
0
110b
111b
bbrr
bbrr
rrrr
rrrr
0xxx
0xxx
JBC
JBS
R,
R,
1
00kk
kkkk
kkkk
1kkk
CALL
k
1
1
1
1
1
1
1
1
1
1
01kk
1000
1001
1010
1011
1100
1101
1110
1110
1111
kkkk
kkkk
kkkk
kkkk
kkkk
kkkk
kkkk
1000
1001
kkkk
kkkk
kkkk
kkkk
kkkk
kkkk
kkkk
kkkk
00kk
00kk
kkkk
1kkk
18kk
19kk
1Akk
1Bkk
1Ckk
1Dkk
1E8k
1E9K
1Fkk
JMP
MOV
OR
AND
XOR
RETL
SUB
PAGE
BANK
ADD
k
A,
A,
A,
A,
k
A,
k
k
A,
OPERATION
b
b
k
k
k
k
k
k
if R(b)=0, skip
if R(b)=1, skip
PC+1 → [SP],
(Page, k) → PC
(Page, k) → PC
k→A
A∨k→A
A&k→A
A⊕k→A
k → A, [Top of Stack] → PC
k-A → A
k->R5(1:0)
k->R4(7:6)
k+A → A
STATUS
AFFECTED
None
None
None
None
None
Z
Z
Z
None
Z, C, DC
None
None
Z, C, DC
<Note1> This instruction is applicable to IOC50 ~ IOCF0, IOC61 ~ IOCE1
Product Specification (V1.2) 03.15.2005
(This specification is subject to change without further notice)
• 53
EM78P468N
8-BIT Microcontroller
4.13
Timing Diagram
AC Test Input/Output Waveform
2.4
2.0
0.8
TEST POINTS
2.0
0.8
0.4
AC Testing : Input is dr iven at 2.4V for logic "1",and 0.4V for logic "0".Tim ing m easur em ents are
m ade at 2.0V for logic "1",and 0.8V for logic "0".
RESET Timing (CLK="0")
NOP
Instruction 1
Executed
CLK
/RESET
Tdrh
TCC Input Timing (CLKS="0")
Tins
CLK
TCC
Ttcc
T trf
90%
Port (n+1)
10%
T trr
90%
10%
T i od
Port (n)
*n=0、2、4、6
54 •
Product Specification (V1.2) 03.15.2005
(This specification is subject to change without further notice)
EM78P468N
8-BIT Microcontroller
5
ABSOLUTE MAXIMUM RATINGS
Items
Supply voltage
Symbol
Condition
VDD
Rating
Unit
Min.
Max.
GND-0.3
+7.0
V
Input voltage
VI
PORT 5, PORT 6, PORT 7, PORT 8
GND-0.3
VDD+0.3
V
Output voltage
VO
PORT 5, PORT 6, PORT 7, PORT 8
GND-0.3
VDD+0.3
V
Operation temperature
TOPR
-40
85
℃
Storage temperature
TSTG
-65
150
℃
500
mW
10M
Hz
Power dissipation
PD
Operating Frequency
Product Specification (V1.2) 03.15.2005
(This specification is subject to change without further notice)
32.768K
• 55
EM78P468N
8-BIT Microcontroller
6
ELECTRICAL CHARACTERISTIC
6.1 DC Electrical Characteristics
(Ta= 25 °C, VDD= 5.0V, GND= 0V)
Symbol
FXT
Parameter
Condition
Min.
Typ.
32.768K
8M
Max. Unit
XTAL: VDD to 5V
Two cycle with two clocks
Sub-oscillator
Two cycle with two clocks
External R, internal C for
sub-oscillator
R: 300KΩ, internal capacitance
270
384
500
KHz
External R, internal C for
sub-oscillator
R: 2.2MΩ, internal capacitance
22.9
32.768
42.6
KHz
Input Leakage Current for
VIN = VDD, GND
input pins
-1
0
1
µA
VIH1
I Input High Threshold
Voltage
(Schmitt trigger)
Ports 5, 6, 7, 8
2.4
VIL1
Input High Threshold
Voltage (Schmitt trigger)
Ports 5, 6, 7, 8
VIHT1
Input High Threshold
Voltage (Schmitt trigger)
/RESET
VILT1
Input Low Threshold
Voltage (Schmitt trigger)
/RESET
VIHT2
Input High Threshold
Voltage (Schmitt trigger)
TCC, INT0, INT1
VILT2
Input Low Threshold
Voltage (Schmitt trigger)
TCC, INT0, INT1
IOH1
Output High Voltage
(Ports 5, 6, 7, 8)
VOH = 2.4V, IROCS=”0”
IOL1
Output Low Voltage
(Ports 5, 6, 7, 8)
VOL = 0.4V, IROCS=”0”
IOH1
Output high voltage
(P5.7/IROUT pin)
VOH = 2.4V, IROCS=”1”
IOL2
Output Low Voltage
(P5.7/IR OUT pin)
VOL = 0.4V, IROCS=”1
IPH
Pull-high current
Pull-high active, input pin at GND
-55
IPL
Pull-low current
Pull-low active, input pin at VDD
55
ISB
Sleep mode current
Fs
ERIC
IIL
ICC1
ICC2
10M
32.768
Hz
KHz
V
0.8
2.4
V
V
0.8
2.4
V
V
0.8
-10
V
mA
10
-20
mA
mA
20
mA
-75
-95
µA
75
95
µA
All input and I/O pins at VDD, output pin
floating, WDT disabled
0.5
1.5
µA
Idle mode current
/RESET= 'High', CPU OFF,
sub-oscillator clock (32.768KHz) ON,
output pin floating, LCD enable, no load
14
18
µA
Green mode current
/RESET= 'High', CPU ON, used
sub-oscillator clock (32.768KHz),
output pin floating, WDT enabled, LCD
enable
22
30
µA
ICC3
Normal mode
/RESET= 'High', Fosc=4MHz (Crystal
type, CLKS="0"), output pin floating
2.2
3
mA
ICC4
Normal mode
/RESET= 'High', Fosc=10MHz (Crystal
type, CLKS="0"), output pin floating
3.1
4
mA
56 •
Product Specification (V1.2) 03.15.2005
(This specification is subject to change without further notice)
EM78P468N
8-BIT Microcontroller
(Ta= 25 °C, VDD= 3.0V, GND= 0V)
Symbol
FXT
Parameter
Condition
Min.
Typ.
32.768K
8M
Max. Unit
XTAL: VDD to 5V
Two cycle with two clocks
Sub-oscillator
Two cycle with two clocks
External R, internal C for
sub-oscillator
R: 300KΩ, internal capacitance
270
384
500
KHz
External R, internal C for
sub-oscillator
R: 2.2MΩ, internal capacitance
22.9
32.768
42.6
KHz
Input Leakage Current for
input pins
VIN = VDD, GND
-1
0
1
µA
VIH1
Input High Threshold Voltage
(Schmitt trigger)
Ports 5, 6, 7, 8
1.8
VIL1
Input Low Threshold Voltage
(Schmitt trigger)
Ports 5, 6, 7, 8
VIHT1
Input High Threshold Voltage
(Schmitt trigger)
/RESET
VILT1
Input Low Threshold Voltage
(Schmitt trigger)
/RESET
VIHT2
Input High Threshold Voltage
(Schmitt trigger)
TCC, INT0, INT1
VILT2
Input Low Threshold Voltage
(Schmitt trigger)
TCC, INT0, INT1
IOH1
Output High Voltage
(Ports 5, 6, 7, 8)
VOH = 2.4V, IROCS=”0”
IOL1
Output Low Voltage
(Ports 5, 6, 7, 8)
VOL = 0.4V, IROCS=”0”
Fs
ERIC
IIL
IOH1
IOL2
Output high voltage
(P5.7/IROUT pin)
Output Low Voltage
(P5.7/IR OUT pin)
VOH = 2.4V, IROCS=”1
10M
32.768
Hz
KHz
V
0.6
1.8
V
V
0.6
1.8
V
V
0.6
-1.8
V
mA
6
-3.5
mA
mA
VOL = 0.4V, IROCS=”1
12
mA
IPH
Pull-high current
Pull-high active, input pin at GND
-16
-23
-30
µA
IPL
Pull-low current
Pull-low active, input pin at VDD
16
23
30
µA
ISB
Sleep mode current
All input and I/O pins at VDD, output
pin floating, WDT disabled
0.1
1
µA
Idle mode current
/RESET= 'High', CPU OFF,
sub-oscillator clock (32.768KHz) ON,
output pin floating, LCD enable, no
load
4
8
µA
ICC2
Green mode current
/RESET= 'High', CPU ON, used
sub-oscillator clock (32.768KHz),
output pin floating, WDT enabled,
LCD enable
10
20
µA
ICC3
Normal mode
/RESET= 'High', Fosc=4MHz
(Crystal type, CLKS="0"), output pin
floating
0.73
1.2
mA
ICC1
Product Specification (V1.2) 03.15.2005
(This specification is subject to change without further notice)
• 57
EM78P468N
8-BIT Microcontroller
6.2 AC Electrical Characteristics
(Ta=- 40°C ~ 85 °C, VDD=5V±5%, GND=0V)
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
45
50
55
%
Dclk
Input CLK duty cycle
Tins
Instruction cycle time
(CLKS="0")
Ttcc
TCC input period
Tdrh
Device reset hold time
Ta = 25°C
11.3
Trst
/RESET pulse width
Ta = 25°C
2000
Twdt
Watchdog timer period
Ta = 25°C
11.3
Tset
Input pin setup time
0
ns
Thold
Input pin hold time
20
ns
Tdelay
Output pin delay time
50
ns
Crystal type
100
DC
ns
RC type
500
DC
ns
(Tins+20)/N*
Cload=20pF
ns
16.2
21.6
ms
ns
16.2
21.6
ms
* N= selected pre-scaler ratio.
58 •
Product Specification (V1.2) 03.15.2005
(This specification is subject to change without further notice)
EM78P468N
8-BIT Microcontroller
6.3 Device Characteristic
The graphs provided in the following pages were derived based on a limited number of
samples and are shown here for reference only. The device characteristic illustrated
herein are not guaranteed for it accuracy. In some graphs, the data maybe out of the
specified warranted operating range.
Vih/Vil (/RESET pins with schmitt inverter)
2.5
Vih Max. (-40℃ to +85℃)
Vih Typ. (+25℃)
Vih Min. (-40℃ to +85℃)
Vih/Vil (Volt)
2
1.5
1
Vil Max. (-40℃ to +85℃)
Vil Typ. (+25℃)
0.5
Vil Min. (-40℃ to +85℃)
0
2
2.5
3
3.5
4
4.5
5
5.5
Vdd (Volt)
Fig. 28 Vih, Vil of /RESET Pin vs. VDD
Vih/Vil (Port 5, Port 6 All Input pins with schmitt trigger)
2.5
Vih Max. (-40℃ to +85℃)
Vih Vil (Volt)
2
Vih Typ. (+25℃)
Vih Min. (-40℃ to +85℃)
1.5
1
Vil Max. (-40℃ to +85℃)
0.5
Vil Typ. (+25℃)
Vil Min. (-40℃ to +85℃)
0
2
2.5
3
3.5
4
4.5
5
5.5
Vdd (Volt)
Fig. 29 Vih, Vil of PORT 5 and PORT 6 vs. VDD
Product Specification (V1.2) 03.15.2005
(This specification is subject to change without further notice)
• 59
EM78P468N
8-BIT Microcontroller
Vih/Vil (Port 7, Port 8 All Input pins with schmitt inverter)
2.5
Vih Max. (-40℃ to +85℃)
Vih Typ. (+25℃)
2
Vih Vil (Volt)
Vih Min. (-40℃ to +85℃)
1.5
1
Vil Max. (-40℃ to +85℃)
Vil Typ. (+25℃)
0.5
Vil Min. (-40℃ to +85℃)
0
2
2.5
3
3.5
4
4.5
5
5.5
Vdd (Volt)
Fig. 30 Vih, Vil of PORT 7 and PORT 8 vs. VDD
P5.7 Voh/Ioh (VDD=3V, IROCS="0")
P5.7 Voh/Ioh (VDD=5V, IROCS="0")
0
0
-5
-2
-10
-4
Min : +85℃
Ioh (mA)
Ioh (mA)
Min : +85℃
Typ : +25℃
-15
Typ : +25℃
-6
Max : -40℃
Max : -40℃
-8
-20
-10
-25
0
1
2
3
Voh (Volt)
4
5
0
0.5
1
1.5
2
2.5
3
Voh (Volt)
Fig. 31 Port 5.7 Voh vs. Ioh, [ VDD=3V, 5V, IROCS (Bit 7 of IOC61) =” 0 ” ]
60 •
Product Specification (V1.2) 03.15.2005
(This specification is subject to change without further notice)
EM78P468N
8-BIT Microcontroller
P5.7 Voh/Ioh (VDD=5V, IROCS="1")
P5.7 Voh/Ioh (VDD=3V, IROCS="1")
0
0
-2
-10
-4
-30
Min : +85℃
Min : +85℃
Ioh (mA)
Ioh (mA)
-6
-20
Typ : +25℃
-8
Typ : +25℃
-10
-12
-40
Max : -40℃
-14
Max : -40℃
-16
-18
-50
0
1
2
3
4
0
5
0.5
1
1.5
2
2.5
3
Voh (Volt)
Voh (Volt)
P5.4~6, PORT 6~8 Voh/Ioh (VDD=5V)
P5.4~6, PORT 6~8 Voh/Ioh (VDD=3V)
0
0
-5
-2
-10 Min : +85
℃
-15
-20
Ioh (mA)
Ioh (mA)
Fig. 32 Port 5.7 Voh vs. Ioh, [ VDD=3V, 5V, IROCS (Bit 7 of IOC61) =” 1 ” ]
Typ : +25℃
-4
Min : +85℃
Typ : +25℃
-6
Max : -40℃
Max : -40℃
-8
-10
-25
0
1
2
3
4
5
Voh (Volt)
0
0.5
1
1.5
2
2.5
3
Voh (Volt)
Fig. 33 Port 6, Port 7 and Port 8 Voh vs. Ioh [ VDD=3V, 5V ]
Product Specification (V1.2) 03.15.2005
(This specification is subject to change without further notice)
• 61
EM78P468N
8-BIT Microcontroller
80
P5.7 Voh/Ioh (VDD=5V, IROCS="0")
P5.7 Voh/Ioh (VDD=3V, IROCS="0")
35
Max : -40℃
Max : -40℃
70
30
60
Typ : +25℃
Typ : +25℃
25
40
Ioh (mA)
Ioh (mA)
50
Min : +85℃
20
15
Min : +85℃
30
10
20
5
10
0
0
0
1
2
3
4
0
5
0.5
1
1.5
2
2.5
3
Voh (Volt)
Voh (Volt)
Fig. 34 Port 5.7 Vol vs. Iol, [ VDD=3V, 5V, IROCS (Bit 7 of IOC61) =” 0 ” ]
P5.7 Voh/Ioh (VDD=3V, IROCS="1")
P5.7 Voh/Ioh (VDD=5V, IROCS="1")
70
160
Max : -40℃
Max : -40℃
140
60
Typ : +25℃
120
50
Typ : +25℃
80
Ioh (mA)
Ioh (mA)
100
Min : +85℃
40
30
Min : +85℃
60
20
40
10
20
0
0
0
1
2
3
Voh (Volt)
4
5
0
0.5
1
1.5
2
2.5
3
Voh (Volt)
Fig. 35 Port 5.7 Vol vs. Iol, [ VDD=3V, 5V, IROCS (Bit 7 of IOC61) =” 1 ” ]
62 •
Product Specification (V1.2) 03.15.2005
(This specification is subject to change without further notice)
EM78P468N
8-BIT Microcontroller
P5.4~5.6, PORT 6, 7, 8 Voh/Ioh (VDD=3V)
P5.4~5.6, PORT 6, 7, 8 Voh/Ioh (VDD=5V)
40
90
Max : -40℃
80
Max : -40℃
35
70
30
Typ : +25℃
60
Typ : +25℃
Ioh (mA)
Ioh (mA)
25
50
40
Min : +85℃
20
15
Min : +85℃
30
10
20
5
10
0
0
0
1
2
3
4
5
0
0.5
Voh (Volt)
1
1.5
2
2.5
3
Voh (Volt)
Fig. 36 Port 6, Port 7 and Port 8 Vol vs. Iol [ VDD=3V, 5V ]
Setup time from Power ON Reset
35
30
setup time (mS)
25
20
15
10
5
0
2
3
4
5
6
VDD (Volt)
Fig. 37 WDT time out period vs. VDD, pre-scaler set to 1:1
Product Specification (V1.2) 03.15.2005
(This specification is subject to change without further notice)
• 63
EM78P468N
8-BIT Microcontroller
Typical RC OSC Frequency (R-OSCI Pin)
2.4
35
2.1
Typical RC OSC Frequency (Xin Pin)
R = 51 K
34
Frequency (K Hz)
Frequency (M Hz)
1.8
1.5
1.2
R = 100 K
0.9
33
R = 2.2 M
32
0.6
31
0.3
R = 300 K
30
0
2
2.5
3
3.5
4
VDD (Volt)
4.5
5
5.5
2
2.5
3
3.5
4
4.5
5
5.5
VDD (Volt)
Fig. 38 Typical ERIC OSC Frequency vs. VDD (Temperature at 25℃)
Fig. 39 Typical ERIC OSC Frequency vs. Temperature (R-OSCI Pin)
64 •
Product Specification (V1.2) 03.15.2005
(This specification is subject to change without further notice)
EM78P468N
8-BIT Microcontroller
Fig. 40 Typical ERIC OSC Frequency vs. Temperature (Xin Pin)
Four conditions exist with the Operating Current ICC1 to ICC4. These conditions are as
follows:
ISB (sleep mode): Fm and Fs is stop, all function off.
ICC1 (idle mode): Fm Stop and Fs=32K Hz, 2 clocks, CPU off, LCD enable and WDT
Enable.
ICC2 (green mode): Fm Stop and Fs=32K Hz, 2 clocks, CPU running on Fs frequency,
LCD enable and WDT Enable
ICC3 (normal mode): Fm=4M Hz and Fs=32K Hz, 2 clocks, CPU running on Fm
frequency, LCD enable and WDT Enable
Product Specification (V1.2) 03.15.2005
(This specification is subject to change without further notice)
• 65
EM78P468N
8-BIT Microcontroller
Typical ICC3 vs. Temerature
2
1.6
Current (mA)
VDD=5V
1.2
0.8
VDD=3V
0.4
0
-40
-20
0
25
50
70
85
Temperature (℃ )
Fig. 40 Typical power consumption on normal mode operation (Fm=4MHz)
Maximum ICC3 vs. Temerature
2.8
2.4
VDD=5V
Current (mA)
2
1.6
1.2
0.8
VDD=3V
0.4
0
-40
-20
0
25
50
70
85
Temperature (℃ )
Fig. 41 Maximum power consumption on normal mode operation (Fm=4MHz)
66 •
Product Specification (V1.2) 03.15.2005
(This specification is subject to change without further notice)
EM78P468N
8-BIT Microcontroller
Typical ICC2 vs. Temerature
30
25
Current (uA)
VDD=5V
20
15
10
VDD=3V
5
0
-40
-20
0
25
50
70
85
Temperature (℃ )
Fig. 42 Typical power consumption on green mode operation
Maximum ICC2 vs. Temerature
35
30
Current (uA)
25
VDD=5V
20
15
10
VDD=3V
5
0
-40
-20
0
25
50
70
85
Temperature (℃ )
Fig. 43 Maximum power consumption on green mode operation
Product Specification (V1.2) 03.15.2005
(This specification is subject to change without further notice)
• 67
EM78P468N
8-BIT Microcontroller
Typical ICC1 vs. Temerature
20
Current (uA)
15
VDD=5V
10
5
VDD=3V
0
-40
-20
0
25
50
70
85
Temperature (℃ )
Fig. 44 Typical power consumption on idle mode operation
Maximum ICC1 vs. Temerature
25
Current (uA)
20
VDD=5V
15
10
VDD=3V
5
0
-40
-20
0
25
50
70
85
Temperature (℃ )
Fig. 45 Maximum power consumption on idle mode operation
68 •
Product Specification (V1.2) 03.15.2005
(This specification is subject to change without further notice)
EM78P468N
8-BIT Microcontroller
Typical ISB vs. Temerature
1
Current (uA)
0.8
VDD=5V
0.6
0.4
0.2
VDD=3V
0
-40
-20
0
25
50
70
85
Temperature (℃ )
Fig. 46 Typical power consumption on sleep mode operation
Maximun ISB vs. Temerature
1.2
Current (uA)
0.9
VDD=5V
0.6
0.3
VDD=3V
0
-40
-20
0
25
50
70
85
Temperature (℃ )
Fig. 47 Maximum power consumption on sleep mode operation
Product Specification (V1.2) 03.15.2005
(This specification is subject to change without further notice)
• 69
EM78P468N
8-BIT Microcontroller
Fig. 48 Operating voltage under temperature range of 0℃ to 70℃
Fig. 49 Operating voltage under temperature range of -40℃ to +85℃
70 •
Product Specification (V1.2) 03.15.2005
(This specification is subject to change without further notice)
EM78P468N
8-BIT Microcontroller
7
APPLICATION CIRCUIT
EM78P468N
COM0
|
COM3
LCD PANEL
VDD
SEG0
|
SEG31
IROUT
P6.7
P6.6
P6.5
P6.4
P6.3
1
2
3
4
P6.2
5
6
7
8
P6.1
9
A
B
C
P6.0
D
E
F
G
Fig. 50 IROUT control external BJT circuit to drive infrared emitting diodes
EM78P468N
COM0
|
COM3
LCD PANEL
VDD
SEG0
|
SEG31
IROUT
P6.7
P6.6
P6.5
P6.4
P6.3
1
2
3
4
P6.2
5
6
7
8
P6.1
9
A
B
C
P6.0
D
E
F
G
Fig. 51 IROUT direct drive infrared emitting diodes
Product Specification (V1.2) 03.15.2005
(This specification is subject to change without further notice)
• 71
EM78P468N
8-BIT Microcontroller
APPENDIX A:
A.1 Package Types:
Name
Package Type
Pin Count
Package Body Size
EM78P468NH
Dice
59
EM78P468NQ
QFP
64
14 mm * 20 mm
EM78P468NAQ
LQFP
64
7 mm * 7 mm
EM78P468NBQ
LQFP
44
10 mm * 10 mm
EM78P468NCQ
QFP
44
10 mm * 10 mm
A.2 Package Information:
QFP – 64
A1
Symbal
A
A1
A2
D
D1
E
E1
θ
c
L
L1
b
e
Min
Normal
Max
3.40
一
一
一
2.72
3.05
25.00 BASIC
20.00 BASIC
19.00 BASIC
14.00 BASIC
0°
7°
3. 5
0.11
0.15
0.23
1.15
1.3
1.45
2.50 REF
0.35
0.50
0. 4
1.00 BSC
一
0.25
2.55
TITLE:
QFP-64 L(14*20 MM) FOOTPRINT 5.0mm
PACKAGE OUTLINE DIMENSION
File :
QFP 64L
Edtion: A
Unit : mm
Scale: Free
Material:
Sheet:1 of 1
72 •
Product Specification (V1.2) 03.15.2005
(This specification is subject to change without further notice)
EM78P468N
8-BIT Microcontroller
LQFP – 64
DETAIL " A "
D
D1
E
L
E1
L1
64
1
e
Symbal
A
A1
A2
D
D1
E
E1
e
c
c1
b
b1
L
L1
Min
0.05
1.35
8.90
6.90
8.90
6.900
θ
0°
Normal
1.40
9.00
7.00
9.00
7.00
0.4 BSC
0.18
0.16
0.60
1.00 REF.
3.5°
0.09
0.09
0.13
0.13
0.45
Max
1.60
0.15
1.45
9.10
7.10
9.10
7.100
0.20
0.16
0.23
0.19
0.75
7°
A2
A
b
TITLE:
LQFP 64L ( 7*7 MM ) FOOTPRINT 2.0 mm
PACKAGE OUTLINE DIMENSION
A1
File :
DETAIL " B "
c1
Edtion: A
LQFP 64L
Unit : mm
c
Scale: Free
b
Material:
b1
Sheet:1 of 1
LQFP – 44
c
Min
Symbal
A
A1
A2
b
c
E1
E
L
L1
e
Normal
0.050
1.350
0.300
0.090
1.400
0.370
0
3.5
Max
1.600
0.150
1.450
0.450
0.200
12.00 BASIC
10.00 BASIC
0.450
0.600
0.750
1.0(BASIC)
0.8(BASIC)
θ
7
TITLE:
LQFP-44L(10*10 MM) FOOTPRINT 2.0mm
PACKAGE OUTLINE DIMENSION
File :
LQFP44
Edtion: A
Unit : mm
Scale: Free
Material:
Sheet:1 of 1
Product Specification (V1.2) 03.15.2005
(This specification is subject to change without further notice)
• 73
EM78P468N
8-BIT Microcontroller
QFP – 44
c
Min
Symbal
A
A1
A2
b
c
E1
E
L
L1
e
0.15
1.80
13.00
9.90
0.73
1.50
θ
Normal
2.00
0.30(TYP)
0.15(TYP)
13.20
10.00
0.88
1.60
0.80(TYP)
Max
2.70
0.50
2.20
13.40
10.10
1.03
1.70
0
7
TITLE:
QFP-44L(10*10 MM) FOOTPRINT 3.2mm
PACKAGE OUTLINE DIMENSION
File :
QFP44
Edtion: A
Unit : mm
Scale: Free
Material:
Sheet:1 of 1
74 •
Product Specification (V1.2) 03.15.2005
(This specification is subject to change without further notice)
EM78P468N
8-BIT Microcontroller
APPENDIX B: EM78P468N Program Pin List
It uses DWRT to program EM78P468N IC’s. The connector of DWTR select by CON4
(EM78P451), and the software is selected by EM78P468N.
Program Pin Name
IC Pin Name
L/QFP-64
Pin Number
L/QFP-44
Pin Number
VPP
/RESET
25
14
ACLK
P54/INT0
32
21
DINCLK
P55/INT1
33
22
DATAIN
P56/TCC
34
23
/PGMB
P60
38
25
/OEB
P61
39
26
VDD
VDD
29
18
GND
GND
26
15
Wiring diagram is for ELAN DWTR
Product Specification (V1.2) 03.15.2005
(This specification is subject to change without further notice)
• 75
EM78P468N
8-BIT Microcontroller
APPENDIX C:
C.1 ICE 468XA Oscillator circuit (JP 5)
Mode1:
Main oscillator: Crystal mode, Sub oscillator: Crystal mode
Crystal
GND
Xin
Xout
GND
VDD
Xin
Suboscillator
GND
R-OSCI
OSCO
GND
VDD
R-OSCI
Mainoscillator
JP 5
Crystal
Mode2:
Main oscillator: PLL mode, Sub oscillator: Crystal mode
Crystal
GND
Xin
Xout
GND
VDD
Xin
Suboscillator
GND
R-OSCI
OSCO
GND
VDD
R-OSCI
Mainoscillator
JP 5
PLL
Mode3:
Main oscillator: RC mode, Sub oscillator: Crystal
Crystal
GND
Xin
Xout
GND
VDD
Xin
Suboscillator
GND
R-OSCI
OSCO
GND
VDD
R-OSCI
Mainoscillator
JP 5
RC
76 •
Product Specification (V1.2) 03.15.2005
(This specification is subject to change without further notice)
EM78P468N
8-BIT Microcontroller
Mode4:
Main oscillator: Crystal mode, Sub oscillator: RC mode
RC
GND
Xin
Xout
GND
VDD
Xin
Suboscillator
GND
R-OSCI
OSCO
GND
VDD
R-OSCI
Mainoscillator
JP 5
Crystal
Mode5:
Main oscillator: PLL mode, Sub oscillator: RC mode
RC
GND
Xin
Xout
GND
VDD
Xin
Suboscillator
GND
R-OSCI
OSCO
GND
VDD
R-OSCI
Mainoscillator
JP 5
PLL
Mode6:
Main oscillator: RC mode, Sub oscillator: RC mode
RC
GND
Xin
Xout
GND
VDD
Xin
Suboscillator
GND
R-OSCI
OSCO
GND
VDD
R-OSCI
Mainoscillator
JP 5
RC
Product Specification (V1.2) 03.15.2005
(This specification is subject to change without further notice)
• 77
78 •
VB
COM0
COM2
SEG0
SEG2
SEG4
SEG6
SEG8
SEG10
SEG12
SEG14
SEG16/P7.0
SEG18/P7.2
SEG20/P7.4
SEG22/P7.6
SEG24/P8.0
SEG26/P8.2
SEG28/P8.4
SEG30/P8.6
P6.7
P6.5
P6.3
P6.1
P5.7/IROUT
P5.5/INT1
Xout
VDD
R-OSCI
/RESET
VLCD2
VA
COM1
COM3
SEG1
SEG3
SEG5
SEG7
SEG9
SEG11
SEG13
SEG15
SEG17/P7.1
SEG19/P7.3
SEG21/P7.5
SEG23/P7.7
SEG25/P8.1
SEG27/P8.3
SEG29/P8.5
SEG31/P8.7
P6.6
P6.4
P6.2
P6.0
P5.6/TCC
P5.4/INT0
Xin
OSCO
GND
VLCD3
EM78P468N
8-BIT Microcontroller
C.2 ICE 468XA output pin assignment (JP 3)
JP 3
2
4
6
8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60
1
3
5
7
9 11 13 15 17 19 21 23 25 27 29 31 33 35 37 39 41 43 45 47 49 51 53 55 57 59
T
(This specification is subject to change without further notice)
Product Specification (V1.2) 03.15.2005