Hitachi Single-Chip Microcomputer
H8/3672 Series
H8/3672F-ZTATTM
HD64F3672
H8/3670F-ZTATTM
HD64F3670
Hardware Manual
ADE-602-239
Rev. 1.0
03/20/01
Hitachi, Ltd.
Rev. 2.0, 03/01, page ii of xxiv
Cautions
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have received the latest product standards or specifications before final design, purchase or
use.
3. Hitachi makes every attempt to ensure that its products are of high quality and reliability.
However, contact Hitachi’s sales office before using the product in an application that
demands especially high quality and reliability or where its failure or malfunction may directly
threaten human life or cause risk of bodily injury, such as aerospace, aeronautics, nuclear
power, combustion control, transportation, traffic, safety equipment or medical equipment for
life support.
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particularly for maximum rating, operating supply voltage range, heat radiation characteristics,
installation conditions and other characteristics. Hitachi bears no responsibility for failure or
damage when used beyond the guaranteed ranges. Even within the guaranteed ranges,
consider normally foreseeable failure rates or failure modes in semiconductor devices and
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Rev. 2.0, 03/01, Page iii of xxiv
Rev. 2.0, 03/01, page iv of xxiv
Preface
This LSI is a single-chip microprocessor made up of the high-speed H8/300H CPU as its core, and
the peripheral functions required to configure a system. The H8/300H CPU has an instruction set
that is compatible with the H8/300 CPU
This LSI is equipped with ROM, RAM, an 8-bit timer (TMR), a 16-bit timer, a watchdog timer
(WDT), two types of serial communication interfaces (SCIs), a 10-bit A/D converter, and I/O
ports as on-chip peripheral modules. This LSI is suitable for use as an embedded processor for
TM
high-level control systems. Its on-chip ROM is flash memory (F-ZTAT *) that provides
flexibility as it can be reprogrammed in no time to cope with all situations from the early stages of
mass production to full-scale mass production. This is particularly applicable to application
devices with specifications that will most probably change.
Note: * F-ZTAT
TM
is a trademark of Hitachi, Ltd.
Target Users: This manual was written for users who will be using the H8/3672 Series in the
design of application systems. Members of this audience are expected to
understand the fundamentals of electrical circuits, logical circuits, and
microcomputers.
Objective:
This manual was written to explain the hardware functions and electrical
characteristics of the H8/3672 Series to the above audience.
Refer to the H8/300H Series Programming Manual for a detailed description of the
instruction set.
Notes on reading this manual:
In order to understand the overall functions of the chip
Read the manual according to the contents. This manual can be roughly categorized into parts
on the CPU, system control functions, peripheral functions and electrical characteristics.
In order to understand the details of the CPU's functions
Read the H8/300 Series Programming Manual.
In order to understand the details of a register when its name is known
Read the index that is the final part of the manual to find the page number of the entry on the
register. The addresses, bits, and initial values of the registers are summarized in Appendix A,
On-Chip I/O Registers.
Examples:
Register name:
The following notation is used for cases when the same or a
similar function, e.g. serial communication, is implemented
on more than one channel:
XXX_N (XXX is the register name and N is the channel
number)
Bit order:
The MSB is on the left and the LSB is on the right.
Rev. 2.0, 03/01, Page v of xxiv
Related Manuals:
The latest versions of all related manuals are available from our web site.
Please ensure you have the latest versions of all documents you require.
http://www.hitachi.co.jp/Sicd/English/Products/micome.htm
H8/3672 Series manuals:
Manual Title
ADE No.
H8/3672 Series Hardware Manual
This manual
H8/300H Series Programming Manual
ADE-602-053
Users manuals for development tools:
Manual Title
ADE No.
C/C++ Compiler, Assembler, Optimized Linkage Editor User's Manual
ADE-702-246
Hitachi Debugging Interface User's Manual
ADE-702-212
Hitachi Embedded Workshop User's Manual
ADE-702-201
Hitachi Embedded Workshop, Hitachi Debugging Interface Tutorial
ADE-702-231
F-ZTAT Microcomputer On-Board Writing Program User's Manual
ADE-702-227
Application Notes:
Manual Title
ADE No.
C/C++ Compiler Guide
ADE-502-044
F-ZTAT Technical Q & A
ADE-502-046
Rev. 2.0, 03/01, page vi of xxiv
Contents
Section 1 Overview....................................................................................................................1
1.1 Overview...........................................................................................................................1
1.2 Internal Block Diagram.....................................................................................................2
1.3 Pin Arrangement ...............................................................................................................3
1.4 Pin Functions ....................................................................................................................5
Section 2 CPU................................................................................................... 7
2.1
2.2
2.3
2.4
2.5
2.6
2.7
2.8
Address Space and Memory Map .....................................................................................8
Register Configuration ...................................................................................................... 9
2.2.1 General Registers .....................................................................................................10
2.2.2 Program Counter (PC) .............................................................................................11
2.2.3 Condition-Code Register (CCR) .............................................................................. 11
Data Formats .....................................................................................................................13
2.3.1 General Register Data Formats ................................................................................13
2.3.2 Memory Data Formats .............................................................................................15
Instruction Set ...................................................................................................................16
2.4.1 Table of Instructions Classified by Function ...........................................................16
2.4.2 Basic Instruction Formats ........................................................................................25
Addressing Modes and Effective Address Calculation .....................................................27
2.5.1 Addressing Modes ...................................................................................................27
2.5.2 Effective Address Calculation .................................................................................29
Basic Bus Cycle ................................................................................................................32
2.6.1 Access to On-Chip Memory (RAM, ROM).............................................................32
2.6.2 On-Chip Peripheral Modules ...................................................................................33
CPU States ........................................................................................................................34
Usage Notes ......................................................................................................................35
2.8.1 Notes on Data Access to Empty Areas ....................................................................35
2.8.2 EEPMOV Instruction...............................................................................................35
2.8.3 Bit Manipulation Instruction....................................................................................35
Section 3 Exception Handling .......................................................................... 41
3.1
3.2
3.3
3.4
Exception Sources and Vector Address ............................................................................41
Register Descriptions ........................................................................................................43
3.2.1 Interrupt Edge Select Register 1(IEGR1) ................................................................43
3.2.2 Interrupt Edge Select Register 2(IEGR2) ................................................................44
3.2.3 Interrupt Enable Register 1(IENR1) ........................................................................45
3.2.4 Interrupt Flag Register 1(IRR1) ...............................................................................46
3.2.5 Wakeup Interrupt Flag Register(IWPR) ..................................................................47
Reset .................................................................................................................................48
Interrupt Exception Handling............................................................................................48
Rev. 2.0, 03/01, Page vii of xxiv
3.5
3.4.1 External Interrupts ................................................................................................... 48
3.4.2 Internal Interrupts .................................................................................................... 49
3.4.3 Interrupt Handling Sequence ................................................................................... 49
3.4.4 Interrupt Response Time.......................................................................................... 51
Usage Notes ...................................................................................................................... 53
3.5.1 Interrupts after Reset................................................................................................ 53
3.5.2 Notes on Stack Area Use ......................................................................................... 53
3.5.3 Notes on Rewriting Port Mode Registers ................................................................ 53
Section 4 Address Break....................................................................................55
4.1
4.2
Register Descriptions ........................................................................................................ 55
4.1.1 Address Break Control Register(ABRKCR) ........................................................... 56
4.1.2 Address Break Status Register(ABRKSR) .............................................................. 57
4.1.3 Break Address Registers (BARH, BARL)............................................................... 57
4.1.4 Break Data Registers (BDRH, BDRL) .................................................................... 58
Operation .......................................................................................................................... 58
Section 5 Clock Pulse Generators .....................................................................61
5.1
5.2
5.3
System Clock Generator ................................................................................................... 61
5.1.1 Connecting a Crystal Oscillator ............................................................................... 61
5.1.2 Connecting a Ceramic Oscillator ............................................................................. 62
5.1.3 External Clock Input Method................................................................................... 62
Prescalers .......................................................................................................................... 63
5.2.1 Prescaler S ............................................................................................................... 63
Usage Notes ...................................................................................................................... 63
5.3.1 Note on Oscillators .................................................................................................. 63
5.3.2 Notes on Board Design ............................................................................................ 64
Section 6 Power-down Modes...........................................................................65
6.1
6.2
6.3
6.4
6.5
Register Descriptions ........................................................................................................ 65
6.1.1 System Control Register 1(SYSCR1) ...................................................................... 65
6.1.2 System Control Register 2(SYSCR2) ...................................................................... 66
6.1.3 Module Standby Control Register 1(MSTCR1) ...................................................... 67
6.1.4 Module Standby Control Register 2(MSTCR2) ...................................................... 68
Mode Transitions and States of the LSI ............................................................................ 69
6.2.1 Sleep Mode .............................................................................................................. 71
6.2.2 Standby Mode.......................................................................................................... 71
6.2.3 Subsleep Mode......................................................................................................... 71
Operating Frequency in the Active Mode ......................................................................... 72
Direct Transition ............................................................................................................... 72
Module Standby Function................................................................................................. 72
Section 7 ROM ..................................................................................................73
Rev. 2.0, 03/01, page viii of xxiv
7.1
7.2
7.3
7.4
7.5
Block Configuration..........................................................................................................73
Register Descriptions ........................................................................................................74
7.2.1 Flash Memory Control Register 1 (FLMCR1).........................................................75
7.2.2 Flash Memory Control Register 2 (FLMCR2).........................................................76
7.2.3 Erase Block Register 1 (EBR1) ...............................................................................76
7.2.4 Flash Memory Enable Register(FENR) ...................................................................77
On-Board Programming Modes........................................................................................77
7.3.1 Boot Mode ...............................................................................................................78
7.3.2 Programming/Erasing in User Program Mode.........................................................80
Flash Memory Programming/Erasing ...............................................................................81
7.4.1 Program/Program-Verify .........................................................................................81
7.4.2 Erase/Erase-Verify...................................................................................................84
7.4.3 Interrupt Handling when Programming/Erasing Flash Memory..............................84
Program/Erase Protection .................................................................................................86
7.5.1 Hardware Protection ................................................................................................86
7.5.2 Software Protection..................................................................................................86
7.5.3 Error Protection........................................................................................................86
Section 8 RAM ................................................................................................. 87
Section 9 I/O Ports ............................................................................................ 89
9.1
9.2
9.3
9.4
9.5
Port 1.................................................................................................................................89
9.1.1 Port Mode Register 1(PMR1) ..................................................................................90
9.1.2 Port Control Register 1(PCR1) ................................................................................91
9.1.3 Port Data Register 1(PDR1).....................................................................................91
9.1.4 Port Pull-Up Control Register 1(PUCR1)................................................................92
9.1.5 Pin Functions ...........................................................................................................92
Port 2.................................................................................................................................94
9.2.1 Port Control Register 2(PCR2) ................................................................................94
9.2.2 Port Data Register 2(PDR2).....................................................................................95
9.2.3 Pin Functions ...........................................................................................................95
Port 5.................................................................................................................................96
9.3.1 Port Mode Register 5(PMR5) ..................................................................................97
9.3.2 Port Control Register 5(PCR5) ................................................................................98
9.3.3 Port Data Register 5(PDR5).....................................................................................98
9.3.4 Port Pull-up Control Register 5(PUCR5).................................................................99
9.3.5 Pin Functions ...........................................................................................................99
Port 7.................................................................................................................................101
9.4.1 Port Control Register 7(PCR7) ................................................................................102
9.4.2 Port Data Register 7(PDR7).....................................................................................102
9.4.3 Pin Functions ...........................................................................................................103
Port 8.................................................................................................................................104
9.5.1 Port Control Register 8(PCR8) ................................................................................104
Rev. 2.0, 03/01, Page ix of xxiv
9.6
9.5.2 Port Data Register 8(PDR8)..................................................................................... 105
9.5.3 Pin Functions ........................................................................................................... 105
Port B ................................................................................................................................ 107
9.6.1 Port Data Register B(PDRB) ................................................................................... 108
Section 10 Timer V............................................................................................109
10.1 Features............................................................................................................................. 109
10.2 Input/Output Pins .............................................................................................................. 110
10.3 Register Descriptions ........................................................................................................ 111
10.3.1 Timer Counter V (TCNTV) ................................................................................. 111
10.3.2 Time Constant Registers A and B (TCORA, TCORB)........................................ 111
10.3.3 Timer Control Register V0(TCRV0) ................................................................... 112
10.3.4 Timer Control/Status Register V(TCSRV) .......................................................... 114
10.3.5 Timer Control Register V1(TCRV1) ................................................................... 115
10.4 Operation .......................................................................................................................... 115
10.4.1 Timer V operation................................................................................................ 115
10.5 Timer V application examples .......................................................................................... 119
10.5.1 Pulse Output with Arbitrary Duty Cycle.............................................................. 119
10.5.2 Pulse Output with Arbitrary Pulse Width and Delay from TRGV Input ............. 120
10.6 Usage Notes ...................................................................................................................... 121
Section 11 Timer W...........................................................................................123
11.1 Features............................................................................................................................. 123
11.2 Input/Output Pins .............................................................................................................. 125
11.3 Register Descriptions ........................................................................................................ 126
11.3.1 Timer Mode Register W(TMRW) ....................................................................... 126
11.3.2 Timer Control Register W(TCRW) ..................................................................... 128
11.3.3 Timer Interrupt Enable Register W(TIERW)....................................................... 129
11.3.4 Timer Status Register W(TSRW) ........................................................................ 129
11.3.5 Timer I/O Control Register 0(TIOR0) ................................................................. 131
11.3.6 Timer I/O Control Register 1(TIOR1) ................................................................. 132
11.3.7 Timer Counter (TCNT)........................................................................................ 133
11.3.8 General Registers A to D (GRA to GRD)............................................................ 133
11.4 Operation .......................................................................................................................... 134
11.4.1 Normal Operation ................................................................................................ 134
11.4.2 PWM Operation ................................................................................................... 138
11.5 Operation Timing.............................................................................................................. 142
11.5.1 TCNT Count Timing ........................................................................................... 142
11.5.2 Output Compare Timing ...................................................................................... 142
11.5.3 Input Capture Timing........................................................................................... 143
11.5.4 Timing of Counter Clearing by Compare Match ................................................. 144
11.5.5 Buffer Operation Timing ..................................................................................... 144
11.5.6 Timing of IMFA to IMFD Flag Setting at Compare Match ................................ 145
Rev. 2.0, 03/01, page x of xxiv
11.5.7 Timing of IMFA to IMFD Setting at Input Capture ............................................146
11.6 Usage Notes ......................................................................................................................147
Section 12 Watchdog Timer ............................................................................. 149
12.1 Features .............................................................................................................................149
12.2 Register Descriptions ........................................................................................................149
12.2.1 Timer Control/Status Register WD(TCSRWD)...................................................150
12.2.2 Timer Counter WD(TCWD) ................................................................................151
12.2.3 Timer Mode Register WD(TMWD) ....................................................................151
12.3 Operation...........................................................................................................................152
Section 13 Serial Communication Interface3 (SCI3) ....................................... 153
13.1 Features .............................................................................................................................153
13.2 Input/Output Pins ..............................................................................................................155
13.3 Register Descriptions ........................................................................................................155
13.3.1 Receive Shift Register (RSR)...............................................................................156
13.3.2 Receive Data Register (RDR) ..............................................................................156
13.3.3 Transmit Shift Register (TSR) .............................................................................156
13.3.4 Transmit Data Register (TDR).............................................................................156
13.3.5 Serial Mode Register (SMR)................................................................................157
13.3.6 Serial Control Register 3 (SCR3).........................................................................158
13.3.7 Serial Status Register (SSR).................................................................................160
13.3.8 Bit Rate Register (BRR) ......................................................................................162
13.4 Operation in Asynchronous Mode ....................................................................................167
13.4.1 Clock.................................................................................................................... 168
13.4.2 SCI3 Initialization ................................................................................................169
13.4.3 Data Transmission ...............................................................................................170
13.4.4 Serial Data Reception...........................................................................................172
13.5 Operation in Clocked Synchronous Mode ........................................................................176
13.5.1 Clock.................................................................................................................... 176
13.5.2 SCI3 Initialization ................................................................................................176
13.5.3 Serial Data Transmission .....................................................................................177
13.5.4 Serial Data Reception (Clocked Synchronous Mode)..........................................179
13.5.5 Simultaneous Serial Data Transmission and Reception.......................................181
13.6 Multiprocessor Communication Function.........................................................................183
13.6.1 Multiprocessor Serial Data Transmission ............................................................185
13.6.2 Multiprocessor Serial Data Reception .................................................................186
13.7 Interrupts ...........................................................................................................................190
13.8 Usage Notes ......................................................................................................................191
13.8.1 Break Detection and Processing ..........................................................................191
13.8.2 Mark State and Break Detection ..........................................................................191
13.8.3 Receive Error Flags and Transmit Operations (Clocked Synchronous Mode Only)
191
Rev. 2.0, 03/01, Page xi of xxiv
13.8.4 Receive Data Sampling Timing and Reception Margin in Asynchronous Mode 192
Section 14 A/D Converter .................................................................................193
14.1 Features............................................................................................................................. 193
14.2 Input/Output Pins .............................................................................................................. 195
14.3 Register Description.......................................................................................................... 196
14.3.1 A/D Data Registers A to D (ADDRA to ADDRD) ............................................. 196
14.3.2 A/D Control/Status Register (ADCSR) ............................................................... 197
14.3.3 A/D Control Register (ADCR) ............................................................................ 198
14.4 Operation .......................................................................................................................... 199
14.4.1 Single Mode......................................................................................................... 199
14.4.2 Scan Mode ........................................................................................................... 199
14.4.3 Input Sampling and A/D Conversion Time ......................................................... 200
14.4.4 External Trigger Input Timing............................................................................. 201
14.5 A/D Conversion Precision Definitions.............................................................................. 202
14.6 Usage Notes ...................................................................................................................... 203
14.6.1 Permissible Signal Source Impedance ................................................................. 203
14.6.2 Influences on Absolute Precision......................................................................... 203
Section 15 Power Supply Circuit ......................................................................205
15.1 When Using the Internal Power Supply Step-Down Circuit............................................. 205
15.2 When Not Using the Internal Power Supply Step-Down Circuit...................................... 206
Section 16 Electrical Characteristics .................................................................207
16.1 Absolute Maximum Ratings ............................................................................................. 207
16.2 Electrical Characteristics................................................................................................... 207
16.2.1 Power Supply Voltage and Operating Ranges ..................................................... 207
16.2.2 DC Characteristics ............................................................................................... 209
16.2.3 AC Characteristics ............................................................................................... 214
16.2.4 A/D Converter Characteristics ............................................................................. 217
16.2.5 Watchdog Timer .................................................................................................. 218
16.2.6 Flash Memory Characteristics (Preliminary) ....................................................... 219
16.3 Operation Timing.............................................................................................................. 221
16.4 Output Load Circuit .......................................................................................................... 223
Appendix A Instruction Set ...............................................................................225
A.1
A.2
A.3
A.4
Instruction List .................................................................................................................. 225
Operation Code Map......................................................................................................... 240
Number of Execution States ............................................................................................. 243
Combinations of Instructions and Addressing Modes ...................................................... 250
Appendix B Internal I/O Registers ....................................................................251
B.1
Register Addresses............................................................................................................ 251
Rev. 2.0, 03/01, page xii of xxiv
B.2
B.3
Register Bits......................................................................................................................254
Registers States in Each Operating Mode .........................................................................257
Appendix C I/O Port Block Diagrams .............................................................. 260
C.1
C.2
I/O Port Block ...................................................................................................................260
Port States in Each Operating State...................................................................................275
Appendix D Product Code Lineup.................................................................... 276
Appendix E Package Dimensions..................................................................... 277
Rev. 2.0, 03/01, Page xiii of xxiv
Rev. 2.0, 03/01, page xiv of xxiv
Figures of Contents
Section 1 Overview
Figure 1-1 Internal Block Diagram.................................................................................................2
Figure 1-2 Pin Arrangement (FP-64E) ...........................................................................................3
Figure 1-3 Pin Arrangement (FP-48F)............................................................................................4
Section 2 CPU
Figure 2-1 Memory Map.................................................................................................................8
Figure 2-2 CPU Registers ...............................................................................................................9
Figure 2-3 Usage of General Registers .........................................................................................10
Figure 2-4 Relationship between Stack Pointer and Stack Area...................................................11
Figure 2-5 General Register Data Formats (1)..............................................................................13
Figure 2-5 General Register Data Formats (2)..............................................................................14
Figure 2-6 Memory Data Formats ................................................................................................15
Figure 2-7 Instruction Formats .....................................................................................................26
Figure 2-8 Branch Address Specification in Memory Indirect Mode...........................................29
Figure 2-9 On-Chip Memory Access Cycle .................................................................................32
Figure 2-10 On-Chip Peripheral Module Access Cycle (3-State Access) ....................................33
Figure 2-11 CPU Operation States ...............................................................................................34
Figure 2-12 State Transitions........................................................................................................35
Figure 2-13 Example of Timer Configuration with Two Registers Allocated to Same Address..36
Section 3 Exception Handling
Figure 3-1
Figure 3-2
Figure 3-3
Figure 3-4
Reset Sequence............................................................................................................49
Stack Status after Exception Handling........................................................................50
Interrupt Sequence ......................................................................................................52
Port Mode Register Setting and Interrupt Request Flag Clearing Procedure ..............53
Section 4 Address Break
Figure 4-1
Figure 4-2
Figure 4-2
Figure 4-2
Block Diagram of an Address Break...........................................................................55
Address Break Interrupt Operation Example (1).........................................................58
Address Break Interrupt Operation Example (2).........................................................59
Address Break Interrupt Operation Example (3).........................................................60
Section 5 Clock Pulse Generators
Figure 5-1
Figure 5-2
Figure 5-3
Figure 5-4
Figure 5-5
Block Diagram of Clock Pulse Generators .................................................................61
Typical Connection to Crystal Oscillator ....................................................................61
Equivalent Circuit of Crystal Oscillator ......................................................................62
Typical Connection to Ceramic Oscillator ..................................................................62
Example of External Clock Input................................................................................62
Rev. 1.0, 03/01, page xv of xxiv
Figure 5-6 Example of Incorrect Board Design............................................................................64
Section 6 Power-down Modes
Figure 6-1 Mode Transition Diagram ...........................................................................................69
Section 7 ROM
Figure 7-1
Figure 7-2
Figure 7-3
Figure 7-4
Flash Memory Block Configuration............................................................................74
Programming/Erasing Flowchart Example in User Program Mode............................80
Program/Program-Verify Flowchart ...........................................................................82
Erase/Erase-Verify Flowchart .....................................................................................85
Section 9 I/O Ports
Figure 9-1
Figure 9-2
Figure 9-3
Figure 9-4
Figure 9-5
Figure 9-6
Port 1 Pin Configuration .............................................................................................89
Port 2 Pin Configuration .............................................................................................94
Port 5 Pin Configuration .............................................................................................96
Port 7 Pin Configuration ...........................................................................................101
Port 8 Pin Configuration ...........................................................................................104
Port B Pin Configuration...........................................................................................107
Section 10 Timer V
Figure 10-1 Block Diagram of Timer V .....................................................................................110
Figure 10-2 Increment Timing with Internal Clock....................................................................116
Figure 10-3 Increment Timing with External Clock...................................................................116
Figure 10-4 OVF Set Timing......................................................................................................117
Figure 10-5 CMFA and CMFB Set Timing................................................................................117
Figure 10-6 TMOV Output Timing ............................................................................................117
Figure 10-7 Clear Timing by Compare Match............................................................................117
Figure 10-8 Clear Timing by TMRIV Input ...............................................................................118
Figure 10-9 Pulse Output Example.............................................................................................119
Figure 10-10 Example of Pulse Output Synchronized to TRGV Input ......................................120
Figure 10-11 Contention between TCNTV Write and Clear ......................................................121
Figure 10-12 Contention between TCORA Write and Compare Match.....................................122
Figure 10-13 Internal Clock Switching and TCNTV Operation.................................................122
Section 11 Timer W
Figure 11-1
Figure 11-2
Figure 11-3
Figure 11-4
Figure 11-5
Figure 11-6
Figure 11-7
Figure 11-8
Timer W Block Diagram.........................................................................................125
Free-Running Counter Operation............................................................................134
Periodic Counter Operation.....................................................................................135
0 and 1 Output Example(TOA = 0, TOB = 1).........................................................135
Toggle Output Example (TOA = 0, TOB = 1) ........................................................136
Toggle Output Example (TOA = 0, TOB = 1) ........................................................136
Input Capture Operating Example...........................................................................137
Buffer Operation Example (Input Capture).............................................................137
Rev. 1.0, 03/01, page xvi of xxiv
Figure 11-9 PWM Mode Example (1) ........................................................................................138
Figure 11-10 PWM Mode Example (2) ......................................................................................139
Figure 11-11 Buffer Operation Example (Output Compare) ......................................................139
Figure 11-12 PWM Mode Example
(TOB=0, TOC=0, TOD=0: initial output values are set to 0) ............................... 140
Figure 11-13 PWM Mode Example
(TOB=1, TOC=1,and TOD=1: initial output values are set to 1) ......................... 141
Figure 11-14 Count Timing for Internal Clock Source...............................................................142
Figure 11-15 Count Timing for External Clock Source..............................................................142
Figure 11-16 Output Compare Output Timing ...........................................................................143
Figure 11-17 Input Capture Input Signal Timing .......................................................................143
Figure 11-18 Timing of Counter Clearing by Compare Match...................................................144
Figure 11-19 Buffer Operation Timing (Compare Match) .........................................................144
Figure 11-20 Buffer Operation Timing (Input Capture) .............................................................145
Figure 11-21 Timing of IMFA to IMFD Flag Setting at Compare Match..................................145
Figure 11-22 Timing of IMFA to IMFD Flag Setting at Input Capture......................................146
Figure 11-23 Timing of Status Flag Clearing by the CPU..........................................................146
Figure 11-24 Contention between TCNT Write and Clear .........................................................147
Figure 11-25 Internal Clock Switching and TCNT Operation....................................................148
Section 12 Watchdog Timer
Figure 12-1 Block Diagram of WDT..........................................................................................149
Figure 12-2 Watchdog Timer Operation Example......................................................................152
Section 13 Serial Communication Interface3 (SCI3)
Figure 13-1 Block Diagram of SCI3...........................................................................................154
Figure 13-2 Data Format in Asynchronous Communication ......................................................167
Figure 13-3 Relationship between Output Clock and Transfer Data Phase
(Asynchronous Mode)(Example with 8-Bit Data, Parity, Two Stop Bits)..............168
Figure 13-4 Sample SCI3 Initialization Flowchart .....................................................................169
Figure 13-5 Example SCI3 Operation in Transmission in Asynchronous Mode
(8-Bit Data, Parity, One Stop Bit)...........................................................................170
Figure 13-6 Sample Serial Transmission Flowchart...................................................................171
Figure 13-7 Example SCI3 Operation in Reception in Asynchronous Mode
(8-Bit Data, Parity, One Stop Bit)...........................................................................172
Figure 13-8 Sample Serial Reception Data Flowchart (Asynchronous mode)(1).......................174
Figure 13-8 Sample Serial Reception Data Flowchart (2) ..........................................................175
Figure 13-9 Data Format in Synchronous Communication ........................................................176
Figure 13-10 Example of SCI3 Operation in Transmission in Clocked Synchronous Mode .....177
Figure 13-11 Sample Serial Transmission Flowchart(Clocked Synchronous Mode) .................178
Figure 13-12 Example of SCI3 Reception Operation in Clocked Synchronous Mode...............179
Figure 13-13 Sample Serial Reception Flowchart(Clocked Synchronous Mode) ......................180
Rev. 1.0, 03/01, page xvii of xxiv
Figure 13-14 Sample Flowchart of Simultaneous Serial Transmit and Receive Operations
(Clocked Synchronous Mode) ...............................................................................182
Figure 13-15 Example of Communication Using Multiprocessor Format
(Transmission of Data H'AA to Receiving Station A) ...........................................184
Figure 13-16 Sample Multiprocessor Serial Transmission Flowchart........................................185
Figure 13-17 Sample Multiprocessor Serial Reception Flowchart (1)........................................ 187
Figure 13-17 Sample Multiprocessor Serial Reception Flowchart (2)........................................ 188
Figure 13-18 Example of SCI3 Operation in Reception Using Multiprocessor Format
(Example with 8-Bit Data, MultiprocessorBit, One Stop Bit) ...............................189
Figure 13-19 Receive Data Sampling Timing in Asynchronous Mode ......................................192
Section 14 A/D Converter
Figure 14-1
Figure 14-2
Figure 14-3
Figure 14-4
Figure 14-5
Figure 14-6
Block Diagram of A/D Converter ...........................................................................194
A/D Conversion Timing..........................................................................................200
External Trigger Input Timing ................................................................................201
A/D Conversion Precision Definitions (1) ..............................................................202
A/D Conversion Precision Definitions (2) ..............................................................203
Analog Input Circuit Example ................................................................................204
Section 15 Power Supply Circuit
Figure 15-1 Power Supply Connection when Internal Step-Down Circuit Is Used....................205
Figure 15-2 Power Supply Connection when Internal Step-Down Circuit Is Not Used .............206
Section 16 Electrical Characteristics
Figure 16-1
Figure 16-2
Figure 16-3
Figure 16-4
Figure 16-5
Figure 16-6
System Clock Input Timing ....................................................................................221
RES Low Width Timing .........................................................................................221
Input Timing ...........................................................................................................221
SCK3 Input Clock Timing ......................................................................................222
Serial Interface 3 Synchronous Mode Input/Output Timing ...................................222
Output Load Condition ...........................................................................................223
Appendix C I/O Port Block Diagrams
Figure C.1 Port 1 Block Diagram (P17) .....................................................................................260
Figure C.2 Port 1 Block Diagram (P14) .....................................................................................261
Figure C.3 Port 1 Block Diagram (P16, P15, P12, P10).............................................................262
Figure C.4 Port 1 Block Diagram (P11) .....................................................................................263
Figure C.5 Port 2 Block Diagram (P22) .....................................................................................264
Figure C.6 Port 2 Block Diagram (P21) .....................................................................................265
Figure C.7 Port 2 Block Diagram (P20) .....................................................................................266
Figure C.8 Port 5 Block Diagram (P57, P56) .............................................................................267
Figure C.9 Port 5 Block Diagram (P55) .....................................................................................268
Figure C.10 Port 5 Block Diagram (P54 to P50) ........................................................................269
Figure C.11 Port 7 Block Diagram (P76) ...................................................................................270
Rev. 1.0, 03/01, page xviii of xxiv
Figure C.12
Figure C.13
Figure C.14
Figure C.15
Figure C.16
Port 7 Block Diagram (P75) ...................................................................................271
Port 7 Block Diagram (P74) ...................................................................................272
Port 8 Block Diagram (P84 to P81) ........................................................................273
Port 8 Block Diagram (P80) ...................................................................................274
Port B Block Diagram (PB3 to PB0) ......................................................................275
Appendix E Package Dimensions
Figure E.1 FP-64E Package Dimensions ....................................................................................277
Figure E.2 FP-48F Package Dimensions ....................................................................................278
Rev. 1.0, 03/01, page xix of xxiv
Rev. 1.0, 03/01, page xx of xxiv
Tables of Contents
Section 1 Overview
Table 1-1 Pin Functions..................................................................................................................5
Section 2 CPU
Table 2-1 Operation Notation .......................................................................................................16
Table 2-2 Data Transfer Instructions ............................................................................................17
Table 2-3 Arithmetic Operations Instructions (1).........................................................................18
Table 2-3 Arithmetic Operations Instructions (2).........................................................................19
Table 2-4 Logic Operations Instructions ...................................................................................... 20
Table 2-5 Shift Instructions ..........................................................................................................20
Table 2-6 Bit Manipulation Instructions (1) .................................................................................21
Table 2-6 Bit Manipulation Instructions (2) .................................................................................22
Table 2-7 Branch Instructions.......................................................................................................23
Table 2-8 System Control Instructions .........................................................................................24
Table 2-9 Block Data Transfer Instructions..................................................................................25
Table 2-10 Addressing Modes ......................................................................................................27
Table 2-11 Absolute Address Access Ranges...............................................................................28
Table 2-12 Effective Address Calculation (1) ..............................................................................30
Table 2-12 Effective Address Calculation (2) ..............................................................................31
Section 3 Exception Handling
Table 3-1 Exception Sources and Vector Address........................................................................42
Table 3-2 Interrupt Wait States.....................................................................................................51
Section 4 Address Break
Table 4-1 Access and Data Bus Used ...........................................................................................57
Section 5 Clock Pulse Generators
Table 5-1 Crystal Oscillator Parameters .......................................................................................62
Section 6 Power-down Modes
Table 6-1 Operating Frequency and Waiting Time ......................................................................66
Table 6-2 Transition Mode after the SLEEP Instruction Execution and Interrupt Handling........70
Table 6-3 Internal State in Each Operating Mode ........................................................................70
Section 7 ROM
Table 7-1 Setting Programming Modes ........................................................................................77
Table 7-2 Boot Mode Operation ...................................................................................................79
Rev. 1.0, 03/01, page xxi of xxiv
Table 7-3 System Clock Frequencies for which Automatic Adjustment of LSI Bit Rate is
Possible .........................................................................................................................79
Table 7-4 Reprogram Data Computation Table............................................................................82
Table 7-5 Additional-Program Data Computation Table..............................................................83
Table 7-6 Programming Time.......................................................................................................83
Section 10 Timer V
Table 10-1 Pin Configuration .....................................................................................................110
Table 10-2 Clock signals to input to TCNTV and the counting conditions................................113
Section 11 Timer W
Table 11-1 Timer W Functions...................................................................................................124
Table 11-2 Timer W Pins............................................................................................................125
Section 13 Serial Communication Interface3 (SCI3)
Table 13-1
Table 13-2
Table 13-2
Table 13-2
Table 13-3
Table 13-4
Table 13-5
Table 13-6
Pin Configuration .....................................................................................................155
Examples of BRR Settings for Various Bit Rates (Asynchronous Mode)(1)...........163
Examples of BRR Settings for Various Bit Rates (Asynchronous Mode) (2)..........164
Examples of BRR Settings for Various Bit Rates (Asynchronous Mode) (3)..........165
Maximum Bit Rate for Each Frequency (Asynchronous Mode) ..............................165
BRR Settings for Various Bit Rates (Clocked Synchronous Mode) ........................166
SSR Status Flags and Receive Data Handling..........................................................173
SCI3 Interrupt Requests............................................................................................190
Section 14 A/D Converter
Table 14-1 Pin Configuration .....................................................................................................195
Table 14-2 Analog Input Channels and Corresponding ADDR Registers..................................196
Table 14-3 A/D Conversion Time (Single Mode) ......................................................................201
Section 16 Electrical Characteristics
Table 16-1
Table 16-2
Table 16-2
Table 16-3
Table 16-4
Table 16-5
Table 16-6
Table 16-7
Absolute Maximum Ratings.....................................................................................207
DC Characteristics (1) ..............................................................................................209
DC Characteristics (2) ..............................................................................................213
AC Characteristics....................................................................................................214
Serial Interface (SCI3) Timing .................................................................................216
A/D Converter Characteristics..................................................................................217
Watchdog Timer Characteristics ..............................................................................218
Flash Memory Characteristics (Preliminary)............................................................219
Appendix A Instruction Set
Table A.1 Instruction Set ............................................................................................................227
Table A.2 Operation Code Map (1) ............................................................................................240
Table A.2 Operation Code Map (2) ............................................................................................241
Rev. 1.0, 03/01, page xxii of xxiv
Table A.2
Table A.3
Table A.4
Table A.5
Operation Code Map (3) ............................................................................................242
Number of Cycles in Each Instruction .......................................................................244
Number of Cycles in Each Instruction .......................................................................245
Combinations of Instructions and Addressing Modes ...............................................250
Rev. 1.0, 03/01, page xxiii of xxiv
Rev. 1.0, 03/01, page xxiv of xxiv
Section 1 Overview
1.1
Overview
• High-speed H8/300H central processing unit with an internal 16-bit architecture
Upward-compatible with H8/300 CPUs on an object level
Sixteen 16-bit general registers
62 basic instructions
• Various peripheral functions
Timer V (8-bit timer)
Timer W (16-bit timer)
Watchdog timer
SCI3 (Asynchronous or clocked synchronous serial communication interface)
10-bit A/D converter
• On-chip memory
ROM
Model
ROM
RAM
F-ZTAT Version
HD64F3672
16k
2,048 bytes
HD64F3670
8k
2,048 bytes
• General I/O ports
• I/O pins: 26 I/O pins, including 5 large current ports (IOL = 20mA, @VOL = 1.5V)
• Input-only pins: 4 input pins (also used for analog input)
• Supports various power-down states
• Compact package
Package
(Code)
LQFP-64
(FP-64E)
LQFP-48
(FP-48F)
Body Size
× 10.0 mm
10.0 × 10.0 mm
10.0
Pin Pitch
0.5 mm
0.65 mm
Rev. 1.0, 03/01, page 1 of 280
OSC1
OSC2
RAM
Timer W
SCI3
P76/TMOV
P75/TMCIV
P74/TMRIV
P84/FTIOD
P83/FTIOC
P82/FTIOB
P81/FTIOA
P80/FTCI
Watchdog
timer
Timer V
P57
P56
/
P54/
P53/
P52/
P51/
P50/
A/D converter
Port 5
P55/
AVCC
PB3/AN3
PB2/AN2
PB1/AN1
PB0/AN0
Port B
Figure 1-1 Internal Block Diagram
Rev. 1.0, 03/01, page 2 of 280
CMOS large current port
IOL = 20 mA @ VOL = 1.5 V
ROM
Port 7
Data bus (lower)
Port 8
P22/TXD
P21/RXD
P20/SCK3
EIOT_0
EIOT_1
EIOT_2
CPU
H8/300H
Address bus
/TRGV
P16
P15
P14/
P12
P11
P10
Port 1
P17/
Port 2
System
clock
generator
Data bus (upper)
TEST
VCC
Internal Block Diagram
VSS
VCL
1.2
NC
NC
P80/FTCI
P81/FTIOA
P82/FTIOB
P83/FTIOC
P84/FTIOD
EIOT_0
EIOT_1
EIOT_2
P20/SCK3
P21/RXD
P22/TXD
NC
NC
Pin Arrangement
48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33
NC
49
32
NC
NC
50
31
NC
51
30
P76/TMOV
P15
52
29
P75/TMCIV
P16
53
28
P74/TMRIV
/TRGV
54
27
P57
NC
55
26
P56
NC
56
25
P12
NC
57
24
P11
NC
58
23
P10
PB3/AN3
59
22
P55/
PB2/AN2
60
21
P54/
PB1/AN1
61
20
P53/
PB0/AN0
62
19
P52/
NC
63
18
NC
NC
64
17
NC
H8/3672
/
P51/
NC
NC
8 9 10 11 12 13 14 15 16
P50/
VCL
Note: Do not connect NC pins.
7
VCC
6
OSC1
5
OSC2
4
VSS
3
TEST
2
NC
1
NC
Top view
AVCC
P17/
NC
P14/
NC
1.3
Figure 1-2 Pin Arrangement (FP-64E)
Rev. 1.0, 03/01, page 3 of 280
P80/FTCI
P81/FTIOA
P82/FTIOB
P83/FTIOC
P84/FTIOD
EIOT_0
EIOT_1
EIOT_2
P20/SCK3
P21/RXD
P22/TXD
36 35 34 33 32 31 30 29 28 27 26 25
37
24
P76/TMOV
P15
38
23
P75/TMCIV
P16
39
22
P74/TMRIV
/TRGV
40
21
P57
NC
41
20
P56
NC
42
19
P12
NC
43
18
P11
NC
44
17
P10
PB3/AN3
45
16
P55/
PB2/AN2
46
15
P54/
PB1/AN1
47
14
P53/
PB0/AN0
48
13
P52/
H8/3672
6
7
8
9 10 11 12
P51/
P50/
Vcc
VCL
5
OSC1
4
OSC2
3
Vss
2
TEST
1
NC
Top view
NC
P17/
AVcc
P14/
Figure 1-3 Pin Arrangement (FP-48F)
Rev. 1.0, 03/01, page 4 of 280
/
1.4
Pin Functions
Table 1-1 Pin Functions
Pin No.
Type
Symbol
FP-64E
FP-48F
I/O
Functions
Power
source pins
VCC
12
10
Input
Power supply pin. Connect this pin
to the system power supply.
VSS
9
7
Input
Ground pin. Connect all these pins
to the system power supply(0V).
AVCC
3
1
Input
Analog power supply pin for the A/D
converter. When the A/D converter
is not used, connect all this pin to
the system power supply.
VCL
6
4
Input
Internal step-down power supply
pin. Connect a capacitor of around
0.1µF between this pin and the Vss
pin for stabilization.
OSC1
11
9
Input
OSC2
10
8
Output
These pins connect to a crystal or
ceramic oscillator for system clocks,
or can be used to input an external
clock.
Clock pins
These pins can be used to input an
external clock. See section 5, Clock
Pulse Generators, for a typical
connection.
System
control
Interrupt
pins
RES
7
5
Input
Reset pin. When this driven low, the
chip is reset.
TEST
8
6
Input
Test pin. Connect this pin to Vss.
NMI
35
25
Input
Non-maskable interrupt request
input pin.
IRQ0,
IRQ3
51, 54
37, 40
Input
External interrupt request input
pins. Can select the rising or falling
edge.
WKP0 to
WKP5
13, 14,
19 to 22
11 to 16
Input
External interrupt request input
pins. Can select the rising or falling
edge.
Rev. 1.0, 03/01, page 5 of 280
Pin No.
Type
Symbol
FP-64E
FP-48F
I/O
Functions
Timer V
TMOV
30
24
Output
This is an output pin for waveforms
generated by the output compare
function.
TMCIV
29
23
Input
External event input pin.
TMRIV
28
22
Input
Counter reset input pin.
TRGV
54
40
Input
Counter start trigger input pin.
FTCI
36
26
Input
External event input pin.
FTIOA to
FTIOD
37 to 40
29 to 30
I/O
Output compare output/ input
capture input/ PWM output pin
EIOT
EIOT-0,
EIOT-1,
EIOT-2
41, 42, 43
31, 32, 33
I/O
Interface pin for EIOT emulator
Serial communication
interface
(SCI)
TXD
46
36
Output
Transmit data output pin
RXD
45
35
Input
Receive data input pin
SCK3
44
34
Output
Clock I/O pin
AN3 to AN0 59 to 62
45 to 48
Input
Analog input pin
ADTRG
Timer W
A/D
converter
I/O ports
Other
16
Input
A/D converter trigger input pin.
PB3 to PB0 59 to 62
22
45 to 48
Input
4-bit input port.
P17 to P14, 54 to 51,
P12 to P10 25 to 23
40 to 37,
19 to 17
I/O
7-bit I/O port.
P22 to P20
46 to 44
36 to 34
I/O
3-bit I/O port.
P57 to P50
27, 26,
22 to 19,
14, 13
21, 20,
16 to 11
I/O
8-bit I/O port
P76 to P74
30 to 28
24 to 22
I/O
3-bit I/O port
P84 to P80
40 to 36
30 to 26
I/O
5-bit I/O port.
NC
Rev. 1.0, 03/01, page 6 of 280
These pins must be left
unconnected.
Section 2 CPU
This LSI has an H8/300H CPU with an internal 32-bit architecture that is upword-compatible with
the H8/300CPU, and supports only normal mode, which has a 64-kbyte address space.
• Upward-compatible with H8/300 CPUs
Can execute H8/300 CPUs object programs
Additional eight 16-bit extended registers
32-bit transfer and arithmetic and logic instructions are added
Signed multiply and divide instructions are added.
• General-register architecture
Sixteen 16-bit general registers also usable as sixteen 8-bit registers or eight 32-bit registers
• Sixty-two basic instructions
8/16/32-bit data transfer and arithmetic and logic instructions
Multiply and divide instructions
Powerful bit-manipulation instructions
• Eight addressing modes
Register direct [Rn]
Register indirect [@ERn]
Register indirect with displacement [@(d:16,ERn) or @(d:24,ERn)]
Register indirect with post-increment or pre-decrement [@ERn+ or @–ERn]
Absolute address [@aa:8, @aa:16, @aa:24]
Immediate [#xx:8, #xx:16, or #xx:32]
Program-counter relative [@(d:8,PC) or @(d:16,PC)]
Memory indirect [@@aa:8]
• 64-kbyte address space
• High-speed operation
All frequently-used instructions execute in one or two states
: 2 state
8/16/32-bit register-register add/subtract
8 × 8-bit register-register multiply
16 ÷ 8-bit register-register divide
: 14 states
: 14 states
16 × 16-bit register-register multiply : 22 states
32 ÷ 16-bit register-register divide : 22 states
• Power-down state
Transition to power-down state by SLEEP instruction
Rev. 1.0, 03/01, page 7 of 280
2.1
Address Space and Memory Map
The address space of this LSI is 64 kbytes, which includes the program area and the data area.
Figure 2-1 show the memory map.
HD64F3670
(Flash memory version)
HD64F3672
(Flash memory version)
H'0000
H'0033
H'0034
Interrupt vector
H'0000
H'0033
H'0034
Interrupt vector
On-chip ROM
(8 kbytes)
H'1FFF
On-chip ROM
(16 kbytes)
Not used
H'3FFF
H'4000
EIOT control
program area
(4 kbytes)
H'4FFF
H'4000
EIOT control
program area
(4 kbytes)
H'4FFF
Not used
H'F780
Not used
H'F780
(1-kbyte work area
for flash memory
programming&EIOT)
H'FB7F
H'FB80
On-chip RAM
(2 kbytes)
(1-kbyte work area
for flash memory
programming&EIOT)
H'FB7F
H'FB80
(1-kbyte user area)
On-chip RAM
(2 kbytes)
(1-kbyte user area)
H'FF7F
H'FF80
H'FF7F
H'FF80
Internal I/O register
H'FFFF
Internal I/O register
H'FFFF
Figure 2-1 Memory Map
Rev. 1.0, 03/01, page 8 of 280
2.2
Register Configuration
The H8/300H CPU has the internal registers shown in figure 2-2. There are two types of registers;
general registers and control registers. The control registers are a 24-bit program counter (PC), and
an 8-bit condition code register (CCR).
General Registers (ERn)
15
0 7
0 7
0
ER0
E0
R0H
R0L
ER1
E1
R1H
R1L
ER2
E2
R2H
R2L
ER3
E3
R3H
R3L
ER4
E4
R4H
R4L
ER5
E5
R5H
R5L
ER6
E6
R6H
R6L
ER7 (SP)
E7
R7H
R7L
Control Registers (CR)
23
0
PC
7 6 5 4 3 2 1 0
CCR I UI H U N Z V C
Legend
SP
PC
CCR
I
UI
:Stack pointer
:Program counter
:Condition-code register
:Interrupt mask bit
:User bit
H
U
N
Z
V
C
:Half-carry flag
:User bit
:Negative flag
:Zero flag
:Overflow flag
:Carry flag
Figure 2-2 CPU Registers
Rev. 1.0, 03/01, page 9 of 280
2.2.1
General Registers
The H8/300H CPU has eight 32-bit general registers. These general registers are all functionally
identical and can be used as both address registers and data registers. When a general register is
used as a data register, it can be accessed as a 32-bit, 16-bit, or 8-bit register. Figure 2-3 illustrates
the usage of the general registers. When the general registers are used as 32-bit registers or address
registers, they are designated by the letters ER (ER0 to ER7).
The ER registers divide into 16-bit general registers designated by the letters E (E0 to E7) and R
(R0 to R7). These registers are functionally equivalent, providing a maximum of sixteen 16-bit
registers. The E registers (E0 to E7) are also referred to as extended registers.
The R registers divide into 8-bit registers designated by the letters RH (R0H to R7H) and RL (R0L
to R7L). These registers are functionally equivalent, providing a maximum of sixteen 8-bit
registers.
The usage of each register can be selected independently.
General register ER7 has the function of stack pointer (SP) in addition to its general-register
function, and is used implicitly in exception handling and subroutine calls. Figure 2-4 shows the
stack.
• Address registers
• 32-bit registers
• 16-bit registers
• 8-bit registers
E registers (extended registers)
(E0 to E7)
ER registers
(ER0 to ER7)
RH registers
(R0H to R7H)
R registers
(R0 to R7)
RL registers
(R0L to R7L)
Figure 2-3 Usage of General Registers
Rev. 1.0, 03/01, page 10 of 280
Free area
SP (ER7)
Stack area
Figure 2-4 Relationship between Stack Pointer and Stack Area
2.2.2
Program Counter (PC)
This 24-bit counter indicates the address of the next instruction the CPU will execute. The length
of all CPU instructions is 2 bytes (one word), so the least significant PC bit is ignored. (When an
instruction is fetched, the least significant PC bit is regarded as 0). The PC is initialized when the
start address is loaded by the vector address generated during reset exception-handling sequence.
2.2.3
Condition-Code Register (CCR)
This 8-bit register contains internal CPU status information, including an interrupt mask bit (I) and
half-carry (H), negative (N), zero (Z), overflow (V), and carry (C) flags. The I bit is initialized to 1
by reset exception-handling sequence, but other bits are not initialized.
Some instructions leave flag bits unchanged. Operations can be performed on the CCR bits by the
LDC, STC, ANDC, ORC, and XORC instructions. The N, Z, V, and C flags are used as branching
conditions for conditional branch (Bcc) instructions.
For the action of each instruction on the flag bits, see appendix A.1 Instruction List.
Rev. 1.0, 03/01, page 11 of 280
Bit
Bit Name
Initial Value
R/W
Description
7
I
1
R/W
Interrupt Mask Bit
Masks interrupts other than NMI when set to 1.
NMI is accepted regardless of the I bit setting.
The I bit is set to 1 at the start of an exceptionhandling sequence.
6
UI
undefined
R/W
User Bit
Can be written and read by software using the
LDC, STC, ANDC, ORC, and XORC instructions.
5
H
undefined
R/W
Half-Carry Flag
When the ADD.B, ADDX.B, SUB.B, SUBX.B,
CMP.B, or NEG.B instruction is executed, this
flag is set to 1 if there is a carry or borrow at bit 3,
and cleared to 0 otherwise. When the ADD.W,
SUB.W, CMP.W, or NEG.W instruction is
executed, the H flag is set to 1 if there is a carry
or borrow at bit 11, and cleared to 0 otherwise.
When the ADD.L, SUB.L, CMP.L, or NEG.L
instruction is executed, the H flag is set to 1 if
there is a carry or borrow at bit 27, and cleared to
0 otherwise.
4
U
undefined
R/W
User Bit
Can be written and read by software using the
LDC, STC, ANDC, ORC, and XORC instructions.
3
N
undefined
R/W
Negative Flag
Stores the value of the most significant bit of data
as a sign bit.
2
Z
undefined
R/W
Zero Flag
Set to 1 to indicate zero data, and cleared to 0 to
indicate non-zero data.
1
V
undefined
R/W
Overflow Flag
Set to 1 when an arithmetic overflow occurs, and
cleared to 0 at other times.
0
C
undefined
R/W
Carry Flag
Set to 1 when a carry occurs, and cleared to 0
otherwise. Used by:
•
Add instructions, to indicate a carry
•
Subtract instructions, to indicate a borrow
•
Shift and rotate instructions, to indicate a
carry
The carry flag is also used as a bit accumulator
by bit manipulation instructions.
Rev. 1.0, 03/01, page 12 of 280
2.3
Data Formats
The H8/300H CPU can process 1-bit, 4-bit (BCD), 8-bit (byte), 16-bit (word), and 32-bit
(longword) data. Bit-manipulation instructions operate on 1-bit data by accessing bit n (n = 0, 1, 2,
…, 7) of byte operand data. The DAA and DAS decimal-adjust instructions treat byte data as two
digits of 4-bit BCD data.
2.3.1
General Register Data Formats
Figure 2-5 shows the data formats in general registers.
Data Type
General Register
Data Format
7
RnH
1-bit data
0
Don't care
7 6 5 4 3 2 1 0
7
1-bit data
RnL
4-bit BCD data
RnH
4-bit BCD data
RnL
Byte data
RnH
Don't care
7
4 3
Upper
0
7 6 5 4 3 2 1 0
0
Lower
Don't care
7
Don't care
7
4 3
Upper
0
Don't care
MSB
LSB
7
Byte data
RnL
0
Lower
0
Don't care
MSB
LSB
Figure 2-5 General Register Data Formats (1)
Rev. 1.0, 03/01, page 13 of 280
Data Type
General
Register
Word data
Rn
Data Format
15
Word data
MSB
En
15
MSB
Longword
data
LSB
0
LSB
ERn
31
16 15
MSB
Legend
ERn
: General register ER
En
: General register E
Rn
: General register R
RnH
: General register RH
RnL
: General register RL
MSB : Most significant bit
LSB
0
: Least significant bit
Figure 2-5 General Register Data Formats (2)
Rev. 1.0, 03/01, page 14 of 280
0
LSB
2.3.2
Memory Data Formats
Figure 2-6 shows the data formats in memory. The H8/300H CPU can access word data and
longword data in memory, however word or longword data must begin at an even address. If an
attempt is made to access word or longword data at an odd address, an address error does not
occur, however the least significant bit of the address is regarded as 0, so access begins the
preceding address. This also applies to instruction fetches.
When ER7(SP)is used as an address register to access the stack, the operand size should be word
or longword.
Data Type
Address
Data Format
1-bit data
Address L
7
Byte data
Address L
MSB
Word data
Address 2M
MSB
7
0
6
5
4
3
2
Address 2N
0
LSB
LSB
Address 2M+1
Longword data
1
MSB
Address 2N+1
Address 2N+2
LSB
Address 2N+3
Figure 2-6 Memory Data Formats
Rev. 1.0, 03/01, page 15 of 280
2.4
Instruction Set
2.4.1
Table of Instructions Classified by Function
The H8/300H CPU has 62 instructions. Tables 2-2 to 2-9 summarizes the instructions in each
functional category. The notation used in tables 2-2 to 2-9 is defined below.
Table 2-1 Operation Notation
Symbol
Description
Rd
General register (destination)*
Rs
General register (source)*
Rn
General register*
ERn
General register (32-bit register or address register)
(EAd)
Destination operand
(EAs)
Source operand
CCR
Condition-code register
N
N (negative) flag in CCR
Z
Z (zero) flag in CCR
V
V (overflow) flag in CCR
C
C (carry) flag in CCR
PC
Program counter
SP
Stack pointer
#IMM
Immediate data
disp
Displacement
+
Addition
–
Subtraction
×
Multiplication
÷
Division
∧
Logical AND
∨
Logical OR
⊕
Logical XOR
→
Move
¬
NOT (logical complement)
:3/:8/:16/:24
3-, 8-, 16-, or 24-bit length
Note: * General registers include 8-bit registers (R0H to R7H, R0L to R7L), 16-bit registers (R0 to
R7, E0 to E7), and 32-bit registers/address registers (ER0 to ER7).
Rev. 1.0, 03/01, page 16 of 280
Table 2-2 Data Transfer Instructions
Instruction
Size*
Function
MOV
B/W/L
(EAs) → Rd, Rs → (EAd)
Moves data between two general registers or between a general register
and memory, or moves immediate data to a general register.
MOVFPE
B
(EAs) → Rd, Cannot be used in this LSI.
MOVTPE
B
Rs → (EAs) Cannot be used in this LSI.
POP
W/L
@SP+ → Rn
Pops a general register from the stack. POP.W Rn is identical to MOV.W
@SP+, Rn. POP.L ERn is identical to MOV.L @SP+, ERn.
PUSH
W/L
Rn → @–SP
Pushes a general register onto the stack. PUSH.W Rn is identical to
MOV.W Rn, @–SP. PUSH.L ERn is identical to MOV.L ERn, @–SP.
Note: * Refers to the operand size.
B: Byte
W: Word
L: Longword
Rev. 1.0, 03/01, page 17 of 280
Table 2-3 Arithmetic Operations Instructions (1)
Instruction
Size*
Function
ADD
SUB
B/W/L
Rd ± Rs → Rd, Rd ± #IMM → Rd
Performs addition or subtraction on data in two general registers, or on
immediate data and data in a general register (immediate byte data
cannot be subtracted from byte data in a general register. Use the SUBX
or ADD instruction.)
ADDX
SUBX
B
Rd ± Rs ± C → Rd, Rd ± #IMM ± C → Rd
Performs addition or subtraction with carry on byte data in two general
registers, or on immediate data and data in a general register.
INC
DEC
B/W/L
Rd ± 1 → Rd, Rd ± 2 → Rd
Increments or decrements a general register by 1 or 2. (Byte operands
can be incremented or decremented by 1 only.)
ADDS
SUBS
L
Rd ± 1 → Rd, Rd ± 2 → Rd, Rd ± 4 → Rd
Adds or subtracts the value 1, 2, or 4 to or from data in a 32-bit register.
DAA
DAS
B
Rd decimal adjust → Rd
Decimal-adjusts an addition or subtraction result in a general register by
referring to the CCR to produce 4-bit BCD data.
MULXU
B/W
Rd × Rs → Rd
Performs unsigned multiplication on data in two general registers: either
8 bits × 8 bits → 16 bits or 16 bits × 16 bits → 32 bits.
MULXS
B/W
Rd × Rs → Rd
Performs signed multiplication on data in two general registers: either 8
bits × 8 bits → 16 bits or 16 bits × 16 bits → 32 bits.
DIVXU
B/W
Rd ÷ Rs → Rd
Performs unsigned division on data in two general registers: either 16
bits ÷ 8 bits → 8-bit quotient and 8-bit remainder or 32 bits ÷ 16 bits →
16-bit quotient and 16-bit remainder.
Note: * Refers to the operand size.
B: Byte
W: Word
L: Longword
Rev. 1.0, 03/01, page 18 of 280
Table 2-3 Arithmetic Operations Instructions (2)
Instruction
Size*
Function
DIVXS
B/W
Rd ÷ Rs → Rd
Performs signed division on data in two general registers: either 16 bits ÷
8 bits → 8-bit quotient and 8-bit remainder or 32 bits ÷ 16 bits → 16-bit
quotient and 16-bit remainder.
CMP
B/W/L
Rd – Rs, Rd – #IMM
Compares data in a general register with data in another general register
or with immediate data, and sets CCR bits according to the result.
NEG
B/W/L
0 – Rd → Rd
Takes the two's complement (arithmetic complement) of data in a
general register.
EXTU
W/L
Rd (zero extension) → Rd
Extends the lower 8 bits of a 16-bit register to word size, or the lower 16
bits of a 32-bit register to longword size, by padding with zeros on the
left.
EXTS
W/L
Rd (sign extension) → Rd
Extends the lower 8 bits of a 16-bit register to word size, or the lower 16
bits of a 32-bit register to longword size, by extending the sign bit.
Note:
* Refers to the operand size.
B: Byte
W: Word
L: Longword
Rev. 1.0, 03/01, page 19 of 280
Table 2-4 Logic Operations Instructions
Instruction
Size*
Function
AND
B/W/L
Rd ∧ Rs → Rd, Rd ∧ #IMM → Rd
Performs a logical AND operation on a general register and another
general register or immediate data.
OR
B/W/L
Rd ∨ Rs → Rd, Rd ∨ #IMM → Rd
Performs a logical OR operation on a general register and another
general register or immediate data.
XOR
B/W/L
Rd ⊕ Rs → Rd, Rd ⊕ #IMM → Rd
Performs a logical exclusive OR operation on a general register and
another general register or immediate data.
NOT
B/W/L
¬ (Rd) → (Rd)
Takes the one's complement of general register contents.
Note: * Refers to the operand size.
B: Byte
W: Word
L: Longword
Table 2-5 Shift Instructions
Instruction
Size*
Function
SHAL
SHAR
B/W/L
Rd (shift) → Rd
Performs an arithmetic shift on general register contents.
SHLL
SHLR
B/W/L
Rd (shift) → Rd
Performs a logical shift on general register contents.
ROTL
ROTR
B/W/L
Rd (rotate) → Rd
Rotates general register contents.
ROTXL
ROTXR
B/W/L
Rd (rotate) → Rd
Rotates general register contents through the carry flag.
Note: * Refers to the operand size.
B: Byte
W: Word
L: Longword
Rev. 1.0, 03/01, page 20 of 280
Table 2-6 Bit Manipulation Instructions (1)
Instruction
Size*
Function
BSET
B
1 → (<bit-No.> of <EAd>)
Sets a specified bit in a general register or memory operand to 1. The bit
number is specified by 3-bit immediate data or the lower three bits of a
general register.
BCLR
B
0 → (<bit-No.> of <EAd>)
Clears a specified bit in a general register or memory operand to 0. The
bit number is specified by 3-bit immediate data or the lower three bits of a
general register.
BNOT
B
¬ (<bit-No.> of <EAd>) → (<bit-No.> of <EAd>)
Inverts a specified bit in a general register or memory operand. The bit
number is specified by 3-bit immediate data or the lower three bits of a
general register.
BTST
B
¬ (<bit-No.> of <EAd>) → Z
Tests a specified bit in a general register or memory operand and sets or
clears the Z flag accordingly. The bit number is specified by 3-bit
immediate data or the lower three bits of a general register.
BAND
B
C ∧ (<bit-No.> of <EAd>) → C
ANDs the carry flag with a specified bit in a general register or memory
operand and stores the result in the carry flag.
BIAND
B
C ∧ ¬ (<bit-No.> of <EAd>) → C
ANDs the carry flag with the inverse of a specified bit in a general
register or memory operand and stores the result in the carry flag.
The bit number is specified by 3-bit immediate data.
BOR
B
C ∨ (<bit-No.> of <EAd>) → C
ORs the carry flag with a specified bit in a general register or memory
operand and stores the result in the carry flag.
BIOR
B
C ∨ ¬ (<bit-No.> of <EAd>) → C
ORs the carry flag with the inverse of a specified bit in a general register
or memory operand and stores the result in the carry flag.
The bit number is specified by 3-bit immediate data.
Note: * Refers to the operand size.
B: Byte
Rev. 1.0, 03/01, page 21 of 280
Table 2-6 Bit Manipulation Instructions (2)
Instruction
Size*
Function
BXOR
B
C ⊕ (<bit-No.> of <EAd>) → C
XORs the carry flag with a specified bit in a general register or memory
operand and stores the result in the carry flag.
BIXOR
B
C ⊕ ¬ (<bit-No.> of <EAd>) → C
XORs the carry flag with the inverse of a specified bit in a general
register or memory operand and stores the result in the carry flag.
The bit number is specified by 3-bit immediate data.
BLD
B
(<bit-No.> of <EAd>) → C
Transfers a specified bit in a general register or memory operand to the
carry flag.
BILD
B
¬ (<bit-No.> of <EAd>) → C
Transfers the inverse of a specified bit in a general register or memory
operand to the carry flag.
The bit number is specified by 3-bit immediate data.
BST
B
C → (<bit-No.> of <EAd>)
Transfers the carry flag value to a specified bit in a general register or
memory operand.
BIST
B
¬ C → (<bit-No.> of <EAd>)
Transfers the inverse of the carry flag value to a specified bit in a general
register or memory operand.
The bit number is specified by 3-bit immediate data.
Note: * Refers to the operand size.
B: Byte
Rev. 1.0, 03/01, page 22 of 280
Table 2-7 Branch Instructions
Instruction
Size
Function
Bcc
—
Branches to a specified address if a specified condition is true. The
branching conditions are listed below.
Mnemonic
Description
Condition
BRA(BT)
Always (true)
Always
BRN(BF)
Never (false)
Never
BHI
High
C∨Z=0
BLS
Low or same
C∨Z=1
BCC(BHS)
Carry clear
(high or same)
C=0
BCS(BLO)
Carry set (low)
C=1
BNE
Not equal
Z=0
BEQ
Equal
Z=1
BVC
Overflow clear
V=0
BVS
Overflow set
V=1
BPL
Plus
N=0
BMI
Minus
N=1
BGE
Greater or equal
N⊕V=0
BLT
Less than
N⊕V=1
BGT
Greater than
Z∨(N ⊕ V) = 0
BLE
Less or equal
Z∨(N ⊕ V) = 1
JMP
—
Branches unconditionally to a specified address.
BSR
—
Branches to a subroutine at a specified address.
JSR
—
Branches to a subroutine at a specified address.
RTS
—
Returns from a subroutine
Rev. 1.0, 03/01, page 23 of 280
Table 2-8 System Control Instructions
Instruction
Size*
Function
TRAPA
—
Starts trap-instruction exception handling.
RTE
—
Returns from an exception-handling routine.
SLEEP
—
Causes a transition to a power-down state.
LDC
B/W
(EAs) → CCR
Moves the source operand contents to the CCR. The CCR size is one
byte, but in transfer from memory, data is read by word access.
STC
B/W
CCR → (EAd), EXR → (EAd)
Transfers the CCR contents to a destination location. The condition code
register size is one byte, but in transfer to memory, data is written by
word access.
ANDC
B
CCR ∧ #IMM → CCR, EXR ∧ #IMM → EXR
Logically ANDs the CCR with immediate data.
ORC
B
CCR ∨ #IMM → CCR, EXR ∨ #IMM → EXR
Logically ORs the CCR with immediate data.
XORC
B
CCR ⊕ #IMM → CCR, EXR ⊕ #IMM → EXR
Logically XORs the CCR with immediate data.
NOP
—
PC + 2 → PC
Only increments the program counter.
Note: * Refers to the operand size.
B: Byte
W: Word
Rev. 1.0, 03/01, page 24 of 280
Table 2-9 Block Data Transfer Instructions
Instruction
Size
Function
EEPMOV.B
—
if R4L ≠ 0 then
Repeat @ER5+ → @ER6+,
R4L–1 → R4L
Until R4L = 0
else next;
EEPMOV.W
—
if R4 ≠ 0 then
Repeat @ER5+ → @ER6+,
R4–1 → R4
Until R4 = 0
else next;
Transfers a data block. Starting from the address set in ER5, transfers
data for the number of bytes set in R4L or R4 to the address location set
in ER6.
Execution of the next instruction begins as soon as the transfer is
completed.
2.4.2
Basic Instruction Formats
H8/300H CPU instructions consist of 2-byte (1-word) units. An instruction consists of an
operation field (op field), a register field (r field), an effective address extension (EA field), and a
condition field (cc).
Figure 2-7 shows examples of instruction formats.
Rev. 1.0, 03/01, page 25 of 280
• Operation Field
Indicates the function of the instruction, the addressing mode, and the operation to be carried
out on the operand. The operation field always includes the first four bits of the instruction.
Some instructions have two operation fields.
• Register Field
Specifies a general register. Address registers are specified by 3 bits, and data registers by 3
bits or 4 bits. Some instructions have two register fields. Some have no register field.
• Effective Address Extension
8, 16, or 32 bits specifying immediate data, an absolute address, or a displacement. A24-bit
address or displacement is treated as a 32-bit data in which the first 8 bits are 0 (H'00).
• Condition Field
Specifies the branching condition of Bcc instructions.
(1) Operation field only
op
NOP, RTS, etc.
(2) Operation field and register fields
op
rm
rn
ADD.B Rn, Rm, etc.
(3) Operation field, register fields, and effective address extension
op
rn
rm
MOV.B @(d:16, Rn), Rm
EA(disp)
(4) Operation field, effective address extension, and condition field
op
cc
EA(disp)
BRA d:8
Figure 2-7 Instruction Formats
Rev. 1.0, 03/01, page 26 of 280
2.5
Addressing Modes and Effective Address Calculation
2.5.1
Addressing Modes
The following describes the H8/300H CPU. In this LSI, the upper eight bits are ignored in the
generated 24-bit address, so the effective address is 16 bits.
The H8/300H CPU supports the eight addressing modes listed in table 2-10. Each instruction uses
a subset of these addressing modes. Addressing modes that can be used differ depending on the
instruction. For details, refer to appendix A.4, Combinations of Instructions and Addressing
Modes.
Arithmetic and logic instructions can use the register direct and immediate modes. Data transfer
instructions can use all addressing modes except program-counter relative and memory indirect.
Bit manipulation instructions use register direct, register indirect, or the absolute addressing mode
to specify an operand, and register direct (BSET, BCLR, BNOT, and BTST instructions) or
immediate (3-bit) addressing mode to specify a bit number in the operand.
Table 2-10 Addressing Modes
No.
Addressing Mode
Symbol
1
Register direct
Rn
2
Register indirect
@ERn
3
Register indirect with displacement
@(d:16,ERn)/@(d:24,ERn)
4
Register indirect with post-increment
Register indirect with pre-decrement
@ERn+
@–ERn
5
Absolute address
@aa:8/@aa:16/@aa:24
6
Immediate
#xx:8/#xx:16/#xx:32
7
Program-counter relative
@(d:8,PC)/@(d:16,PC)
8
Memory indirect
@@aa:8
Register Direct—Rn
The register field of the instruction specifies an 8-, 16-, or 32-bit general register containing the
operand. R0H to R7H and R0L to R7L can be specified as 8-bit registers. R0 to R7 and E0 to E7
can be specified as 16-bit registers. ER0 to ER7 can be specified as 32-bit registers.
Register Indirect—@ERn
The register field of the instruction code specifies an address register (ERn), the lower 24 bits of
which contain the address of the operand on memory.
Rev. 1.0, 03/01, page 27 of 280
Register Indirect with Displacement—@(d:16, ERn) or @(d:24, ERn)
A 16-bit or 24-bit displacement contained in the instruction is added to an address register (ERn)
specified by the register field of the instruction, and the lower 24 bits of the sum the address of a
memory operand. A 16-bit displacement is sign-extended when added.
Register Indirect with Post-Increment or Pre-Decrement—@ERn+ or @-ERn
• Register indirect with post-increment—@ERn+
The register field of the instruction code specifies an address register (ERn) the lower 24 bits
of which contains the address of a memory operand. After the operand is accessed, 1, 2, or 4 is
added to the address register contents (32 bits) and the sum is stored in the address register.
The value added is 1 for byte access, 2 for word access, or 4 for longword access. For the word
or longword access, the register value should be even.
• Register indirect with pre-decrement—@-ERn
The value 1, 2, or 4 is subtracted from an address register (ERn) specified by the register field
in the instruction code, and the lower 24 bits of the result is the address of a memory operand.
The result is also stored in the address register. The value subtracted is 1 for byte access, 2 for
word access, or 4 for longword access. For the word or longword access, the register value
should be even.
Absolute Address—@aa:8, @aa:16, @aa:24
The instruction code contains the absolute address of a memory operand. The absolute address
may be 8 bits long (@aa:8), 16 bits long (@aa:16), 24 bits long (@aa:24)
For an 8-bit absolute address, the upper 16 bits are all assumed to be 1 (H'FFFF). For a 16-bit
absolute address the upper 8 bits are a sign extension. A 24-bit absolute address can access the
entire address space.
The access ranges of absolute addresses for the series of this LSI are those shown in table 2-11,
because the upper 8 bits are ignored.
Table 2-11 Absolute Address Access Ranges
Absolute Address
Access Range
8 bits (@aa:8)
H'FF00 to H'FFFF
16 bits (@aa:16)
H'0000 to H'FFFF
24 bits (@aa:24)
H'0000 to H'FFFF
Immediate—#xx:8, #xx:16, or #xx:32
The instruction contains 8-bit (#xx:8), 16-bit (#xx:16), or 32-bit (#xx:32) immediate data as an
operand.
Rev. 1.0, 03/01, page 28 of 280
The ADDS, SUBS, INC, and DEC instructions contain immediate data implicitly. Some bit
manipulation instructions contain 3-bit immediate data in the instruction code, specifying a bit
number. The TRAPA instruction contains 2-bit immediate data in its instruction code, specifying a
vector address.
Program-Counter Relative—@(d:8, PC) or @(d:16, PC)
This mode is used in the BSR instruction. An 8-bit or 16-bit displacement contained in the
instruction is sign-extended and added to the 24-bit PC contents to generate a branch address. The
PC value to which the displacement is added is the address of the first byte of the next instruction,
so the possible branching range is –126 to +128 bytes (–63 to +64 words) or –32766 to +32768
bytes (–16383 to +16384 words) from the branch instruction. The resulting value should be an
even number.
Memory Indirect—@@aa:8
This mode can be used by the JMP and JSR instructions. The instruction code contains an 8-bit
absolute address specifying a memory operand. This memory operand contains a branch address.
The memory operand is accessed by longword access. The first byte of the memory operand is
ignored, generating a 24-bit branch address. Figure 2-8 shows how to specify branch address for in
memory indirect mode. The upper bits of the absolute address are all assumed to be 0, so the
address range is 0 to 255 (H'0000 to H'00FF).
Note that the first part of the address range is also the exception vector area.
Specified
by @aa:8
Dummy
Branch address
Figure 2-8 Branch Address Specification in Memory Indirect Mode
2.5.2
Effective Address Calculation
Table 2-12 indicates how effective addresses are calculated in each addressing mode. In this LSI
the upper 8 bits of the effective address are ignored in order to generate a 16-bit effective address.
Rev. 1.0, 03/01, page 29 of 280
Table 2-12 Effective Address Calculation (1)
No
1
Addressing Mode and Instruction Format
op
2
Effective Address Calculation
Effective Address (EA)
Register direct(Rn)
rm
Operand is general register contents.
rn
Register indirect(@ERn)
0
31
23
0
23
0
23
0
23
0
General register contents
op
3
r
Register indirect with displacement
@(d:16,ERn) or @(d:24,ERn)
0
31
General register contents
op
r
disp
0
31
Sign extension
4
Register indirect with post-increment or
pre-decrement
•Register indirect with post-increment @ERn+
op
0
31
General register contents
r
•Register indirect with pre-decrement @-ERn
disp
1, 2, or 4
31
0
General register contents
op
r
1, 2, or 4
The value to be added or subtracted is 1 when the
operand is byte size, 2 for word size, and 4 for
longword size.
Rev. 1.0, 03/01, page 30 of 280
Table 2-12 Effective Address Calculation (2)
No
5
Addressing Mode and Instruction Format
Effective Address Calculation
Effective Address (EA)
Absolute address
@aa:8
23
op
abs
8 7
0
H'FFFF
@aa:16
23
op
abs
16 15
0
Sign extension
@aa:24
op
0
23
abs
6
Immediate
#xx:8/#xx:16/#xx:32
op
7
Operand is immediate data.
IMM
0
23
Program-counter relative
PC contents
@(d:8,PC) @(d:16,PC)
op
disp
0
23
Sign
extension
8
disp
0
23
Memory indirect @@aa:8
23
op
abs
0
8 7
abs
H'0000
0
15
Memory contents
Legend
r, rm,rn :
op :
disp :
IMM :
abs :
23
16 15
0
H'00
Register field
Operation field
Displacement
Immediate data
Absolute address
Rev. 1.0, 03/01, page 31 of 280
2.6
Basic Bus Cycle
CPU operation is synchronized by a system clock (ø) or a subclock (øSUB). The period from a rising
edge of ø or øSUB to the next rising edge is called one state. A bus cycle consists of two states or
three states. The cycle differs depending on whether access is to on-chip memory or to on-chip
peripheral modules.
2.6.1
Access to On-Chip Memory (RAM, ROM)
Access to on-chip memory takes place in two states. The data bus width is 16 bits, allowing access
in byte or word size. Figure 2-9 shows the on-chip memory access cycle.
Bus cycle
T1 state
T2 state
ø or ø SUB
Internal address bus
Address
Internal read signal
Internal data bus
(read access)
Read data
Internal write signal
Internal data bus
(write access)
Write data
Figure 2-9 On-Chip Memory Access Cycle
Rev. 1.0, 03/01, page 32 of 280
2.6.2
On-Chip Peripheral Modules
On-chip peripheral modules are accessed in two states or three states. The data bus width is 8 bits
or 16 bits depending on the register. For description on the data bus width and number of
accessing states of each register, refer to appendix B, Register Addresses. Registers with 16-bit
data bus width can be accessed by word size only. Registers with 8-bit data bus width can be
accessed by byte or word size. When a register with 8-bit data bus width is accessed by word size,
access is completed in two cycles. In two-state access, the operation timing is the same as that for
on-chip memory.
Figure 2-10 shows the operation timing in the case of three-state access to an on-chip peripheral
module.
Bus cycle
T1 state
T2 state
T3 state
ø or ø SUB
Internal
address bus
Address
Internal
read signal
Internal
data bus
(read access)
Read data
Internal
write signal
Internal
data bus
(write access)
Write data
Figure 2-10 On-Chip Peripheral Module Access Cycle (3-State Access)
Rev. 1.0, 03/01, page 33 of 280
2.7
CPU States
There are four CPU states: the reset state, program execution state, program halt state, and
exception-handling state. The program execution state includes active mode. In the program halt
state there are a sleep mode, and standby mode. These states are shown in figure 2-11, Figure 2-12
shows the state transitions. For details on program execution state and program halt state, refer to
section 6, Power-Down Modes. For details on exception processing, refer to section 3, Exception
Handling.
CPU state
Reset state
The CPU is initialized
Program
execution state
Active
(high speed) mode
The CPU executes successive program
instructions at high speed,
synchronized by the system clock
The CPU executes
successive program
instructions at reduced
speed, synchronized
by the subclock
Program halt state
A state in which some
or all of the chip
functions are stopped
to conserve power
Sleep mode
Power-down
modes
Standby mode
Exceptionhandling state
A transient state in which the CPU changes
the processing flow due to a reset or an interrupt
Figure 2-11 CPU Operation States
Rev. 1.0, 03/01, page 34 of 280
Reset cleared
Reset state
Exception-handling state
Reset occurs
Reset
occurs
Reset
occurs
Interrupt
source
Program halt state
Interrupt
source
Exceptionhandling
complete
Program execution state
SLEEP instruction executed
Figure 2-12 State Transitions
2.8
Usage Notes
2.8.1
Notes on Data Access to Empty Areas
The address space of this LSI includes empty areas in addition to the ROM, RAM, and on-chip
I/O registers areas available to the user. When data is transferred from CPU to empty areas, the
transferred data will be lost. This action may also cause the CPU to malfunction. When data is
transferred from an empty area to CPU, the contents of the data cannot be guaranteed.
2.8.2
EEPMOV Instruction
EEPMOV is a block-transfer instruction and transfers the byte size of data indicated by R4L,
which starts from the address indicated by R5, to the address indicated by R6. Set R4L and R6 so
that the end address of the destination address (value of R6 + R4L) does not exceed H'FFFF (the
value of R6 must not change from H'FFFF to H'0000 during execution).
2.8.3
Bit Manipulation Instruction
The BSET, BCLR, BNOT, BST, and BIST instructions read data from the specified address in
byte units, manipulate the data of the target bit, and write data to the same address again in byte
units. Special care is required when using these instructions in cases where two registers are
assigned to the same address or when a bit is directly manipulated for a port, because this may
rewrite data of a bit other than the bit to be manipulated.
Bit manipulation for two registers assigned to the same address
Example: Bit manipulation for the timer load register and timer counter
(Applicable for timer B and timer C, not for the series of this LSI.)
Rev. 1.0, 03/01, page 35 of 280
Figure 2-13 shows an example of a timer in which two timer registers are assigned to the same
address. When a bit manipulation instruction accesses the timer load register and timer counter of
a reloadable timer, since these two registers share the same address, the following operations takes
place.
1. Data is read in byte units.
2. The CPU sets or resets the bit to be manipulated with the bit manipulation instruction.
3. The written data is written again in byte units to the timer load register.
The timer is counting, so the value read is not necessarily the same as the value in the timer load
register. As a result, bits other than the intended bit in the timer counter may be modified and the
modified value may be written to the timer load register.
Read
Count clock
Timer counter
Reload
Write
Timer load register
Internal bus
Figure 2-13 Example of Timer Configuration with Two Registers Allocated to Same
Address
Example 2: The BSET instruction is executed for port 5.
P57 and P56 are input pins, with a low-level signal input at P57 and a high-level signal input at
P56. P55 to P50 are output pins and output low-level signals. An example to output a high-level
signal at P50 with a BSET instruction is shown below.
Rev. 1.0, 03/01, page 36 of 280
Prior to executing BSET
P57
P56
P55
P54
P53
P52
P51
P50
Input/output
Input
Input
Output
Output
Output
Output
Output
Output
Pin state
Low
level
High
level
Low
level
Low
level
Low
level
Low
level
Low
level
Low
level
PCR5
0
0
1
1
1
1
1
1
PDR5
1
0
0
0
0
0
0
0
BSET instruction executed
BSET
#0,
@PDR5
The BSET instruction is executed for port 5.
After executing BSET
P57
P56
P55
P54
P53
P52
P51
P50
Input/output
Input
Input
Output
Output
Output
Output
Output
Output
Pin state
Low
level
High
level
Low
level
Low
level
Low
level
Low
level
Low
level
High
level
PCR5
0
0
1
1
1
1
1
1
PDR5
0
1
0
0
0
0
0
1
Description on operation
When the BSET instruction is executed, first the CPU reads port 5.
Since P57 and P56 are input pins, the CPU reads the pin states (low-level and high-level input).
P55 to P50 are output pins, so the CPU reads the value in PDR5. In this example PDR5 has a
value of H'80, but the value read by the CPU is H'40.
Next, the CPU sets bit 0 of the read data to 1, changing the PDR5 data to H'41.
Finally, the CPU writes H'41 to PDR5, completing execution of BSET.
As a result of the BSET instruction, bit 0 in PDR5 becomes 1, and P50 outputs a high-level signal.
However, bits 7 and 6 of PDR5 end up with different values. To prevent this problem, store a copy
of the PDR5 data in a work area in memory. Perform the bit manipulation on the data in the work
area, then write this data to PDR5.
Rev. 1.0, 03/01, page 37 of 280
Prior to executing BSET
MOV.B
MOV.B
MOV.B
#80,
R0L,
R0L,
R0L
@RAM0
@PDR5
P57
P56
The PDR5 value (H'80) is written to a work area in
memory (RAM0) as well as to PDR5.
P55
P54
P53
P52
P51
P50
Input/output
Input
Input
Output
Output
Output
Output
Output
Output
Pin state
Low
level
High
level
Low
level
Low
level
Low
level
Low
level
Low
level
Low
level
PCR5
0
0
1
1
1
1
1
1
PDR5
1
0
0
0
0
0
0
0
RAM0
1
0
0
0
0
0
0
0
BSET instruction executed
BSET
#0,
@RAM0
The BSET instruction is executed designating the PDR5
work area (RAM0).
After executing BSET
MOV.B
MOV.B
@RAM0, R0L
R0L, @PDR5
The work area (RAM0) value is written to PDR5.
P57
P56
P55
P54
P53
P52
P51
P50
Input/output
Input
Input
Output
Output
Output
Output
Output
Output
Pin state
Low
level
High
level
Low
level
Low
level
Low
level
Low
level
Low
level
High
level
PCR5
0
0
1
1
1
1
1
1
PDR5
1
0
0
0
0
0
0
1
RAM0
1
0
0
0
0
0
0
1
Bit Manipulation in a Register Containing a Write-Only Bit
Example 3: BCLR instruction executed designating port 5 control register PCR5
P57 and P56 are input pins, with a low-level signal input at P57 and a high-level signal input at
P56. P55 to P50 are output pins that output low-level signals. An example of setting the P50 pin as
an input pin by the BCLR instruction is shown below. It is assumed that a high-level signal will be
input to this input pin.
Rev. 1.0, 03/01, page 38 of 280
Prior to executing BCLR
P57
P56
P55
P54
P53
P52
P51
P50
Input/output
Input
Input
Output
Output
Output
Output
Output
Output
Pin state
Low
level
High
level
Low
level
Low
level
Low
level
Low
level
Low
level
Low
level
PCR5
0
0
1
1
1
1
1
1
PDR5
1
0
0
0
0
0
0
0
BCLR instruction executed
BCLR
#0,
@PCR5
The BCLR instruction is executed for PCR5.
After executing BCLR
P57
P56
P55
P54
P53
P52
P51
P50
Input/output
Output
Output
Output
Output
Output
Output
Output
Input
Pin state
Low
level
High
level
Low
level
Low
level
Low
level
Low
level
Low
level
High
level
PCR5
1
1
1
1
1
1
1
0
PDR5
1
0
0
0
0
0
0
0
Description on operation
When the BCLR instruction is executed, first the CPU reads PCR5. Since PCR5 is a write-only
register, the CPU reads a value of H'FF, even though the PCR5 value is actually H'3F.
Next, the CPU clears bit 0 in the read data to 0, changing the data to H'FE.
Finally, H'FE is written to PCR5 and BCLR instruction execution ends.
As a result of this operation, bit 0 in PCR5 becomes 0, making P50 an input port. However, bits 7
and 6 in PCR5 change to 1, so that P57 and P56 change from input pins to output pins. To prevent
this problem, store a copy of the PCR5 data in a work area in memory and manipulate data of the
bit in the work area, then write this data to PCR5.
Rev. 1.0, 03/01, page 39 of 280
Prior to executing BCLR
MOV.B
MOV.B
MOV.B
#3F,
R0L,
R0L,
R0L
@RAM0
@PCR5
P57
P56
The PCR5 value (H'3F) is written to a work area in
memory (RAM0) as well as to PCR5.
P55
P54
P53
P52
P51
P50
Input/output
Input
Input
Output
Output
Output
Output
Output
Output
Pin state
Low
level
High
level
Low
level
Low
level
Low
level
Low
level
Low
level
Low
level
PCR5
0
0
1
1
1
1
1
1
PDR5
1
0
0
0
0
0
0
0
RAM0
0
0
1
1
1
1
1
1
BCLR instruction executed
BCLR
#0,
@RAM0
The BCLR instructions executed for the PCR5 work area
(RAM0).
After executing BCLR
MOV.B
MOV.B
@RAM0, R0L
R0L, @PCR5
The work area (RAM0) value is written to PCR5.
P57
P56
P55
P54
P53
P52
P51
P50
Input/output
Input
Input
Output
Output
Output
Output
Output
Output
Pin state
Low
level
High
level
Low
level
Low
level
Low
level
Low
level
Low
level
High
level
PCR5
0
0
1
1
1
1
1
0
PDR5
1
0
0
0
0
0
0
0
RAM0
0
0
1
1
1
1
1
0
Rev. 1.0, 03/01, page 40 of 280
Section 3 Exception Handling
Exception handling may be caused by a reset, a trap instruction (TRAPA), or interrupts.
• Reset
A reset has the highest exception priority. Exception handling starts as soon as the reset is cleared
by the RES pin. The chip is also reset when the watchdog timer overflows, and exception handling
starts. Exception handling is the same as exception handling by the RES pin.
• Trap Instruction
Exception handling starts when a trap instruction (TRAPA) is executed. The TRAPA instruction
generates a vector address corresponding to a vector number from 0 to 3, as specified in the
instruction code. Exception handling can be executed at all times in the program execution state.
• Interrupts
External interrupts other than NMI and internal interrupts other than address break are masked by
the I bit in CCR, and kept masked while the I bit is set to 1. Exception handling starts when the
current instruction or exception handling ends, if an interrupt request has been issued.
3.1
Exception Sources and Vector Address
Table 3-1 shows the vector addresses and priority of each exception handling. When more than
one interrupt is requested, handling is performed from the interrupt with the highest priority.
Rev. 1.0, 03/01, page 41 of 280
Table 3-1 Exception Sources and Vector Address
Vector
Exception Sources
Number
Vector Address
Reset
0
H'0000 to H'0001
Reserved for system use
1 to 6
H'0002 to H'000D
NMI
7
H'000E to H'000F
Trap instruction (#0)
8
H'0010 to H'0011
(#1)
9
H'0012 to H'0013
(#2)
10
H'0014 to H'0015
(#3)
11
H'0016 to H'0017
Break conditions satisfied
12
H'0018 to H'0019
Direct transition by executing the SLEEP instruction
13
H'001A to H'001B
IRQ0
14
H'001C to H'001D
IRQ3
17
H'0022 to H'0023
WKP
18
H'0024 to H'0025
Reserved for system use
20
H'0028 to H'0029
Timer W
21
H'002A to H'002B
22
H'002C to H'002D
23
H'002E to H'002F
25
H'0032 to H'0033
Input capture A/compare match A
Input capture B/compare match B
Input capture C/compare match C
Input capture D/compare match D
Timer W overflow
Timer V
Timer V compare match A
Timer V compare match B
Timer V overflow
SCI3
SCI3 receive data full
SCI3 transmit data empty
SCI3 transmit end
SCI3 receive error
A/D conversion end
Rev. 1.0, 03/01, page 42 of 280
3.2
Register Descriptions
Interrupts are controlled by the following registers. For details on register addresses and register
states during each processing, refer to appendix B, Internal I/O Register.
• Interrupt Edge Select Register 1(IEGR1)
• Interrupt Edge Select Register 2(IEGR2)
• Interrupt Enable Register 1(IENR1)
• Interrupt Flag Register 1(IRR1)
• Wakeup Interrupt Flag Register(IWPR)
3.2.1
Interrupt Edge Select Register 1(IEGR1)
IEGR1 selects the direction of an edge that generates interrupt requests of pins and IRQ3 and
IRQ0.
Bit
Bit Name
Initial Value R/W
7
−
0
−
Description
Reserved
This bit is always read as 0, and cannot be modified.
6
−
1
−
Reserved
5
−
1
−
These bits are always read as 1, and cannot be modified.
4
−
1
−
3
IEG3
0
R/W
IRQ3 Edge Select
0: Falling edge of IRQ3 pin input is detected
1: Rising edge of IRQ3 pin input is detected
2
−
0
−
Reserved
This bit is always read as 0, and cannot be modified.
1
−
0
−
Reserved
This bit is always read as 0, and cannot be modified.
0
IEG0
0
R/W
IRQ0 Edge Select
0: Falling edge of IRQ0 pin input is detected
1: Rising edge of IRQ0 pin input is detected
Rev. 1.0, 03/01, page 43 of 280
3.2.2
Interrupt Edge Select Register 2(IEGR2)
IEGR2 selects the direction of an edge that generates interrupt requests of the pins ADTRG and
WKP5 to WKP0.
Bit
Bit Name
Initial Value
R/W
Description
7
−
1
−
Reserved
6
−
1
−
These bits are always read as 1, and cannot be modified.
5
WPEG5
0
R/W
WKP5 Edge Select
0: Falling edge of WKP5(ADTRG) pin input is detected
1: Rising edge of WKP5(ADTRG) pin input is detected
4
WPEG4
0
R/W
WKP4 Edge Select
0: Falling edge of WKP4 pin input is detected
1: Rising edge of WKP4 pin input is detected
3
WPEG3
0
R/W
WKP3 Edge Select
0: Falling edge of WKP3 pin input is detected
1: Rising edge of WKP3 pin input is detected
2
WPEG2
0
R/W
WKP2 Edge Select
0: Falling edge of WKP2 pin input is detected
1: Rising edge of WKP2 pin input is detected
1
WPEG1
0
R/W
WKP1Edge Select
0: Falling edge of WKP1 pin input is detected
1: Rising edge of WKP1 pin input is detected
0
WPEG0
0
R/W
WKP0 Edge Select
0: Falling edge of WKP0 pin input is detected
1: Rising edge of WKP0 pin input is detected
Rev. 1.0, 03/01, page 44 of 280
3.2.3
Interrupt Enable Register 1(IENR1)
IENR1 enables direct transition interrupts, and external pin interrupts.
Bit
Bit Name
Initial Value
R/W
Description
7
IENDT
0
R/W
Direct Transfer Interrupt Enable
When this bit is set to 1, direct transition interrupt requests
are enabled.
6
−
0
−
5
IENWP
0
R/W
Reserved
This bit is always read as 0, and cannot be modified.
Wakeup Interrupt Enable
This bit is an enable bit, which is common to the pins
WKP5 to WKP0. When the bit is set to 1, interrupt
requests are enabled.
4
−
1
−
Reserved
This bit is always read as 1, and cannot be modified.
3
IEN3
0
R/W
IRQ3 Interrupt Enable
When this bit is set to 1, interrupt requests of the IRQ3 pin
are enabled.
2
−
0
−
Reserved
This bit is always read as 0, and cannot be modified.
1
−
0
−
Reserved
This bit is always read as 0, and cannot be modified.
0
IEN0
0
R/W
IRQ0 Interrupt Enable
When this bit is set to 1, interrupt requests of the IRQ0 pin
are enabled.
When disabling interrupts by clearing bits in an interrupt enable register, or when clearing bits in
an interrupt flag register, always do so while interrupts are masked(I=1). If the above clear
operations are performed while I=0, and as a result a conflict arises between the clear instruction
and an interrupt request, exception handling for the interrupt will be executed after the clear
instruction has been executed.
Rev. 1.0, 03/01, page 45 of 280
3.2.4
Interrupt Flag Register 1(IRR1)
IRR1 is a status flag register for direct transition interrupts, and IRQ3 and IRQ0 interrupt requests.
Bit
Bit Name
Initial Value
R/W
Description
7
IRRDT
0
R/W
Direct Transfer Interrupt Request Flag
[Setting condition]
When a direct transfer is made by executing a SLEEP
instruction while DTON in SYSCR2 is set to 1.
[Clearing condition]
When IRRDT is cleared by writing 0
6
−
0
−
Reserved
This bit is always read as 0, and cannot be modified.
5
4
3
−
−
IRRI3
1
1
0
−
−
R/W
Reserved
These bits are always read as 1, and cannot be modified.
IRQ3 Interrupt Request Flag
[Setting condition]
When IRQ3 pin is designated for interrupt input and the
designated signal edge is detected.
[Clearing condition]
When IRRI3 is cleared by writing 0
2
−
0
−
Reserved
This bit is always read as 0, and cannot be modified.
1
−
0
−
0
IRRl0
0
R/W
Reserved
This bit is always read as 0, and cannot be modified.
Rev. 1.0, 03/01, page 46 of 280
IRQ0 Interrupt Request Flag
[Setting condition]
When IRQ0 pin is designated for interrupt input and the
designated signal edge is detected.
[Clearing condition]
When IRRI0 is cleared by writing 0
3.2.5
Wakeup Interrupt Flag Register(IWPR)
IWPR is a status flag register for WKP5 to WKP0 interrupt requests.
Bit
7
6
Bit Name
−
−
Initial Value
1
1
R/W
−
−
Description
Reserved
These bits are always read as 1, and cannot be modified.
5
IWPF5
0
R/W
WKP5 Interrupt Request Flag
[Setting condition]
When WKP5 pin is designated for interrupt input and the
designated signal edge is detected.
[Clearing condition]
When IWPF5 is cleared by writing 0.
4
IWPF4
0
R/W
WKP4 Interrupt Request Flag
[Setting condition]
When WKP4 pin is designated for interrupt input and the
designated signal edge is detected.
[Clearing condition]
When IWPF4 is cleared by writing 0.
3
IWPF3
0
R/W
WKP3 Interrupt Request Flag
[Setting condition]
When WKP3 pin is designated for interrupt input and the
designated signal edge is detected.
[Clearing condition]
When IWPF3 is cleared by writing 0.
2
IWPF2
0
R/W
WKP2 Interrupt Request Flag
[Setting condition]
When WKP2 pin is designated for interrupt input and the
designated signal edge is detected.
[Clearing condition]
When IWPF2 is cleared by writing 0.
1
IWPF1
0
R/W
WKP1 Interrupt Request Flag
[Setting condition]
When WKP1 pin is designated for interrupt input and the
designated signal edge is detected.
[Clearing condition]
When IWPF1 is cleared by writing 0.
0
IWPF0
0
R/W
WKP0 Interrupt Request Flag
[Setting condition]
When WKP0 pin is designated for interrupt input and the
designated signal edge is detected.
[Clearing condition]
When IWPF0 is cleared by writing 0.
Rev. 1.0, 03/01, page 47 of 280
3.3
Reset
When the RES pin goes low, all processing halts and this LSI enters the reset. The internal state of
the CPU and the registers of the on-chip peripheral modules are initialized by the reset. To ensure
that this LSI is reset at power-up, hold the RES pin low until the clock pulse generator output
stabilizes. To reset the chip during operation, hold the RES pin low for at least 10 system clock
cycles. When the RES pin goes high after being held low for the necessary time, this LSI starts
reset exception handling. The reset exception handling sequence is shown in figure 3-1. The reset
exception handling sequence is as follows:
1. Set the I bit in the condition code register (CCR) to 1.
2. The CPU generates a reset exception handling vector address (from H'0000 to H'0001), the
data in that address is sent to the program counter (PC) as the start address, and program
execution starts from that address.
3.4
Interrupt Exception Handling
3.4.1
External Interrupts
There are external interrupts, NMI, IRQ3, IRQ0, and WKP.
NMI
NMI interrupt is requested by input falling edge to pin NMI.
NMI is the highest interrupt, and can always be accepted without depending on the I bit value
in CCR.
IRQ3 to IRQ0 Interrupts
IRQ3 to IRQ0 interrupts are requested by input signals to pins IRQ3 to IRQ0. These four
interrupts are given different vector addresses, and are detected individually by either rising
edge sensing or falling edge sensing, depending on the settings of bits IEG3 to IEG0 in
IEGR1.
When pins IRQ3 to IRQ0 are designated for interrupt input in PMR1 and the designated signal
edge is input, the corresponding bit in IRR1 is set to 1, requesting the CPU of an interrupt.
When IRQ3 to IRQ0 interrupt is accepted, the I bit is set to 1 in CCR. These interrupts can be
masked by setting bits IEN3 to IEN0 in IENR1.
Rev. 1.0, 03/01, page 48 of 280
WKP5 to WKP0 Interrupts
WKP5 to WKP0 interrupts are requested by input signals to pins WKP5 to WKP0. These six
interrupts have the same vector addresses, and are detected individually by either rising edge
sensing or falling edge sensing, depending on the settings of bits WPEG5 to WPEG0 in
IEGR2.
When pins WKP5 to WKP0 are designated for interrupt input in PMR5 and the designated
signal edge is input, the corresponding bit in IWPR is set to 1, requesting the CPU of an
interrupt. These interrupts can be masked by setting bit IENWP in IENR1.
Reset cleared
Initial program
instruction prefetch
Vector fetch Internal
processing
ø
Internal
address bus
(1)
(2)
Internal read
signal
Internal write
signal
Internal data
bus (16 bits)
(2)
(3)
(1) Reset exception handling vector address (H'0000)
(2) Program start address
(3) Initial program instruction
Figure 3-1 Reset Sequence
3.4.2
Internal Interrupts
Each on-chip peripheral module has a flag to show the interrupt request status and the enable bit to
enable or disable the interrupt. For direct transfer interrupt requests generated by execution of a
SLEEP instruction, this function is included in IRR1 and IENR1.
When an on-chip peripheral module requests an interrupt, the corresponding interrupt request
status flag is set to 1, requesting the CPU of an interrupt. When this interrupt is accepted, the I bit
is set to 1 in CCR. These interrupts can be masked by writing 0 to clear the corresponding enable
bit.
Rev. 1.0, 03/01, page 49 of 280
3.4.3
Interrupt Handling Sequence
Interrupts are controlled by an interrupt controller.
Interrupt operation is described as follows.
1. If an interrupt occurs while the NMI or interrupt enable bit is set to 1, an interrupt request
signal is sent to the interrupt controller.
2. When multiple interrupt requests are generated, the interrupt controller requests to the CPU for
the interrupt handling with the highest priority at that time according to table 3-1. Other
interrupt requests are held pending.
3. The CPU accepts the NMI or address break without depending on the I bit value. Other
interrupt requests are accepted, if the I bit is cleared to 0 in CCR; if the I bit is set to 1, the
interrupt request is held pending.
4. If the CPU accepts the interrupt after processing of the current instruction is completed,
interrupt exception handling will begin. First, both PC and CCR are pushed onto the stack. The
state of the stack at this time is shown in figure 3-2. The PC value pushed onto the stack is the
address of the first instruction to be executed upon return from interrupt handling.
5. Then, the I bit of CCR is set to 1, masking further interrupts excluding the NMI and address
break. Upon return from interrupt handling, the values of I bit and other bits in CCR will be
restored and returned to the values prior to the start of interrupt exception handling.
6.
Next, the CPU generates the vector address corresponding to the accepted interrupt, and
transfers the address to PC as a start address of the interrupt handling-routine. Then a program
starts executing from the address indicated in PC.
Figure 3-3 shows a typical interrupt sequence where the program area is in the on-chip ROM and
the stack area is in the on-chip RAM.
Rev. 1.0, 03/01, page 50 of 280
SP – 4
SP (R7)
CCR
SP – 3
SP + 1
CCR*3
SP – 2
SP + 2
PCH
SP – 1
SP + 3
PCL
SP (R7)
SP + 4
Even address
Stack area
Prior to start of interrupt
exception handling
PC and CCR
saved to stack
After completion of interrupt
exception handling
Legend:
PCH : Upper 8 bits of program counter (PC)
PCL : Lower 8 bits of program counter (PC)
CCR: Condition code register
SP: Stack pointer
Notes: 1. PC shows the address of the first instruction to be executed upon return from the interrupt
handling routine.
2. Register contents must always be saved and restored by word length, starting from
an even-numbered address.
3. Ignored when returning from the interrupt handling routine.
Figure 3-2 Stack Status after Exception Handling
3.4.4
Interrupt Response Time
Table 3-2 shows the number of wait states after an interrupt request flag is set until the first
instruction of the interrupt handling-routine is executed.
Table 3-2 Interrupt Wait States
Item
States
Total
Waiting time for completion of executing instruction*
1 to 13
15 to 27
Saving of PC and CCR to stack
4
Vector fetch
2
Instruction fetch
4
Internal processing
4
Note: * Not including EEPMOV instruction.
Rev. 1.0, 03/01, page 51 of 280
Figure 3-3 Interrupt Sequence
Rev. 1.0, 03/01, page 52 of 280
(2)
(1)
(4)
Instruction
prefetch
(3)
Internal
processing
(5)
(1)
Stack access
(6)
(7)
(9)
Vector fetch
(8)
(1) Instruction prefetch address (Instruction is not executed. Address is saved as PC contents, becoming return address.)
(2)(4) Instruction code (not executed)
(3) Instruction prefetch address (Instruction is not executed.)
(5) SP – 2
(6) SP – 4
(7) CCR
(8) Vector address
(9) Starting address of interrupt-handling routine (contents of vector)
(10) First instruction of interrupt-handling routine
Internal data bus
(16 bits)
Internal write
signal
Internal read
signal
Internal
address bus
ø
Interrupt
request signal
Interrupt level
decision and wait for
end of instruction
Interrupt is
accepted
(10)
(9)
Prefetch instruction of
Internal
interrupt-handling routine
processing
3.5
3.5.1
Usage Notes
Interrupts after Reset
If an interrupt is accepted after a reset and before the stack pointer (SP) is initialized, the PC and
CCR will not be saved correctly, leading to a program crash. To prevent this, all interrupt requests,
including NMI, are disabled immediately after a reset. Since the first instruction of a program is
always executed immediately after the reset state ends, make sure that this instruction initializes
the stack pointer (example: MOV.W #xx: 16, SP).
3.5.2
Notes on Stack Area Use
When word data is accessed, the least significant bit of the address is regarded as 0. Access to the
stack always takes place in word size, so the stack pointer (SP: R7) should never indicate an odd
address. Use PUSH Rn (MOV.W Rn, @–SP) or POP Rn (MOV.W @SP+, Rn) to save or restore
register values.
3.5.3
Notes on Rewriting Port Mode Registers
When a port mode register is rewritten to switch the functions of external interrupt pins, IRQ3 to
IRQ0, and WKP5 to WKP0, the interrupt request flag may be set to 1.
Figure 3-4 shows a port mode register setting and interrupt request flag clearing procedure.
When switching a pin function, mask the interrupt before setting the bit in the port mode register.
After accessing the port mode register, execute at least one instruction (e.g., NOP), then clear the
interrupt request flag from 1 to 0.
CCR I bit ← 1
Interrupts masked. (Another possibility
is to disable the relevant interrupt in
interrupt enable register 1.)
Set port mode register bit
Execute NOP instruction
After setting the port mode register bit,
first execute at least one instruction
(e.g., NOP), then clear the interrupt
request flag to 0
Clear interrupt request flag to 0
CCR I bit ← 0
Interrupt mask cleared
Figure 3-4 Port Mode Register Setting and Interrupt Request Flag Clearing Procedure
Rev. 1.0, 03/01, page 53 of 280
Rev. 1.0, 03/01, page 54 of 280
Section 4 Address Break
The address break simplifies on-board program debugging. It requests an address break interrupt
when the set break condition is satisfied. The interrupt request is not affected by the I bit of CCR.
Break conditions that can be set include instruction execution at a specific address and a
combination of access and data at a specific address. With the address break function, the
execution start point of a program containing a bug is detected and execution is branched to the
correcting program. Figure 4-1 shows a block diagram of the address break.
Internal address bus
Comparator
BARL
Internal data bus
BARH
ABRKCR
Interrupt
generation
control circuit
ABRKSR
BDRH
BDRL
Comparator
Interrupt
Legend:
BARH, BARL:
BDRH, BDRL:
ABRKCR:
ABRKSR:
Break address register
Break data register
Address break control register
Address break status register
Figure 4-1 Block Diagram of an Address Break
4.1
Register Descriptions
Address break has the following registers. For details on register addresses and register states
during each processing, refer to appendix B, Internal I/O Register.
• Address break control register(ABRKCR)
• Address break status register(ABRKSR)
• Break address register(BARH, BARL)
• Break data register(BDRH, BDRL)
Rev. 1.0, 03/01, page 55 of 280
4.1.1
Address Break Control Register(ABRKCR)
ABRKCR sets address break conditions.
Bit
Bit Name
Initial Value
R/W
Description
7
RTINTE
1
R/W
RTE Interrupt Enable
When this bit is 0, the interrupt immediately after
executing RTE is masked and then one instruction must
be executed. When this bit is 1, the interrupt is not
masked.
6
CSEL1
0
R/W
Condition Select 1 and 0
5
CSEL0
0
R/W
These bits set address break conditions.
00: Instruction execution cycle
01: CPU data read cycle
10: CPU data write cycle
11: CPU data read/write cycle
4
ACMP2
0
R/W
Address Compare Condition Select 2 to 0
3
ACMP1
0
R/W
2
ACMP0
0
R/W
These bits comparison condition between the address set
in BAR and the internal address bus.
000: Compares 16-bit addresses
001: Compares upper 12-bit addresses
010: Compares upper 8-bit addresses
011: Compares upper 4-bit addresses
1XX: Reserved
1
DCMP1
0
R/W
Data Compare Condition Select 1 and 0
0
DCMP0
0
R/W
These bits set the comparison condition between the data
set in BDR and the internal data bus.
00: No data comparison
01: Compares lower 8-bit data between BDRL and data
bus
10: Compares upper 8-bit data between BDRH and data
bus
11: Compares 16-bit data between BDR and data bus
Legend: X: Don't care.
When an address break is set in the data read cycle or data write cycle, the data bus used will
depend on the combination of the byte/word access and address. Table 4-1 shows the access and
data bus used. When an I/O register space with an 8-bit data bus width is accessed in word size, a
byte access is generated twice. For details on data widths of each register, see appendix B.1,
Register Addresses.
Rev. 1.0, 03/01, page 56 of 280
Table 4-1 Access and Data Bus Used
Word Access
Byte Access
Even Address Odd Address
Even Address Odd Address
ROM space
Upper 8 bits
Lower 8 bits
Upper 8 bits
Upper 8 bits
RAM space
Upper 8 bits
Lower 8 bits
Upper 8 bits
Upper 8 bits
I/O register with 8-bit data bus Upper 8 bits
width
Upper 8 bits
Upper 8 bits
Upper 8 bits
I/O register with 16-bit data
bus width
Lower 8 bits
—
—
4.1.2
Upper 8 bits
Address Break Status Register(ABRKSR)
ABRKSR consists of the address break interrupt flag and the address break interrupt enable bit.
Bit
Bit Name
Initial Value
R/W
Description
7
ABIF
0
R/W
Address Break Interrupt Flag
[Setting condition]
When the condition set in ABRKCR is satisfied
[Clearing condition]
When 0 is written after ABIF=1 is read
6
ABIE
0
R/W
Address Break Interrupt Enable
When this bit is 1, an address break interrupt request is
enabled.
5
−
0
−
Reserved
4
−
0
−
These bits are always read as 1 and cannot be modified.
3
−
0
−
2
−
0
−
1
−
0
−
0
−
0
−
4.1.3
Break Address Registers (BARH, BARL)
BARH, BARL are 16-bit read/write registers that set the address for generating an address break
interrupt. When setting the address break condition to the instruction execution cycle, set the first
byte address of the instruction. The initial value of this register is H'FFFF.
Rev. 1.0, 03/01, page 57 of 280
4.1.4
Break Data Registers (BDRH, BDRL)
BDRH, BDRL are 16-bit read/write registers that set the data for generating an address break
interrupt. BDRH is compared with the upper 8-bit data bus. BDRL is compared with the lower 8bit data bus. When memory or registers are accessed by byte, the upper 8-bit data bus is used for
even and odd addresses in the data transmission. Therefore, comparison data must be set in
BDRH for byte access. For word access, the data bus used depends on the address. See section
4.1.1, Address Break Control Register, for details. The initial value of this register is undefined.
4.2
Operation
When the ABIE bit in ABRKSR is set to 1, if the ABIF bit in ABRKSR is set to 1 by the
combination of the address set in BAR, the data set in BDR, and the conditions set in ABRKCR,
the address break function generates an interrupt request to the CPU. When the interrupt request
is accepted, interrupt exception handling starts after the instruction being executed ends. The
address break interrupt is not masked because of the I bit in CCR of the CPU.
Figures 4-2 show the operation examples of the address break interrupt setting.
When the address break is specified in instruction execution cycle
Register setting
• ABRKCR = H'80
• BAR = H'025A
Program
0258
* 025A
025C
0260
0262
:
NOP
NOP
MOV.W @H'025A,R0
NOP
NOP
:
Underline indicates the address
to be stacked.
NOP
MOV
MOV
NOP
instruc- instruc- instruc- instruction
tion 1
tion 2
Internal
tion
prefetch prefetch prefetch prefetch processing
Stack save
φ
Address
bus
0258
025A
025C
025E
SP-2
SP-4
Interrupt
request
Interrupt acceptance
Figure 4-2 Address Break Interrupt Operation Example (1)
Rev. 1.0, 03/01, page 58 of 280
When the address break is specified in the data read cycle
Register setting
• ABRKCR = H'A0
• BAR = H'025A
Program
0258
025A
* 025C
0260
0262
:
NOP
NOP
MOV.W @H'025A,R0
NOP
Underline indicates the address
NOP
to be stacked.
:
MOV
NOP
MOV
Next
MOV
NOP
instruc- instruc- instruc- instruc- instruc- instruInternal Stack
tion 2
tion
tion
ction
tion 1
tion
prefetch prefetch prefetch execution prefetch prefetch processing save
φ
Address
bus
025C
025E
0260
025A
0262
0264
SP-2
Interrupt
request
Interrupt acceptance
Figure 4-2 Address Break Interrupt Operation Example (2)
Rev. 1.0, 03/01, page 59 of 280
When the interrupt acceptance is prohibited after the RTE (RTB) instruction
Register setting
• ABRKCR = H'10
Interrupt
Interrupt
Program
0258 NOP
025A NOP
025C MOV.W @H'025A,R0
0260 NOP
0262 NOP
:
:
RTE
NOP
instruc- instruction
tion
prefetch prefetch
Stack
resumption
:
039A
039C
039E
:
Underline indicates the
address to be stacked.
:
NOP
RTE
NOP
:
MOV
MOV
NOP
instruc- instruc- instrucInternal
tion 1
tion 2
tion
processing prefetch prefetch prefetch
Continues
to the
lower
φ
Address
bus
039C
039E
SP
SP+2
025C
Interrupt
request
025E
0260
Interrupt request
is prohibited
NOP
MOV
instruc- instruction
Internal
tion
execution prefetch processing
Stack restore
Vector Internal
fetch processing
φ
Address
bus
025A
0262
SP-2
SP-4
XXXX
Interrupt
request
Interrupt acceptance
Figure 4-2 Address Break Interrupt Operation Example (3)
Rev. 1.0, 03/01, page 60 of 280
Section 5 Clock Pulse Generators
Clock oscillator circuitry (CPG: clock pulse generator) is provided on-chip, including a system
clock pulse generator. The system clock pulse generator consists of a system clock oscillator, a
duty correction circuit, and system clock dividers.
Figure 5-1 shows a block diagram of the clock pulse generators.
OSC1
OSC2
System
clock
oscillator
øOSC
(fOSC)
Duty
correction
circuit
øOSC
(fOSC)
System
clock
divider
øOSC
øOSC/8
øOSC/16
øOSC/32
øOSC/64
ø
System clock pulse generator
Prescaler S
(13 bits)
ø/2
to
ø/8192
Figure 5-1 Block Diagram of Clock Pulse Generators
The basic clock signals that drive the CPU and on-chip peripheral modules are ø.
The system clock is divided into ø/8192 to ø/2 by prescaler S and they are supplied to respective
peripheral modules.
5.1
System Clock Generator
Clock pulses can be supplied to the system clock divider either by connecting a crystal or ceramic
oscillator, or by providing external clock input.
5.1.1
Connecting a Crystal Oscillator
Figure 5-2 shows a typical method of connecting a crystal oscillator. An AT-cut parallelresonance crystal resonator should be used. Figure 5-3 shows the equivalent circuit of a crystal
oscillator. An oscillator having the characteristics given in table 5-1 should be used.
OSC 1
OSC 2
C1
C2
C1 = C 2 = 12 pF ±20%
Figure 5-2 Typical Connection to Crystal Oscillator
Rev. 1.0, 03/01, page 61 of 280
LS
RS
CS
OSC 1
OSC 2
C0
Figure 5-3 Equivalent Circuit of Crystal Oscillator
Table 5-1 Crystal Oscillator Parameters
Frequency(MHz)
2
4
8
10
16
RS (max)
500 Ω
120 Ω
80 Ω
60 Ω
50 Ω
C0 (max)
7 pF
7 pF
7 pF
7 pF
7 pF
5.1.2
Connecting a Ceramic Oscillator
Figure 5-4 shows a typical method of connecting a ceramic oscillator.
C1
OSC1
C2
OSC2
C1 = 30 pF ±10%
C2 = 30 pF ±10%
Figure 5-4 Typical Connection to Ceramic Oscillator
5.1.3
External Clock Input Method
Connect an external clock signal to pin OSC1, and leave pin OSC2 open. Figure 5-5 shows a
typical connection. The duty cycle of the external clock signal must be 45 to 55%.
OSC1
OSC 2
External clock input
Open
Figure 5-5 Example of External Clock Input
Rev. 1.0, 03/01, page 62 of 280
5.2
Prescalers
5.2.1
Prescaler S
Prescaler S is a 13-bit counter using the system clock (ø) as its input clock. It is incremented once
per clock period.
Prescaler S is initialized to H'0000 by a reset, and starts counting on exit from the reset state.
In standby mode and subsleep mode, the system clock pulse generator stops. Prescaler S also stops
and is initialized to H'0000.
The CPU cannot read or write prescaler S.
The output from prescaler S is shared by the on-chip peripheral modules. The divider ratio can be
set separately for each on-chip peripheral function.
In active mode the clock input to prescaler S is determined by the division factor designated by
MA2 and MA0 in SYSCR2.
5.3
Usage Notes
5.3.1
Note on Oscillators
Oscillator characteristics are closely related to board design and should be carefully evaluated by
the user, referring to the examples shown in this section. Oscillator circuit constants will differ
depending on the oscillator element, stray capacitance in its interconnecting circuit, and other
factors. Suitable constants should be determined in consultation with the oscillator element
manufacturer. Design the circuit so that the oscillator element never receives voltages exceeding
its maximum rating.
Rev. 1.0, 03/01, page 63 of 280
5.3.2
Notes on Board Design
When using a crystal resonator (ceramic resonator), place the resonator and its load capacitors as
close as possible to the OSC1 and OSC2 pins. Other signal lines should be routed away from the
oscillator circuit to prevent induction from interfering with correct oscillation (see figure 5-6).
Avoid
Signal A
Signal B
C1
OSC1
C2
OSC2
Figure 5-6 Example of Incorrect Board Design
Rev. 1.0, 03/01, page 64 of 280
Section 6 Power-down Modes
This LSI has six modes of operation after a reset. These include a normal active mode and four
power-down modes, in which power dissipation is significantly reduced. The module standby
mode reduces power dissipation by selectively halting on-chip module functions.
• Active mode
The CPU and all on-chip peripheral modules are operable on the system clock. The system
clock frequency can be selected from øosc, øosc/8, øosc/16, øosc/32, and øosc/64.
• Sleep mode
The CPU halts. On-chip peripheral functions are operable on the system clock.
• Standby mode
The CPU and all on-chip peripheral modules halt.
• Subsleep mode
The CPU and all on-chip peripheral modules halt.
I/O ports keep the same states as before the transition.
• Module standby mode
Independent of the above modes, power dissipation can be reduced by halting on-chip modules
that are not used in module units.
6.1
Register Descriptions
The registers related to power-down modes are listed below. For details on register addresses and
register states during each processing, refer to appendix B, Internal I/O Register.
• System control register 1(SYSCR1)
• System control register 2(SYSCR2)
• Module standby control register 1(MSTCR1)
• Module standby control register 2(MSTCR2)
6.1.1
System Control Register 1(SYSCR1)
The SYSCR1 register controls the power-down modes, as well as SYSCR2.
Rev. 1.0, 03/01, page 65 of 280
Bit
Bit Name
Initial Value
R/W
Description
7
SSBY
0
R/W
Software Standby
This bit selects the mode to transit after the execution of
the SLEEP instruction.
0: a transition is made to the sleep mode
1: a transition is made to the standby mode.
For details, see table 6-2.
6
STS2
0
R/W
Standby Timer Select 2 to 0
5
STS1
0
R/W
4
STS0
0
R/W
These bits designate the time the CPU and peripheral
modules wait for stable clock operation after exiting from
the standby mode, to the active mode or sleep mode due
to an interrupt. The designation should be made according
to the clock frequency so that the waiting time is at least
10 ms. The relationship between the specified value and
the number of wait states is shown in table 6-1. When an
external clock is to be used, the minimum value (STS2 =
STS1 = STS0 =1) is recommended.
0
−
3to0 −
Reserved
These bits are always read as 0 and cannot be modified.
Table 6-1 Operating Frequency and Waiting Time
STS2 STS1 STS0 Waiting Time
16 MHz 10 MHz 8 MHz
4 MHz
2 MHz
1 MHz
0.5 MHz
0
1
0
0
8,192 states
0.5
0.8
1.0
2.0
4.1
8.1
16.4
1
16,384 states
1.0
1.6
2.0
4.1
8.2
16.4
32.8
1
0
32,768 states
2.0
3.3
4.1
8.2
16.4
32.8
65.5
1
65,536 states
4.1
6.6
8.2
16.4
32.8
65.5
131.1
0
0
131,072 states
8.2
13.1
16.4
32.8
65.5
131.1
262.1
1
1,024 states
0.06
0.10
0.13
0.26
0.51
1.02
2.05
0
128 states
0.00
0.01
0.02
0.03
0.06
0.13
0.26
1
16 states
0.00
0.00
0.00
0.00
0.01
0.02
0.03
1
Note: Time unit is ms
6.1.2
System Control Register 2(SYSCR2)
The SYSCR2 register controls the power-down modes, as well as SYSCR1.
Rev. 1.0, 03/01, page 66 of 280
Bit
Bit Name
Initial Value
R/W
Description
7
SMSEL
0
R/W
Sleep Mode Selection
This bit selects the mode to transit after the execution of a
SLEEP instruction, as well as bit SSBY of SYSCR1.
For details, see table 6-2.
6
−
0
−
Reserved
This bit is always read as 0, and cannot be modieied
5
DTON
0
R/W
Direct Transfer on Flag
This bit selects the mode to transit after the execution of a
SLEEP instruction, as well as bit SSBY of SYSCR1.
For details, see table 6-2.
4
MA2
0
R/W
Active Mode Clock Select 2 to 0
3
MA1
0
R/W
2
MA0
0
R/W
These bits select the operating clock frequency in the
active and sleep modes. The operating clock frequency
changes to the set frequency after the SLEEP instruction
is executed.
0XX: φOSC
100: φOSC/8
101: φOSC/16
110: φOSC/32
111: φOSC/64
1
−
0
−
Reserved
0
−
0
−
These bits are always read as 0, and cannot be modified.
Legend X: Don't care.
6.1.3
Module Standby Control Register 1(MSTCR1)
MSTCR1 allows the on-chip peripheral modules to enter a standby state in module units.
Rev. 1.0, 03/01, page 67 of 280
Bit
Bit Name
Initial Value
R/W
Description
7
−
0
−
Reserved
This bit is always read as 0 and cannot be modified
6
−
0
−
Reserved
This bit is always read as 0 and cannot be modified
5
MSTS3
0
R/W
SCI3 Module Standby
SCI3 enters the standby mode when this bit is set to 1
4
MSTAD
0
R/W
A/D Converter Module Standby
A/D converter enters the standby mode when this bit is set
to 1
3
MSTWD
0
R/W
Watchdog Timer Module Standby
Watchdog timer enters the standby mode when this bit is
set to 1.When the internal oscillator is selected for the
watchdog timer clock, the watchdog timer operates
regardless of the setting of this bit
2
MSTTW
0
R/W
Timer W Module Standby
Timer W enters the standby mode when this bit is set to 1
1
MSTTV
0
R/W
Timer V Module Standby
Timer V enters the standby mode when this bit is set to 1
0
−
0
−
Reserved
This bit is always read as 0 and cannot be modified
6.1.4
Module Standby Control Register 2(MSTCR2)
MSTCR2 allows the on-chip peripheral modules to enter a standby state in module units.
Bit
Bit Name
7to1 −
Initial Value
R/W
Description
0
−
Reserved
These bit are always read as 0 and cannot be modified
0
MSTPWM 0
R/W
PWM Module Standby
PWM enters the standby mode hen this bit is set to 1
Rev. 1.0, 03/01, page 68 of 280
6.2
Mode Transitions and States of the LSI
Figure 6-1 shows the possible transitions among these operating modes. A transition is made from
the program execution state to the program halt state of the program by executing a SLEEP
instruction. Interrupts allow for returning from the program halt state to the program execution
state of the program. A direct transition between the active mode and subactive mode, which are
both program execution states, can be made without halting the program. The operating frequency
can also be changed in the same modes by making a transition directly from active mode to active
mode, and from subactive mode to subactive mode. RES input enables transitions from a mode to
the reset state. Table 6-2 shows the transition conditions of each mode after the SLEEP instruction
is executed and a mode to return by an interrupt. Table 6-3 shows the internal states of the LSI in
each mode.
Reset state
Program halt state
Program execution state
SLEEP
instruction
Direct transition
interrupt
SLEEP
instruction
Sleep mode
Active mode
Standby mode
Interrupt
Program halt state
Interrupt
SLEEP
instruction
Interrupt
Subsleep mode
Notes: 1. To make a transition to another mode by an interrupt, make sure interrupt handling is after the interrupt
is accepted.
2. Details on the mode transition conditions are given in table 6-2.
Figure 6-1 Mode Transition Diagram
Rev. 1.0, 03/01, page 69 of 280
Table 6-2 Transition Mode after the SLEEP Instruction Execution and Interrupt Handling
DTON
SSBY
SMSEL
Transition Mode after SLEEP Transition Mode due to
Instruction Execution
Interrupt
0
0
0
Sleep mode
Active mode
0
1
Sleep mode
Active mode
1
X
Standby mode
Active mode
X
0*
Active mode(direct transition)
—
1
Legend: X : Don’t care.
• When a state transition is performed while SMSEL is 1, timer V, SCI3, and the A/D converter
are reset, and all registers are set to their initial values. To use these functions after entering
active mode, reset the registers.
Table 6-3 Internal State in Each Operating Mode
Function
Active Mode
Sleep Mode
Subsleep Mode
Standby Mode
System clock oscillator
Functioning
Functioning
Halted
Halted
CPU
operations
Instructions
Functioning
Halted
Halted
Halted
Registers
Functioning
Retained
Retained
Retained
RAM
Functioning
Retained
Retained
Retained
IO ports
Functioning
Retained
Retained
Register contents are
retained, but output is the
high-impedance state.
Functioning
Functioning
Functioning
Functioning
WKP5 to WKP0 Functioning
Functioning
Functioning
Functioning
Timer V
Functioning
Functioning
Reset
Reset
Timer W
Functioning
Functioning
Retained
Retained(if internal clock φ
is selected as a count
clock, the counter is
incremented by a subclock)
Watchdog timer Functioning
Functioning
Retained
Retained(functioning if the
internal oscillator is
selected as a count clock)
SCI3
Functioning
Functioning
Reset
A/D converter
Functioning
Functioning
Reset
External
interrupts
Peripheral
functions
IRQ3, IRQ0
Rev. 1.0, 03/01, page 70 of 280
Reset
6.2.1
Sleep Mode
In the sleep mode, CPU operation is halted but the on-chip peripheral modules function at the
clock frequency set by the MA2 to MA0 bits in SYSCR2. CPU register contents are retained.
When an interrupt is requested, the sleep mode is cleared and interrupt exception handling starts.
The sleep mode is not cleared if the I bit of the condition code register (CCR) is set to 1 or the
requested interrupt is disabled in the interrupt enable register. a transition is made to subactive
mode when the bit is 1.
When the RES pin goes low, the CPU goes into the reset state and the sleep mode is cleared.
6.2.2
Standby Mode
In the standby mode, the clock pulse generator stops, so the CPU and on-chip peripheral modules
stop functioning. However, as long as the rated voltage is supplied, the contents of CPU registers,
on-chip RAM, and some on-chip peripheral module registers are retained. On-chip RAM contents
will be retained as long as the voltage set by the RAM data retention voltage is provided. The I/O
ports go to the high-impedance state.
The standby mode is cleared by an interrupt. When an interrupt is requested, the system clock
pulse generator starts. After the time set in bits STS2–STS0 in SYSCR1 has elapsed, and interrupt
exception handling starts. The standby mode is not cleared if the I bit of CCR is set to 1 or the
requested interrupt is disabled in the interrupt enable register.
When the RES pin goes low, the system clock pulse generator starts. Since system clock signals
are supplied to the entire chip as soon as the system clock pulse generator starts functioning, the
RES pin must be kept low until the pulse generator output stabilizes. After the pulse generator
output has stabilized, the CPU starts reset exception handling if the RES pin is driven high.
6.2.3
Subsleep Mode
In the subsleep mode, the system clock oscillator is halted, and operation of the CPU and on-chip
peripheral modules is halted. As long as a required voltage is applied, the contents of CPU
registers, the on-chip RAM, and some registers of the on-chip peripheral modules are retained. I/O
ports keep the same states as before the transition.
The subsleep mode is cleared by an interrupt. When an interrupt is requested, the system clock
oscillator starts to oscillate.
The subsleep mode is cleared and an interrupt exception handling starts when the time set in bits
STS2 to STS0 in SYSCR1 elapses.
The subsleep mode is not cleared if the I bit of CCR is 1 or the interrupt is disabled in the interrupt
enable bit.
Rev. 1.0, 03/01, page 71 of 280
6.3
Operating Frequency in the Active Mode
Operation in the active mode is clocked at the frequency designated by the MA2, to MA0 bits in
SYSCR2. The operating frequency changes to the set frequency after SLEEP instruction
execution.
6.4
Direct Transition
The CPU can execute programs in active mode.The operating freuncy can be changed by making
a transition directly from active mode to active mode. A direct transition can be made by
executing a SLEEP instruction while the DTON bit in SYSCR2 is set to 1. The direct transition
also enables operating frequency modification in the active mode. After the mode transition, direct
transition interrupt exception handling starts.
If the direct transition interrupt is disabled in interrupt enable register 1, a transition is made
instead to the sleep mode. Note that if a direct transition is attempted while the I bit in CCR is set
to 1, the sleep mode will be entered, and the resulting mode cannot be cleared by means of an
interrupt.
6.5
Module Standby Function
The module-standby function can be set to any peripheral module. In the module standby mode,
the clock supply to modules stops to enter the power-down mode. The module standby mode
enables each on-chip peripheral module to enter the standby state by setting a bit that corresponds
to each module in MSTCR1 and MSTCR2 to 1 and cancels the mode by clearing the bit to 0.
Rev. 1.0, 03/01, page 72 of 280
Section 7 ROM
The features of the 20-kbyte (4 kbytes of them are the EIOT control program area) flash memory
built into HD64F3672 are summarized below.
• Programming/erase methods
The flash memory is programmed 128 bytes at a time. Erase is performed in single-block
units. The flash memory is configured as follows: 1 kbyte × 4 blocks, 16 kbytes × 1 block.
To erase the entire flash memory, each block must be erased in turn.
• Reprogramming capability
The flash memory can be reprogrammed up to 100 times.
• On-board programming
On-board programming/erasing can be done in boot mode, in which the boot program built
into the chip is started to erase or program of the entire flash memory. In normal user
program mode, individual blocks can be erased or programmed.
• Automatic bit rate adjustment
For data transfer in boot mode, this LSI's bit rate can be automatically adjusted to match
the transfer bit rate of the host.
• Programming/erasing protection
Sets software protection against flash memory programming/erasing.
• Power-down mode
The power supply circuit is partly halted in the subactive mode and can be read in the
power-down mode.
7.1
Block Configuration
Figure 7-1 shows the block configuration of 16-kbyte flash memory. The thick lines indicate
erasing units, the narrow lines indicate programming units, and the values are addresses. The
flash memory is divided into 1 kbyte × 4 blocks and 16 kbytes × 1 block. Erasing is performed in
these units. Programming is performed in 128-byte units starting from an address with lower eight
bits H'00 or H'80.
Rev. 1.0, 03/01, page 73 of 280
Erase unit
H'0000
H'0001
H'0002
H'0080
H'0081
H'0082
H'00FF
H'0380
H'0381
H'0382
H'03FF
H'0400
H'0401
H'0402
H'0480
H'0481
H'0481
H'0780
H'0781
H'0782
H'0800
H'0801
H'0802
H'0880
H'0881
H'0882
H'0B80
H'0B81
H'0B82
H'0C00
H'0C01
H'0C02
H'0C80
H'0C81
H'0C82
H'0F80
H'0F81
H'0F82
H'1000
H'1001
H'1002
H'1080
H'1081
H'1082
H'10FF
H'4F80
H'4F81
H'4F82
H'4FFF
Programming unit: 128 bytes
H'007F
1kbyte
Erase unit
Programming unit: 128 bytes
H'047F
H'04FF
1kbyte
Erase unit
H'07FF
Programming unit: 128 bytes
H'087F
H'08FF
1kbyte
Erase unit
H'0BFF
Programming unit: 128 bytes
H'0C7F
H'0CFF
1kbyte
Erase unit
H'0FFF
Programming unit: 128 bytes
H'107F
16 kbytes
Figure 7-1 Flash Memory Block Configuration
7.2
Register Descriptions
The flash memory has the following registers. For details on register addresses and register states
during each processing, refer to appendix B, Internal I/O Register.
• Flash memory control register 1 (FLMCR1)
• Flash memory control register 2 (FLMCR2)
• Erase block register 1 (EBR1)
• Flash memory enable register (FENR)
Rev. 1.0, 03/01, page 74 of 280
7.2.1
Flash Memory Control Register 1 (FLMCR1)
FLMCR1 is a register that makes the flash memory change to program mode, program-verify
mode, erase mode, or erase-verify mode. For details on register setting, refer to section 7.4, Flash
Memory Programming/Erasing.
Bit
Bit Name
Initial Value
R/W
Description
7
—
0
—
Reserved
This bit is always read as 0 and cannot be modified.
6
SWE
0
R/W
Software Write Enable
When this bit is set to 1, flash memory
programming/erasing is enabled. When this bit is
cleared to 0, other FLMCR1 register bits and all
EBR1 bits cannot be set.
5
ESU
0
R/W
Erase Setup
When this bit is set to 1, the flash memory changes to
the erase setup state. When it is cleared to 0, the
erase setup state is cancelled. Set this bit to 1 before
setting the E bit to 1 in FLMCR1.
4
PSU
0
R/W
Program Setup
When this bit is set to 1, the flash memory changes to
the program setup state. When it is cleared to 0, the
program setup state is cancelled. Set this bit to 1
before setting the P bit in FLMCR1.
3
EV
0
R/W
Erase-Verify
When this bit is set to 1, the flash memory changes to
erase-verify mode. When it is cleared to 0, eraseverify mode is cancelled.
2
PV
0
R/W
Program-Verify
When this bit is set to 1, the flash memory changes to
program-verify mode. When it is cleared to 0,
program-verify mode is cancelled.
1
E
0
R/W
Erase
When this bit is set to 1, and while the SWE=1 and
ESU=1 bits are 1, the flash memory changes to erase
mode. When it is cleared to 0, erase mode is
cancelled.
0
P
0
R/W
Program
When this bit is set to 1, and while the SWE=1 and
PSU=1 bits are 1, the flash memory changes to
program mode. When it is cleared to 0, program
mode is cancelled.
Rev. 1.0, 03/01, page 75 of 280
7.2.2
Flash Memory Control Register 2 (FLMCR2)
FLMCR2 is a register that displays the state of flash memory programming/erasing. FLMCR2 is a
read-only register, and should not be written to.
Bit
Bit Name
Initial Value
R/W
Description
7
FLER
0
R
Flash Memory Error
Indicates that an error has occurred during an
operation on flash memory (programming or erasing).
When FLER is set to 1, flash memory goes to the
error-protection state.
See 7.5.3, Error Protection, for details.
6
5
4
3
2
1
0
—
—
—
—
—
—
—
7.2.3
0
0
0
0
0
0
0
—
—
—
—
—
—
—
Reserved
These bits are always read as 0 and cannot be
modified.
Erase Block Register 1 (EBR1)
EBR1 specifies the flash memory erase area block. EBR1 is initialized to H'00 when the SWE bit
in FLMCR1 is 0. Do not set more than one bit at a time, as this will cause all the bits in EBR1 to
be automatically cleared to 0.
Bit
Bit Name
Initial Value
R/W
Description
7
6
5
—
—
—
0
0
0
—
—
—
Reserved
4
EB4
0
R/W
When this bit is set to 1, 16 kbytes of H'1000 to
H'4FFF will be erased.
3
EB3
0
R/W
When this bit is set to 1, 1 kbyte of H'0C00 to H'0FFF
will be erased.
2
EB2
0
R/W
When this bit is set to 1, 1 kbyte of H'0800 to H'0BFF
will be erased.
1
EB1
0
R/W
When this bit is set to 1, 1 kbyte of H'0400 to H'07FF
will be erased.
0
EB0
0
R/W
When this bit is set to 1, 1 kbyte of H'0000 to H'03FF
will be erased.
Rev. 1.0, 03/01, page 76 of 280
These bits are always read as 0 and cannot be
modified.
7.2.4
Flash Memory Enable Register(FENR)
FENR controls CPU access to the flash memory control registers, FLMCR1, FLMCR2, EBR1,
and FLPWCR.
Bit
Bit Name Initial Value
R/W
Description
7
FLSHE
R/W
Flash Memory Control Register Enable
0
Flash memory control registers can be accessed when this
bit is set to 1. Flash memory control registers cannot be
accessed when this bit is set to 0.
6
—
0
—
Reserved
5
—
0
—
These bits are always read as 0 and cannot be modified.
4
—
0
—
3
—
0
—
2
—
0
—
1
—
0
—
0
—
0
—
7.3
On-Board Programming Modes
There is a modes for programming/erasing of the flash memory; boot mode, which enables onboard programming/erasing, On-board programming/erasing can also be performed in user
program mode. At reset-start in reset mode, the series of HD64F3672 changes to a mode
depending on the TEST pin settings, NMI pin settings, and input level of each port, as shown in
table 7-1. The input level of each pin must be defined four states before the reset ends.
When changing to boot mode, the boot program built into this LSI is initiated. The boot program
transfers the programming control program from the externally-connected host to on-chip RAM
via SCI3. After erasing the entire flash memory, the programming control program is executed.
This can be used for programming initial values in the on-board state or for a forcible return when
programming/erasing can no longer be done in user program mode. In user program mode,
individual blocks can be erased and programmed by branching to the user program/erase control
program prepared by the user.
Table 7-1 Setting Programming Modes
TEST
NMI
EIOT_0
PB0
PB1
PB2
LSI State after Reset End
0
1
X
X
X
X
User Mode
0
0
1
X
X
X
Boot Mode
Legend: X:Don’t care.
Rev. 1.0, 03/01, page 77 of 280
7.3.1
Boot Mode
Table 7-2 shows the boot mode operations between reset end and branching to the programming
control program.
1. When boot mode is used, the flash memory programming control program must be prepared in
the host beforehand. Prepare a programming control program in accordance with the
description in section 7.4, Flash Memory Programming/Erasing.
2. SCI3 should be set to asynchronous mode, and the transfer format as follows: 8-bit data, 1 stop
bit, and no parity.
3. When the boot program is initiated, the chip measures the low-level period of asynchronous
SCI communication data (H'00) transmitted continuously from the host. The chip then
calculates the bit rate of transmission from the host, and adjusts the SCI3 bit rate to match that
of the host. The reset should end with the RxD pin high. The RxD and TxD pins should be
pulled up on the board if necessary. After the reset is complete, it takes approximately 100
states before the chip is ready to measure the low-level period.
4. After matching the bit rates, the chip transmits one H'00 byte to the host to indicate the
completion of bit rate adjustment. The host should confirm that this adjustment end indication
(H'00) has been received normally, and transmit one H'55 byte to the chip. If reception could
not be performed normally, initiate boot mode again by a reset. Depending on the host's
transfer bit rate and system clock frequency of this LSI, there will be a discrepancy between
the bit rates of the host and the chip. To operate the SCI properly, set the host's transfer bit
rate and system clock frequency of this LSI within the ranges listed in table 7-3.
5. In boot mode, a part of the on-chip RAM area is used by the boot program. The area H'F780 to
H'FEEF is the area to which the programming control program is transferred from the host.
The boot program area cannot be used until the execution state in boot mode switches to the
programming control program.
6. Before branching to the programming control program, the chip terminates transfer operations
by SCI3 (by clearing the RE and TE bits in SCR3 to 0), however the adjusted bit rate value
remains set in BRR. Therefore, the programming control program can still use it for transfer
of write data or verify data with the host. The TxD pin is high(PCR22=1, P22=1). The
contents of the CPU general registers are undefined immediately after branching to the
programming control program. These registers must be initialized at the beginning of the
programming control program, as the stack pointer (SP), in particular, is used implicitly in
subroutine calls, etc.
7. Boot mode can be cleared by a reset. End the reset after driving the reset pin low, waiting at
least 20 states, and then setting the TEST pin and NMI pin. Boot mode is also cleared when a
WDT overflow occurs.
8.
Do not change the TEST pin and NMI pin input levels in boot mode.
Rev. 1.0, 03/01, page 78 of 280
Table 7-2 Boot Mode Operation
Item
Host Operation
Processing Contents
Bit rate
adjustment
Continuously transmits data H'00 at
specified bit rate.
LSI Operation
Processing Contents
Branches to boot program at reset-start.
· Measures low-level period of receive data H'00.
· Calculates bit rate and sets it in BRR of SCI3.
· Transmits data H'00 to the host to indicate that the
adjustment has ended.
Transmits data H'55 when data H'00
is received and no error occurs.
Transmits 1-byte data H'AA to the host when data
H'55 is received.
Transfer of
programming control
program
Transfer of
programming control
program (repeated for
N times)
Transmits number of bytes (N) of
programming control program to be
transferred as 2-byte data (low-order
byte following high-order byte)
Transmits 1-byte of programming
control program
Echobacks the 2-byte received data to host.
Echobacks received data to host and also
transfers it to RAM.
Flash memory erase
Checks flash memory data, erases all flash memory
blocks in case of written data existing, and transmits
data H'AA to host. (If erase could not be done,
transmits data H'FF to host and aborts operation.)
Execution of
Programming
control program
Branches to programming control program
transferred to on-chip RAM and starts execution.
Table 7-3 System Clock Frequencies for which Automatic Adjustment of LSI Bit Rate is
Possible
Host Bit Rate
System Clock Frequency Range of LSI
19,200 bps
16MHz
9,600 bps
8 to 16 MHz
4,800 bps
4 to 16 MHz
2,400 bps
2 to 16 MHz
Rev. 1.0, 03/01, page 79 of 280
7.3.2
Programming/Erasing in User Program Mode
On-board programming/erasing of an individual flash memory block can also be performed in user
program mode by branching to a user program/erase control program. The user must set branching
conditions and provide on-board means of supplying programming data. The flash memory must
contain the user program/erase control program or a program that provides the user program/erase
control program from external memory. As the flash memory itself cannot be read during
programming/erasing, transfer the user program/erase control program to on-chip RAM, as in boot
mode. Figure 7-2 shows a sample procedure for programming/erasing in user program mode.
Prepare a user program/erase control program in accordance with the description in section 7.4,
Flash Memory Programming/Erasing.
Reset-start
No
Program/erase?
Yes
Transfer user program/erase control
program to RAM
Branch to flash memory application
program
Branch to user program/erase control
program in RAM
Execute user program/erase control
program (flash memory rewrite)
Branch to flash memory application
program
Figure 7-2 Programming/Erasing Flowchart Example in User Program Mode
Rev. 1.0, 03/01, page 80 of 280
7.4
Flash Memory Programming/Erasing
A software method using the CPU is employed to program and erase flash memory in the onboard programming modes. Depending on the FLMCR1 setting, the flash memory operates in one
of the following four modes: Program mode, program-verify mode, erase mode, and erase-verify
mode. The programming control program in boot mode and the user program/erase control
program in user program mode use these operating modes in combination to perform
programming/erasing. Flash memory programming and erasing should be performed in
accordance with the descriptions in section 7.4.1, Program/Program-Verify and section 7.4.2,
Erase/Erase-Verify, respectively.
7.4.1
Program/Program-Verify
When writing data or programs to the flash memory, the program/program-verify flowchart shown
in Figure 7-3 should be followed. Performing programming operations according to this flowchart
will enable data or programs to be written to the flash memory without subjecting the chip to
voltage stress or sacrificing program data reliability.
1. Programming must be done to an empty address. Do not reprogram an address to which
programming has already been performed.
2. Programming should be carried out 128 bytes at a time. A 128-byte data transfer must be
performed even if writing fewer than 128 bytes. In this case, H'FF data must be written to the
extra addresses.
3. Prepare the following data storage areas in RAM: A 128-byte programming data area, a 128byte reprogramming data area, and a 128-byte additional-programming data area. Perform
reprogramming data computation according to table 7-4, and additional programming data
computation according to table 7-5.
4. Consecutively transfer 128 bytes of data in byte units from the reprogramming data area or
additional-programming data area to the flash memory. The program address and 128-byte
data are latched in the flash memory. The lower 8 bits of the start address in the flash memory
destination area must be H'00 or H'80.
5. The time during which the P bit is set to 1 is the programming time. Figure 7-6 shows the
allowable programming times.
6. The watchdog timer (WDT) is set to prevent overprogramming due to program runaway, etc.
An overflow cycle of approximately 6.6 ms is allowed.
7.
For a dummy write to a verify address, write 1-byte data H'FF to an address whose lower 2
bits are B'00. Verify data can be read in longwords from the address to which a dummy write
was performed.
8.
The maximum number of repetitions of the program/program-verify sequence of the same bit
is 1,000.
Rev. 1.0, 03/01, page 81 of 280
Write pulse application subroutine
START
Apply Write Pulse
Set SWE bit in FLMCR1
WDT enable
Wait 1 µs
Set PSU bit in FLMCR1
Store 128-byte program data in program
data area and reprogram data area
Wait 50 µs
n= 1
Set P bit in FLMCR1
m= 0
Wait (Wait time=programming time)
Write 128-byte data in RAM reprogram
data area consecutively to flash memory
Clear P bit in FLMCR1
Wait 5 µs
Apply Write pulse
Clear PSU bit in FLMCR1
Set PV bit in FLMCR1
Wait 4 µs
Wait 5 µs
Disable WDT
Set block start address as
verify address
End Sub
H'FF dummy write to verify address
n←n+1
Wait 2 µs
Read verify data
Increment address
No
Verify data =
write data?
m=1
Yes
n≤6?
No
Yes
Additional-programming data computation
Reprogram data computation
128-byte
data verification completed?
No
Yes
Clear PV bit in FLMCR1
Wait 2 µs
n ≤ 6?
No
Yes
Successively write 128-byte data from additionalprogramming data area in RAM to flash memory
Sub-Routine-Call
Apply Write Pulse
m= 0 ?
No
Yes
Clear SWE bit in FLMCR1
n ≤ 1000 ?
Yes
No
Clear SWE bit in FLMCR1
Wait 100 µs
Wait 100 µs
End of programming
Programming failure
Figure 7-3 Program/Program-Verify Flowchart
Table 7-4 Reprogram Data Computation Table
Program Data
Verify Data
Reprogram Data
Comments
0
0
1
Programming completed
0
1
0
Reprogram bit
1
0
1
—
1
1
1
Remains in erased state
Rev. 1.0, 03/01, page 82 of 280
Table 7-5 Additional-Program Data Computation Table
Reprogram Data
Verify Data
Additional-Program
Data
Comments
0
0
0
Additional-program bit
0
1
1
No additional programming
1
0
1
No additional programming
1
1
1
No additional programming
n
Programming
(Number of Writes) Time
In Additional
Programming
Comments
1 to 6
30
10
7 to 1,000
200
—
Table 7-6 Programming Time
Note: Time shown in µs.
Rev. 1.0, 03/01, page 83 of 280
7.4.2
Erase/Erase-Verify
When erasing flash memory, the erase/erase-verify flowchart shown in figure 7-4 should be
followed.
1. Prewriting (setting erase block data to all 0s) is not necessary.
2. Erasing is performed in block units. Make only a single-bit specification in the erase block
register (EBR1). To erase multiple blocks, each block must be erased in turn.
3. The time during which the E bit is set to 1 is the flash memory erase time.
4. The watchdog timer (WDT) is set to prevent overerasing due to program runaway, etc. An
overflow cycle of approximately 19.8 ms is allowed.
5. For a dummy write to a verify address, write 1-byte data H'FF to an address whose lower two
bits are B'00. Verify data can be read in longwords from the address to which a dummy write
was performed.
6. If the read data is not erased erased successfully, set erase mode again, and repeat the
erase/erase-verify sequence as before. The maximum number of repetitions of the erase/eraseverify sequence is 100.
7.4.3
Interrupt Handling when Programming/Erasing Flash Memory
All interrupts, including the NMI interrupt, are disabled while flash memory is being programmed
or erased, or while the boot program is executing, for the following three reasons:
1. Interrupt during programming/erasing may cause a violation of the programming or erasing
algorithm, with the result that normal operation cannot be assured.
2. If interrupt exception handling starts before the vector address is written or during
programming/erasing, a correct vector cannot be fetched and the CPU malfunctions.
3. If an interrupt occurs during boot program execution, normal boot mode sequence cannot be
carried out.
Rev. 1.0, 03/01, page 84 of 280
Erase start
SWE bit ← 1
Wait 1 µs
n←1
Set EBR1
Enable WDT
ESU bit ← 1
Wait 100 µs
E bit ← 1
Wait 10 µs
E bit ← 0
Wait 10 µs
ESU bit ← 10
10 µs
Disable WDT
EV bit ← 1
Wait 20 µs
Set block start address as verify address
H'FF dummy write to verify address
Wait 2 µs
n←n+1
Read verify data
No
Verify data + all 1s ?
Increment address
Yes
No
Last address of block ?
Yes
No
EV bit ← 0
EV bit ← 0
Wait 4 µs
Wait 4µs
All erase block erased ?
n ≤100 ?
Yes
Yes
No
Yes
SWE bit ← 0
SWE bit ← 0
Wait 100 µs
Wait 100 µs
End of erasing
Erase failure
Figure 7-4 Erase/Erase-Verify Flowchart
Rev. 1.0, 03/01, page 85 of 280
7.5
Program/Erase Protection
There are three kinds of flash memory program/erase protection; hardware protection, software
protection, and error protection.
7.5.1
Hardware Protection
Hardware protection refers to a state in which programming/erasing of flash memory is forcibly
disabled or aborted because of a transition to reset, subsleep mode or standby mode. Flash
memory control register 1 (FLMCR1), flash memory control register 2 (FLMCR2), and erase
block register 1 (EBR1) are initialized. In a reset via the RES pin, the reset state is not entered
unless the RES pin is held low until oscillation stabilizes after powering on. In the case of a reset
during operation, hold the RES pin low for the RES pulse width specified in the AC
Characteristics section.
7.5.2
Software Protection
Software protection can be implemented against programming/erasing of all flash memory blocks
by clearing the SWE bit in FLMCR1. When software protection is in effect, setting the P or E bit
in FLMCR1 does not cause a transition to program mode or erase mode. By setting the erase
block register 1 (EBR1), erase protection can be set for individual blocks. When EBR1 is set to
H'00, erase protection is set for all blocks.
7.5.3
Error Protection
In error protection, an error is detected when CPU runaway occurs during flash memory
programming/erasing, or operation is not performed in accordance with the program/erase
algorithm, and the program/erase operation is aborted. Aborting the program/erase operation
prevents damage to the flash memory due to overprogramming or overerasing.
When the following errors are detected during programming/erasing of flash memory, the FLER
bit in FLMCR2 is set to 1, and the error protection state is entered.
• When the flash memory of the relevant address area is read during programming/erasing
(including vector read and instruction fetch)
• Immediately after exception handling excluding a reset during programming/erasing
• When a SLEEP instruction is executed during programming/erasing
The FLMCR1, FLMCR2, and EBR1 settings are retained, however program mode or erase mode
is aborted at the point at which the error occurred. Program mode or erase mode cannot be reentered by re-setting the P or E bit. However, PV and EV bit setting is enabled, and a transition
can be made to verify mode. Error protection can be cleared only by a power-on reset.
Rev. 1.0, 03/01, page 86 of 280
Section 8 RAM
This LSI has 2 kbyte of on-chip high-speed static RAM. The RAM is connected to the CPU by a
16-bit data bus, enabling two-state access by the CPU to both byte data and word data.
Rev. 1.0, 03/01, page 87 of 280
Rev. 1.0, 03/01, page 88 of 280
Section 9 I/O Ports
The series of this LSI has twenty-six general I/O ports and four input-only ports. Port 8 is a large
current port, which can drive 20 mA (@VOL = 1.5 V) when a low level signal is output. Any of
these ports can become an input port immediately after a reset. They can also be used as I/O pins
of the on-chip peripheral modules or external interrupt input pins, and these functions can be
switched depending on the register settings. The registers for selecting these functions can be
divided into two types: those included in I/O ports and those included in each on-chip peripheral
module. General I/O registers are comprised of the port control register for controlling
inputs/outputs and the port data register for storing output data and can select inputs/outputs in bit
units. For functions in each port, see appendix C.1, I/O Port Block Diagrams. For the execution of
bit manipulation instructions to the port control register and port data register, see 2.8.3, Bit
Manipulation Instruction.
9.1
Port 1
Port 1 is a general I/O port also functioning as IRQ interrupt input pins, output pin, and a timer V
input pin. Figure 9-1 shows its pin configuration.
P17/
/TRGV
P16
P15
Port 1
P14/
P12
P11
P10
Figure 9-1 Port 1 Pin Configuration
Port 1 has the following registers. For details on register addresses and register states during each
process, refer to appendix B, Internal I/O Register.
• Port mode register 1(PMR1)
• Port control register 1(PCR1)
• Port data register 1(PDR1)
• Port pull-up control register 1(PUCR1)
Rev. 1.0, 03/01, page 89 of 280
9.1.1
Port Mode Register 1(PMR1)
PMR1 switches the functions of pins in port 1 and port 2.
Bit
Bit Name
Initial Value R/W
Description
7
IRQ3
0
P17/IRQ3/TRGV Pin Function Switch
R/W
This bit selects whether pin P17/IRQ3/TRGV is used as
P17 or as IRQ3/TRGV.
0: P17 I/O port
1: IRQ3/TRGV input pin
6
−
0
−
Reserved
5
−
0
−
These bits are always read as 0, and cannot be modified.
4
IRQ0
0
R/W
P14/IRQ0 Pin Function Switch
This bit selects whether pin P14/IRQ0 is used as P14 or as
IRQ0.
0: P14 I/O port
1: IRQ0 input pin
3
−
1
−
2
−
0
−
Reserved
This bit is always read as 1 and cannnot be modified.
Reserved
This bit must always be cleared to 0 (setting to 1 is
disabled).
1
TXD
0
R/W
P22/TXD Pin Function Switch
This bit selects whether pin P22/TXD is used as P22 or as
TXD.
0: P22 I/O port
1: TXD output pin
0
−
0
−
Reserved
These bits are always read as 0, and cannot be modified.
Rev. 1.0, 03/01, page 90 of 280
9.1.2
Port Control Register 1(PCR1)
PCR1 selects inputs/outputs in bit units for pins to be used as general I/O ports of port 1.
Bit
Bit Name
Initial Value R/W
Description
7
PCR17
0
W
6
PCR16
0
W
5
PCR15
0
W
When the corresponding pin is designated in PMR1 as a
general I/O pin, setting a PCR1 bit to 1 makes the
corresponding pin an output port, while clearing the bit to 0
makes the pin an input port.
4
PCR14
0
W
Bit 3 is a reserved bit.
3
−
−
−
2
PCR12
0
W
1
PCR11
0
W
0
PCR10
0
W
9.1.3
Port Data Register 1(PDR1)
PDR1 is a general I/O port data register of port 1.
Bit
Bit Name
Initial Value R/W
Description
7
P17
0
R/W
PDR1 stores output data for port 1 pins.
6
P16
0
R/W
5
P15
0
R/W
4
P14
0
R/W
If PDR1 is read while PCR1 bits are set to 1, the value
stored in PDR1 are read. If PDR1 is read while PCR1 bits
are cleared to 0, the pin states are read regardless of the
value stored in PDR1.
3
−
1
−
2
P12
0
R/W
1
P11
0
R/W
0
P10
0
R/W
Bit 3 is a reserved bit. This bit is always read as 1 and
cannot be modified.
Rev. 1.0, 03/01, page 91 of 280
9.1.4
Port Pull-Up Control Register 1(PUCR1)
PUCR1 controls the pull-up MOS in bit units of the pins set as the input ports.
Bit
Bit Name
Initial Value
R/W
Description
7
PUCR17
0
R/W
6
PUCR16
0
R/W
5
PUCR15
0
R/W
Only bits for which PCR1 is cleared are valid. The pull-up
MOS of P17 to P14 and P12 to P10 pins enter the onstate when these bits are set to 1, while they enter the offstate when these bits are cleared to 0.
4
PUCR14
0
R/W
3
−
1
−
2
PUCR12
0
R/W
1
PUCR11
0
R/W
0
PUCR10
0
R/W
9.1.5
Bit 3 is a reserved bit. This bit is always read as 1 and
cannot be modified.
Pin Functions
The correspondence between the register specification and the port functions is shown below.
P17/IRQ3/TRGV pin
Register
PMR1
PCR1
Bit Name
IRQ3
PCR17
Pin Function
0
P17 input pin
Setting value 0
0
1
P17 output pin
1
X
IRQ3 input/TRGV input pin
Legend X: Don't care.
P16 pin
Register
PCR1
Bit Name
PCR16
Pin Function
Setting value
0
P16 input pin
1
P16 output pin
Rev. 1.0, 03/01, page 92 of 280
P15 pin
Register
PCR1
Bit Name
PCR15
Pin Function
Setting value
0
P15 input pin
1
P15 output pin
P14/IRQ0 pin
Register
PMR1
PCR1
Bit Name
IRQ0
PCR14
Pin Function
Setting value 0
0
P14 input pin
0
1
P14 output pin
1
X
IRQ0 input pin
Legend X: Don't care.
P12 pin
Register
PCR1
Bit Name
PCR12
Setting value 0
Pin Function
P12 input pin
1
P12 output pin
P11 pin
Register
PCR1
Bit Name
PCR11
Setting value 0
Pin Function
P11 input pin
1
P11 output pin
P10 pin
Register
PCR1
Bit Name
PCR10
Pin Function
Setting value
0
P10 input pin
1
P10 output pin
Rev. 1.0, 03/01, page 93 of 280
9.2
Port 2
Port 2 is a general I/O port also functioning as a SCI3 I/O pin. Each pin of the port 2 is shown in
figure 9-2. The register settings of PMR1 and SCI3 have priority for functions of the pins for both
uses.
P22/TXD
Port 2
P21/RXD
P20/SCK3
Figure 9-2 Port 2 Pin Configuration
Port 2 has the following registers. For details on register addresses and register states during each
process, refer to appendix B, Internal I/O Registers.
• Port control register 2(PCR2)
• Port data register 2(PDR2)
9.2.1
Port Control Register 2(PCR2)
PCR2 selects inputs/outputs in bit units for pins to be used as general I/O ports of port 2.
Bit
Bit Name
Initial Value R/W
Description
7
−
−
−
Reserved
6
−
−
−
5
−
−
−
4
−
−
−
3
−
−
−
2
PCR22
0
W
1
PCR21
0
W
0
PCR20
0
W
Rev. 1.0, 03/01, page 94 of 280
When each of the port 2 pins P22 to P20 functions as an
general I/O port, setting a PCR2 bit to 1 makes the
corresponding pin an output port, while clearing the bit to 0
makes the pin an input port.
9.2.2
Port Data Register 2(PDR2)
PDR2 is a general I/O port data register of port 2.
Bit
Bit Name
Initial Value R/W
7
−
1
−
Reserved
6
−
1
−
These bits are always read as 1 and cannot be modified.
5
−
1
−
4
−
1
−
3
−
1
−
2
P22
0
R/W
PDR2 stores output data for port 2 pins.
1
P21
0
R/W
0
P20
0
R/W
PDR2 is read while PCR2 bits are set to 1, the value stored
in PDR2 is read. If PDR2 is read while PCR2 bits are
cleared to 0, the pin states are read regardless of the value
stored in PDR2.
9.2.3
Description
Pin Functions
The correspondence between the register specification and the port functions is shown below.
P22/TXD pin
Register
PMR1
PCR2
Bit Name
TXD
PCR22
Pin Function
Setting Value 0
0
P22 input pin
0
1
P22 output pin
1
X
TXD output pin
Legend X:Don't care.
P21/RXD pin
Register
SCR3
PCR2
Bit Name
RE
PCR21
Pin Function
Setting Value 0
0
P21 input pin
0
1
P21 output pin
1
X
RXD input pin
Legend X:Don't care.
Rev. 1.0, 03/01, page 95 of 280
P20/SCK3 pin
Register
SCR3
SMR
PCR2
Bit Name
CKE1
CKE0
COM
PCR20
Pin Function
Setting Value
0
0
0
0
P20 input pin
0
0
0
1
P20 output pin
0
0
1
X
SCK3 output pin
0
1
X
X
SCK3 output pin
1
X
X
X
SCK3 input pin
Legend X:Don't care.
9.3
Port 5
Port 5 is a general I/O port also functioning as an A/D trigger input pin and wakeup interrupt input
pin. Each pin of the port 5 is shown in figure 9-3.
P57
P56
P55/
Port 5
/
P54/
P53/
P52/
P51/
P50/
Figure 9-3 Port 5 Pin Configuration
Port 5 has the following registers. For details on register addresses and register states during each
process, refer to appendix B, Internal I/O Register.
• Port mode register 5(PMR5)
• Port control register 5(PCR5)
• Port data register 5(PDR5)
• Port pull-up control register 5(PUCR5)
Rev. 1.0, 03/01, page 96 of 280
9.3.1
Port Mode Register 5(PMR5)
PMR5 switches the functions of pins in port 5.
Bit
Bit Name Initial Value R/W Description
7
POF7
0
R/W P57 Pin Function Switch
0: P57 I/O port
1: NMOS open-drain output
6
POF6
0
R/W P56 Pin Function Switch
0: P56 I/O port
1: NMOS open-drain output
5
WKP5
0
R/W P55/WKP5/ ADTRG Pin Function Switch
Selects whether pin P55/WKP5 is used as P55 or as
WKP5/ADTRG input.
0: P55 I/O port
1: WKP5/ADTRG input pin
4
WKP4
0
R/W P54/WKP4 Pin Function Switch
Selects whether pin P54/WKP4 is used as P54 or as WKP4.
0: P54 I/O port
1: WKP4 input pin
3
WKP3
0
R/W P53/WKP3 Pin Function Switch
Selects whether pin P53/WKP3 is used as P53 or as WKP3.
0: P53 I/O port
1: WKP3 input pin
2
WKP2
0
R/W P52/WKP2 Pin Function Switch
Selects whether pin P52/WKP2 is used as P52 or as WKP2.
0: P52 I/O port
1: WKP2 input pin
1
WKP1
0
R/W P51/WKP1 Pin Function Switch
Selects whether pin P51/WKP1 is used as P51 or as WKP1.
0: P51 I/O port
1: WKP1 input pin
0
WKP0
0
R/W P50/WKP0 Pin Function Switch
Selects whether pin P50/WKP0 is used as P50 or as WKP0.
0: P50 I/O port
1: WKP0 input pin
Rev. 1.0, 03/01, page 97 of 280
9.3.2
Port Control Register 5(PCR5)
PCR5 selects inputs/outputs in bit units for pins to be used as general I/O ports of port 5.
Bit
Bit Name
Initial Value R/W
Description
7
PCR57
0
W
6
PCR56
0
W
5
PCR55
0
W
When each of the port 5 pins P57 to P50 functions as an
general I/O port, setting a PCR5 bit to 1 makes the
corresponding pin an output port, while clearing the bit to 0
makes the pin an input port.
4
PCR54
0
W
3
PCR53
0
W
2
PCR52
0
W
1
PCR51
0
W
0
PCR50
0
W
9.3.3
Port Data Register 5(PDR5)
PDR5 is a general I/O port data register of port 5.
Bit
Bit Name
Initial Value R/W
Description
7
P57
0
R/W
Stores output data for port 5 pins.
6
P56
0
R/W
5
P55
0
R/W
4
P54
0
R/W
If PDR5 is read while PCR5 bits are set to 1, the value
stored in PDR5 are read. If PDR5 is read while PCR5 bits
are cleared to 0, the pin states are read regardless of the
value stored in PDR5.
3
P53
0
R/W
2
P52
0
R/W
1
P51
0
R/W
0
P50
0
R/W
Rev. 1.0, 03/01, page 98 of 280
9.3.4
Port Pull-up Control Register 5(PUCR5)
PUCR5 controls the pull-up MOS in bit units of the pins set as the input ports.
Bit Bit Name
Initial Value
R/W
Description
7
−
0
−
Reserved
6
−
0
−
These bits are always read as 0 and cannot be modified.
5
PUCR55
0
R/W
4
PUCR54
0
R/W
3
PUCR53
0
R/W
Only bits for which PCR5 is cleared are valid. The pull-up
MOS of the corresponding pins enter the on-state when
these bits are set to 1, while they enter the off-state when
these bits are cleared to 0.
2
PUCR52
0
R/W
1
PUCR51
0
R/W
0
PUCR50
0
R/W
9.3.5
Pin Functions
The correspondence between the register specification and the port functions is shown below.
P57 pin
Register
PMR5
PCR5
Bit Name
POF7
PCR57
Pin Function
Setting Value X
0
P57 input pin
0
1
CMOS output
1
1
NMOS open-drain output
Legend X: Don't care.
P56 pin
Register
PMR5
PCR5
Bit Name
POF6
PCR56
Pin Function
Setting Value X
0
P56 input pin
0
1
CMOS output
1
1
NMOS open-drain output
Legend X: Don't care.
Rev. 1.0, 03/01, page 99 of 280
P55/WKP5/ADTRG pin
Register
PMR5
PCR5
Bit Name
WKP5
PCR55
Pin Function
0
P55 input pin
Setting Value 0
0
1
P55 output pin
1
X
WKP5/ADTRG input pin
Legend X: Don't care.
P54/WKP4 pin
Register
PMR5
PCR5
Bit Name
WKP4
PCR54
Pin Function
Setting Value 0
0
P54 input pin
0
1
P54 output pin
1
X
WKP4 input pin
Legend X: Don't care.
P53/WKP3 pin
Register
PMR5
PCR5
Bit Name
WKP3
PCR53
Pin Function
0
P53 input pin
Setting Value 0
0
1
P53 output pin
1
X
WKP3 input pin
Legend X: Don't care.
P52/WKP2 pin
Register
PMR5
PCR5
Bit Name
WKP2
PCR52
Pin Function
Setting Value 0
0
P52 input pin
0
1
P52 output pin
1
X
WKP2 input pin
Legend X: Don't care.
Rev. 1.0, 03/01, page 100 of 280
P51/WKP1 pin
Register
PMR5
PCR5
Bit Name
WKP1
PCR51
Pin Function
Setting Value 0
0
P51 input pin
0
1
P51 output pin
1
X
WKP1 input pin
Legend X: Don't care.
P50/WKP0 pin
Register
PMR5
PCR5
Bit Name
WKP0
PCR50
Pin Function
Setting Value 0
0
P50 input pin
0
1
P50 output pin
1
X
WKP0 input pin
Legend X: Don't care.
9.4
Port 7
Port 7 is a general I/O port also functioning as a Timer V I/O pin. Each pin of the port 7 is shown
in figure 9-4. The register setting of TCSRV in timer V has priority for functions of pin
P76/TMOV. The pins, P75/TMCIV and P74/TMRIV, are also functioning as timer V input ports
that are connected to the timer V regardless of the register setting of port 7.
P76/TMOV
Port 7
P75/TMCIV
P74/TMRIV
Figure 9-4 Port 7 Pin Configuration
Port 7 has the following registers. For details on register addresses and register states during each
process, refer to appendix B, Internal I/O Registers.
• Port control register 7(PCR7)
• Port data register 7(PDR7)
Rev. 1.0, 03/01, page 101 of 280
9.4.1
Port Control Register 7(PCR7)
PCR7 selects inputs/outputs in bit units for pins to be used as general I/O ports of port 7.
Bit
Bit Name
Initial Value R/W
Description
7
−
−
−
Reserved
6
PCR76
0
W
5
PCR75
0
W
4
PCR74
0
W
Setting a PCR7 bit to 1 makes the corresponding pin an
output port, while clearing the bit to 0 makes the pin an
input port. Note that the TCSRV setting of the timer V has
priority for deciding input/output direction of the P76/TMOV
pin.
3
−
−
−
2
−
−
−
1
−
−
−
0
−
−
−
9.4.2
Reserved
Port Data Register 7(PDR7)
PDR7 is a general I/O port data register of port 7.
Bit
Bit Name
Initial Value R/W
7
−
1
−
Description
Reserved
This bit is always read as 1 and cannot be modified.
6
P76
0
R/W
PDR7 stores output data for port 7 pins.
5
P75
0
R/W
4
P74
0
R/W
PDR7 is read while PCR7 bits are set to 1, the value stored
in PDR7 is read. If PDR7 is read while PCR7 bits are
cleared to 0, the pin states are read regardless of the value
stored in PDR7.
3
−
1
−
Reserved
2
−
1
−
These bits are always read as 1 and cannot be modified.
1
−
1
−
0
−
1
−
Rev. 1.0, 03/01, page 102 of 280
9.4.3
Pin Functions
The correspondence between the register specification and the port functions is shown below.
P76/TMOV pin
Register
TCSRV
Bit Name
OS3 to OS0 PCR76
Setting Value 0000
Other than
the above
values
PCR7
Pin Function
0
P76 input pin
1
P76 output pin
X
TMOV output pin
Legend X:Don't care.
P75/TMCIV pin
Register
PCR7
Bit Name
PCR75
Setting Value 0
1
Pin Function
P75 input/TMCIV input pin
P75 output/TMCIV input pin
P74/TMRIV pin
Register
PCR7
Bit Name
PCR74
Setting Value 0
1
Pin Function
P74 input/TMRIV input pin
P74 output/TMRIV input pin
Rev. 1.0, 03/01, page 103 of 280
9.5
Port 8
Port 8 is a general I/O port also functioning as a Timer W I/O pin. Each pin of the port 8 is shown
in figure 9-5. The register setting of the timer W has priority for functions of the pins P84/FTIOD,
P83/FTIOC, P82/FTIOB, and P81/FTIOA. P80/FTCI also functions as a timer W input port that is
connected to the timer W regardless of the register setting of port 8.
P84/FTIOD
P83/FTIOC
Port 8
P82/FTIOB
P81/FTIOA
P80/FTCI
Figure 9-5 Port 8 Pin Configuration
Port 8 has the following registers. For details on register addresses and register states during each
process, refer to appendix B, Internal I/O Registers.
• Port control register 8(PCR8)
• Port data register 8(PDR8)
9.5.1
Port Control Register 8(PCR8)
PCR8 selects inputs/outputs in bit units for pins to be used as general I/O ports of port 8.
Bit
Bit Name
Initial Value R/W
7
−
0
−
Reserved
6
−
0
−
These bits are always read as 0 and cannot be modified.
5
−
0
−
4
PCR84
0
W
3
PCR83
0
W
2
PCR82
0
W
1
PCR81
0
W
0
PCR80
0
W
Rev. 1.0, 03/01, page 104 of 280
Description
When each of the port 8 pins P87 to P80 functions as an
general I/O port, setting a PCR8 bit to 1 makes the
corresponding pin an output port, while clearing the bit to 0
makes the pin an input port.
9.5.2
Port Data Register 8(PDR8)
PDR8 is a general I/O port data register of port 8.
Bit
Bit Name
Initial Value R/W
7
−
0
−
6
−
0
−
5
−
0
−
4
P84
0
R/W
PDR8 stores output data for port 8 pins.
3
P83
0
R/W
2
P82
0
R/W
1
P81
0
R/W
PDR8 is read while PCR8 bits are set to 1, the value stored
in PDR8 is read. If PDR8 is read while PCR8 bits are
cleared to 0, the pin states are read regardless of the value
stored in PDR8.
0
P80
0
R/W
9.5.3
Description
Reserved
Pin Functions
The correspondence between the register specification and the port functions is shown below.
P84/FTIOD pin
Register
TIOR1
Bit Name
IOD2
PCR8
IOD1
IOD0
PCR84
Pin Function
Setting Value 0
0
0
0
P84 input/FTIOD input pin
0
0
0
1
P84 output/FTIOD input pin
0
0
1
X
FTIOD output pin
0
1
X
X
FTIOD output pin
1
X
X
0
P84 input/FTIOD input pin
1
X
X
1
P84 output/FTIOD input pin
Legend X: Don't care.
Rev. 1.0, 03/01, page 105 of 280
P83/FTIOC pin
Register
TIOR1
Bit Name
IOC2
PCR8
IOC1
IOC0
PCR83
Pin Function
Setting Value 0
0
0
0
P83 input/FTIOC input pin
0
0
0
1
P83 output/FTIOC input pin
0
0
1
X
FTIOC output pin
0
1
X
X
FTIOC output pin
1
X
X
0
P83 input/FTIOC input pin
1
X
X
1
P83 output/FTIOC input pin
Legend X: Don't care.
P82/FTIOB pin
Register
TIOR0
Bit Name
IOB2
PCR8
IOB1
IOB0
PCR82
Pin Function
Setting Value 0
0
0
0
P82 input/FTIOB input pin
0
0
0
1
P82 output/FTIOB input pin
0
0
1
X
FTIOB output pin
0
1
X
X
FTIOB output pin
1
X
X
0
P82 input/FTIOB input pin
1
X
X
1
P82 output/FTIOB input pin
Legend X: Don't care.
P81/FTIOA pin
Register
TIOR0
Bit Name
IOA2
PCR8
IOA1
IOA0
PCR81
Pin Function
Setting Value 0
0
0
0
P81 input/FTIOA input pin
0
0
0
1
P81 output/FTIOA input pin
0
0
1
X
FTIOA output pin
0
1
X
X
FTIOA output pin
1
X
X
0
P81 input/FTIOA input pin
1
X
X
1
P81 output/FTIOA input pin
Legend X: Don't care.
Rev. 1.0, 03/01, page 106 of 280
P80/FTCI pin
Register
PCR8
Bit Name
PCR80
Setting Value 0
1
9.6
Pin Function
P80 input/FTCI input pin
P80 output/FTCI input pin
Port B
Port B is an input port also functioning as an A/D converter analog input pin. Each pin of the port
B is shown in figure 9-6.
PB3/AN3
Port B
PB2/AN2
PB1/AN1
PB0/AN0
Figure 9-6 Port B Pin Configuration
Port B has the following registers. For details on register addresses and register states during each
process, refer to appendix B, Internal I/O Registers.
• Port data register B(PDRB)
Rev. 1.0, 03/01, page 107 of 280
9.6.1
Port Data Register B(PDRB)
PDRB is a general input-only port data register of port B.
Bit
Bit Name
Initial Value R/W
Description
7
−
−
−
Reserved
6
−
−
−
5
−
−
−
4
−
−
−
3
PB3
−
R
The input value of each pin is read by reading this register.
2
PB2
−
R
1
PB1
−
R
However, if a port B pin is designated as an analog input
channel by ADCSR in A/D converter, 0 is read.
0
PB0
−
R
Rev. 1.0, 03/01, page 108 of 280
Section 10 Timer V
Timer V is an 8-bit timer based on an 8-bit counter. Timer V counts external events. Comparematch signals with two registers can also be used to reset the counter, request an interrupt, or
output a pulse signal with an arbitrary duty cycle. Counting can be initiated by a trigger input at
the TRGV pin, enabling pulse output control to be synchronized to the trigger, with an arbitrary
delay from the trigger input. Figure 10-1 shows a block diagram of timer V.
10.1
Features
• Choice of seven clock signals are available.
• Choice of six internal clock sources (ø/128, ø/64, ø/32, ø/16, ø/8, ø/4) or an external clock (can
be used as an external event counter).
• Counter can be cleared by compare match A or B, or by an external reset signal. If the count
stop function is selected, the counter can be halted when cleared.
• Timer output is controlled by two independent compare match signals, enabling pulse output
with an arbitrary duty cycle, PWM output, and other applications.
• Three interrupt sources: compare match A, compare match B, timer overflow
• Counting can be initiated by trigger input at the TRGV pin. The rising edge, falling edge, or
both edges of the TRGV input can be selected.
Rev. 1.0, 03/01, page 109 of 280
TCRV1
TCORB
Trigger
control
TRGV
Comparator
Clock select
TCNTV
Internal data bus
TMCIV
Comparator
PSS
ø
TCORA
Clear
control
TMRIV
TCRV0
Interrupt
request
control
Output
control
TMOV
Legend:
TCORA:
TCORB:
TCNTV:
TCSRV:
TCRV0:
TCRV1:
PSS:
CMIA:
CMIB:
OVI:
TCSRV
CMIA
CMIB
OVI
Time constant register A
Time constant register B
Timer counter V
Timer control/status register V
Timer control register V0
Timer control register V1
Prescaler S
Compare-match interrupt A
Compare-match interrupt B
Overflow interupt
Figure 10-1 Block Diagram of Timer V
10.2
Input/Output Pins
Table 10-1 shows the timer V pin configuration.
Table 10-1 Pin Configuration
Name
Abbrev.
I/O
Function
Timer V output
TMOV
Output
Timer V waveform output
Timer V clock input
TMCIV
Input
Clock input to TCNTV
Timer V reset input
TMRIV
Input
External input to reset TCNTV
Trigger input
TRGV
Input
Trigger input to initiate counting
Rev. 1.0, 03/01, page 110 of 280
10.3
Register Descriptions
Time V has the following registers. For details on register addresses and register states during
each process, refer to appendix B, Internal I/O Registers.
• Timer counter V(TCNTV)
• Timer constant register A(TCORA)
• Timer constant register B(TCORB)
• Timer control register V0(TCRV0)
• Timer control/status register V(TCSRV)
• Timer control register V1(TCRV1)
10.3.1
Timer Counter V (TCNTV)
TCNTV is an 8-bit up-counter. The clock source is selected by bits CKS2 to CKS0 in Timer
Control Register V0(TCRV0). The TCNTV value can be read and written by the CPU at any time.
TCNTV can be cleared by an external reset input signal, or by compare match A or B. The
clearing signal is selected by bits CCLR1 and CCLR0 in TCRV0.
When TCNTV overflows, OVF is set to 1 in Timer Control/Status Register V(TCSRV).
TCNTV is initialized to H'00.
10.3.2
Time Constant Registers A and B (TCORA, TCORB)
TCORA and TCORB have the same function.
TCORA and TCORB are 8-bit read/write registers.
TCORA and TCNTV are compared at all times. When the TCORA and TCNTV contents match,
CMFA is set to 1 in TCSRV. If CMIEA is also set to 1 in TCRV0, a CPU interrupt is requested.
Note that they must not be compared during the T3 state of a TCORA write cycle.
Timer output from the TMOV pin can be controlled by the identifying signal (compare match A)
and the settings of bits OS3 to OS0 in TCSRV.
TCORA is initialized to H'FF.
Rev. 1.0, 03/01, page 111 of 280
10.3.3
Timer Control Register V0(TCRV0)
TCRV0 selects the input clock signals of TCNTV, specifies the clearing conditions of TCNTV,
and controls each interrupt request.
Bit
Bit Name Initial Value R/W
Description
7
CMIEB
Compare Match Interrupt Enable B
0
R/W
When this bit is set to 1, interrupt request from the CMFB
bit in TCSRV is enabled.
6
CMIEA
0
R/W
Compare Match Interrupt Enable A
When this bit is set to 1, interrupt request from the CMFA
bit in TCSRV is enabled.
5
OVIE
0
R/W
Timer Overflow Interrupt Enable
When this bit is set to 1, interrupt request from the OVF bit
in TCSRV is enabled.
4
CCLR1
0
R/W
Counter Clear 1 and 0
3
CCLR0
0
R/W
These bits specify the clearing conditions of TCNTV.
00: Clearing is disabled
01: Cleared by compare match A
10: Cleared by compare match B
11: Cleared on the rising edge of the TMRIV pin. The
operation of TCNTV after clearing depends on TRGE in
TCRV1.
2
CKS2
0
R/W
Clock Select 2 to 0
1
CKS1
0
R/W
0
CKS0
0
R/W
These bits select clock signals to input to TCNTV and the
counting condition in combination with ICKS0 in TCRV1.
Refer to table 10-2.
Rev. 1.0, 03/01, page 112 of 280
Table 10-2 Clock signals to input to TCNTV and the counting conditions
TCRV0
TCRV1
Bit 2
Bit 1
Bit 0
Bit 0
CKS2
CKS1
CKS0
ICKS0
Description
0
0
0
−
Clock input disabled
1
0
Internal clock: counts on φ/4, falling edge
1
Internal clock: counts on φ/8, falling edge
0
Internal clock: counts on φ/16, falling edge
1
Internal clock: counts on φ/32, falling edge
1
0
0
Internal clock: counts on φ/64, falling edge
1
Internal clock: counts on φ/128, falling edge
0
−
Clock input disabled
1
−
External clock: counts on rising edge
0
−
External clock: counts on falling edge
1
−
External clock: counts on rising and falling edge
1
1
0
1
Rev. 1.0, 03/01, page 113 of 280
10.3.4
Timer Control/Status Register V(TCSRV)
TCSRV indicates the status flag and controls outputs by using a compare match.
Bit
Bit Name
Initial Value R/W
Description
7
CMFB
0
Compare Match Flag B
R/W
Setting condition:
When the TCNTV value matches the TCORB value
Clearing condition:
After reading CMFB=1, cleared by writing 0 to CMFB
6
CMFA
0
R/W
Compare Match Flag A
Setting condition:
When the TCNTV value matches the TCORA value
Clearing condition:
After reading CMFA=1, cleared by writing 0 to CMFA
5
OVF
0
R/W
Timer Overflow Flag
Setting condition:
When TCNTV overflows from H'FF to H'00
Clearing condition:
After reading OVF=1, cleared by writing 0 to OVF
4
−
1
−
Reserved
This bit is always read as 1 and cannot be modified.
3
OS3
0
R/W
Output Select 3 and 2
2
OS2
0
R/W
These bits select an output method for the TOMV pin by
the compare match of TCORB and TCNTV.
00: No change
01: 0 output
10: 1 output
11: Output toggles
1
OS1
0
R/W
Output Select 1 and 0
0
OS0
0
R/W
These bits select an output method for the TOMV pin by
the compare match of TCORA and TCNTV.
00: No change
01: 0 output
10: 1 output
11: Output toggles
Rev. 1.0, 03/01, page 114 of 280
OS3 and OS2 select the output level for compare match B. OS1 and OS0 select the output level
for compare match A. The two output levels can be controlled independently. After a reset, the
timer output is 0 until the first compare match.
10.3.5
Timer Control Register V1(TCRV1)
TCRV1 is an 8-bit read/write register that selects the edge at the TRGV pin, enables TRGV input,
and selects the clock input to TCNTV.
Bit
Bit Name
Initial Value R/W
Description
7
−
1
−
Reserved
6
−
1
−
These bits are always read as 1 and cannot be modified.
5
−
1
−
4
TVEG1
0
R/W
TRGV Input Edge Select
3
TVEG0
0
R/W
These bits select the TRGV input edge.
00: TRGV trigger input is disabled
01: Rising edge is selected
10: Falling edge is selected
11: Rising and falling edges are both selected
2
TRGE
0
R/W
TRGV Input Enable
This bit disables starting counting-up TCNTV by the input
of the TRGV pin and halting counting-up TCNTV when
TCNTV is cleared by a compare match.
1
−
1
−
Reserved
This bit is always read as 1 and cannot be modified.
0
ICKS0
0
R/W
Internal Clock Select 0
This bit selects clock signals to input to TCNTV in
combination with CKS2 to CKS0 in TCRV0.
Refer to table 10-2.
10.4
Operation
10.4.1
Timer V operation
1. According to table 10-2, six internal/external clock signals output by prescaler S can be
selected as the timer V operating clock signals. When the operating clock signal is selected,
TCNTV starts counting-up. Figure 10-2 shows the count timing with an internal clock signal
selected, and figure 10-3 shows the count timing with both edges of an external clock signal
selected.
Rev. 1.0, 03/01, page 115 of 280
2. When TCNTV overflows (changes from H'FF to H'00), the overflow flag (OVF) in TCRV0
will be set. The timing at this time is shown in figure 10-4. An interrupt request is sent to the
CPU when OVIE in TCRV0 is 1.
3. TCNTV is constantly compared with TCORA and TCORB. Compare match flag A or B
(CMFA or CMFB) is set to 1 when TCNTV matches TCORA or TCORB, respectively. The
compare-match signal is generated in the last state in which the values match. Figure 10-5
shows the timing. An interrupt request is generated for the CPU when CMIEA or CMIEB in
TCRV0 is 1.
4. When a compare match A or B is generated, the TMOV responds with the output value
selected by bits OS3 to OS0 in TCSRV. Figure 10-6 shows the timing when the output is
toggled by compare match A.
5. When CCLR1 or CCLR0 in TCRV0 is 01 or 10, TCNTV can be cleared by the corresponding
compare match. Figure 10-7 shows the timing.
6. When CCLR1 or CCLR0 in TCRV0 is 11, TCNTV can be cleared by the rising edge of the
input of TMRIV pin. A TMRIV input pulse-width of at least 1.5 system clocks is necessary.
Figure 10-8 shows the timing.
7. When a counter-clearing source is generated with TRGE in TCRV1 set to 1, the counting-up is
halted as soon as TCNTV is cleared. TCNTV resumes counting-up when the edge selected by
TVEG1 or TVEG0 in TCRV1 is input from the TGRV pin.
ø
Internal clock
TCNTV input
clock
TCNTV
N–1
N
Figure 10-2 Increment Timing with Internal Clock
Rev. 1.0, 03/01, page 116 of 280
N+1
ø
TMCIV
(External clock
input pin)
TCNTV input
clock
TCNTV
N–1
N
N+1
Figure 10-3 Increment Timing with External Clock
ø
TCNTV
H'FF
H'00
Overflow signal
OVF
Figure 10-4 OVF Set Timing
ø
TCNTV
N
TCORA or
TCORB
N
N+1
Compare match
signal
CMFA or
CMFB
Figure 10-5 CMFA and CMFB Set Timing
Rev. 1.0, 03/01, page 117 of 280
ø
Compare match
A signal
Timer V output
pin
Figure 10-6 TMOV Output Timing
ø
Compare match
A signal
N
TCNTV
H'00
Figure 10-7 Clear Timing by Compare Match
ø
Compare match
A signal
Timer V output
pin
TCNTV
N–1
N
H'00
Figure 10-8 Clear Timing by TMRIV Input
Rev. 1.0, 03/01, page 118 of 280
10.5
Timer V application examples
10.5.1
Pulse Output with Arbitrary Duty Cycle
Figure 10-9 shows an example of output of pulses with an arbitrary duty cycle.
1. Set bits CCLR1 and CCLR0 in TCRV0 so that TCNTV will be cleared by compare match with
TCORA.
2. Set bits OS3 to OS0 in TCSRV so that the output will go to 1 at compare match with TCORA
and to 0 at compare match with TCORB.
3. Set bits CKS2 to CKS0 in TCRV0 and bit ICKS0 in TCRV1 to select the desired clock source.
4. With these settings, a waveform is output without further software intervention, with a period
determined by TCORA and a pulse width determined by TCORB.
H'FF
TCNTV
Counter cleared
TCORA
TCORB
H'00
TMOV
Figure 10-9 Pulse Output Example
Rev. 1.0, 03/01, page 119 of 280
10.5.2
Pulse Output with Arbitrary Pulse Width and Delay from TRGV Input
The trigger function can be used to output a pulse with an arbitrary pulse width at an arbitrary
delay from the TRGV input, as shown in figure 10-10. To set up this output:
1. Set bits CCLR1 and CCLR0 in TCRV0 so that TCNTV will be cleared by compare match with
TCORB.
2. Set bits OS3 to OS0 in TCSRV so that the output will go to 1 at compare match with TCORA
and to 0 at compare match with TCORB.
3. Set bits TVEG1 and TVEG0 in TCRV1 and set TRGE to select the falling edge of the TRGV
input.
4. Set bits CKS2 to CKS0 in TCRV0 and bit ICKS0 in TCRV1 to select the desired clock source.
5. After these settings, a pulse waveform will be output without further software intervention,
with a delay determined by TCORA from the TRGV input, and a pulse width determined by
(TCORB – TCORA).
TCNTV
H'FF
Counter cleared
TCORB
TCORA
H'00
TRGV
TMOV
Compare match A
Compare match B
clears TCNTV and
halts count-up
Compare match A
Compare match B
clears TCNTV and
halts count-up
Figure 10-10 Example of Pulse Output Synchronized to TRGV Input
Rev. 1.0, 03/01, page 120 of 280
10.6
Usage Notes
The following types of contention or operation can occur in timer V operation.
1.
Writing to registers is performed in the T3 state of a TCNTV write cycle. If a TCNTV clear
signal is generated in the T3 state of a TCNTV write cycle, as shown in figure 10-11, clearing
takes precedence and the write to the counter is not carried out. If counting-up is generated in
the T3 state of a TCNTV write cycle, writing takes precedence.
2.
If a compare match is generated in the T3 state of a TCORA or TCORB write cycle, the write
to TCORA or TCORB takes precedence and the compare match signal is inhibited. Figure 1012 shows the timing.
3.
If compare matches A and B occur simultaneously, any conflict between the output selections
for compare match A and compare match B is resolved by the following priority: toggle
output > output 1 > output 0.
4.
Depending on the timing, TCNTV may be incremented by a switch between different internal
clock sources. When TCNTV is internally clocked, an increment pulse is generated from the
falling edge of an internal clock signal, that is divided system clock (φ). Therefore, as shown
in figure 10-3 the switch is from a high clock signal to a low clock signal, the switchover is
seen as a falling edge, causing TCNTV to increment. TCNTV can also be incremented by a
switch between internal and external clocks.
TCNTV write cycle by CPU
T2
T1
T3
ø
Address
TCNTV address
Internal write signal
Counter clear signal
TCNTV
N
H'00
Figure 10-11 Contention between TCNTV Write and Clear
Rev. 1.0, 03/01, page 121 of 280
TCORA write cycle by CPU
T1
T2
T3
ø
Address
TCORA address
Internal write signal
TCNTV
N
TCORA
N
N+1
M
TCORA write data
Compare match signal
Inhibited
Figure 10-12 Contention between TCORA Write and Compare Match
Clock before
switching
Clock after
switching
Count clock
TCNTV
N
N+1
N+2
Write to CKS1 and CKS0
Figure 10-13 Internal Clock Switching and TCNTV Operation
Rev. 1.0, 03/01, page 122 of 280
Section 11 Timer W
Timer W has a 16-bit timer having output compare and input capture functions. Timer W can
count external events and output pulses with an arbitrary duty cycle by compare match between
the timer counter and four general registers. Thus, it can be applied to various systems.
11.1
Features
• Selection of five counter clock sources: four internal clocks (φ, φ/2, φ/4, φ/8) and an external
clock (external events can be counted)
• Capability to process up to four pulse outputs or four pulse inputs
• Four general registers:
Independently assignable output compare or input capture functions
Usable as two pairs of registers; one register of each pair operates as a buffer for the output
compare or input capture register
• Four selectable operating modes :
Waveform output by compare match
Selection of 0 output, 1 output, or toggle output
Input capture function
Rising edge, falling edge, or both edges
Counter clearing function
Counters can be cleared by compare match
PWM mode
Up to three-phase PWM output can be provided with desired duty ratio.
• Any initial timer output value can be set
• Five interrupt sources
Four compare match/input capture interrupts and an overflow interrupt.
Table 11-1 summarizes the timer W functions, and figure 11-1 shows a block diagram of timer W.
Rev. 1.0, 03/01, page 123 of 280
Table 11-1 Timer W Functions
Input/Output Pins
Item
Counter
FTIOC
FTIOD
Count clock
Internal clocks: φ, φ/2, φ/4, φ/8
External clock: FTCI
General registers
(output compare/input
capture registers)
Period
GRA
specified in
GRA
GRB
GRC (buffer
register for
GRA in buffer
mode)
GRD (buffer
register for
GRB in buffer
mode)
Counter clearing function
GRA
compare
match
GRA
compare
match
—
—
—
Initial output value
setting function
—
Yes
Yes
Yes
Yes
Buffer function
—
Yes
Yes
—
—
0
—
Yes
Yes
Yes
Yes
1
—
Yes
Yes
Yes
Yes
Toggle
—
Yes
Yes
Yes
Yes
Input capture function
—
Yes
Yes
Yes
Yes
PWM mode
—
—
Yes
Yes
Yes
Interrupt sources
Overflow
Compare
match/input
capture
Compare
match/input
capture
Compare
match/input
capture
Compare
match/input
capture
Compare
match output
Rev. 1.0, 03/01, page 124 of 280
FTIOA
FTIOB
Internal clock: ø
ø/2
ø/4
ø/8
External clock: FTCI
FTIOA
Clock
selector
FTIOB
FTIOC
Control logic
FTIOD
Comparator
TIOR
TSRW
TIERW
TCRW
TMRW
GRD
GRC
GRB
Bus interface
Legend:
TMRW:
TCRW:
TIERW:
TSRW:
TIOR:
TCNT:
GRA:
GRB:
GRC:
GRD:
IRRIW:
GRA
TCNT
IRRTW
Internal
data bus
Timer mode register W (8 bits)
Timer control register W (8 bits)
Timer interrupt enable register W (8 bits)
Timer status register W (8 bits)
Timer I/O control register (8 bits)
Timer counter (16 bits)
General register A (input capture/output compare register: 16 bits)
General register B (input capture/output compare register: 16 bits)
General register C (input capture/output compare register: 16 bits)
General register D (input capture/output compare register: 16 bits)
Timer W interrupt request
Figure 11-1 Timer W Block Diagram
11.2
Input/Output Pins
Table 11-2 summarizes the timer W pins.
Table 11-2 Timer W Pins
Name
Abbreviation
Input/Output
Function
External clock input
FTCI
Input
External clock input pin
Input capture/output
compare A
FTIOA
Input/output
Output pin for GRA output compare or
input pin for GRA input capture
Input capture/output
compare B
FTIOB
Input/output
Output pin for GRB output compare,
input pin for GRB input capture, or
PWM output pin in PWM mode
Input capture/output
compare C
FTIOC
Input/output
Output pin for GRC output compare,
input pin for GRC input capture, or
PWM output pin in PWM mode
Input capture/output
compare D
FTIOD
Input/output
Output pin for GRD output compare,
input pin for GRD input capture, or
PWM output pin in PWM mode
Rev. 1.0, 03/01, page 125 of 280
11.3
Register Descriptions
Timer W has the following registers. For details on register addresses and register states during
each process, refer to appendix B, Internal I/O Registers.
• Timer mode register W(TMRW)
• Timer control register W(TCRW)
• Timer interrupt enable register W(TIERW)
• Timer status register W(TSRW)
• Timer I/O control register 0(TIOR0)
• Timer I/O control register 1(TIOR1)
• Timer counter(TCNT)
• General register A(GRA)
• General register B(GRB)
• General register C(GRC)
• General register D(GRD)
11.3.1
Timer Mode Register W(TMRW)
The timer mode register W (TMRW) selects the general register functions and the timer output
mode.
Rev. 1.0, 03/01, page 126 of 280
Bit
Bit Name
Initial Value R/W
Description
7
CTS
0
Counter Start
R/W
The counter operation is halted when this bit is 0; while it
can be performed when this bit is 1.
6
−
1
−
Reserved
This bit is always read as 1 and cannot be modified.
5
BUFEB
0
R/W
Buffer Operation B
Selects the GRD function.
0: GRD operates as an input capture/output compare
register
1: GRD operates as the buffer register for GRB
4
BUFEA
0
R/W
Buffer Operation A
Selects the GRC function.
0: GRC operates as an input capture/output compare
register
1: GRC operates as the buffer register for GRA
3
−
1
−
Reserved
This bit is always read as 1 and cannot be modified.
2
PWMD
0
R/W
PWM Mode D
Selects the output mode of the FTIOD pin.
0: FTIOD operates normally (output compare output)
1: PWM output
1
PWMC
0
R/W
PWM Mode C
Selects the output mode of the FTIOC pin.
0: FTIOC operates normally(output compare output)
1: PWM output
0
PWMB
0
R/W
PWM Mode B
Selects the output mode of the FTIOB pin.
0: FTIOB operates normally(output compare output)
1: PWM output
Rev. 1.0, 03/01, page 127 of 280
11.3.2
Timer Control Register W(TCRW)
TCRW selects the timer counter clock source, selects a clearing condition, and specifies the timer
initial output levels.
Bit
Bit Name Initial Value
R/W
Description
7
CCLR
R/W
Counter Clear
0
The TCNT value is cleared by compare match A when this
bit is 1. When it is 0, TCNT operates as a free-running
counter.
6
CKS2
0
R/W
Clock Select 2 to 0
5
CKS1
0
R/W
Select the TCNT clock source.
4
CKS0
0
R/W
000: Internal clock: counts on φ
001: Internal clock: counts on φ/2
010: Internal clock: counts on φ/4
011: Internal clock: counts on φ/8
1XX: Counts on rising edges of the external event (FTCI)
When the internal clock source (φ) is selected, subclock
sources are counted in subactive and subsleep modes.
3
TOD
0
R/W
Timer Output Level Setting D
Sets the output value of the FTIOD pin until the first
compare match D is generated.
0: Initial output value is 0
1: Initial output value is 1
2
TOC
0
R/W
Timer Output Level Setting C
Sets the output value of the FTIOC pin until the first
compare match C is generated.
0: Initial output value is 0
1: Initial output value is 1
1
TOB
0
R/W
Timer Output Level Setting B
Sets the output value of the FTIOB pin until the first
compare match B is generated.
0: Initial output value is 0
1: Initial output value is 1
0
TOA
0
R/W
Timer Output Level Setting A
Sets the output value of the FTIOA pin until the first
compare match A is generated.
0: Initial output value is 0
1: Initial output value is 1
Legend X: Don't care.
Rev. 1.0, 03/01, page 128 of 280
11.3.3
Timer Interrupt Enable Register W(TIERW)
TIERW controls the timer W interrupt request.
Bit
Bit Name
Initial Value R/W
Description
7
OVIE
0
Timer Overflow Interrupt Enable
R/W
When this bit is set to 1, FOVI interrupt requested by OVF
flag in TSRW is enabled.
6
−
1
−
Reserved
5
−
1
−
These bits are always read as 1 and cannot be modified.
4
−
1
−
3
IMIED
0
R/W
Input Capture/Compare Match Interrupt Enable D
When this bit is set to 1, IMID interrupt requested by IMFD
flag in TSRW is enabled.
2
IMIEC
0
R/W
Input Capture/Compare Match Interrupt Enable C
When this bit is set to 1, IMIC interrupt requested by IMFC
flag in TSRW is enabled.
1
IMIEB
0
R/W
Input Capture/Compare Match Interrupt Enable B
When this bit is set to 1, IMIB interrupt requested by IMFB
flag in TSRW is enabled.
0
IMIEA
0
R/W
Input Capture/Compare Match Interrupt Enable A
When this bit is set to 1, IMIA interrupt requested by IMFA
flag in TSRW is enabled.
11.3.4
Timer Status Register W(TSRW)
The timer status register W (TSRW) shows the status of interrupt requests.
Bit
Bit Name Initial Value
R/W
7
OVF
R/W
0
Description
Timer Overflow Flag
[Setting condition]
When TCNT overflows from H'FFFF to H'0000
[Clearing condition]
Read OVF when OVF=1, then write 0 in OVF
6
−
1
−
Reserved
5
−
1
−
These bits are always read as 1 and cannot be modified.
4
−
1
−
Rev. 1.0, 03/01, page 129 of 280
Bit
Bit Name Initial Value
R/W
Description
3
IMFD
R/W
Input Capture/Compare Match Flag D
0
[Setting conditions]
•
TCNT=GRD when GRD functions as an output
compare register
•
The TCNT value is transferred to GRD by an input
capture signal when GRD functions as an input capture
register
[Clearing condition]
Read IMFD when IMFD=1, then write 0 in IMFD
2
IMFC
0
R/W
Input Capture/Compare Match Flag C
[Setting conditions]
•
TCNT=GRC when GRC functions as an output
compare register
•
The TCNT value is transferred to GRC by an input
capture signal when GRC functions as an input capture
register
[Clearing condition]
Read IMFC when IMFC=1, then write 0 in IMFC
1
IMFB
0
R/W
Input Capture/Compare Match Flag B
[Setting conditions]
•
TCNT=GRB when GRB functions as an output compare
register
•
The TCNT value is transferred to GRB by an input
capture signal when GRB functions as an input capture
register
[Clearing condition]
Read IMFB when IMFB=1, then write 0 in IMFB
0
IMFA
0
R/W
Input Capture/Compare Match Flag A
[Setting conditions]
•
TCNT=GRA when GRA functions as an output compare
register
•
The TCNT value is transferred to GRA by an input
capture signal when GRA functions as an input capture
register
[Clearing condition]
Read IMFA when IMFA=1, then write 0 in IMFA
Rev. 1.0, 03/01, page 130 of 280
11.3.5
Timer I/O Control Register 0(TIOR0)
TIOR0 selects the functions of GRA and GRB, and specifies the functions of the FTIOA and
FTIOB pins.
Bit
Bit Name
Initial Value R/W
7
−
1
−
6
IOB2
0
R/W
5
4
IOB1
IOB0
0
0
R/W
R/W
3
−
1
−
2
IOA2
0
R/W
1
0
IOA1
IOA0
0
0
R/W
R/W
Description
Reserved
This bit is always read as 1 and cannot be modified.
I/O Control B2
Selects the GRB function.
0: GRB functions as an output compare register
1: GRB functions as an input capture register
I/O Control B1 and B0
When IOB2=0,
00: No output at compare match
01: 0 output to the FTIOB pin at GRB compare match
10: 1 output to the FTIOB pin at GRB compare match
11: output toggles to the FTIOB pin at GRB compare match
When IOB2=1,
00: Input capture at rising edge at the FTIOB pin
01: Input capture at falling edge at the FTIOB pin
1X: Input capture at rising edge and falling edge at the
FTIOB pin
Reserved
This bit is always read as 1 and cannot be modified.
I/O Control A2
Selects the GRA function.
0: GRA functions as an output compare register
1: GRA functions as an input capture register
I/O Control A1 and A0
When IOA2=0,
00: No output at compare match
01: 0 output to the FTIOA pin at GRA compare match
10: 1 output to the FTIOA pin at GRA compare match
11: Output toggles to the FTIOA pin at GRA compare
match
When IOA2=1,
00: Input capture at rising edge of the FTIOA pin
01: Input capture at falling edge of the FTIOA pin
1X: Input capture at rising edge and falling edge of the
FTIOA pin
Legend X: Don't care.
Rev. 1.0, 03/01, page 131 of 280
11.3.6
Timer I/O Control Register 1(TIOR1)
TIOR1 selects the functions of GRC and GRD, and specifies the functions of the FTIOC and
FTIOD pins.
Bit
Bit Name Initial Value
R/W
Description
7
−
1
−
Reserved
This bit is always read as 1 and cannot be modified.
6
IOD2
0
R/W
5
4
IOD1
IOD0
0
0
R/W
R/W
I/O Control D2
Selects the GRD function.
0: GRD functions as an output compare register
1: GRD functions as an input capture register
I/O Control D1 and D0
When IOD2=0,
00: No output at compare match
01: 0 output to the FTIOD pin at GRD compare match
10: 1 output to the FTIOD pin at GRD compare match
11: output toggles to the FTIOD pin at GRD compare
match
When IOD2=1,
00: Input capture at rising edge at the FTIOD pin
01: Input capture at falling edge at the FTIOD pin
1X: Input capture at rising edge and falling edge at the
FTIOD pin
3
−
1
−
Reserved
This bit is always read as 1 and cannot be modified.
2
IOC2
0
R/W
1
0
IOC1
IOC0
0
0
R/W
R/W
I/O Control C2
Selects the GRC function.
0: GRC functions as an output compare register
1: GRC functions as an input capture register
I/O Control C1 and C0
When IOC2=0,
00: No output at compare match
01: 0 output to the FTIOC pin at GRC compare match
10: 1 output to the FTIOC pin at GRC compare match
11: Output toggles to the FTIOC pin at GRC compare
match
When IOC2=1,
00: Input capture to GRC at rising edge of the FTIOC pin
01: Input capture to GRC at falling edge of the FTIOC pin
1X: Input capture to GRC at rising edge and falling edge of
the FTIOC pin
Legend X: Don't care.
Rev. 1.0, 03/01, page 132 of 280
11.3.7
Timer Counter (TCNT)
TCNT is a 16-bit readable/writable up-counter. The clock source is selected by bits CKS2 to
CKS0 in TCRW. TCNT can be cleared to H'0000 through a compare match with GRA by setting
the CCLR of TCRW to 1. When TCNT overflows (changes from H'FFFF to H'0000), the OVF
flag in TSRW is set to 1. If OVIE in TIERW is set to 1 at this time, an interrupt request is
generated. TCNT must always be read or written in 16-bit units; 8-bit access is not allowed.
TCNT is initialized to H'0000 by a reset.
11.3.8
General Registers A to D (GRA to GRD)
Each general register is a 16-bit readable/writable register that can function as either an outputcompare register or an input-capture register. The function is selected by settings in TIOR0 and
TIOR1.
When a general register is used as an input-compare register, its value is constantly compared with
the TCNT value. When the two values match (a compare match), the corresponding flag (IMFA,
IMFB, IMFC, or IMFD) in TSRW is set to 1. An interrupt request is generated at this time, when
IMIEA, IMIEB, IMIEC, or IMIED is set to 1. Compare match output can be selected in TIOR.
When a general register is used as an input-capture register, an external input-capture signal is
detected and the current TCNT value is stored in the general register. The corresponding flag
(IMFA, IMFB, IMFC, or IMFD) in TSRW is set to 1. If the corresponding interrupt-enable bit
(IMIEA, IMIEB, IMIEC, or IMIED) in TSRW is set to 1 at this time, an interrupt request is
generated. The edge of the input-capture signal is selected in TIOR.
GRC and GRD can be used as buffer registers of GRA and GRB, respectively, by setting BUFEA
and BUFEB in TMRW.
For example, when GRA is set as an output-compare register and GRC is set as the buffer register
for GRA, the value in the buffer register GRC is sent to GRA whenever compare match A is
generated.
When GRA is set as an input-capture register and GRC is set as the buffer register for GRA, the
value in TCNT is transferred to GRA and the value in the buffer register GRC is transferred to
GRA whenever an input capture is generated.
GRA to GRD must be written or read in 16-bit units; 8-bit access is not allowed. GRA to GRD are
initialized to H'FFFF by a reset.
Rev. 1.0, 03/01, page 133 of 280
11.4
Operation
• Normal Operation
• PWM Operation
11.4.1
Normal Operation
TCNT performs free-running or periodic counting operations. After a reset, TCNT is set as a freerunning counter. When the CST bit in TMRW is set to 1, TCNT starts incrementing the count.
When the count overflows from H'FFFF to H'0000, the OVF flag in TSRW is set to 1. If the OVIE
in TIERW is set to 1, an interrupt request is generated. Figure 11-2 shows free-running counting.
TCNT value
H'FFFF
H'0000
Time
CST bit
Flag cleared
by software
OVF
Figure 11-2 Free-Running Counter Operation
Periodic counting operation can be performed when GRA is set as an output compare register and
bit CCLR in TCRW is set to 1.
When the count matches GRA, TCNT is cleared to H'0000, the IMFA flag in TSRW is set to 1. If
the corresponding IMIEA bit in TIERW is set to 1, an interrupt request is generated. TCNT
continues counting from H'0000. Figure 11-3 shows periodic counting.
Rev. 1.0, 03/01, page 134 of 280
TCNT value
GRA
H'0000
Time
CST bit
Flag cleared
by software
IMFA
Figure 11-3 Periodic Counter Operation
By setting a general register as an output compare register, compare match A, B, C, or D can
cause the output at the FTIOA, FTIOB, FTIOC, or FTIOD pin to output 0, output 1, or toggle.
Figure 11-4 shows an example of 0 and 1 output when TCNT operates as a free-running counter, 1
output is selected for compare match A, and 0 output is selected for compare match B. When
signal is already at the selected output level, the signal level does not change at compare match.
TCNT value
H'FFFF
GRA
GRB
Time
H'0000
FTIOA
FTIOB
No change
No change
No change
No change
Figure 11-4 0 and 1 Output Example(TOA = 0, TOB = 1)
Figure 11-5 shows an example of toggle output when TCNT operates as a free-running counter,
and toggle output is selected for both compare match A and B.
Rev. 1.0, 03/01, page 135 of 280
TCNT value
H'FFFF
GRA
GRB
Time
H'0000
FTIOA
Toggle output
FTIOB
Toggle output
Figure 11-5 Toggle Output Example (TOA = 0, TOB = 1)
Figure 11-6 shows another example of toggle output when TCNT operates as a periodic counter,
cleared by compare match A. Toggle output is selected for both compare match A and B.
TCNT value
Counter cleared by compare match with GRA
H'FFFF
GRB
GRA
H'0000
Time
FTIOA
Toggle
output
FTIOB
Toggle
output
Figure 11-6 Toggle Output Example (TOA = 0, TOB = 1)
The TCNT value can be captured into a general register (GRA, GRB, GRC, or GRD) when a
signal level changes at an input-capture pin (FTIOA, FTIOB, FTIOC, or FTIOD). Capture can
take place on the rising edge, falling edge, or both edges. By using the input-capture function, the
pulse width and periods can be measured. Figure 11-7 shows an example of input capture when
both edges of FTIOA and the falling edge of FTIOB are selected as capture edges. TCNT operates
as a free-running counter.
Rev. 1.0, 03/01, page 136 of 280
TCNT value
H'FFFF
H'F000
H'AA55
H'55AA
H'1000
H'0000
Time
FTIOA
GRA
H'1000
H'F000
H'55AA
FTIOB
GRB
H'AA55
Figure 11-7 Input Capture Operating Example
Figure 11-8 shows an example of buffer operation when the GRA is set as an input-capture
register and GRC is set as the buffer register for GRA. TCNT operates as a free-running counter,
and FTIOA captures both rising and falling edge of the input signal. Due to the buffer operation,
the GRA value is transferred to GRC by input-capture A and the TCNT value is stored in GRA.
TCNT value
H'FFFF
H'DA91
H'5480
H'0245
H'0000
Time
FTIOA
GRA
GRC
H'0245
H'5480
H'DA91
H'0245
H'5480
Figure 11-8 Buffer Operation Example (Input Capture)
Rev. 1.0, 03/01, page 137 of 280
11.4.2
PWM Operation
In PWM mode, PWM waveforms are generated by using GRA as the period register and GRB,
GRC, and GRD as duty registers. PWM waveforms are output from the FTIOB, FTIOC, and
FTIOD pins. Up to three-phase PWM waveforms can be output. In PWM mode, a general register
functions as an output compare register automatically. The output level of each pin depends on the
corresponding timer output level set bit(TOB, TOC, TOD) in TCRW. When TOB is 1, the FTIOB
output goes to 1 at compare match A and to 0 at compare match B. When TOB is 0, the FTIOB
output goes to 0 at compare match A and to 1 at compare match B. Thus the compare match
output level settings in TIOR0 and TIOR1 are ignored for the output pin set to PWM mode. If the
same value is set in the cycle register and the duty register, the output does not change when a
compare match occurs. Figure 11-9 shows an example of a procedure for setting up PWM mode.
Figure 11-9 shows an example of operation in PWM mode. The output signals go to 1 and TCNT
is cleared at compare match A, and the output signals go to 0 at compare match B, C, and D
(TOB, TOC, and TOD = 1: initial output values are set to 1).
TCNT value
Counter cleared by compare match A
GRA
GRB
GRC
GRD
H'0000
Time
FTIOB
FTIOC
FTIOD
Figure 11-9 PWM Mode Example (1)
Figure 11-10 shows another example of operation in PWM mode. The output signals go to 0 and
TCNT is cleared at compare match A, and the output signals go to 1 at compare match B, C, and
D (TOB, TOC, and TOD = 0: initial output values are set to 1).
Rev. 1.0, 03/01, page 138 of 280
TCNT value
Counter cleared by compare match A
GRA
GRB
GRC
GRD
H'0000
Time
FTIOB
FTIOC
FTIOD
Figure 11-10 PWM Mode Example (2)
Figure 11-11 shows an example of buffer operation when the FTIOB pin is set to PWM mode and
GRD is set as the buffer register for GRB. TCNT is cleared by compare match A, and FTIOB
outputs 1 at compare match B and 0 at compare match A.
Due to the buffer operation, the FTIOB output level changes and the value of buffer register GRD
is transferred to GRB whenever compare match B occurs. This procedure is repeated every time
compare match B occurs.
TCNT value
GRA
GRB
H'0520
H'0450
H'0200
Time
H'0000
GRD
GRB
H'0200
H'0450
H'0200
H'0520
H'0450
H'0520
FTIOB
Figure 11-11 Buffer Operation Example (Output Compare)
Figures 11-12 and 11-13 show examples of the output of PWM waveforms with duty cycles of 0%
and 100%.
Rev. 1.0, 03/01, page 139 of 280
TCNT value
Write to GRB
GRA
GRB
Write to GRB
H'0000
Time
Duty 0%
FTIOB
TCNT value
Output does not change when cycle register
and duty register compare matches occur
simultaneously.
Write to GRB
GRA
Write to GRB
Write to GRB
GRB
H'0000
Time
Duty 100%
FTIOB
TCNT value
Output does not change when cycle register
and duty register compare matches occur
simultaneously.
Write to GRB
GRA
Write to GRB
Write to GRB
GRB
H'0000
Time
Duty 100%
FTIOB
Duty 0%
Figure 11-12 PWM Mode Example
(TOB=0, TOC=0, TOD=0: initial output values are set to 0)
Rev. 1.0, 03/01, page 140 of 280
TCNT value
Write to GRB
GRA
GRB
Write to GRB
H'0000
Time
Duty 100%
FTIOB
TCNT value
Output does not change when cycle register
and duty register compare matches occur
simultaneously.
Write to GRB
GRA
Write to GRB
Write to GRB
GRB
H'0000
Time
Duty 0%
FTIOB
TCNT value
Output does not change when cycle register
and duty register compare matches occur
simultaneously.
Write to GRB
GRA
Write to GRB
Write to GRB
GRB
H'0000
FTIOB
Time
Duty 0%
Duty 100%
Figure 11-13 PWM Mode Example
(TOB=1, TOC=1,and TOD=1: initial output values are set to 1)
Rev. 1.0, 03/01, page 141 of 280
11.5
Operation Timing
11.5.1
TCNT Count Timing
Figure 11-14 shows the TCNT count timing when the internal clock source is selected. Figure 1115 shows the timing when the external clock source is selected. The pulse width of the external
clock signal must be at least two system clock (φ) cycles; shorter pulses will not be counted
correctly.
φ
Internal
clock
Rising edge
TCNT input
clock
N
TCNT
N+1
N+2
Figure 11-14 Count Timing for Internal Clock Source
φ
External
clock
Rising edge
Rising edge
TCNT input
clock
TCNT
N
N+1
N+2
Figure 11-15 Count Timing for External Clock Source
11.5.2
Output Compare Timing
The compare match signal is generated in the last state in which TCNT and the general register
match (when TCNT changes from the matching value to the next value). When the compare match
signal is generated, the output value selected in TIOR is output at the compare match output pin
(FTIOA, FTIOB, FTIOC, or FTIOD). When TCNT matches a general register, the compare match
signal is generated only after the next counter clock pulse is input.
Rev. 1.0, 03/01, page 142 of 280
Figure 11-16 shows the output compare timing.
φ
TCNT input
clock
TCNT
N
GRA to GRD
N
N+1
Compare
match signal
FTIOA to FTIOD
Figure 11-16 Output Compare Output Timing
11.5.3
Input Capture Timing
Input capture on the rising edge, falling edge, or both edges can be selected through settings in
TIOR0 and TIOR1. Figure 11-17 shows the timing when the falling edge is selected. The pulse
width of the input capture signal must be at least two system clock (φ) cycles; shorter pulses will
not be detected correctly.
ø
Input capture
input
Input capture
signal
N–1
TCNT
GRA to GRD
N
N+1
N+2
N
Figure 11-17 Input Capture Input Signal Timing
Rev. 1.0, 03/01, page 143 of 280
11.5.4
Timing of Counter Clearing by Compare Match
Figure 11-18 shows the timing when the counter is cleared by compare match A. When the GRA
value is N, the counter counts from 0 to N, and its cycle is N+1.
φ
Compare
match signal
TCNT
N
GRA
N
H'0000
Figure 11-18 Timing of Counter Clearing by Compare Match
11.5.5
Buffer Operation Timing
Figures 11-19 and 12-20 show the buffer operation timing.
φ
Compare
match signal
TCNT
N
GRC, GRD
M
GRA, GRB
N+1
M
Figure 11-19 Buffer Operation Timing (Compare Match)
Rev. 1.0, 03/01, page 144 of 280
φ
Input capture
signal
TCNT
N
GRA, GRB
M
GRC, GRD
N+1
N
N+1
M
N
Figure 11-20 Buffer Operation Timing (Input Capture)
11.5.6
Timing of IMFA to IMFD Flag Setting at Compare Match
If a general register (GRA, GRB, GRC, or GRD) is used as an output compare register, the
corresponding IMFA, IMFB, IMFC, or IMFD flag is set to 1 when TCNT matches the general
register. The compare match signal is generated in the last state in which the values match (when
TCNT is updated from the matching count to the next count). Therefore, when TCNT matches a
general register, the compare match signal is generated only after the next TCNT clock pulse is
input. Figure 11-21 shows the timing of the IMFA to IMFD flag setting at compare match.
φ
TCNT input
clock
TCNT
N
GRA to GRD
N
N+1
Compare
match signal
IMFA to IMFD
IRRTW
Figure 11-21 Timing of IMFA to IMFD Flag Setting at Compare Match
Rev. 1.0, 03/01, page 145 of 280
11.5.7
Timing of IMFA to IMFD Setting at Input Capture
If a general register (GRA, GRB, GRC, or GRD) is used as an input capture register, the
corresponding IMFA, IMFB, IMFC, or IMFD flag is set to 1 when an input capture occurs. Figure
11-22 shows the timing of the IMFA to IMFD flag setting at input capture.
φ
Input capture
signal
TCNT
N
GRA to GRD
N
IMFA to IMFD
IRRTW
Figure 11-22 Timing of IMFA to IMFD Flag Setting at Input Capture
Timing of Status Flag Clearing: When the CPU reads a status flag while it is set to 1, then writes
0 in the status flag, the status flag is cleared. Figure 11-23 shows the status flag clearing timing.
TSRW write cycle
T1
T2
φ
Address
TSRW address
Write signal
IMFA to IMFD
IRRTW
Figure 11-23 Timing of Status Flag Clearing by the CPU
Rev. 1.0, 03/01, page 146 of 280
11.6
Usage Notes
The following types of contention or operation can occur in timer W operation.
1. The pulse width of the input clock signal and the input capture signal must be at least two
system clock(φ) cycles; shorter pulses will not be detected correctly.
2. Writing to registers is performed in the T2 state of a TCNT write cycle.
If counter clear signal occurs in the T2 state of a TCNT write cycle, clearing of the counter
takes priority and the write is not performed, as shown in figure 11-24. If counting-up is
generated in the TCNT write cycle to contend with the TCNT counting-up, writing takes
precedence.
3. Depending on the timing, TCNT may be incremented by a switch between different internal
clock sources. When TCNT is internally clocked, an increment pulse is generated from the
rising edge of an internal clock signal, that is divided system clock (φ). Therefore, as shown in
figure 11-25 the switch is from a low clock signal to a high clock signal, the switchover is seen
as a rising edge, causing TCNT to increment.
4. If timer W enters module standby mode while an interrupt request is generated, the interrupt
request cannot be cleared. Before entering module standby mode, disable interrupt requests.
TCNT write cycle
T1
T2
φ
Address
TCNT address
Write signal
Counter clear
signal
TCNT
N
H'0000
Figure 11-24 Contention between TCNT Write and Clear
Rev. 1.0, 03/01, page 147 of 280
Previous clock
New clock
Count clock
TCNT
N
N+1
N+2
N+3
The change in signal level at clock switching is
assumed to be a rising edge, and TCNT
increments the count.
Figure 11-25 Internal Clock Switching and TCNT Operation
Rev. 1.0, 03/01, page 148 of 280
Section 12 Watchdog Timer
The watchdog timer(WDT) is an 8-bit timer that can generate an internal reset signal for this LSI
if a system crash prevents the CPU from writing to the timer counter, thus allowing it to overflow.
Internal
oscillator
ø
CLK
TCSRWD
PSS
TCWD
Internal data bus
The block diagram of the WDT is shown in figure 12-1.
TMWD
Legend:
TCSRWD:
TCWD:
PSS:
TMWD:
Internal reset
signal
Timer control/status register WD
Timer counter WD
Prescaler S
Timer mode register WD
Figure 12-1 Block Diagram of WDT
12.1
Features
• Selectable from nine counter input clocks.
Eight clock sources (φ/64, φ/128, φ/256, φ/512, φ/1024, φ/2048, φ/4096, φ/8192) or the internal
oscillator can be selected as the timer-counter clock. When the internal oscillator is selected, it
can operate as the watchdog timer in any operating mode, except in standby mode.
• Reset signal generated on counter overflow
An overflow period of 1 to 256 times the selected clock can be set.
12.2
Register Descriptions
The WDT has the following registers. For details on register addresses and register states during
each process, refer to appendix B, Internal I/O Register.
• Timer control/status register WD(TCSRWD)
• Timer counter WD(TCWD)
• Timer mode register WD(TMWD)
Rev. 1.0, 03/01, page 149 of 280
12.2.1
Timer Control/Status Register WD(TCSRWD)
TCSRWD is a register that indicates TCSRWD and TCWD write control, watchdog timer
operation control, and the operation status.
Bit
Bit Name
Initial Value R/W
Description
7
B6WI
1
Bit 6 Write Inhibit
R
The TCWE bit can be written only when the write value of
the B6WI bit is 0.
This bit is always read as 1.
6
TCWE
0
R/W
Timer Counter WD Write Enable
TCWD can be written when the TCWE bit is set to 1.
When writing data to this bit, the value for bit 7 must be 0.
5
B4WI
1
R
Bit 4 Write Inhibit
The TCSRWE bit can be written only when the write value
of the B4WI bit is 0. This bit is always read as 1.
4
TCSRWE
0
R/W
Timer Control/Status Register W Write Enable
The WDON and WRST bits can be written when the
TCSRWE bit is set to 1.
When writing data to this bit, the value for bit 5 must be 0.
3
B2WI
1
R
Bit 2 Write Inhibit
This bit can be written to the WDON bit only when the write
value of the B2WI bit is 0.
This bit is always read as 1.
2
WDON
0
R/W
Watchdog Timer On
TCWD starts counting up when WDON is set to 1 and halts
when WDON is cleared to 0.
[Setting condition]
When 0 is written to the WDON bit while writing 0 to the
B2WI bit when the TCSRWE bit=1
[Clearing condition]
1
B0WI
1
R
•
Reset by RES pin
•
When 0 is written to the WDON bit while writing 0 to the
B2WI when the TCSRWE bit=1
Bit 0 Write Inhibit
This bit can be written to the WRST bit only when the write
value of the B0WI bit is 0. This bit is always read as 0. This
bit is always read as 1.
Rev. 1.0, 03/01, page 150 of 280
Bit
Bit Name
Initial Value R/W
Description
0
WRST
0
Watchdog Timer Reset
R/W
[Setting condition]
When TCWD overflows and an internal reset signal is
generated
[Clearing condition]
12.2.2
•
Reset by RES pin
•
When 0 is written to the WRST bit while writing 0 to the
B0WI bit when the TCSRWE bit=1
Timer Counter WD(TCWD)
TCWD is an 8-bit readable/writable up-counter. The WRST bit in TCSRWD is set to 1, when
TCWD overflows from H'FF to H'00. TCWD is initialized to H'00.
12.2.3
Timer Mode Register WD(TMWD)
TMWD is an 8-bit readable/writable register that selects the input clock.
Bit
Bit Name
Initial Value R/W
Description
7
−
1
−
Reserved
6
−
1
−
These bits are always read as 1.
5
−
1
−
4
−
1
−
3
CKS3
1
R/W
Clock Select 3 to 0
2
CKS2
1
R/W
Select the clock to be input to TCWD.
1
CKS1
1
R/W
1000: Internal clock: counts on φ/64
0
CKS0
1
R/W
1001: Internal clock: counts on φ/128
1010: Internal clock: counts on φ/256
1011: Internal clock: counts on φ/512
1100: Internal clock: counts on φ/1024
1101: Internal clock: counts on φ/2048
1110: Internal clock: counts on φ/8192
1111: Internal clock: counts on φ
0XXX: Internal resonator
For the internal oscillator overflow periods, see section 16,
Electrical Characteristics.
Legend X: Don't care.
Rev. 1.0, 03/01, page 151 of 280
12.3
Operation
The watchdog timer is provided with an 8-bit counter. If 1 is written to WDON while writing 0 to
B2WI when TCSRWE in TCSRWD is set to 1, TCWD begins counting up. (To operate the
watchdog timer, two write accesses to TCSRWD is required.) When a clock pulse is input after
the TCWD count value has reached H'FF, the watchdog timer overflows and an internal reset
signal is generated one base clock (φ) cycle later. The internal reset signal is output for a period of
512 φosc clock cycles. TCWD is a writable counter, and when a value is set in TCWD, the countup starts from that value. An overflow period in the range of 1 to 256 input clock cycles can
therefore be set, according to the TCWD set value.
Figure 12-2 shows an example of watchdog timer operation.
Example:
With 30ms overflow period when φ = 4 MHz
4 × 106
8192
× 30 × 10–3 = 14.6
Therefore, 256 – 15 = 241 (H'F1) is set in TCW.
TCWD overflow
H'FF
H'F1
TCWD
count value
H'00
Start
H'F1 written
to TCWD
H'F1 written to TCWD
Reset generated
Internal reset
signal
512 φosc clock cycles
Figure 12-2 Watchdog Timer Operation Example
Rev. 1.0, 03/01, page 152 of 280
Section 13 Serial Communication Interface3 (SCI3)
Serial Communication Interface3(SCI3) can handle both asynchronous and clocked synchronous
serial communication. Serial data communication can be carried out using standard asynchronous
communication chips such as a Universal Asynchronous Receiver/Transmitter (UART) or an
Asynchronous Communication Interface Adapter (ACIA). A function is also provided for serial
communication between processors (multiprocessor communication function).
Figure 13-1 shows a block diagram of the SCI3.
13.1
Features
• Choice of asynchronous or clocked synchronous serial communication mode
• Full-duplex communication capability
The transmitter and receiver are mutually independent, enabling transmission and reception to
be executed simultaneously.
Double-buffering is used in both the transmitter and the receiver, enabling continuous
transmission and continuous reception of serial data.
• On-chip baud rate generator allows any bit rate to be selected
• External clock or on-chip baud rate generator can be selected as a transfer clock source (except
for in Smart Card interface mode).
• Six interrupt sources
Transmit-end, transmit-data-empty, receive-data-full, overrun error, framing error, and parity
error.
Asynchronous mode
• Data length: 7 or 8 bits
• Stop bit length: 1 or 2 bits
• Parity: Even, odd, or none
• Receive error detection: Parity, overrun, and framing errors
• Break detection: Break can be detected by reading the RxD pin level directly in the case of a
framing error
Clocked Synchronous mode
• Data length: 8 bits
• Receive error detection: Overrun errors detected
Rev. 1.0, 03/01, page 153 of 280
SCK3
External
clock
Internal clock (ø/64, ø/16, ø/4, ø)
Baud rate generator
BRC
BRR
SMR
Transmit/receive
control circuit
SCR3
SSR
TXD
TSR
TDR
RXD
RSR
RDR
Legend:
Receive shift register
RSR:
Receive data register
RDR:
Transmit shift register
TSR:
Transmit data register
TDR:
Serial mode register
SMR:
SCR3: Serial control register 3
Serial status register
SSR:
Bit rate register
BRR:
Bit rate counter
BRC:
Figure 13-1 Block Diagram of SCI3
Rev. 1.0, 03/01, page 154 of 280
Internal data bus
Clock
Interrupt request
(TEI, TXI, RXI, ERI)
13.2
Input/Output Pins
Table 13-1 shows the SCI3 pin configuration.
Table 13-1 Pin Configuration
Pin Name
Abbrev.
I/O
Function
SCI3 clock
SCK3
I/O
SCI3 clock input/output
SCI3 receive data input
RXD
Input
SCI3 receive data input
SCI3 transmit data output
TXD
Output
SCI3 transmit data output
13.3
Register Descriptions
The SCI3 has the following registers for each channel. For details on register addresses and
register states during each process, refer to appendix B, Internal I/O Register.
• Receive Shift Register (RSR)
• Receive Data Register (RDR)
• Transmit Shift Register (TSR)
• Transmit Data Register (TDR)
• Serial Mode Register (SMR)
• Serial Control Register3 (SCR3)
• Serial Status Register (SSR)
• Bit Rate Register (BRR)
Rev. 1.0, 03/01, page 155 of 280
13.3.1
Receive Shift Register (RSR)
RSR is a shift register that is used to receive serial data input from the RXD pin and convert it into
parallel data. When one byte of data has been received, it is transferred to RDR automatically.
RSR cannot be directly accessed by the CPU.
13.3.2
Receive Data Register (RDR)
RDR is an 8-bit register that stores received data. When the SCI has received one byte of serial
data, it transfers the received serial data from RSR to RDR, where it is stored. After this, RSR is
receive-enabled. As RSR and RDR function as a double buffer in this way, continuous receive
operations are possible. After confirming that the RDRF bit in SSR is set to 1, read RDR only
once. RDR cannot be written to by the CPU. RDR is initialized to H'00.
13.3.3
Transmit Shift Register (TSR)
TSR is a shift register that transmits serial data. To perform serial data transmission, the SCI first
transfers transmit data from TDR to TSR automatically, then sends the data that starts from the
LSB to the TXD pin. TSR cannot be directly accessed by the CPU.
13.3.4
Transmit Data Register (TDR)
TDR is an 8-bit register that stores data for transmission. When the SCI detects that TSR is empty,
it transfers the transmit data written in TDR to TSR and starts transmission. The double-buffered
structure of TDR and TSR enables continuous serial transmission. If the next transmit data has
already been written to TDR during transmission of one-frame data, the SCI transfers the written
data to TSR to continue transmission. To achieve reliable serial transmission, write transmit data
to TDR only once after confirming that the TDRE bit in SSR is set to 1.
Rev. 1.0, 03/01, page 156 of 280
13.3.5
Serial Mode Register (SMR)
SMR is used to set the SCI’s serial transfer format and select the baud rate generator clock source.
Bit
Bit Name
Initial Value
R/W
Description
7
COM
0
R/W
Communication Mode
0: Asynchronous mode
1: Clocked synchronous mode
6
CHR
0
R/W
Character Length (enabled only in asynchronous
mode)
0: Selects 8 bits as the data length.
1: Selects 7 bits as the data length.
5
PE
0
R/W
Parity Enable (enabled only in asynchronous
mode)
When this bit is set to 1, the parity bit is added to
transmit data before transmission, and the parity
bit is checked in reception.
4
PM
0
R/W
Parity Mode (enabled only when the PE bit is 1 in
asynchronous mode)
0: Selects even parity.
1: Selects odd parity.
3
STOP
0
R/W
Stop Bit Length (enabled only in asynchronous
mode)
Selects the stop bit length in transmission.
0: 1 stop bit
1: 2 stop bits
For reception, only the first stop bit is checked,
regardless of the value in the bit. If the second
stop bit is 0, it is treated as the start bit of the next
transmit character.
2
MP
0
R/W
Multiprocessor Mode
When this bit is set to 1, the multiprocessor
communication function is enabled. The PE bit
and PM bit settings are invalid in multiprocessor
mode.
Rev. 1.0, 03/01, page 157 of 280
Bit
Bit Name
Initial Value
R/W
Description
1
CKS1
0
R/W
Clock Select 0 and 1
0
CKS0
0
R/W
These bits select the clock source for the baud
rate generator.
00: ø clock (n = 0)
01: ø/4 clock (n = 1)
10: ø/16 clock (n = 2)
11: ø/64 clock (n = 3)
For the relationship between the bit rate register
setting and the baud rate, see section 13.3.8, Bit
Rate Register (BRR). n is the decimal
representation of the value of n in BRR (see
section 13.3.8, Bit Rate Register (BRR)).
13.3.6
Serial Control Register 3 (SCR3)
SCR3 is a register that enables or disables SCI3 transfer operations and interrupt requests, and is
also used to selection of the transfer clock source. For details on interrupt requests, refer to section
13.7, Interrupts.
Bit
Bit Name
Initial Value
R/W
Description
7
TIE
0
R/W
Transmit Interrupt Enable
When this bit is set to 1, the TXI interrupt request
is enabled.
6
RIE
0
R/W
Receive Interrupt Enable
When this bit is set to 1, RXI and ERI interrupt
requests are enabled.
5
TE
0
R/W
Transmit Enable
When this bit s set to 1, transmission is enabled.
4
RE
0
R/W
Receive Enable
When this bit is set to 1, reception is enabled.
Rev. 1.0, 03/01, page 158 of 280
Bit
Bit Name
Initial Value
R/W
Description
3
MPIE
0
R/W
Multiprocessor Interrupt Enable (enabled only
when the MP bit in SMR is 1 in asynchronous
mode)
When this bit is set to 1, receive data in which the
multiprocessor bit is 0 is skipped, and setting of
the RDRF, FER, and OER status flags in SSR is
prohibited. On receiving data in which the
multiprocessor bit is 1, this bit is automatically
cleared and normal reception is resumed. For
details, refer to section 13.6, Multiprocessor
Communication Function.
2
TEIE
0
R/W
Transmit End Interrupt Enable
This bit is set to 1, TEI interrupt request is
enabled.
1
CKE1
0
R/W
Clock Enable 0 and 1
0
CKE0
0
R/W
Selects the clock source.
Asynchronous mode
00: Internal baud rate generator
01: Internal baud rate generator
Outputs a clock of the same frequency as the bit
rate from the SCK3 pin.
10: External clock
Inputs a clock with a frequency 16 times the bit
rate from the SCK3 pin.
11:Reserved
Clocked synchronous mode
00: Internal clock (SCK3 pin functions as clock
output)
01:Reserved
10: External clock (SCK3 pin functions as clock
input)
11:Reserved
Legend
X: Don’t care
Rev. 1.0, 03/01, page 159 of 280
13.3.7
Serial Status Register (SSR)
SSR is a register containing status flags of the SCI3 and multiprocessor bits for transfer. 1 cannot
be written to flags TDRE, RDRF, OER, PER, and FER; they can only be cleared.
Bit
Bit Name
Initial Value
R/W
7
TDRE
1
R/W
Description
Transmit Data Register Empty
Displays whether TDR contains transmit data.
[Setting conditions]
•
When the TE bit in SCR3 is 0
•
When data is transferred from TDR to TSR
and data can be written to TDR
[Clearing conditions]
6
RDRF
0
R/W
•
When 0 is written to TDRE after reading TDRE
=1
•
When the transmit data is written to TDR
Receive Data Register Full
Indicates that the received data is stored in RDR.
[Setting condition]
•
When serial reception ends normally and
receive data is transferred from RSR to RDR
[Clearing conditions]
5
OER
0
R/W
•
When 0 is written to RDRF after reading RDRF
=1
•
When data is read from RDR
Overrun Error
[Setting condition]
•
When an overrun error occurs in reception
[Clearing condition]
•
Rev. 1.0, 03/01, page 160 of 280
When 0 is written to OER after reading OER =
1
Bit
Bit Name
Initial Value
R/W
Description
4
FER
0
R/W
Framing Error
[Setting condition]
•
When a framing error occurs in reception
[Clearing condition]
•
3
PER
0
R/W
When 0 is written to FER after reading FER =
1
Parity Error
[Setting condition]
•
When a parity error is detected during
reception
[Clearing condition]
•
2
TEND
0
R
When 0 is written to PER after reading PER =
1
Transmit End
[Setting conditions]
•
When the TE bit in SCR3 is 0
•
When TDRE = 1 at transmission of the last bit
of a 1-byte serial transmit character
[Clearing conditions]
1
MPBR
0
R
•
When 0 is written to TDRE after reading TDRE
=1
•
When the transmit data is written to TDR
Multiprocessor Bit Receive
MPBR stores the multiprocessor bit in the receive
character data. When the RE bit in SCR3 is
cleared to 0 its previous state is retained.
0
MPBT
0
R/W
Multiprocessor Bit Transfer
MPBT stores the multiprocessor bit to be added to
the transmit character data.
Rev. 1.0, 03/01, page 161 of 280
13.3.8
Bit Rate Register (BRR)
BRR is an 8-bit register that adjusts the bit rate. The initial value of BRR is H'FF. Table 13-2
shows the relationship between the N setting in BRR and the N setting in bits CKS1 and CKS0 of
SMR in asynchronous mode. Table 13-3 shows the maximum bit rate for each frequency in
asynchronous mode. The value shown in both tables 13-2 and 13-3 are values in active (highspeed) mode. Table 13-4 shows the relationship between the N setting in BRR and the N setting in
bits CKS1 and CKS0 of SMR in clocked synchronous mode. The values shown in table 13-4 are
values in active (high-speed) mode. The N setting in BRR and error for other operating
frequencies and bit rates can be obtained by the following formulas:
[Asynchronous mode]
φ × (106 – 1)
N=
64 × 22n–1 × B
φ × 106
Error(%) =
- 1 × 100
2n–1
× (N + 1)
B ×64 × 2
[Clocked synchronous mode]
N=
B:
N:
φ:
n:
φ × (106 – 1)
8 × 22n–1 × B
Bit rate (bit/s)
BRR setting for baud rate generator (0 ≤ N ≤ 255)
Operating frequency (MHz)
SMR
Rev. 1.0, 03/01, page 162 of 280
Table 13-2 Examples of BRR Settings for Various Bit Rates (Asynchronous Mode)(1)
Operating Frequency ø (MHz)
2
2.097152
2.4576
3
Bit Rate
(bits/s)
n
N
Error
(%)
n
N
Error
(%)
n
N
Error
(%)
n
N
Error
(%)
110
1
141
0.03
1
148
–0.04
1
174
–0.26
1
212
0.03
150
1
103
0.16
1
108
0.21
1
127
0.00
1
155
0.16
300
0
207
0.16
0
217
0.21
0
255
0.00
1
77
0.16
600
0
103
0.16
0
108
0.21
0
127
0.00
0
155
0.16
1200
0
51
0.16
0
54
–0.70
0
63
0.00
0
77
0.16
2400
0
25
0.16
0
26
1.14
0
31
0.00
0
38
0.16
4800
0
12
0.16
0
13
–2.48
0
15
0.00
0
19
–2.34
9600
0
6
–6.99
0
6
–2.48
0
7
0.00
0
9
–2.34
19200
0
2
8.51
0
2
13.78
0
3
0.00
0
4
–2.34
31250
0
1
0.00
0
1
4.86
0
1
22.88
0
2
0.00
38400
0
1
–18.62
0
1
–14.67
0
1
0.00
—
—
—
Legend
—: A setting is available but error occurs.
Operating Frequency ø (MHz)
3.6864
4
4.9152
5
Bit Rate
(bits/s)
n
N
Error
(%)
n
N
Error
(%)
n
N
Error
(%)
n
N
Error
(%)
110
2
64
0.70
2
70
0.03
2
86
0.31
2
88
–0.25
150
1
191
0.00
1
207
0.16
1
255
0.00
2
64
0.16
300
1
95
0.00
1
103
0.16
1
127
0.00
1
129
0.16
600
0
191
0.00
0
207
0.16
0
255
0.00
1
64
0.16
1200
0
95
0.00
0
103
0.16
0
127
0.00
0
129
0.16
2400
0
47
0.00
0
51
0.16
0
63
0.00
0
64
0.16
4800
0
23
0.00
0
25
0.16
0
31
0.00
0
32
–1.36
9600
0
11
0.00
0
12
0.16
0
15
0.00
0
15
1.73
19200
0
5
0.00
0
6
–6.99
0
7
0.00
0
7
1.73
31250
—
—
—
0
3
0.00
0
4
–1.70
0
4
0.00
38400
0
2
0.00
0
2
8.51
0
3
0.00
0
3
1.73
Rev. 1.0, 03/01, page 163 of 280
Table 13-2 Examples of BRR Settings for Various Bit Rates (Asynchronous Mode) (2)
Operating Frequency ø (MHz)
5
6
6.144
7.3728
Bit Rate
(bit/s)
n
N
Error
(%)
n
N
Error
(%)
n
N
Error
(%)
n
N
Error
(%)
110
2
88
–0.25
2
106
–0.44
2
108
0.08
2
130
–0.07
150
2
64
0.16
2
77
0.16
2
79
0.00
2
95
0.00
300
1
129
0.16
1
155
0.16
1
159
0.00
1
191
0.00
600
1
64
0.16
1
77
0.16
1
79
0.00
1
95
0.00
1200
0
129
0.16
0
155
0.16
0
159
0.00
0
191
0.00
2400
0
64
0.16
0
77
0.16
0
79
0.00
0
95
0.00
4800
0
32
–1.36
0
38
0.16
0
39
0.00
0
47
0.00
9600
0
15
1.73
0
19
–2.34
0
19
0.00
0
23
0.00
19200
0
7
1.73
0
9
–2.34
0
9
0.00
0
11
0.00
31250
0
4
0.00
0
5
0.00
0
5
2.40
0
6
5.33
38400
0
3
1.73
0
4
–2.34
0
4
0.00
0
5
0.00
Operating Frequency ø (MHz)
8
9.8304
10
12
Bit Rate
(bit/s)
n
N
Error
(%)
n
N
Error
(%)
n
N
Error
(%)
n
N
Error
(%)
110
2
141
0.03
2
174
–0.26
2
177
–0.25
2
212
0.03
150
2
103
0.16
2
127
0.00
2
129
0.16
2
155
0.16
300
1
207
0.16
1
255
0.00
2
64
0.16
2
77
0.16
600
1
103
0.16
1
127
0.00
1
129
0.16
1
155
0.16
1200
0
207
0.16
0
255
0.00
1
64
0.16
1
77
0.16
2400
0
103
0.16
0
127
0.00
0
129
0.16
0
155
0.16
4800
0
51
0.16
0
63
0.00
0
64
0.16
0
77
0.16
9600
0
25
0.16
0
31
0.00
0
32
–1.36
0
38
0.16
19200
0
12
0.16
0
15
0.00
0
15
1.73
0
19
–2.34
31250
0
7
0.00
0
9
–1.70
0
9
0.00
0
11
0.00
38400
0
6
-6.99
0
7
0.00
0
7
1.73
0
9
–2.34
Rev. 1.0, 03/01, page 164 of 280
Table 13-2 Examples of BRR Settings for Various Bit Rates (Asynchronous Mode) (3)
Operating Frequency ø (MHz)
12.288
14
14.7456
16
Bit Rate
(bit/s)
n
N
Error
(%)
n
N
Error
(%)
n
N
Error
(%)
n
N
Error
(%)
110
2
217
0.08
2
248
–0.17
3
64
0.70
3
70
0.03
150
2
159
0.00
2
181
0.16
2
191
0.00
2
207
0.16
300
2
79
0.00
2
90
0.16
2
95
0.00
2
103
0.16
600
1
159
0.00
1
181
0.16
1
191
0.00
1
207
0.16
1200
1
79
0.00
1
90
0.16
1
95
0.00
1
103
0.16
2400
0
159
0.00
0
181
0.16
0
191
0.00
0
207
0.16
4800
0
79
0.00
0
90
0.16
0
95
0.00
0
103
0.16
9600
0
39
0.00
0
45
–0.93
0
47
0.00
0
51
0.16
19200
0
19
0.00
0
22
–0.93
0
23
0.00
0
25
0.16
31250
0
11
2.40
0
13
0.00
0
14
–1.70
0
15
0.00
38400
0
9
0.00
—
—
—
0
11
0.00
0
12
0.16
Legend
—: A setting is available but error occurs.
Table 13-3 Maximum Bit Rate for Each Frequency (Asynchronous Mode)
ø (MHz)
Maximum Bit
Rate (bit/s)
n
N
ø (MHz)
Maximum Bit
Rate (bit/s)
n
N
2
62500
0
0
7.3728
230400
0
0
2.097152
65536
0
0
8
250000
0
0
2.4576
76800
0
0
9.8304
307200
0
0
3
93750
0
0
10
312500
0
0
3.6864
115200
0
0
12
375000
0
0
4
125000
0
0
12.288
384000
0
0
4.9152
153600
0
0
14
437500
0
0
5
156250
0
0
14.7456
460800
0
0
6
187500
0
0
16
500000
0
0
6.144
192000
0
0
Rev. 1.0, 03/01, page 165 of 280
Table 13-4 BRR Settings for Various Bit Rates (Clocked Synchronous Mode)
Operating Frequency ø (MHz)
2
4
8
10
Bit Rate
(bit/s)
n
N
n
N
n
N
n
N
110
3
70
—
—
—
—
—
—
250
2
124
2
249
3
124
—
500
1
249
2
124
2
249
1k
1
124
1
249
2
2.5k
0
199
1
99
16
n
N
—
3
249
—
—
3
124
124
—
—
2
249
1
199
1
249
2
99
5k
0
99
0
199
1
99
1
124
1
199
10k
0
49
0
99
0
199
0
249
1
99
25k
0
19
0
39
0
79
0
99
0
159
50k
0
9
0
19
0
39
0
49
0
79
100k
0
4
0
9
0
19
0
24
0
39
250k
0
1
0
3
0
7
0
9
0
15
500k
0
0*
0
1
0
3
0
4
0
7
0
0*
0
1
—
—
0
3
0
0*
—
—
0
1
0
0*
—
—
0
0*
1M
2M
2.5M
4M
Legend
Blank : No setting is available.
—
: A setting is available but error occurs.
*
: Continuous transfer is not possible.
Rev. 1.0, 03/01, page 166 of 280
13.4
Operation in Asynchronous Mode
Figure 13-2 shows the general format for asynchronous serial communication. One frame consists
of a start bit (low level), followed by data (in LSB-first order), a parity bit (high or low level), and
finally stop bits (high level). Inside the SCI3, the transmitter and receiver are independent units,
enabling full-duplex. Both the transmitter and the receiver also have a double-buffered structure,
so data can be read or written during transmission or reception, enabling continuous data transfer.
1
Serial
data
LSB
0
D0
Idle state
(mark state)
1
MSB
D1
D2
D3
D4
D5
Start
bit
Transmit/receive data
1 bit
7 or 8 bits
D6
D7
0/1
Parity
bit
1 bit,
or none
1
1
Stop bit
1 or
2 bits
One unit of transfer data (character or frame)
Figure 13-2 Data Format in Asynchronous Communication
Rev. 1.0, 03/01, page 167 of 280
13.4.1
Clock
Either an internal clock generated by the on-chip baud rate generator or an external clock input at
the SCK3 pin can be selected as the SCI3’s serial clock, according to the setting of the COM bit in
SMR and the CKE0 and CKE1 bits in SCR3. When an external clock is input at the SCK3 pin, the
clock frequency should be 16 times the bit rate used.
When the SCI3 is operated on an internal clock, the clock can be output from the SCK3 pin. The
frequency of the clock output in this case is equal to the bit rate, and the phase is such that the
rising edge of the clock is in the middle of the transmit data, as shown in figure 13-3.
Clock
Serial data
0
D0
D1
D2
D3
D4
D5
D6
D7
0/1
1
1
1 frame
Figure 13-3 Relationship between Output Clock and Transfer Data Phase
(Asynchronous Mode)(Example with 8-Bit Data, Parity, Two Stop Bits)
Rev. 1.0, 03/01, page 168 of 280
13.4.2
SCI3 Initialization
Before transmitting and receiving data, you should first clear the TE and RE bits in SCR3 to 0,
then initialize the SCI3 as described below. When the operating mode, or transfer format, is
changed for example, the TE and RE bits must be cleared to 0 before making the change using the
following procedure. When the TE bit is cleared to 0, the TDRE flag is set to 1. Note that clearing
the RE bit to 0 does not initialize the contents of the RDRF, PER, FER, and OER flags, or the
contents of RDR. When the external clock is used in asynchronous mode, the clock must be
supplied even during initialization.
[1]
Start initialization
When the clock output is selected in
asynchronous mode, clock is output
immediately after CKE1 and CKE0
settings are made. When the clock
output is selected at reception in
asynchronous mode, clock is output
immediately after CKE1, CKE0, and RE
are set to 1.
Clear TE and RE bits in SCR3 to 0
[1]
Set CKE1 and CKE0 bits in SCR3
Set data transfer format in SMR
[2]
Set value in BRR
[3]
Wait
[2]
Set the data transfer format in SMR.
[3]
Write a value corresponding to the bit
rate to BRR. Not necessary if an
external clock is used.
[4]
Wait at least one bit interval, then set the
TE bit or RE bit in SCR3 to 1. RE
settings enable the RXD pin to be used.
For transmission, set the TXD bit in
PMR1 to 1 to enable the TXD output pin
to be used. Also set the RIE, TIE, TEIE,
and MPIE bits, depending on whether
interrupts are required. In asynchronous
mode, the bits are marked at
transmission and idled at reception to
wait for the start bit.
No
1-bit interval elapsed?
Yes
Set TE and RE bits in
SCR3 to 1, and set RIE, TIE, TEIE,
and MPIE bits. For transmit (TE=1),
also set the TXD bit in PMR1.
<Initialization completion>
[4]
Set the clock selection in SCR3.
Be sure to clear bits RIE, TIE, TEIE, and
MPIE, and bits TE and RE, to 0.
Figure 13-4 Sample SCI3 Initialization Flowchart
Rev. 1.0, 03/01, page 169 of 280
13.4.3
Data Transmission
Figure 13-5 shows an example of operation for transmission in asynchronous mode. In
transmission, the SCI3 operates as described below.
1. The SCI3 monitors the TDRE flag in SSR. If the flag is cleared to 0, the SCI3 recognizes that
data has been written to TDR, and transfers the data from TDR to TSR.
2. After transferring data from TDR to TSR, the SCI3 sets the TDRE flag to 1 and starts
transmission. If the TIE bit is set to 1 at this time, a transmit data empty interrupt request (TXI)
is generated. Continuous transmission is possible because the TXI interrupt routine writes next
transmit data to TDR before transmission of the current transmit data has been completed.
3. The SCI3 checks the TDRE flag at the timing for sending the stop bit.
4. If the TDRE flag is 0, the data is transferred from TDR to TSR, the stop bit is sent, and then
serial transmission of the next frame is started.
5. If the TDRE flag is 1, the TEND flag in SSR is set to 1, the stop bit is sent, and then the “mark
state” is entered, in which 1 is output. If the TEIE bit in SCR3 is set to 1 at this time, a TEI
interrupt request is generated.
6.
Figure 13-6 shows a sample flowchart for transmission in asynchronous mode.
Start
bit
Serial
data
1
0
Transmit
data
D0
D1
D7
1 frame
Parity Stop Start
bit
bit bit
0/1
1
0
Transmit
data
D0
D1
D7
Parity Stop
bit
bit
0/1
1
Mark
state
1
1 frame
TDRE
TEND
LSI
TXI interrupt
operation request
generated
User
processing
TDRE flag
cleared to 0
TXI interrupt request generated
TEI interrupt request
generated
Data written
to TDR
Figure 13-5 Example SCI3 Operation in Transmission in Asynchronous Mode
(8-Bit Data, Parity, One Stop Bit)
Rev. 1.0, 03/01, page 170 of 280
Start transmission
[1]
Read TDRE flag in SSR
No
TDRE = 1
Yes
Write transmit data to TDR
Yes
[2]
All data transmitted?
No
[1] Read SSR and check that the
TDRE flag is set to 1, then write
transmit data to TDR and clear the
TDRE flag to 0. Checking and
clearing of the TDRE flag is
automatic.
[2] To continue serial transmission,
read 1 from the TDRE flag to
confirm that writing is possible,
then write data to TDR, and then
clear the TDRE flag to 0. Checking
and clearing of the TDRE flag is
automatic.
[3] To output a break in serial
transmission, set PCR to 1 and
PDR to 0, clear TXD in PMR1 to 0,
then clear the TE bit in SCR3 to 0.
Read TEND flag in SSR
No
TEND = 1
Yes
No
[3]
Break output?
Yes
Clear PDR to 0 and
set PCR to 1
Clear TE bit in SCR3 to 0
<End>
Figure 13-6 Sample Serial Transmission Flowchart
Rev. 1.0, 03/01, page 171 of 280
13.4.4
Serial Data Reception
Figure 13-7 shows an example of operation for reception in asynchronous mode. In serial
reception, the SCI operates as described below.
1. The SCI3 monitors the communication line. If a start bit is detected, the SCI3 performs
internal synchronization, receives receive data in RSR, and checks the parity bit and stop bit.
2. If an overrun error occurs (when reception of the next data is completed while the RDRF flag
is still set to 1), the OER bit in SSR is set to 1. If the RIE bit in SCR3 is set to 1 at this time, an
ERI interrupt request is generated. Receive data is not transferred to RDR.
3. If a parity error is detected, the PER bit in SSR is set to 1 and receive data is transferred to
RDR. If the RIE bit in SCR3 is set to 1 at this time, an ERI interrupt request is generated.
4. If a framing error is detected (when the stop bit is 0), the FER bit in SSR is set to 1 and receive
data is transferred to RDR. If the RIE bit in SCR3 is set to 1 at this time, an ERI interrupt
request is generated.
5. If reception is completed successfully, the RDRF bit in SSR is set to 1, and receive data is
transferred to RDR. If the RIE bit in SCR3 is set to 1 at this time, an RXI interrupt request is
generated. Continuous reception is possible because the RXI interrupt routine reads the receive
data transferred to RDR before reception of the next receive data has been completed.
Start
bit
Serial
data
1
0
Receive
data
D0
D1
D7
Parity Stop Start
bit
bit bit
0/1
1
0
1 frame
Receive
data
D0
D1
Parity Stop
bit
bit
D7
0/1
0
Mark state
(idle state)
1
1 frame
RDRF
FER
LSI
operation
RXI request
User
processing
RDRF
cleared to 0
RDR data read
0 stop bit
detected
ERI request in
response to
framing error
Framing error
processing
Figure 13-7 Example SCI3 Operation in Reception in Asynchronous Mode
(8-Bit Data, Parity, One Stop Bit)
Rev. 1.0, 03/01, page 172 of 280
Table 13-5 SSR Status Flags and Receive Data Handling
SSR Status Flag
RDRF*
OER
FER
PER
Receive Data
Receive Error Type
1
1
0
0
Lost
Overrun error
0
0
1
0
Transferred to RDR
Framing error
0
0
0
1
Transferred to RDR
Parity error
1
1
1
0
Lost
Overrun error + framing error
1
1
0
1
Lost
Overrun error + parity error
0
0
1
1
Transferred to RDR
Framing error + parity error
1
1
1
1
Lost
Overrun error + framing error +
parity error
Note: * The RDRF flag retains the state it had before data reception.
Rev. 1.0, 03/01, page 173 of 280
Table 13-5 shows the states of the SSR status flags and receive data handling when a receive error
is detected. If a receive error is detected, the RDRF flag retains its state before receiving data.
Reception cannot be resumed while a receive error flag is set to 1. Accordingly, clear the OER,
FER, PER, and RDRF bits to 0 before resuming reception. Figure 13-8 shows a sample flow chart
for serial data reception.
[1] Read the OER, PER, and FER flags in
SSR to identify the error. If a receive
error occurs, performs the appropriate
error processing.
Start reception
Read OER, PER, and
FER flags in SSR
No
Yes
[2] SCI status check and receive data read:
Read SSR and check that RDRF = 1,
then read the receive data in RDR and
Yes
clear the RDRF flag to 0. The RDRF
OER+PER+FER = 1
[4]
flag is cleared automatically.
[3] To continue serial reception, before the
No
Error processing
stop bit for the current frame is
received, read the RDRF flag, read
(Continued on next page)
RDR, and clear the RDRF flag to 0.
[2]
Read RDRF flag in SSR
The RDRF flag is cleared automatically.
[4] If a receive error occurs, read the OER,
PER, and FER flags in SSR to identify
the error. After performing the
RDRF = 1
appropriate error processing, ensure
that the OER, PER, and FER flags are
Yes
all cleared to 0. Reception cannot be
resumed if any of these flags are set to
Read receive data in RDR
1. In the case of a framing error, a
break can be detected by reading the
value of the input port corresponding to
the RxD pin.
All data received?
(A)
[1]
[3]
No
Clear RE bit in SCR3 to 0
<End>
Figure 13-8 Sample Serial Reception Data Flowchart (Asynchronous mode)(1)
Rev. 1.0, 03/01, page 174 of 280
[4]
Error processing
No
OER = 1
Yes
Overrun error processing
No
FER = 1
Yes
Yes
Break?
No
Framing error processing
Clear RE bit in SCR3 to 0
(A)
No
PER = 1
Yes
Parity error processing
Clear OER, PER, and
FER flags in SSR to 0
<End>
Figure 13-8 Sample Serial Reception Data Flowchart (2)
Rev. 1.0, 03/01, page 175 of 280
13.5
Operation in Clocked Synchronous Mode
Figure 13-9 shows the general format for clocked synchronous communication. In clocked
synchronous mode, data is transmitted or received synchronous with clock pulses. A single
character in the transmit data consists of the 8-bit data starting from the LSB. In clocked
synchronous serial communication, data on the transmission line is output from one falling edge of
the serial clock to the next. In clocked synchronous mode, the SCI3 receives data in synchronous
with the rising edge of the serial clock. After 8-bit data is output, the transmission line holds the
MSB state. In clocked synchronous mode, no parity or multiprocessor bit is added. Inside the
SCI3, the transmitter and receiver are independent units, enabling full-duplex communication
through the use of a common clock. Both the transmitter and the receiver also have a doublebuffered structure, so data can be read or written during transmission or reception, enabling
continuous data transfer.
8-bit
One unit of transfer data (character or frame)
*
*
Synchronization
clock
LSB
Bit 0
Serial data
MSB
Bit 1
Don’t care
Bit 2
Bit 3
Bit 4
Bit 5
Bit 6
Bit 7
Don’t care
Note: * High except in continuous transfer
Figure 13-9 Data Format in Synchronous Communication
13.5.1
Clock
Either an internal clock generated by the on-chip baud rate generator or an external
synchronization clock input at the SCK3 pin can be selected, according to the setting of the COM
bit in SMR and CKE0 and CKE1 bits in SCR3. When the SCI3 is operated on an internal clock,
the serial clock is output from the SCK3 pin. Eight serial clock pulses are output in the transfer of
one character, and when no transfer is performed the clock is fixed high.
13.5.2
SCI3 Initialization
Before transmitting and receiving data, the SCI3 should be initialized as described in a sample
flowchart in figure 13-4.
Rev. 1.0, 03/01, page 176 of 280
13.5.3
Serial Data Transmission
Figure 13-10 shows an example of SCI3 operation for transmission in clocked synchronous mode.
In serial transmission, the SCI3 operates as described below.
1. The SCI3 monitors the TDRE flag in SSR, and if the flag is 0, the SCI recognizes that data has
been written to TDR, and transfers the data from TDR to TSR.
2. The SCI3 sets the TDRE flag to 1 and starts transmission. If the TIE bit in SCR3 is set to 1 at
this time, a transmit data empty interrupt (TXI) is generated.
3. 8-bit data is sent from the TXD pin synchronized with the output clock when output clock
mode has been specified, and synchronized with the input clock when use of an external clock
has been specified. Serial data is transmitted sequentially from the LSB (bit 0), from the TXD
pin.
4. The SCI checks the TDRE flag at the timing for sending the MSB (bit 7).
5. If the TDRE flag is cleared to 0, data is transferred from TDR to TSR, and serial transmission
of the next frame is started.
6.
If the TDRE flag is set to 1, the TEND flag in SSR is set to 1, and the TDRE flag maintains
the output state of the last bit. If the TEIE bit in SCR3 is set to 1 at this time, a TEI interrupt
request is generated.
7.
The SCK3 pin is fixed high.
Figure 13-11 shows a sample flow chart for serial data transmission. Even if the TDRE flag is
cleared to 0, transmission will not start while a receive error flag (OER, FER, or PER) is set to 1.
Make sure that the receive error flags are cleared to 0 before starting transmission.
Serial
clock
Serial
data
Bit 0
Bit 1
1 frame
Bit 7
Bit 0
Bit 1
Bit 6
Bit 7
1 frame
TDRE
TEND
LSI
TXI interrupt
operation request
generated
TDRE flag
cleared
to 0
User
processing
Data written
to TDR
TXI interrupt request generated
TEI interrupt request
generated
Figure 13-10 Example of SCI3 Operation in Transmission in Clocked Synchronous Mode
Rev. 1.0, 03/01, page 177 of 280
Start transmission
[1]
[1]
Read TDRE flag in SSR
No
TDRE = 1
[2]
Yes
Write transmit data to TDR
Read SSR and check that the TDRE flag is
set to 1, then write transmit data to TDR
and clear the TDRE flag to 0. When data is
written to TDR, the TDRE flag is
automatically cleared to 0 and clocks are
output to start the data transmission.
To continue serial transmission, be sure to
read 1 from the TDRE flag to confirm that
writing is possible, then write data to TDR.
When data is written to TDR, the TDRE flag
is automatically cleared to 0.
No
[2]
All data transmitted?
Yes
Read TEND flag in SSR
No
TEND = 1
Yes
Clear TE bit in SCR3 to 0
<End>
Figure 13-11 Sample Serial Transmission Flowchart(Clocked Synchronous Mode)
Rev. 1.0, 03/01, page 178 of 280
13.5.4
Serial Data Reception (Clocked Synchronous Mode)
Figure 13-12 shows an example of SCI3 operation for reception in clocked synchronous mode. In
serial reception, the SCI3 operates as described below.
1.
The SCI3 performs internal initialization synchronous with a synchronous clock input or
output, starts receiving data.
2.
The SCI3 stores the received data in RSR.
3.
If an overrun error occurs (when reception of the next data is completed while the RDRF flag
in SSR is still set to 1), the OER bit in SSR is set to 1. If the RIE bit in SCR3 is set to 1 at this
time, an ERI interrupt request is generated, receive data is not transferred to RDR, and the
RDRF flag remains to be set to 1.
4.
If reception is completed successfully, the RDRF bit in SSR is set to 1, and receive data is
transferred to RDR. If the RIE bit in SCR3 is set to 1 at this time, an RXI interrupt request is
generated.
Reception cannot be resumed while a receive error flag is set to 1. Accordingly, clear the OER,
FER, PER, and RDRF bits to 0 before resuming reception. Figure 13-13 shows a sample flow
chart for serial data reception.
Serial
clock
Serial
data
Bit 7
Bit 0
Bit 7
1 frame
Bit 0
Bit 1
Bit 6
Bit 7
1 frame
RDRF
OER
LSI
operation
User
processing
RXI interrupt
request
generated
RDRF flag
cleared
to 0
RDR data read
RXI interrupt request generated
RDR data has
not been read
(RDRF = 1)
ERI interrupt request
generated by
overrun error
Overrun error
processing
Figure 13-12 Example of SCI3 Reception Operation in Clocked Synchronous Mode
Rev. 1.0, 03/01, page 179 of 280
Start reception
[1]
[1]
Read OER flag in SSR
[2]
Yes
OER = 1
[4]
No
Error processing
[3]
(Continued below)
Read RDRF flag in SSR
[2]
No
[4]
RDRF = 1
Yes
Read the OER flag in the serial status
register (SSR) to determine if there is an
error. If an overrun error has occurred,
execute overrun error processing.
Read SSR and check that the RDRF flag is
set to 1, then read the receive data in RDR.
When data is read from RDR, the RDRF
flag is automatically cleared to 0.
To continue serial reception, before the
MSB (bit 7) of the current frame is received,
reading the RDRF flag, reading RDR, and
clearing the RDRF flag to 0 should be
finished. When data is read from RDR, the
RDRF flag is automatically cleared to 0.
If an overrun error occurs, read the OER
flag in SSR, and after performing the
appropriate error processing, clear the OER
Read receive data in RDR
Yes
All data received?
[3]
No
Clear RE bit in SCR3 to 0
<End>
[4]
Error processing
Overrun error processing
Clear OER flag in SSR to 0
<End>
Figure 13-13 Sample Serial Reception Flowchart(Clocked Synchronous Mode)
Rev. 1.0, 03/01, page 180 of 280
13.5.5
Simultaneous Serial Data Transmission and Reception
Figure 13-14 shows a sample flowchart for simultaneous serial transmit and receive operations.
The following procedure should be used for simultaneous serial data transmit and receive
operations. To switch from transmit mode to simultaneous transmit and receive mode, after
checking that the SCI3 has finished transmission and the TDRE and TEND flags are set to 1, clear
TE to 0. Then simultaneously set TE and RE to 1 with a single instruction. To switch from receive
mode to simultaneous transmit and receive mode, after checking that the SCI3 has finished
reception, clear RE to 0. Then after checking that the RDRF and receive error flags (OER, FER,
and PER) are cleared to 0, simultaneously set TE and RE to 1 with a single instruction.
Rev. 1.0, 03/01, page 181 of 280
Start transmission/reception
Read TDRE flag in SSR
[1]
[1]
No
TDRE = 1
Yes
Write transmit data to TDR
Read ORER flag in SSR
OER = 1
No
Read RDRF flag in SSR
Yes
[4]
Error processing
[2]
No
RDRF = 1
Yes
Read receive data in RDR
Read SSR and check that the TDRE
flag is set to 1, then write transmit
data to TDR.
When data is written to TDR, the
TDRE flag is automatically cleared to
0.
[2] Read SSR and check that the RDRF
flag is set to 1, then read the receive
data in RDR.
When data is read from RDR, the
RDRF flag is automatically cleared to
0.
[3] To continue serial transmission/
reception, before the MSB (bit 7) of
the current frame is received, finish
reading the RDRF flag, reading RDR.
Also, before the MSB (bit 7) of the
current frame is transmitted, read 1
from the TDRE flag to confirm that
writing is possible. Then write data to
TDR.
When data is written to TDR, the
TDRE flag is automatically cleared to
0. When data is read from RDR, the
RDRF flag is automatically cleared to
0.
[4] Receive error processing:
If an overrun error occurs, read the
OER flag in SSR, and after
performing the appropriate error
processing, clear the OER flag to 0.
Transmission/reception cannot be
resumed if the OER flag is set to 1.
For overrun error processing, see
figure 13-13.
Yes
All data received?
[3]
No
Clear TE and RE bits in SCR to 0
<End>
Figure 13-14 Sample Flowchart of Simultaneous Serial Transmit and Receive Operations
(Clocked Synchronous Mode)
Rev. 1.0, 03/01, page 182 of 280
13.6
Multiprocessor Communication Function
Use of the multiprocessor communication function enables data transfer between a number of
processors sharing communication lines by asynchronous serial communication using the
multiprocessor format, in which a multiprocessor bit is added to the transfer data. When
multiprocessor communication is performed, each receiving station is addressed by a unique ID
code. The serial communication cycle consists of two component cycles; an ID transmission cycle
that specifies the receiving station, and a data transmission cycle. The multiprocessor bit is used to
differentiate between the ID transmission cycle and the data transmission cycle. If the
multiprocessor bit is 1, the cycle is an ID transmission cycle; if the multiprocessor bit is 0, the
cycle is a data transmission cycle. Figure 13-15 shows an example of inter-processor
communication using the multiprocessor format. The transmitting station first sends the ID code
of the receiving station with which it wants to perform serial communication as data with a 1
multiprocessor bit added. It then sends transmit data as data with a 0 multiprocessor bit added.
When data with a 1 multiprocessor bit is received, the receiving station compares that data with its
own ID. The station whose ID matches then receives the data sent next. Stations whose IDs do not
match continue to skip data until data with a 1 multiprocessor bit is again received.
The SCI3 uses the MPIE bit in SCR3 to implement this function. When the MPIE bit is set to 1,
transfer of receive data from RSR to RDR, error flag detection, and setting the SSR status flags,
RDRF, FER, and OER to 1, are inhibited until data with a 1 multiprocessor bit is received. On
reception of a receive character with a 1 multiprocessor bit, the MPBR bit in SSR is set to 1 and
the MPIE bit is automatically cleared, thus normal reception is resumed. If the RIE bit in SCR3 is
set to 1 at this time, an RXI interrupt is generated.
When the multiprocessor format is selected, the parity bit setting is rendered invalid. All other bit
settings are the same as those in normal asynchronous mode. The clock used for multiprocessor
communication is the same as that in normal asynchronous mode.
Rev. 1.0, 03/01, page 183 of 280
Transmitting
station
Serial transmission line
Receiving
station A
Receiving
station B
Receiving
station C
Receiving
station D
(ID = 01)
(ID = 02)
(ID = 03)
(ID = 04)
Serial
data
H'01
H'AA
(MPB = 1)
(MPB = 0)
ID transmission cycle = Data transmission cycle =
Data transmission to
receiving station
receiving station specified by ID
specification
Legend
MPB: Multiprocessor bit
Figure 13-15 Example of Communication Using Multiprocessor Format
(Transmission of Data H'AA to Receiving Station A)
Rev. 1.0, 03/01, page 184 of 280
13.6.1
Multiprocessor Serial Data Transmission
Figure 13-16 shows a sample flowchart for multiprocessor serial data transmission. For an ID
transmission cycle, set the MPBT bit in SSR to 1 before transmission. For a data transmission
cycle, clear the MPBT bit in SSR to 0 before transmission. All other SCI3 operations are the same
as those in asynchronous mode.
Start transmission
[1]
[1]
Read TDRE flag in SSR
No
TDRE = 1
[2]
Yes
Set MPBT bit in SSR
[3]
Write transmit data to TDR
[2]
All data transmitted?
Yes
Read SSR and check that the TDRE
flag is set to 1, set the MPBT bit in
SSR to 0 or 1, then write transmit
data to TDR. When data is written to
TDR, the TDRE flag is automatically
cleared to 0.
To continue serial transmission, be
sure to read 1 from the TDRE flag to
confirm that writing is possible, then
write data to TDR. When data is
written to TDR, the TDRE flag is
automatically cleared to 0.
To output a break in serial
transmission, set the port PCR to 1,
clear PDR to 0, then clear the TE bit
in SCR3 to 0.
No
Read TEND flag in SSR
No
TEND = 1
Yes
No
[3]
Break output?
Yes
Clear PDR to 0 and set PCR to 1
Clear TE bit in SCR3 to 0
<End>
Figure 13-16 Sample Multiprocessor Serial Transmission Flowchart
Rev. 1.0, 03/01, page 185 of 280
13.6.2
Multiprocessor Serial Data Reception
Figure 13-17 shows a sample flowchart for multiprocessor serial data reception. If the MPIE bit in
SCR3 is set to 1, data is skipped until data with a 1 multiprocessor bit is sent. On receiving data
with a 1 multiprocessor bit, the receive data is transferred to RDR. An RXI interrupt request is
generated at this time. All other SCI3 operations are the same as in asynchronous mode. Figure
13-18 shows an example of SCI3 operation for multiprocessor format reception.
Rev. 1.0, 03/01, page 186 of 280
[1]
[2]
Start reception
Read MPIE bit in SCR3
[1]
Read OER and FER flags in SSR
[2]
[3]
Yes
FER+OER = 1
No
Read RDRF flag in SSR
Set the MPIE bit in SCR to 1.
Read OER and FER in SSR to check for
errors. Receive error processing is performed
in cases where a receive error occurs.
Read SSR and check that the RDRF flag is
set to 1, then read the receive data in RDR
and compare it with this station’s ID.
If the data is not this station’s ID, set the MPIE
bit to 1 again, and clear the RDRF flag to 0.
When data is read from RDR, the RDRF flag
is automatically cleared to 0.
[3]
[4]
No
RDRF = 1
[5]
Yes
Read receive data in RDR
No
This station’s ID?
Yes
SCI status check and data reception:
Read SSR and check that the RDRF flag is
set to 1, then read the data in RDR.
If a receive error occurs, read the OER and
FER flags in SSR to identify the error. After
performing the appropriate error processing,
ensure that the OER and FER flags are all
cleared to 0.
Reception cannot be resumed if either of
these flags is set to 1.
In the case of a framing error, a break can be
detected by reading the RxD pin value.
Read OER and FER flags in SSR
Yes
FER+OER=1
No
Read RDRF flag in SSR
[4]
No
RDRF = 1
Yes
Read receive data in RDR
Yes
[5]
All data received?
Error processing
No
[A]
(Continued on
next page)
Clear RE bit in SCR3 to 0
<End>
Figure 13-17 Sample Multiprocessor Serial Reception Flowchart (1)
Rev. 1.0, 03/01, page 187 of 280
[5]
Error processing
No
OER = 1
Yes
Overrun error processing
No
FER = 1
Yes
Yes
Break?
No
[A]
Framing error processing
Clear OER, and
FER flags in SSR to 0
<End>
Figure 13-17 Sample Multiprocessor Serial Reception Flowchart (2)
Rev. 1.0, 03/01, page 188 of 280
Start
bit
Serial
data
1
0
Receive
data (ID1)
D0
D1
D7
MPB
1
Stop Start
bit bit
1
0
Receive data
(Data1)
D0
1 frame
D1
D7
MPB
Stop
bit
Mark state
(idle state)
0
1
1
1 frame
MPIE
RDRF
RDR
value
ID1
LSI
operation
RDRF flag
cleared
to 0
RXI interrupt
request
MPIE cleared
to 0
User
processing
RXI interrupt request
is not generated, and
RDR retains its state
RDR data read
When data is not
this station's ID,
MPIE is set to 1
again
(a) When data does not match this receiver's ID
Start
bit
Serial
data
1
0
Receive
data (ID2)
D0
D1
D7
MPB
1
Stop Start
bit bit
1
0
Receive data
(Data2)
D0
1 frame
D1
D7
MPB
Stop
bit
Mark state
(idle state)
0
1
1
1 frame
MPIE
RDRF
RDR
value
LSI
operation
User
processing
ID1
ID2
RXI interrupt
request
MPIE cleared
to 0
RDRF flag
cleared
to 0
RDR data read
Data2
RXI interrupt
request
When data is
this station's
ID, reception
is continued
RDRF flag
cleared
to 0
RDR data read
MPIE set to 1
again
(b) When data matches this receiver's ID
Figure 13-18 Example of SCI3 Operation in Reception Using Multiprocessor Format
(Example with 8-Bit Data, MultiprocessorBit, One Stop Bit)
Rev. 1.0, 03/01, page 189 of 280
13.7
Interrupts
SCI3 creates the following six interrupt requests: transmission end, transmit data empty, receive
data full, and receive errors (overrun error, framing error, and parity error). Table 13-6 shows the
interrupt sources.
Table 13-6 SCI3 Interrupt Requests
Interrupt Requests
Abbrev.
Interrupt Sources
Receive Data Full
RXI
Setting RDRF in SSR
Transmit Data Empty
TXI
Setting TDRE in SSR
Transmission End
TEI
Setting TEND in SSR
Receive Error
ERI
Setting OER, FER, and PER in SSR
The initial value of the TDRE flag in SSR is 1. Thus, when the TIE bit in SCR3 is set to 1 before
transferring the transmit data to TDR, a TXI interrupt request is generated even if the transmit data
is not ready. The initial value of the TEND flag in SSR is 1. Thus, when the TEIE bit in SCR3 is
set to 1 before transferring the transmit data to TDR, a TEI interrupt request is generated even if
the transmit data has not been sent. It is possible to make use of the most of these interrupt
requests efficiently by transferring the transmit data to TDR in the interrupt routine. To prevent
the generation of these interrupt requests (TXI and TEI), set the enable bits (TIE and TEIE) that
correspond to these interrupt requests to 1, after transferring the transmit data to TDR.
Rev. 1.0, 03/01, page 190 of 280
13.8
Usage Notes
13.8.1
Break Detection and Processing
When framing error detection is performed, a break can be detected by reading the RXD pin value
directly. In a break, the input from the RXD pin becomes all 0s, setting the FER flag, and possibly
the PER flag. Note that as the SCI3 continues the receive operation after receiving a break, even if
the FER flag is cleared to 0, it will be set to 1 again.
13.8.2
Mark State and Break Detection
When TE is 0, the TXD pin is used as an I/O port whose direction (input or output) and level are
determined by PCR and PDR. This can be used to set the TXD pin to mark state (high level) or
send a break during serial data transmission. To maintain the communication line at mark state
until TE is set to 1, set both PCR and PDR to 1. As TE is cleared to 0 at this point, the TXD pin
becomes an I/O port, and 1 is output from the TXD pin. To send a break during serial
transmission, first set PCR to 1 and PDR to 0, and then clear TE to 0. When TE is cleared to 0, the
transmitter is initialized regardless of the current transmission state, the TXD pin becomes an I/O
port, and 0 is output from the TXD pin.
13.8.3
Receive Error Flags and Transmit Operations (Clocked Synchronous Mode Only)
Transmission cannot be started when a receive error flag (OER, PER, or FER) is set to 1, even if
the TDRE flag is cleared to 0. Be sure to clear the receive error flags to 0 before starting
transmission. Note also that receive error flags cannot be cleared to 0 even if the RE bit is cleared
to 0.
Rev. 1.0, 03/01, page 191 of 280
13.8.4
Receive Data Sampling Timing and Reception Margin in Asynchronous Mode
In asynchronous mode, the SCI3 operates on a basic clock with a frequency of 16 times the
transfer rate. In reception, the SCI3 samples the falling edge of the start bit using the basic clock,
and performs internal synchronization. Receive data is latched internally at the rising edge of the
8th pulse of the basic clock as shown in figure 13-19. Thus, the reception margin in asynchronous
mode is given by formula (1) below.
1
D – 0.5
M = (0.5 –
)–
– (L – 0.5) F × 100(%)
2N
N
... Formula (1)
Where N
D
L
F
: Ratio of bit rate to clock (N = 16)
: Clock duty (D = 0.5 to 1.0)
: Frame length (L = 9 to 12)
: Absolute value of clock rate deviation
Assuming values of F (absolute value of clock rate deviation) = 0 and D (clock duty) = 0.5 in
formula (1), the reception margin can be given by the formula.
M = {0.5 – 1/(2 × 16)} × 100 [%] = 46.875%
However, this is only the computed value, and a margin of 20% to 30% should be allowed for in
system design.
16 clocks
8 clocks
0
7
15 0
7
15 0
Internal basic
clock
Receive data
(RxD)
Start bit
D0
D1
Synchronization
sampling timing
Data sampling
timing
Figure 13-19 Receive Data Sampling Timing in Asynchronous Mode
Rev. 1.0, 03/01, page 192 of 280
Section 14 A/D Converter
This LSI includes a successive approximation type 10-bit A/D converter that allows up to four
analog input channels to be selected. The Block diagram of the A/D converter is shown in figure
14-1.
14.1
Features
• 10-bit resolution
• Four input channels
• Conversion time: at least 4.4 µs per channel (at 16 MHz operation)
• Two operating modes
Single mode: Single-channel A/D conversion
Scan mode: Continuous A/D conversion on 1 to 4 channels
• Four data registers
Conversion results are held in a 16-bit data register for each channel
• Sample and hold function
• Two methods conversion start
Software
External trigger signal
• Interrupt request
An A/D conversion end interrupt request (ADI) can be generated
Rev. 1.0, 03/01, page 193 of 280
Module data bus
Analog multiplexer
10-bit D/A
AN0
AN1
AN2
AN3
Legend
ADCR
ADCSR
ADDRA
ADDRB
ADDRC
ADDRD
:
:
:
:
:
:
Bus interface
Successive approximations
register
AVCC
Internal data bus
A
D
D
R
A
A
D
D
R
B
A
D
D
R
C
A
D
D
R
D
A
D
C
S
R
A
D
C
R
+
ø/4
Control circuit
Comparator
Sample-andhold circuit
A/D control register
A/D control/status register
A/D data register A
A/D data register B
A/D data register C
A/D data register D
Figure 14-1 Block Diagram of A/D Converter
Rev. 1.0, 03/01, page 194 of 280
ø/8
ADI
interrupt request
14.2
Input/Output Pins
Table 14-1 summarizes the input pins used by the A/D converter.
Table 14-1 Pin Configuration
Pin Name
Symbol
I/O
Function
Analog power supply pin
AVCC
Input
Analog block power supply and reference
voltage
Analog input pin 0
AN0
Input
analog input pins
Analog input pin 1
AN1
Input
Analog input pin 2
AN2
Input
Analog input pin 3
AN3
Input
A/D external trigger input
pin
ADTRG
Input
External trigger input pin for starting A/D
conversion
Rev. 1.0, 03/01, page 195 of 280
14.3
Register Description
The A/D converter has the following registers. For details on register addresses, refer to appendix
B, Internal I/O Register.
• A/D data register A (ADDRA)
• A/D data register B (ADDRB)
• A/D data register C (ADDRC)
• A/D data register D (ADDRD)
• A/D control/status register (ADCSR)
• A/D control register (ADCR)
14.3.1
A/D Data Registers A to D (ADDRA to ADDRD)
There are four 16-bit read-only ADDR registers; ADDRA to ADDRD, used to store the results of
A/D conversion. The ADDR registers, which store a conversion result for each channel, are
shown in table 14-2.
The converted 10-bit data is stored in bits 6 to 15. The lower 6 bits are always read as 0.
The data bus between the CPU and the A/D converter is 8 bits wide. The upper byte can be read
directly from the CPU, however the lower byte should be read via a temporary register. The
temporary register contents are transferred from the ADDR when the upper byte data is read.
When reading ADDR, read the upper bytes only or read in word units. ADDR is initialized to
H'0000.
Table 14-2 Analog Input Channels and Corresponding ADDR Registers
Analog Input Channel
A/D Data Register to Be Stored the Results of A/D Conversion
AN0
ADDRA
AN1
ADDRB
AN2
ADDRC
AN3
ADDRD
Rev. 1.0, 03/01, page 196 of 280
14.3.2
A/D Control/Status Register (ADCSR)
ADCSR consists of the control bits and conversion end status bits of the A/D converter.
Bit
Bit Name
Initial Value
R/W
Description
7
ADF
0
R/W
A/D End Flag
[Setting conditions]
•
When A/D conversion ends in single mode
•
When A/D conversion ends on all the channels
selected in scan mode
[Clearing conditions]
•
6
ADIE
0
R/W
When 0 is written after reading ADF = 1
A/D Interrupt Enable
A/D conversion end interrupt (ADI) request enabled
by ADF when 1 is set
5
ADST
0
R/W
A/D Start
Clearing this bit to 0 stops A/D conversion, and the
A/D converter enters the wait state.
Setting this bit to 1 starts A/D conversion. In single
mode, this bits is cleared to 0 automatically when
conversion on the specified channel is complete. In
scan mode, conversion continues sequentially on
the specified channels until this bit is cleared to 0
by software, a reset, or a transition to standby
mode.
4
SCAN
0
R/W
Scan Mode
Selects single mode or scan mode as the A/D
conversion operating mode.
0: Single mode
1: Scan mode
3
CKS
0
R/W
Clock Select
Selects the A/D conversions time
0: Conversion time = 134 states (max.)
1: Conversion time = 70 states (max.)
Clear the ADST bit to 0 before switching the
conversion time.
Rev. 1.0, 03/01, page 197 of 280
Bit
Bit Name
Initial Value
R/W
Description
2
CH2
0
R/W
Channel Select 0 to 2
1
CH1
0
R/W
Select analog input channels.
0
CH0
0
R/W
When SCAN = 0
When SCAN = 1
000: AN0
000: AN0
001: AN1
001: AN0 to AN1
010: AN2
010: AN0 to AN2
011: AN3
011: AN0 to AN3
14.3.3
A/D Control Register (ADCR)
The ADCR enables A/D conversion started by an external trigger signal.
Bit
Bit Name
Initial Value
R/W
Description
7
TRGE
0
R/W
Trigger Enable
A/D conversion is started at the falling edge and
the rising edge of the external trigger signal
(ADTRG) when this bit is set to 1.
The selection between the falling edge and rising
edge of the external trigger pin (ADTRG) comforms
to the WPEG5 bit in the interrupt edge select
register 2(IEGR2)
6
—
1
—
Reserved
5
—
1
—
4
—
1
—
These bits are always read as 1 and cannot be
modified.
3
—
1
—
2
—
1
—
1
—
1
—
0
—
0
R/W
Reserved
Do not set this bit to 1, though the bit is
readable/writable.
Rev. 1.0, 03/01, page 198 of 280
14.4
Operation
The A/D converter operates by successive approximation with 10-bit resolution. It has two
operating modes; single mode and scan mode. When changing the operating mode or analog input
channel, in order to prevent incorrect operation, first clear the bit ADST to 0 in ADCSR. The
ADST bit can be set at the same time as the operating mode or analog input channel is changed.
14.4.1
Single Mode
In single mode, A/D conversion is performed once for the analog input on the specified single
channel as follows:
1.
A/D conversion is started from the first channel when the ADST bit in ADCSR is set to 1,
according to software or external trigger input.
2.
When A/D conversion is completed, the result is transferred to the corresponding A/D data
register to the channel.
3.
On completion of conversion, the ADF bit in ADCSR is set to 1. If the ADIE bit is set to 1 at
this time, an ADI interrupt request is generated.
4.
The ADST bit remains set to 1 during A/D conversion. When A/D conversion ends, the
ADST bit is automatically cleared to 0 and the A/D converter enters the wait state.
14.4.2
Scan Mode
In scan mode, A/D conversion is performed sequentially for the analog input on the specified
channels (four channels maximum) as follows:
1. When the ADST bit is set to 1 by software, or external trigger input, A/D conversion starts on
the first channel in the group.
2. When A/D conversion for each channel is completed, the result is sequentially transferred to
the A/D data register corresponding to each channel.
3. When conversion of all the selected channels is completed, the ADF flag in ADCSR is set to 1.
If the ADIE bit is set to 1 at this time, an ADI interrupt is requested after A/D conversion ends.
Conversion of the first channel in the group starts again.
4. Steps [2] to [3] are repeated as long as the ADST bit remains set to 1. When the ADST bit is
cleared to 0, A/D conversion stops and the A/D converter enters the wait state.
Rev. 1.0, 03/01, page 199 of 280
14.4.3
Input Sampling and A/D Conversion Time
The A/D converter has a built-in sample-and-hold circuit. The A/D converter samples the analog
input when the A/D conversion start delay time (tD) has passed after the ADST bit is set to 1, then
starts conversion. Figure 14-2 shows the A/D conversion timing. Table 14-3 shows the A/D
conversion time.
As indicated in figure 14-2, the A/D conversion time includes tD and the input sampling time. The
length of tD varies depending on the timing of the write access to ADCSR. The total conversion
time therefore varies within the ranges indicated in table 14-3.
In scan mode, the values given in table 14-3 apply to the first conversion time. In the second and
subsequent conversions, the conversion time is 128 states (fixed) when CKS = 0 and 66 states
(fixed) when CKS = 1.
(1)
ø
Address
(2)
Write signal
Input sampling
timing
ADF
tD
tSPL
tCONV
Legend
(1)
: ADCSR write cycle
(2)
: ADCSR address
tD
: A/D conversion start delay
tSPL : Input sampling time
tCONV : A/D conversion time
Figure 14-2 A/D Conversion Timing
Rev. 1.0, 03/01, page 200 of 280
Table 14-3 A/D Conversion Time (Single Mode)
CKS = 0
CKS = 1
Item
Symbol
Min
Typ
Max
Min
Typ
Max
A/D conversion start delay
tD
6
—
9
4
—
5
Input sampling time
tSPL
—
31
—
—
15
—
A/D conversion time
tCONV
131
Note: All values represent the number of states.
14.4.4
External Trigger Input Timing
A/D conversion can also be started by an external trigger input. When the TRGE bit is set to 1 in
ADCR, external trigger input is enabled at the ADTRG pin. A falling edge at the ADTRG input
pin sets the ADST bit to 1 in ADCSR, starting A/D conversion. Other operations, in both single
and scan modes, are the same as when the bit ADST has been set to 1 by software. Figure 14-3
shows the timing.
ø
Internal trigger signal
ADST
A/D conversion
Figure 14-3 External Trigger Input Timing
Rev. 1.0, 03/01, page 201 of 280
14.5
A/D Conversion Precision Definitions
This LSI's A/D conversion precision definitions are given below.
• Resolution
The number of A/D converter digital output codes
• Quantization error
The deviation inherent in the A/D converter, given by 1/2 LSB (see figure 14-4).
• Offset error
The deviation of the analog input voltage value from the ideal A/D conversion characteristic
when the digital output changes from the minimum voltage value 0000000000 to 0000000001
(see figure 14-5).
• Full-scale error
The deviation of the analog input voltage value from the ideal A/D conversion characteristic
when the digital output changes from 1111111110 to 1111111111 (see figure 14-5).
• Absolute precision
The deviation between the digital value and the analog input value. Includes offset error, fullscale error, quantization error, and nonlinearity error.
Digital output
Ideal A/D conversion
characteristic
111
110
101
100
011
010
Quantization error
001
000
1
8
2
8
3
8
4
8
5
8
6
8
7 FS
8
Analog
input voltage
Figure 14-4 A/D Conversion Precision Definitions (1)
Rev. 1.0, 03/01, page 202 of 280
Full-scale error
Digital output
Ideal A/D conversion
characteristic
Nonlinearity
error
Actual A/D conversion
characteristic
Offset error
FS
Analog
input voltage
Figure 14-5 A/D Conversion Precision Definitions (2)
14.6
14.6.1
Usage Notes
Permissible Signal Source Impedance
This LSI's analog input is designed such that conversion precision is guaranteed for an input signal
for which the signal source impedance is 5 kΩ or less. This specification is provided to enable the
A/D converter's sample-and-hold circuit input capacitance to be charged within the sampling time;
if the sensor output impedance exceeds 5 kΩ, charging may be insufficient and it may not be
possible to guarantee A/D conversion precision. However, for A/D conversion in single mode with
a large capacitance provided externally, the input load will essentially comprise only the internal
input resistance of 10 kΩ, and the signal source impedance is ignored. However, as a low-pass
filter effect is obtained in this case, it may not be possible to follow an analog signal with a large
differential coefficient (e.g., 5 mV/µs or greater) (see figure 14-6). When converting a high-speed
analog signal, a low-impedance buffer should be inserted.
14.6.2
Influences on Absolute Precision
Adding capacitance results in coupling with GND, and therefore noise in GND may adversely
affect absolute precision. Be sure to make the connection to an electrically stable GND.
Care is also required to ensure that filter circuits do not interfere with digital signals or act as
antennas on the mounting board.
Rev. 1.0, 03/01, page 203 of 280
This LSI
Sensor output
impedance
to 5 k
A/D converter
equivalent circuit
10 k
Sensor input
Low-pass
filter
C to 0.1 F
Cin =
15 pF
Figure 14-6 Analog Input Circuit Example
Rev. 1.0, 03/01, page 204 of 280
20 pF
Section 15 Power Supply Circuit
This LSI incorporates an internal power supply step-down circuit. Use of this circuit enables the
internal power supply to be fixed at a constant level of approximately 3.0 V, independently of the
voltage of the power supply connected to the external V pin. As a result, the current consumed
when an external power supply is used at 3.0 V or above can be held down to virtually the same
low level as when used at approximately 3.0 V. If the external power supply is 3.0 V or below, the
internal voltage will be practically the same as the external voltage. It is, of course, also possible
to use the same level of external power supply voltage and internal power supply voltage without
using the internal power supply step-down circuit.
CC
15.1
When Using the Internal Power Supply Step-Down Circuit
Connect the external power supply to the V pin, and connect a capacitance of approximately 0.1
µF between V and V , as shown in figure 15-1. The internal step-down circuit is made effective
simply by adding this external circuit. In the external circuit interface, the external power supply
voltage connected to V and the GND potential connected to V are the reference levels. For
example, for port input/output levels, the V level is the reference for the high level, and the V
level is that for the low level. The A/D converter analog power supply is not affected by internal
step-down processing.
CC
CL
CC
CC
SS
CC
SS
VCC
Step-down circuit
Internal
logic
VCC = 3.0 to 5.5 V
VCL
Stabilization
capacitance
(approx. 0.1 µF)
Internal
power
supply
VSS
Figure 15-1 Power Supply Connection when Internal Step-Down Circuit Is Used
Rev. 1.0, 03/01, page 205 of 280
15.2
When Not Using the Internal Power Supply Step-Down Circuit
When the internal power supply step-down circuit is not used, connect the external power supply
to the V pin and V pin, as shown in figure 15-2. The external power supply is then input
directly to the internal power supply. The permissible range for the power supply voltage is 3.0 V
to 3.6 V. Operation cannot be guaranteed if a voltage outside this range (less than 3.0 V or more
than 3.6 V) is input.
CL
CC
VCC
Step-down circuit
Internal
logic
VCC = 3.0 to 3.6 V
VCL
Internal
power
supply
VSS
Figure 15-2 Power Supply Connection when Internal Step-Down Circuit Is Not Used
Rev. 1.0, 03/01, page 206 of 280
Section 16 Electrical Characteristics
16.1
Absolute Maximum Ratings
Table 16-1 Absolute Maximum Ratings
Item
Symbol
Value
Unit
Note
Power supply voltage
VCC
–0.3 to +7.0
V
*
Analog power supply voltage
AVCC
–0.3 to +7.0
V
*
Input voltage
VIN
–0.3 to VCC +0.3
V
*
–0.3 to AVCC +0.3
V
*
Ports other than Port B
Port B
Operating temperature
Topr
–20 to +75
°C
*
Storage temperature
Tstg
–55 to +125
°C
*
Note: * Permanent damage may result if maximum ratings are exceeded. Normal operation should
be under the conditions specified in Electrical Characteristics. Exceeding these values can
result in incorrect operation and reduced reliability.
16.2
Electrical Characteristics
16.2.1
Power Supply Voltage and Operating Ranges
Power Supply Voltage and Oscillation Frequency Range
øOSC (MHz)
øW (kHz)
16.0
32.768
10.0
2.0
3.0
4.0
5.5
• AVCC = 3.3 V to 5.5 V
• Active mode
• Sleep mode
VCC (V)
3.0
4.0
5.5
VCC (V)
• AVCC = 3.3 V to 5.5 V
• All operating modes
Rev. 1.0, 03/01, page 207 of 280
Power Supply Voltage and Operating Frequency Range
ø (MHz)
16.0
10.0
1.0
3.0
4.0
5.5
VCC (V)
• AVCC = 3.3 V to 5.5 V
• Active mode
• Sleep mode
(When MA2 = 0 in SYSCR2)
ø (kHz)
2000
1250
78.125
3.0
4.0
5.5
VCC (V)
• AVCC = 3.3 V to 5.5 V
• Active mode
• Sleep mode
(When MA2 = 1 in SYSCR2)
Analog Power Supply Voltage and A/D Converter Accuracy Guarantee Range
ø (MHz)
16.0
10.0
2.0
3.3
4.0
• VCC = 3.0 V to 5.5 V
• Active mode
• Sleep mode
Rev. 1.0, 03/01, page 208 of 280
5.5
AVCC (V)
16.2.2
DC Characteristics
Table 16-2 DC Characteristics (1)
VCC = 3.0 V to 5.5 V, VSS = 0.0 V, Ta = –20°C to +75°C unless otherwise indicated.
Values
Item
Symbol
Applicable Pins
Input high
voltage
VIH
Input low
voltage
VIL
Test Condition
Min
Typ
Max
Unit
RES,
VCC = 4.0 V to 5.5 VCC×0.8
WKP0, WKP5,
V
IRQ0 to IRQ3,
ADTRG,TMRIV,
TMCIV, FTCI,
VCC×0.9
FTIOA to FTIOD,
SCK3, TRGV
—
VCC + 0.3
V
—
VCC + 0.3
RXD,
P12 to P10,
P17 to P14,
P22 to P20,
P57 to P50,
P76 to P74,
P84 to P80
VCC = 4.0 V to 5.5 VCC×0.7
V
—
VCC + 0.3
VCC×0.8
—
VCC + 0.3
PB3 to PB0
VCC = 4.0 V to 5.5 VCC×0.7
V
—
AVCC + 0.3 V
VCC×0.8
—
AVCC + 0.3
OSC1
VCC = 4.0 V to 5.5 VCC – 0.5
V
—
VCC + 0.3
VCC – 0.3
—
VCC + 0.3
—
VCC×0.2
—
VCC×0.1
RES,
VCC = 4.0 V to 5.5 –0.3
WKP0 to WKP5, V
IRQ0, IRQ3,
ADTRG,TMRIV,
TMCIV, FTCI,
–0.3
FTIOA to FTIOD,
SCK3, TRGV
RXD,
P12 to P10,
P17 to P14,
P22 to P20,
P55 to P50,
P76 to P74,
P84 to P80,
PB3 to PB0
VCC = 4.0 V to 5.5 –0.3
V
—
VCC×0.3
–0.3
—
VCC×0.2
OSC1
VCC = 4.0 V to 5.5 –0.3
V
—
0.5
–0.3
—
0.3
Notes
V
V
V
V
V
Rev. 1.0, 03/01, page 209 of 280
Values
Item
Symbol
Applicable Pins
Test Condition
Output
high
voltage
VOH
P12 to P10,
P17 to P14,
P22 to P20,
VCC = 4.0 V to 5.5 VCC – 1.0
V
P57 to P50,
P76 to P74,
P84 to P80,
–IOH = 0.1 mA
P12 to P10,
P17 to P14,
P22 to P20,
VCC = 4.0 V to 5.5 —
V
P55 to P50,
P76 to P74,
IOL = 0.4 mA
P84 to P80
Output
low
voltage
VOL
Min
Typ
Max
Unit
—
—
V
—
—
—
0.6
—
—
0.4
VCC = 4.0 V to 5.5 —
V
—
1.5
—
1.0
—
0.4
—
0.4
–IOH = 1.5 mA
VCC – 0.5
IOL = 1.6 mA
IOL = 20.0 mA
VCC = 4.0 V to 5.5 —
V
IOL = 10.0 mA
VCC = 4.0 V to 5.5 —
V
IOL = 1.6 mA
IOL = 0.4 mA
Rev. 1.0, 03/01, page 210 of 280
V
—
V
Notes
Values
Item
Symbol
Applicable Pins
Test Condition
Min
Typ
Max
Unit
Input/
output
leakage
current
| IIL |
OSC1, RES,
WKP0, WKP5,
IRQ0 to IRQ3,
ADTRG, TRGV,
TMRIV, TMCIV,
FTCI, FTIOA to
FTIOD, RXD,
SCK3
VIN = 0.5 V to
(VCC – 0.5 V)
—
—
1.0
µA
P12 to P10,
P17 to P14,
P22 to P20,
P57 to P50,
P76 to P74,
P84 to P80,
VIN = 0.5 V to
(VCC – 0.5 V)
—
—
1.0
µA
PB3 to PB0
VIN = 0.5 V to
(AVCC – 0.5 V)
—
—
1.0
µA
P12 to P10,
P17 to P14,
P55 to P50
VCC = 5.0 V,
VIN = 0.0 V
50.0
—
300.0
µA
VCC = 3.0 V,
VIN = 0.0 V
—
60.0
—
All input pins
except power
supply pins
f = 1 MHz,
VIN = 0.0 V,
Ta = 25°C
—
—
15.0
pF
Active
IOPE1
mode
current
dissipation
VCC
Active mode 1
VCC = 5.0 V,
fOSC = 16 MHz
—
15.0
22.5
mA
Active mode 1
VCC = 3.0 V,
fOSC = 10 MHz
—
8.0
—
IOPE2
VCC
Active mode 2
VCC = 5.0 V,
fOSC = 16 MHz
—
1.8
2.7
Active mode 2
VCC = 3.0 V,
fOSC = 10 MHz
—
1.2
—
Pull-up
MOS
current
–Ip
Input
capacitance
Cin
Notes
Reference
value
*
*
Reference
value
mA
*
*
Reference
value
Rev. 1.0, 03/01, page 211 of 280
Values
Applicable Pins
Test Condition
Min
Typ
Max
Unit
Notes
Sleep
ISLEEP1
mode
current
dissipation
Item
Symbol
VCC
Sleep mode 1
VCC = 5.0 V,
fOSC = 16 MHz
—
11.5
17.0
mA
*
Sleep mode 1
VCC = 3.0 V,
fOSC = 10 MHz
—
6.5
—
ISLEEP2
VCC
Sleep mode 2
VCC = 5.0 V,
fOSC = 16 MHz
—
1.7
2.5
Sleep mode 2
VCC = 3.0 V,
fOSC = 10 MHz
—
1.1
—
—
5.0
µA
—
—
V
Standby
ISTBY
mode
current
dissipation
VCC
RAM data
retaining
voltage
VCC
VRAM
32-kHz crystal
—
oscillator not used
2.0
*
Reference
value
mA
*
*
Reference
value
*
Note: * Pin states during current dissipation measurement are given below (excluding current in the
pull-up MOS transistors and output buffers).
Rev. 1.0, 03/01, page 212 of 280
Mode
RES Pin
Internal State
Other Pins
Oscillator Pins
Active mode 1
VCC
Operates
VCC
System clock oscillator:
ceramic or crystal
Active mode 2
Operates
(ø/64)
Sleep mode 1
VCC
Only timers operate
Sleep mode 2
VCC
Only timers operate
(ø/64)
Standby mode
VCC
CPU and timers
both stop
VCC
System clock oscillator:
ceramic or crystal
Table 16-2 DC Characteristics (2)
VCC = 3.0 V to 5.5 V, VSS = 0.0 V, Ta = –20°C to +75°C, unless otherwise indicated.
Values
Applicable
Item
Symbol
Pins
Test Condition Min
Typ
Max
Unit
Allowable output low
current (per pin)
IOL
Output pins
except port 8
VCC = 4.0 V to
5.5 V
—
—
2.0
mA
—
—
20.0
Port 8
Allowable output low
current (total)
Allowable output high
∑IOL
–IOH
Port 8
—
—
10.0
Output pins
except port 8
—
—
0.5
—
—
40.0
Output pins
except port 8
VCC = 4.0 V to
5.5 V
Port 8
—
—
80.0
Output pins
except port 8
—
—
20.0
Port 8
—
—
40.0
—
—
2.0
—
—
0.2
—
—
30.0
—
—
8.0
All output pins
VCC = 4.0 V to
5.5 V
current (per pin)
Allowable output high
current (total)
∑(–IOH)
All output pins
VCC = 4.0 V to
5.5 V
mA
mA
mA
Rev. 1.0, 03/01, page 213 of 280
16.2.3
AC Characteristics
Table 16-3 AC Characteristics
VCC = 3.0 V to 5.5 V, VSS = 0.0 V, Ta = –20°C to +75°C, unless otherwise specified.
Item
Symbol
System clock
oscillation
frequency
fOSC
System clock (ø)
cycle time
tcyc
Applicable
Pins
OSC1,
OSC2
Values
Test Condition
Min
VCC = 4.0 V to 5.5 V 2.0
Typ
Max
Unit
Reference
Figure
—
16.0
MHz
*1
tOSC
*2
2.0
Instruction cycle
time
10.0
1
—
64
—
—
12.8
µs
2
—
—
tcyc
trc
OSC1,
OSC2
—
—
10.0
ms
Oscillation
trc
stabilization time
(ceramic oscillator)
OSC1,
OSC2
—
—
5.0
ms
External clock
high width
tCPH
OSC1
ns
External clock
low width
tCPL
External clock
rise time
External clock
fall time
Oscillation
stabilization time
(crystal oscillator)
VCC = 4.0 V to 5.5 V 25.0
—
—
40.0
—
—
OSC1
VCC = 4.0 V to 5.5 V 25.0
—
—
40.0
—
—
tCPr
OSC1
VCC = 4.0 V to 5.5 V —
—
10.0
—
—
15.0
tCPf
OSC1
VCC = 4.0 V to 5.5 V —
—
10.0
—
—
15.0
Rev. 1.0, 03/01, page 214 of 280
ns
ns
ns
Figure 16-1
Item
Symbol
Applicable
Pins
RES pin low
width
tREL
RES
Values
Typ
Max
Unit
Reference
Figure
At power-on and in trc
modes other than
those below
—
—
ms
Figure 16-2
In active mode and 10
sleep mode
operation
—
—
tcyc
Test Condition
Min
Input pin high
width
tIH
IRQ0 , IRQ3,
WKP0 to
WKP5,
TMCIV,
TMRIV,
TRGV,
ADTRG,
FTCI,
FTIOA to
FTIOD
2
—
—
tcyc
Input pin low
width
tIL
IRQ0, IRQ3,
WKP0 to
WKP5,
TMCIV,
TMRIV,
TRGV,
ADTRG,
FTCI,
FTIOA to
FTIOD
2
—
—
tcyc
Figure 16-3
Notes: 1. When an external clock is input, the minimum system clock oscillator frequency is
1.0 MHz.
2. Determined by MA2 to MA0 system control register 2 (SYSCR2).
Rev. 1.0, 03/01, page 215 of 280
Table 16-4 Serial Interface (SCI3) Timing
VCC = 3.0 V to 5.5 V, VSS = 0.0 V, Ta = –20°C to +75°C, unless otherwise specified.
Item
Input
clock
cycle
Asynchronous
Symbol
Applicable
Pins
tScyc
SCK3
Values
Test Condition
Synchronous
Input clock pulse
width
tSCKW
SCK3
Transmit data delay
time (clocked
synchronous)
tTXD
TXD
Receive data setup
time (clocked
synchronous)
tRXS
Receive data hold
time (clocked
synchronous)
tRXH
RXD
RXD
Rev. 1.0, 03/01, page 216 of 280
VCC = 4.0 V to 5.5 V
VCC = 4.0 V to 5.5 V
VCC = 4.0 V to 5.5 V
Min Typ Max Unit
Reference
Figure
4
—
—
Figure 16-4
6
—
—
0.4
—
0.6
tScyc
—
—
1
tcyc
—
—
1
62.5 —
—
100. —
0
—
62.5 —
—
100. —
0
—
tcyc
ns
ns
Figure 16-5
16.2.4
A/D Converter Characteristics
Table 16-5 A/D Converter Characteristics
VCC = 3.0 V to 5.5 V, VSS = 0.0 V, Ta = –20°C to +75°C, unless otherwise specified.
Item
Symbol
Applicable
Pins
Test
Condition
Values
Min
Typ Max
Unit
Reference
Figure
V
*1
Analog power supply AVCC
voltage
AVCC
3.3
VCC
5.5
Analog input voltage
AN3 to
AN0
VSS – 0.3
—
AVCC + 0.3 V
—
2.0
mA
µA
*2
Reference
value
*3
AVIN
Analog power supply AIOPE
current
AVCC
AVCC = 5.0 V —
fOSC =
16 MHz
AISTOP1
AVCC
—
50
—
AISTOP2
AVCC
—
—
5.0
µA
Analog input
capacitance
CAIN
AN3 to
AN0
—
—
30.0
pF
Allowable signal
source impedance
RAIN
AN3 to
AN0
—
—
5.0
kΩ
10
10
10
bit
—
—
tcyc
Resolution (data
length)
Conversion time
(single mode)
AVCC = 3.3 V 134
to 5.5 V
Nonlinearity error
—
—
±7.5
LSB
Offset error
—
—
±7.5
LSB
Full-scale error
—
—
±7.5
LSB
Quantization error
—
—
±0.5
LSB
Absolute accuracy
—
—
±8.0
LSB
AVCC = 4.0 V 70
to 5.5 V
—
—
tcyc
—
—
±7.5
LSB
Conversion time
(single mode)
Nonlinearity error
Offset error
—
—
±7.5
LSB
Full-scale error
—
—
±7.5
LSB
Quantization error
—
—
±0.5
LSB
Absolute accuracy
—
—
±8.0
LSB
Rev. 1.0, 03/01, page 217 of 280
Item
Symbol
Applicable
Pins
Conversion time
(single mode)
Test
Condition
Values
Min
AVCC = 4.0 V 134
to 5.5 V
Typ Max
Unit
—
—
tcyc
Nonlinearity error
—
—
±3.5
LSB
Offset error
—
—
±3.5
LSB
Full-scale error
—
—
±3.5
LSB
Quantization error
—
—
±0.5
LSB
Absolute accuracy
—
—
±4.0
LSB
Reference
Figure
Notes: 1. Set AVCC = VCC when the A/D converter is not used.
2. AISTOP1 is the current in active and sleep modes while the A/D converter is idle.
3. AISTOP2 is the current at reset in standby and in subsleep mode while the A/D converter is
idle.
16.2.5
Watchdog Timer
Table 16-6 Watchdog Timer Characteristics
VCC = 3.0 V to 5.5 V, VSS = 0.0 V, Ta = –20°C to +75°C, unless otherwise specified.
Item
Symbol
On-chip
oscillator
overflow
time
tOVF
Applicable
Pins
Test
Condition
Values
Min
Typ
Max
Unit
Reference
Figure
0.2
0.4
—
s
*
Note: * Shows the time to count from 0 to 255, at which point an internal reset is generated, when
the internal oscillator is selected.
Rev. 1.0, 03/01, page 218 of 280
16.2.6
Flash Memory Characteristics (Preliminary)
Table 16-7 Flash Memory Characteristics (Preliminary)
VCC = 3.0 V to 5.5 V, VSS = 0.0 V, Ta = –20°C to +75°C, unless otherwise specified.
Item
1
2
Programming time (per 128 bytes)* * *
1
3
Erase time (per block) * * *
4
6
Values
Test
Symbol Condition
Min
Typ
Max
Unit
tP
—
7
—
ms
tE
—
100
—
ms
Reprogramming count
NWEC
—
—
100
Times
Programming Wait time after SWE
1
bit setting*
x
1
—
—
µs
Wait time after PSU
1
bit setting*
y
50
—
—
µs
Wait time after P bit setting
z1
1≤n≤6
28
30
32
µs
z2
7 ≤ n ≤ 1000
198
200
202
µs
z3
Additionalprogramming
8
10
12
µs
1
**
4
α
5
—
—
µs
1
Wait time after PSU bit clear* β
5
—
—
µs
γ
4
—
—
µs
1
Wait time after dummy write* ε
2
—
—
µs
Wait time after P bit clear*
1
Wait time after PV
1
bit setting*
η
2
—
—
µs
Wait time after SWE
1
bit clear*
θ
100
—
—
µs
Maximum
1 4 5
programming count* * *
N
—
—
1000
Times
Wait time after PV bit clear*
1
Rev. 1.0, 03/01, page 219 of 280
Erase
Values
Test
Symbol Condition
Min
Typ
Max
Unit
Wait time after SWE
1
bit setting*
x
1
—
—
µs
Wait time after ESU
1
bit setting*
y
100
—
—
µs
Wait time after E bit
1 6
setting* *
z
10
—
100
ms
Item
α
10
—
—
µs
1
Wait time after ESU bit clear* β
10
—
—
µs
γ
20
—
—
µs
2
—
—
µs
η
4
—
—
µs
θ
100
—
—
µs
N
—
—
120
Times
Wait time after E bit clear*
1
Wait time after EV
1
bit setting*
1
Wait time after dummy write* ε
Wait time after EV bit clear*
Wait time after SWE
1
bit clear*
1
6
Maximum erase count* * *
7
1
Notes: 1. Make the time settings in accordance with the program/erase algorithms.
2. The programming time for 128 bytes. (Indicates the total time for which the P bit in flash
memory control register 1 (FLMCR1) is set. The program-verify time is not included.)
3. The time required to erase one block. (Indicates the time for which the E bit in flash
memory control register 1 (FLMCR1) is set. The erase-verify time is not included.)
4. Programming time maximum value (tP(MAX)) = wait time after P bit setting (z) ×
maximum number of writes (N)
5. Set the maximum number of writes (N) according to the actual set values of z1, z2, and
z3, so that it does not exceed the programming time maximum value (tP(MAX)). The
wait time after P bit setting (z1, z2) should be changed as follows according to the value
of the number of writes (n).
Number of writes (n)
1≤n≤6
z1 = 30 µs
7 ≤ n ≤ 1000 z2 = 200 µs
6. Erase time maximum value (tE(max)) = wait time after E bit setting (z) × maximum
number of erases (N)
7. Set the maximum number of erases (N) according to the actual set value of (z), so that
it does not exceed the erase time maximum value (tE(max)).
Rev. 1.0, 03/01, page 220 of 280
16.3
Operation Timing
t OSC
VIH
OSC1
VIL
t CPH
t CPL
t CPr
t CPf
Figure 16-1 System Clock Input Timing
VCC × 0.7
VCC
OSC1
tREL
VIL
VIL
tREL
Figure 16-2 RES Low Width Timing
,
to
FTCI
FTIOA to FTIOD
TMCIV, TMRIV
TRGV
VIH
VIL
t IL
t IH
Figure 16-3 Input Timing
Rev. 1.0, 03/01, page 221 of 280
t SCKW
SCK3
t Scyc
Figure 16-4 SCK3 Input Clock Timing
t Scyc
SCK3
VIH or VOH *
VIL or VOL *
t TXD
*
TXD
(transmit data)
VOH
VOL
*
t RXS
t RXH
RXD
(receive data)
Note:
* Output timing reference levels
Output high:
V OH= 2.0 V
Output low:
V OL= 0.8 V
Load conditions are shown in figure 16-6.
Figure 16-5 Serial Interface 3 Synchronous Mode Input/Output Timing
Rev. 1.0, 03/01, page 222 of 280
16.4
Output Load Circuit
VCC
2.4 kΩ
LSI output pin
30 pF
12 k Ω
Figure 16-6 Output Load Condition
Rev. 1.0, 03/01, page 223 of 280
Rev. 1.0, 03/01, page 224 of 280
Appendix A Instruction Set
A.1
Instruction List
Operand Notation
Symbol
Description
Rd
General (destination*) register
Rs
General (source*) register
Rn
General register*
ERd
General destination register (address register or 32-bit register)
ERs
General source register (address register or 32-bit register)
ERn
General register (32-bit register)
(EAd)
Destination operand
(EAs)
Source operand
PC
Program counter
SP
Stack pointer
CCR
Condition-code register
N
N (negative) flag in CCR
Z
Z (zero) flag in CCR
V
V (overflow) flag in CCR
C
C (carry) flag in CCR
disp
Displacement
→
Transfer from the operand on the left to the operand on the right, or transition from
the state on the left to the state on the right
+
Addition of the operands on both sides
–
Subtraction of the operand on the right from the operand on the left
×
Multiplication of the operands on both sides
÷
Division of the operand on the left by the operand on the right
∧
Logical AND of the operands on both sides
∨
Logical OR of the operands on both sides
⊕
Logical exclusive OR of the operands on both sides
¬
NOT (logical complement)
( ), < >
Contents of operand
Note: General registers include 8-bit registers (R0H to R7H and R0L to R7L) and 16-bit registers
(R0 to R7 and E0 to E7).
Rev. 1.0, 03/01, page 225 of 280
Symbol
Description
↔
Condition Code Notation
Changed according to execution result
*
Undetermined (no guaranteed value)
0
Cleared to 0
1
Set to 1
—
Not affected by execution of the instruction
∆
Varies depending on conditions, described in notes
Rev. 1.0, 03/01, page 226 of 280
Table A.1 Instruction Set
1. Data transfer instructions
Condition Code
MOV.B @(d:16, ERs), Rd
B
4
@(d:16, ERs) → Rd8
— —
MOV.B @(d:24, ERs), Rd
B
8
@(d:24, ERs) → Rd8
— —
MOV.B @ERs+, Rd
B
@ERs → Rd8
ERs32+1 → ERs32
— —
MOV.B @aa:8, Rd
B
2
@aa:8 → Rd8
— —
MOV.B @aa:16, Rd
B
4
@aa:16 → Rd8
— —
MOV.B @aa:24, Rd
B
6
@aa:24 → Rd8
— —
MOV.B Rs, @ERd
B
Rs8 → @ERd
— —
MOV.B Rs, @(d:16, ERd)
B
4
Rs8 → @(d:16, ERd)
— —
MOV.B Rs, @(d:24, ERd)
B
8
Rs8 → @(d:24, ERd)
— —
MOV.B Rs, @–ERd
B
ERd32–1 → ERd32
Rs8 → @ERd
— —
MOV.B Rs, @aa:8
B
2
Rs8 → @aa:8
— —
MOV.B Rs, @aa:16
B
4
Rs8 → @aa:16
— —
MOV.B Rs, @aa:24
B
6
Rs8 → @aa:24
— —
MOV.W #xx:16, Rd
W 4
#xx:16 → Rd16
— —
MOV.W Rs, Rd
W
Rs16 → Rd16
— —
MOV.W @ERs, Rd
W
@ERs → Rd16
— —
2
2
2
2
2
2
MOV.W @(d:16, ERs), Rd W
4
@(d:16, ERs) → Rd16
— —
MOV.W @(d:24, ERs), Rd W
8
@(d:24, ERs) → Rd16
— —
@ERs → Rd16
ERs32+2 → @ERd32
— —
2
MOV.W @ERs+, Rd
W
MOV.W @aa:16, Rd
W
4
@aa:16 → Rd16
— —
MOV.W @aa:24, Rd
W
6
@aa:24 → Rd16
— —
MOV.W Rs, @ERd
W
Rs16 → @ERd
— —
2
MOV.W Rs, @(d:16, ERd) W
4
Rs16 → @(d:16, ERd)
— —
MOV.W Rs, @(d:24, ERd) W
8
Rs16 → @(d:24, ERd)
— —
0 —
0 —
0 —
Advanced
— —
B
↔ ↔ ↔ ↔ ↔ ↔
@ERs → Rd8
MOV.B @ERs, Rd
↔ ↔ ↔ ↔ ↔ ↔
— —
B
C
0 —
↔ ↔ ↔ ↔ ↔ ↔ ↔
Rs8 → Rd8
MOV.B Rs, Rd
V
↔ ↔ ↔ ↔ ↔ ↔ ↔
Z
↔ ↔ ↔ ↔ ↔ ↔ ↔ ↔ ↔
I
↔ ↔ ↔ ↔ ↔ ↔ ↔ ↔ ↔
N
— —
Normal
—
@@aa
H
#xx:8 → Rd8
↔ ↔ ↔ ↔ ↔
2
@(d, PC)
Operation
@aa
@–ERn/@ERn+
@(d, ERn)
@ERn
2
Rn
B
No. of
States*1
↔ ↔ ↔ ↔ ↔
MOV MOV.B #xx:8, Rd
#xx
Mnemonic
Operand Size
Addressing Mode and
Instruction Length (bytes)
2
0 —
2
0 —
4
0 —
6
0 —
10
0 —
6
4
0 —
6
0 —
8
0 —
4
0 —
6
0 —
10
0 —
6
4
0 —
6
0 —
8
0 —
4
0 —
2
0 —
4
0 —
6
0 —
10
0 —
6
6
0 —
8
0 —
4
0 —
6
0 —
10
Rev. 1.0, 03/01, page 227 of 280
No. of
States*1
Condition Code
↔
↔
0 —
↔ ↔ ↔ ↔ ↔ ↔ ↔ ↔
↔ ↔ ↔ ↔ ↔ ↔ ↔ ↔
0 —
↔ ↔ ↔ ↔ ↔ ↔
↔ ↔ ↔ ↔ ↔ ↔
0 —
POP POP.W Rn
W
2 @SP → Rn16
SP+2 → SP
— —
↔ ↔ ↔
↔ ↔ ↔
0 —
POP.L ERn
L
4 @SP → ERn32
SP+4 → SP
— —
↔
0 —
PUSH PUSH.W Rn
W
2 SP–2 → SP
Rn16 → @SP
— —
0 —
PUSH.L ERn
L
4 SP–4 → SP
ERn32 → @SP
— —
0 —
MOVFPE @aa:16, Rd
B
2
MOV MOV.W Rs, @–ERd
W
MOV.W Rs, @aa:16
W
4
Rs16 → @aa:16
— —
MOV.W Rs, @aa:24
W
6
Rs16 → @aa:24
— —
MOV.L #xx:32, Rd
L
#xx:32 → Rd32
— —
MOV.L ERs, ERd
L
ERs32 → ERd32
— —
MOV.L @ERs, ERd
L
@ERs → ERd32
— —
MOV.L @(d:16, ERs), ERd
L
6
@(d:16, ERs) → ERd32
— —
MOV.L @(d:24, ERs), ERd
L
10
@(d:24, ERs) → ERd32
— —
MOV.L @ERs+, ERd
L
@ERs → ERd32
ERs32+4 → ERs32
— —
MOV.L @aa:16, ERd
L
6
@aa:16 → ERd32
— —
MOV.L @aa:24, ERd
L
8
@aa:24 → ERd32
— —
MOV.L ERs, @ERd
L
ERs32 → @ERd
— —
MOV.L ERs, @(d:16, ERd)
L
6
ERs32 → @(d:16, ERd)
— —
MOV.L ERs, @(d:24, ERd)
L
10
ERs32 → @(d:24, ERd)
— —
MOV.L ERs, @–ERd
L
ERd32–4 → ERd32
ERs32 → @ERd
— —
MOV.L ERs, @aa:16
L
6
ERs32 → @aa:16
— —
MOV.L ERs, @aa:24
L
8
ERs32 → @aa:24
— —
MOVFPE
MOVTPE
MOVTPE Rs, @aa:16
6
2
4
4
4
4
Rev. 1.0, 03/01, page 228 of 280
6
6
0 —
8
0 —
6
0 —
2
0 —
8
0 —
10
0 —
14
0 —
10
10
0 —
12
0 —
8
0 —
10
0 —
14
0 —
10
10
0 —
12
0 —
6
10
6
10
4
Cannot be used in
this LSI
Cannot be used in
this LSI
4
Cannot be used in
this LSI
Cannot be used in
this LSI
B
Advanced
— —
C
↔
ERd32–2 → ERd32
Rs16 → @ERd
V
↔
Z
↔
N
↔
H
↔
I
Normal
—
@@aa
@(d, PC)
Operation
@aa
@–ERn/@ERn+
@(d, ERn)
@ERn
Rn
#xx
Mnemonic
Operand Size
Addressing Mode and
Instruction Length (bytes)
2. Arithmetic instructions
Advanced
— (2)
↔ ↔ ↔ ↔ ↔
Normal
—
@@aa
@(d, PC)
@aa
@–ERn/@ERn+
@(d, ERn)
ERd32+ERs32 →
ERd32
ERd32+#xx:32 →
ERd32
↔
2
— (1)
2
2
(3)
↔ ↔
L
— (2)
Rd16+Rs16 → Rd16
↔ ↔ ↔ ↔ ↔
ADD.L ERs, ERd
6
— (1)
↔ ↔ ↔ ↔ ↔
L
Rd16+#xx:16 → Rd16
C
↔
ADD.L #xx:32, ERd
2
—
V
↔
W
Rd8+Rs8 → Rd8
Z
↔ ↔
ADD.W Rs, Rd
N
↔ ↔
W 4
H
—
↔ ↔ ↔ ↔ ↔
ADD.W #xx:16, Rd
I
Rd8+#xx:8 → Rd8
↔
B
Condition Code
Operation
↔ ↔
2
ADD.B Rs, Rd
@ERn
2
Rn
B
No. of
States*1
↔ ↔
ADD ADD.B #xx:8, Rd
#xx
Mnemonic
Operand Size
Addressing Mode and
Instruction Length (bytes)
2
— — — — — —
2
2
4
2
6
—
2
Rd8+Rs8 +C → Rd8
—
ADDS ADDS.L #1, ERd
L
2
ERd32+1 → ERd32
ADDS.L #2, ERd
L
2
ERd32+2 → ERd32
— — — — — —
2
ADDS.L #4, ERd
L
2
ERd32+4 → ERd32
— — — — — —
2
INC.B Rd
B
2
Rd8+1 → Rd8
— —
INC.W #1, Rd
W
2
Rd16+1 → Rd16
— —
INC.W #2, Rd
W
2
Rd16+2 → Rd16
— —
INC.L #1, ERd
L
2
ERd32+1 → ERd32
— —
INC.L #2, ERd
L
2
ERd32+2 → ERd32
— —
DAA
DAA Rd
B
2
Rd8 decimal adjust
→ Rd8
— *
SUB
SUB.B Rs, Rd
B
2
Rd8–Rs8 → Rd8
—
SUB.W #xx:16, Rd
W 4
Rd16–#xx:16 → Rd16
— (1)
SUB.W Rs, Rd
W
Rd16–Rs16 → Rd16
— (1)
SUB.L #xx:32, ERd
L
SUB.L ERs, ERd
L
↔ ↔ ↔ ↔ ↔
(3)
↔ ↔ ↔ ↔ ↔ ↔
2
—
2
—
2
—
2
—
2
—
2
* —
2
—
SUBS SUBS.L #1, ERd
L
2
ERd32–1 → ERd32
— — — — — —
2
SUBS.L #2, ERd
L
2
ERd32–2 → ERd32
— — — — — —
2
SUBS.L #4, ERd
L
2
ERd32–4 → ERd32
— — — — — —
2
B
2
Rd8–1 → Rd8
— —
DEC.W #1, Rd
W
2
Rd16–1 → Rd16
— —
DEC.W #2, Rd
W
2
Rd16–2 → Rd16
— —
Rd8–#xx:8–C → Rd8
—
(3)
(3)
↔ ↔ ↔
2
ERd32–ERs32 → ERd32 — (2)
↔ ↔
2
↔ ↔ ↔
DEC DEC.B Rd
ERd32–#xx:32 → ERd32 — (2)
6
↔ ↔ ↔
Rd8–Rs8–C → Rd8
SUBX.B Rs, Rd
B
↔
2
SUBX SUBX.B #xx:8, Rd
2
↔ ↔ ↔ ↔ ↔ ↔ ↔
2
B
↔ ↔ ↔ ↔ ↔ ↔ ↔
2
↔ ↔ ↔ ↔ ↔
INC
B
↔ ↔ ↔ ↔ ↔ ↔ ↔
ADDX.B Rs, Rd
↔ ↔ ↔ ↔ ↔ ↔
Rd8+#xx:8 +C → Rd8
B
ADDX ADDX.B #xx:8, Rd
4
2
6
2
2
2
—
2
—
2
—
2
Rev. 1.0, 03/01, page 229 of 280
No. of
States*1
Condition Code
Advanced
Z
V
C
↔ ↔ ↔
↔ ↔
Normal
N
—
2
—
2
2
ERd32–1 → ERd32
— —
L
2
ERd32–2 → ERd32
— —
DAS.Rd
B
2
Rd8 decimal adjust
→ Rd8
— *
* —
2
B
2
Rd8 × Rs8 → Rd16
(unsigned multiplication)
— — — — — —
14
W
2
Rd16 × Rs16 → ERd32
(unsigned multiplication)
— — — — — —
22
B
4
Rd8 × Rs8 → Rd16
(signed multiplication)
— —
W
4
Rd16 × Rs16 → ERd32
(signed multiplication)
— —
B
2
W
DIVXU DIVXU. B Rs, Rd
DIVXU. W Rs, ERd
DIVXS DIVXS. B Rs, Rd
DIVXS. W Rs, ERd
CMP CMP.B #xx:8, Rd
16
— —
24
Rd16 ÷ Rs8 → Rd16
(RdH: remainder,
RdL: quotient)
(unsigned division)
— — (6) (7) — —
14
2
ERd32 ÷ Rs16 → ERd32
(Ed: remainder,
Rd: quotient)
(unsigned division)
— — (6) (7) — —
22
B
4
Rd16 ÷ Rs8 → Rd16
(RdH: remainder,
RdL: quotient)
(signed division)
— — (8) (7) — —
16
W
4
ERd32 ÷ Rs16 → ERd32
(Ed: remainder,
Rd: quotient)
(signed division)
— — (8) (7) — —
24
Rd8–#xx:8
—
Rd8–Rs8
—
Rd16–#xx:16
— (1)
Rd16–Rs16
— (1)
ERd32–#xx:32
— (2)
ERd32–ERs32
— (2)
B
2
CMP.B Rs, Rd
B
CMP.W #xx:16, Rd
W 4
CMP.W Rs, Rd
W
CMP.L #xx:32, ERd
L
CMP.L ERs, ERd
L
2
2
6
Rev. 1.0, 03/01, page 230 of 280
2
↔ ↔ ↔ ↔ ↔ ↔
MULXS. W Rs, ERd
— —
↔ ↔ ↔ ↔ ↔ ↔
MULXS MULXS. B Rs, Rd
↔ ↔ ↔ ↔ ↔ ↔
MULXU. W Rs, ERd
↔ ↔
MULXU MULXU. B Rs, Rd
↔ ↔ ↔ ↔ ↔ ↔
DAS
↔
L
DEC.L #2, ERd
↔
DEC DEC.L #1, ERd
↔
H
↔
I
↔ ↔ ↔
—
@@aa
@(d, PC)
Operation
@aa
@–ERn/@ERn+
@(d, ERn)
@ERn
Rn
#xx
Mnemonic
Operand Size
Addressing Mode and
Instruction Length (bytes)
2
2
4
2
4
2
No. of
States*1
C
↔ ↔ ↔
NEG.L ERd
L 0–ERd32 → ERd32
2
—
EXTU EXTU.W Rd
W 0 → (<bits 15 to 8>
of Rd16)
2
— — 0
L 0 → (<bits 31 to 16>
of ERd32)
2
— — 0
W (<bit 7> of Rd16) →
(<bits 15 to 8> of Rd16)
2
— —
L (<bit 15> of ERd32) →
(<bits 31 to 16> of
ERd32)
2
— —
EXTU.L ERd
EXTS EXTS.W Rd
EXTS.L ERd
↔ ↔ ↔
—
2
0 —
2
↔
—
2
0 —
2
↔
2
W 0–Rd16 → Rd16
0 —
2
↔
B 0–Rd8 → Rd8
NEG.W Rd
NEG NEG.B Rd
Advanced
V
Normal
Z
↔ ↔ ↔
↔ ↔ ↔
N
↔ ↔ ↔ ↔
H
↔
I
↔
—
@@aa
@(d, PC)
Condition Code
@aa
@–ERn/@ERn+
@(d, ERn)
@ERn
Rn
Operation
#xx
Mnemonic
Operand Size
Addressing Mode and
Instruction Length (bytes)
0 —
2
2
2
Rev. 1.0, 03/01, page 231 of 280
3. Logic instructions
AND.B Rs, Rd
B
AND.W #xx:16, Rd
W 4
AND.W Rs, Rd
W
AND.L #xx:32, ERd
L
AND.L ERs, ERd
L
OR.B #xx:8, Rd
B
OR.B Rs, Rd
B
OR.W #xx:16, Rd
W 4
OR.W Rs, Rd
W
OR.L #xx:32, ERd
L
OR.L ERs, ERd
L
XOR.B #xx:8, Rd
B
XOR.B Rs, Rd
B
XOR.W #xx:16, Rd
W 4
XOR.W Rs, Rd
W
XOR.L #xx:32, ERd
L
XOR.L ERs, ERd
L
4
ERd32⊕ERs32 → ERd32 — —
NOT.B Rd
B
2
¬ Rd8 → Rd8
— —
NOT.W Rd
W
2
¬ Rd16 → Rd16
— —
NOT.L ERd
L
2
¬ Rd32 → Rd32
— —
Z
Rd8∧Rs8 → Rd8
— —
Rd16∧#xx:16 → Rd16
— —
Rd16∧Rs16 → Rd16
— —
4
2
2
2
6
4
2
2
2
ERd32∧ERs32 → ERd32 — —
Rd8⁄#xx:8 → Rd8
— —
Rd8⁄Rs8 → Rd8
— —
Rd16⁄#xx:16 → Rd16
— —
Rd16⁄Rs16 → Rd16
— —
ERd32⁄#xx:32 → ERd32
— —
ERd32⁄ERs32 → ERd32
— —
Rd8⊕#xx:8 → Rd8
— —
Rd8⊕Rs8 → Rd8
— —
Rd16⊕#xx:16 → Rd16
— —
Rd16⊕Rs16 → Rd16
— —
ERd32⊕#xx:32 → ERd32 — —
6
V
C
Advanced
I
Normal
—
@@aa
@(d, PC)
@aa
N
— —
ERd32∧#xx:32 → ERd32 — —
6
Rev. 1.0, 03/01, page 232 of 280
H
Rd8∧#xx:8 → Rd8
↔ ↔ ↔ ↔ ↔ ↔ ↔ ↔ ↔ ↔ ↔ ↔ ↔ ↔ ↔ ↔ ↔ ↔ ↔ ↔ ↔
2
Operation
↔ ↔ ↔ ↔ ↔ ↔ ↔ ↔ ↔ ↔ ↔ ↔ ↔ ↔ ↔ ↔ ↔ ↔ ↔ ↔ ↔
NOT
2
@(d, ERn)
2
@ERn
B
Rn
#xx
XOR
Condition Code
Operand Size
OR
No. of
States*1
AND.B #xx:8, Rd
Mnemonic
AND
@–ERn/@ERn+
Addressing Mode and
Instruction Length (bytes)
0 —
2
0 —
2
0 —
4
0 —
2
0 —
6
0 —
4
0 —
2
0 —
2
0 —
4
0 —
2
0 —
6
0 —
4
0 —
2
0 —
2
0 —
4
0 —
2
0 —
6
0 —
4
0 —
2
0 —
2
0 —
2
4. Shift instructions
W
2
SHAL.L ERd
L
2
SHAR SHAR.B Rd
B
2
SHAR.W Rd
W
2
SHAR.L ERd
L
2
SHLL SHLL.B Rd
B
2
SHLL.W Rd
W
2
SHLL.L ERd
L
2
SHLR SHLR.B Rd
B
2
SHLR.W Rd
W
2
SHLR.L ERd
L
2
ROTXL ROTXL.B Rd
B
2
ROTXL.W Rd
W
2
ROTXL.L ERd
L
2
B
2
ROTXR.W Rd
W
2
ROTXR.L ERd
L
2
ROTL ROTL.B Rd
B
2
ROTL.W Rd
W
2
ROTL.L ERd
L
2
ROTR ROTR.B Rd
B
2
ROTR.W Rd
W
2
ROTR.L ERd
L
2
ROTXR ROTXR.B Rd
C
0
MSB
LSB
Z
— —
— —
— —
C
MSB
— —
LSB
— —
— —
C
0
MSB
LSB
— —
— —
— —
0
C
MSB
LSB
— —
— —
— —
C
— —
MSB
LSB
— —
— —
C
MSB
LSB
— —
— —
— —
C
— —
MSB
LSB
— —
— —
C
MSB
LSB
— —
— —
V
C
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Advanced
N
Normal
—
@@aa
@(d, PC)
@aa
@–ERn/@ERn+
@(d, ERn)
I
↔ ↔ ↔
SHAL.W Rd
H
— —
↔ ↔ ↔ ↔ ↔ ↔ ↔ ↔ ↔ ↔ ↔ ↔ ↔ ↔ ↔ ↔ ↔ ↔ ↔ ↔ ↔ ↔ ↔ ↔
2
Condition Code
Operation
↔ ↔ ↔ ↔ ↔ ↔ ↔ ↔ ↔ ↔ ↔ ↔ ↔ ↔ ↔ ↔ ↔ ↔ ↔ ↔ ↔ ↔ ↔ ↔
B
No. of
States*1
↔ ↔ ↔ ↔ ↔ ↔ ↔ ↔ ↔ ↔ ↔ ↔ ↔ ↔ ↔ ↔ ↔ ↔ ↔ ↔ ↔ ↔ ↔ ↔
SHAL SHAL.B Rd
@ERn
Rn
#xx
Mnemonic
Operand Size
Addressing Mode and
Instruction Length (bytes)
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
Rev. 1.0, 03/01, page 233 of 280
5. Bit manipulation instructions
B
BSET #xx:3, @aa:8
B
BSET Rn, Rd
B
BSET Rn, @ERd
B
BSET Rn, @aa:8
B
B
BCLR #xx:3, @ERd
B
BCLR #xx:3, @aa:8
B
BCLR Rn, Rd
B
BCLR Rn, @ERd
B
BCLR Rn, @aa:8
B
BNOT BNOT #xx:3, Rd
B
BNOT #xx:3, @ERd
B
BNOT #xx:3, @aa:8
B
BNOT Rn, Rd
B
BNOT Rn, @ERd
B
BNOT Rn, @aa:8
B
BTST BTST #xx:3, Rd
B
BTST #xx:3, @ERd
B
BTST #xx:3, @aa:8
B
BTST Rn, Rd
B
BTST Rn, @ERd
B
BTST Rn, @aa:8
B
BLD #xx:3, Rd
B
2
4
4
2
4
4
2
4
4
2
4
4
2
4
4
2
4
4
2
4
4
2
4
4
2
Rev. 1.0, 03/01, page 234 of 280
H
N
Z
V
C
Advanced
I
Normal
—
@@aa
@(d, PC)
@aa
@–ERn/@ERn+
@(d, ERn)
@ERn
Rn
Condition Code
Operation
(#xx:3 of Rd8) ← 1
— — — — — —
2
(#xx:3 of @ERd) ← 1
— — — — — —
8
(#xx:3 of @aa:8) ← 1
— — — — — —
8
(Rn8 of Rd8) ← 1
— — — — — —
2
(Rn8 of @ERd) ← 1
— — — — — —
8
(Rn8 of @aa:8) ← 1
— — — — — —
8
(#xx:3 of Rd8) ← 0
— — — — — —
2
(#xx:3 of @ERd) ← 0
— — — — — —
8
(#xx:3 of @aa:8) ← 0
— — — — — —
8
(Rn8 of Rd8) ← 0
— — — — — —
2
(Rn8 of @ERd) ← 0
— — — — — —
8
(Rn8 of @aa:8) ← 0
— — — — — —
8
(#xx:3 of Rd8) ←
¬ (#xx:3 of Rd8)
— — — — — —
2
(#xx:3 of @ERd) ←
¬ (#xx:3 of @ERd)
— — — — — —
8
(#xx:3 of @aa:8) ←
¬ (#xx:3 of @aa:8)
— — — — — —
8
(Rn8 of Rd8) ←
¬ (Rn8 of Rd8)
— — — — — —
2
(Rn8 of @ERd) ←
¬ (Rn8 of @ERd)
— — — — — —
8
(Rn8 of @aa:8) ←
¬ (Rn8 of @aa:8)
— — — — — —
8
¬ (#xx:3 of Rd8) → Z
— — —
¬ (#xx:3 of @ERd) → Z
— — —
¬ (#xx:3 of @aa:8) → Z
— — —
¬ (Rn8 of @Rd8) → Z
— — —
¬ (Rn8 of @ERd) → Z
— — —
¬ (Rn8 of @aa:8) → Z
— — —
(#xx:3 of Rd8) → C
— — — — —
— —
2
— —
6
— —
6
— —
2
— —
6
— —
6
↔
BSET #xx:3, @ERd
BCLR BCLR #xx:3, Rd
BLD
B
No. of
States*1
↔ ↔ ↔ ↔ ↔ ↔
BSET BSET #xx:3, Rd
#xx
Mnemonic
Operand Size
Addressing Mode and
Instruction Length (bytes)
2
BLD #xx:3, @aa:8
B
BILD BILD #xx:3, Rd
B
BILD #xx:3, @ERd
B
BILD #xx:3, @aa:8
B
BST #xx:3, Rd
B
BST #xx:3, @ERd
B
BIST BST #xx:3, @aa:8
B
BST
BIST #xx:3, Rd
B
BIST #xx:3, @ERd
B
BIST #xx:3, @aa:8
B
BAND BAND #xx:3, Rd
B
BAND #xx:3, @ERd
B
BIAND BAND #xx:3, @aa:8
B
BOR
BIAND #xx:3, Rd
B
BIAND #xx:3, @ERd
B
BIAND #xx:3, @aa:8
B
BOR #xx:3, Rd
B
BOR #xx:3, @ERd
B
BOR #xx:3, @aa:8
B
BIOR BIOR #xx:3, Rd
B
BIOR #xx:3, @ERd
B
BIOR #xx:3, @aa:8
B
BXOR BXOR #xx:3, Rd
B
BXOR #xx:3, @ERd
B
BXOR #xx:3, @aa:8
B
BIXOR BIXOR #xx:3, Rd
B
BIXOR #xx:3, @ERd
B
BIXOR #xx:3, @aa:8
B
4
4
2
4
4
2
4
4
2
4
4
2
4
4
2
4
4
2
4
4
2
4
4
2
4
4
2
H
N
Z
V
C
(#xx:3 of @ERd) → C
— — — — —
6
(#xx:3 of @aa:8) → C
— — — — —
¬ (#xx:3 of Rd8) → C
— — — — —
¬ (#xx:3 of @ERd) → C
— — — — —
¬ (#xx:3 of @aa:8) → C
— — — — —
C → (#xx:3 of Rd8)
— — — — — —
2
C → (#xx:3 of @ERd24)
— — — — — —
8
C → (#xx:3 of @aa:8)
— — — — — —
8
¬ C → (#xx:3 of Rd8)
— — — — — —
2
¬ C → (#xx:3 of @ERd24)
— — — — — —
8
¬ C → (#xx:3 of @aa:8)
— — — — — —
8
C∧(#xx:3 of Rd8) → C
— — — — —
2
C∧(#xx:3 of @ERd24) → C
— — — — —
C∧(#xx:3 of @aa:8) → C
— — — — —
C∧ ¬ (#xx:3 of Rd8) → C
— — — — —
C∧ ¬ (#xx:3 of @ERd24) → C
— — — — —
C∧ ¬ (#xx:3 of @aa:8) → C
— — — — —
C⁄(#xx:3 of Rd8) → C
— — — — —
C⁄(#xx:3 of @ERd24) → C
— — — — —
C⁄(#xx:3 of @aa:8) → C
— — — — —
C⁄ ¬ (#xx:3 of Rd8) → C
— — — — —
C⁄ ¬ (#xx:3 of @ERd24) → C
— — — — —
C⁄ ¬ (#xx:3 of @aa:8) → C
— — — — —
C⊕(#xx:3 of Rd8) → C
— — — — —
C⊕(#xx:3 of @ERd24) → C
— — — — —
C⊕(#xx:3 of @aa:8) → C
— — — — —
C⊕ ¬ (#xx:3 of Rd8) → C
— — — — —
C⊕ ¬ (#xx:3 of @ERd24) → C — — — — —
4
4
Advanced
I
Normal
—
@@aa
@(d, PC)
@aa
@–ERn/@ERn+
@(d, ERn)
@ERn
Rn
Condition Code
Operation
↔ ↔ ↔ ↔ ↔
BLD #xx:3, @ERd
No. of
States*1
↔ ↔ ↔ ↔ ↔ ↔ ↔ ↔ ↔ ↔ ↔ ↔ ↔ ↔ ↔ ↔ ↔ ↔
BLD
B
#xx
Mnemonic
Operand Size
Addressing Mode and
Instruction Length (bytes)
C⊕ ¬ (#xx:3 of @aa:8) → C
— — — — —
6
2
6
6
6
6
2
6
6
2
6
6
2
6
6
2
6
6
2
6
6
Rev. 1.0, 03/01, page 235 of 280
6. Branching instructions
Bcc
Condition Code
—
2
BRA d:16 (BT d:16)
—
4
BRN d:8 (BF d:8)
—
2
BRN d:16 (BF d:16)
—
4
BHI d:8
—
2
BHI d:16
—
4
BLS d:8
—
2
BLS d:16
—
4
BCC d:8 (BHS d:8)
—
2
BCC d:16 (BHS d:16)
—
4
BCS d:8 (BLO d:8)
—
2
BCS d:16 (BLO d:16)
—
4
BNE d:8
—
2
BNE d:16
—
4
BEQ d:8
—
2
BEQ d:16
—
4
BVC d:8
—
2
BVC d:16
—
4
BVS d:8
—
2
BVS d:16
—
4
BPL d:8
—
2
BPL d:16
—
4
BMI d:8
—
2
BMI d:16
—
4
BGE d:8
—
2
BGE d:16
—
4
BLT d:8
—
2
BLT d:16
—
4
BGT d:8
—
2
BGT d:16
—
4
BLE d:8
—
2
BLE d:16
—
4
If condition Always
is true then
PC ← PC+d
Never
else next;
C⁄Z=0
C⁄Z=1
C=0
C=1
Z=0
Z=1
V=0
V=1
N=0
N=1
N⊕V = 0
N⊕V = 1
Z ⁄ (N⊕V) = 0
Z ⁄ (N⊕V) = 1
I
H
N
Z
V
C
Advanced
Branch
Condition
Normal
—
@@aa
@(d, PC)
BRA d:8 (BT d:8)
Rev. 1.0, 03/01, page 236 of 280
No. of
States*1
Operation
@aa
@–ERn/@ERn+
@(d, ERn)
@ERn
Rn
#xx
Mnemonic
Operand Size
Addressing Mode and
Instruction Length (bytes)
— — — — — —
4
— — — — — —
6
— — — — — —
4
— — — — — —
6
— — — — — —
4
— — — — — —
6
— — — — — —
4
— — — — — —
6
— — — — — —
4
— — — — — —
6
— — — — — —
4
— — — — — —
6
— — — — — —
4
— — — — — —
6
— — — — — —
4
— — — — — —
6
— — — — — —
4
— — — — — —
6
— — — — — —
4
— — — — — —
6
— — — — — —
4
— — — — — —
6
— — — — — —
4
— — — — — —
6
— — — — — —
4
— — — — — —
6
— — — — — —
4
— — — — — —
6
— — — — — —
4
— — — — — —
6
— — — — — —
4
— — — — — —
6
JMP
BSR
JSR
RTS
JMP @ERn
—
JMP @aa:24
—
JMP @@aa:8
—
BSR d:8
—
BSR d:16
—
JSR @ERn
—
JSR @aa:24
—
JSR @@aa:8
—
RTS
—
No. of
States*1
Condition Code
H
N
Z
V
C
Advanced
I
Normal
—
@@aa
@(d, PC)
Operation
@aa
@–ERn/@ERn+
@(d, ERn)
@ERn
Rn
#xx
Mnemonic
Operand Size
Addressing Mode and
Instruction Length (bytes)
PC ← ERn
— — — — — —
PC ← aa:24
— — — — — —
PC ← @aa:8
— — — — — —
8
10
2
PC → @–SP
PC ← PC+d:8
— — — — — —
6
8
4
PC → @–SP
PC ← PC+d:16
— — — — — —
8
10
PC → @–SP
PC ← ERn
— — — — — —
6
8
PC → @–SP
PC ← aa:24
— — — — — —
8
10
PC → @–SP
PC ← @aa:8
— — — — — —
8
12
2 PC ← @SP+
— — — — — —
8
10
2
4
2
2
4
2
4
6
Rev. 1.0, 03/01, page 237 of 280
7. System control instructions
No. of
States*1
Condition Code
Advanced
—
CCR ← @SP+
PC ← @SP+
—
Transition to powerdown state
@aa:24 → CCR
ERd32–2 → ERd32
CCR → @ERd
— — — — — —
8
6
CCR → @aa:16
— — — — — —
8
8
CCR → @aa:24
— — — — — —
10
↔ ↔ ↔
2
— — — — — —
2
STC CCR, @aa:16
W
STC CCR, @aa:24
W
ANDC ANDC #xx:8, CCR
B
2
CCR∧#xx:8 → CCR
B
2
CCR⁄#xx:8 → CCR
B
2
CCR⊕#xx:8 → CCR
4
Rev. 1.0, 03/01, page 238 of 280
↔
12
W
—
↔
— — — — — —
2 PC ← PC+2
↔ ↔ ↔
CCR → @(d:24, ERd)
STC CCR, @–ERd
NOP
↔
8
10
W
↔ ↔ ↔
— — — — — —
STC CCR, @(d:24, ERd)
NOP
↔
CCR → @(d:16, ERd)
W
4
↔ ↔ ↔
6
6
STC CCR, @(d:16, ERd)
XORC XORC #xx:8, CCR
2
— — — — — —
W
ORC #xx:8, CCR
— — — — — —
8
CCR → @ERd
B
STC CCR, @ERd
ORC
10
CCR → Rd8
2
STC CCR, Rd
STC
↔
@aa:16 → CCR
8
↔ ↔ ↔ ↔ ↔
6
W
↔
W
LDC @aa:24, CCR
8
↔ ↔
LDC @aa:16, CCR
@ERs → CCR
ERs32+2 → ERs32
4
↔ ↔ ↔ ↔ ↔
W
↔
LDC @ERs+, CCR
8
12
↔ ↔
@(d:24, ERs) → CCR
↔ ↔ ↔ ↔ ↔
10
↔
W
6
↔ ↔
LDC @(d:24, ERs), CCR
↔ ↔ ↔ ↔ ↔
@(d:16, ERs) → CCR
↔
6
2
↔ ↔
W
↔ ↔ ↔ ↔ ↔
LDC @(d:16, ERs), CCR
@ERs → CCR
4
2
↔ ↔ ↔ ↔ ↔
W
2
↔
LDC @ERs, CCR
Rs8 → CCR
2
C
↔
B
V
↔ ↔
B
LDC Rs, CCR
Z
↔ ↔
#xx:8 → CCR
2
LDC #xx:8, CCR
N
— — — — — —
↔ ↔ ↔
LDC
H
10
↔ ↔ ↔
SLEEP SLEEP
↔
RTE
RTE
@@aa
16
@(d, PC)
1 — — — — — 14
@aa
2 PC → @–SP
CCR → @–SP
<vector> → PC
@ERn
—
Rn
TRAPA TRAPA #x:2
#xx
I
Normal
Operation
—
@–ERn/@ERn+
@(d, ERn)
Mnemonic
Operand Size
Addressing Mode and
Instruction Length (bytes)
2
2
8. Block transfer instructions
EEPMOV
No. of
States*1
H
N
Z
V
C
Normal
—
@@aa
@(d, PC)
I
EEPMOV. B
—
4 if R4L ≠ 0 then
repeat @R5 → @R6
R5+1 → R5
R6+1 → R6
R4L–1 → R4L
until
R4L=0
else next
— — — — — — 8+
4n*2
EEPMOV. W
—
4 if R4 ≠ 0 then
repeat @R5 → @R6
R5+1 → R5
R6+1 → R6
R4–1 → R4
until
R4=0
else next
— — — — — — 8+
4n*2
Advanced
Condition Code
Operation
@aa
@–ERn/@ERn+
@(d, ERn)
@ERn
Rn
#xx
Mnemonic
Operand Size
Addressing Mode and
Instruction Length (bytes)
Notes: 1. The number of states in cases where the instruction code and its operands are located
in on-chip memory is shown here. For other cases see section A.3, Number of
Execution States.
2. n is the value set in register R4L or R4.
(1) Set to 1 when a carry or borrow occurs at bit 11; otherwise cleared to 0.
(2) Set to 1 when a carry or borrow occurs at bit 27; otherwise cleared to 0.
(3) Retains its previous value when the result is zero; otherwise cleared to 0.
(4) Set to 1 when the adjustment produces a carry; otherwise retains its previous value.
(5) The number of states required for execution of an instruction that transfers data in
synchronization with the E clock is variable.
(6) Set to 1 when the divisor is negative; otherwise cleared to 0.
(7) Set to 1 when the divisor is zero; otherwise cleared to 0.
(8) Set to 1 when the quotient is negative; otherwise cleared to 0.
Rev. 1.0, 03/01, page 239 of 280
AH
Rev. 1.0, 03/01, page 240 of 280
MULXU
5
STC
Table A-2
(2)
LDC
3
SUBX
OR
XOR
AND
MOV
C
D
E
F
BILD
BIST
BLD
BST
TRAPA
BEQ
B
BIAND
BAND
AND
RTE
BNE
CMP
BIXOR
BXOR
XOR
BSR
BCS
A
BIOR
BOR
OR
RTS
BCC
MOV.B
Table A-2
(2)
LDC
7
ADDX
BTST
DIVXU
BLS
AND.B
ANDC
6
9
BCLR
MULXU
BHI
XOR.B
XORC
5
ADD
BNOT
DIVXU
BRN
OR.B
ORC
4
MOV
BVS
9
B
JMP
BPL
BMI
MOV
Table A-2 Table A-2
(2)
(2)
Table A-2 Table A-2
(2)
(2)
A
Table A-2 Table A-2
EEPMOV
(2)
(2)
SUB
ADD
Table A-2
(2)
BVC
8
BSR
BGE
C
CMP
MOV
Instruction when most significant bit of BH is 1.
Instruction when most significant bit of BH is 0.
8
7
BSET
BRA
6
2
1
1st byte 2nd byte
AH AL BH BL
Table A-2 Table A-2 Table A-2 Table A-2
(2)
(2)
(2)
(2)
NOP
0
4
3
2
1
0
AL
Instruction code:
JSR
BGT
SUBX
ADDX
E
Table A-2
(3)
BLT
D
BLE
Table A-2
(2)
Table A-2
(2)
F
A.2
Operation Code Map
Table A.2 Operation Code Map (1)
SUBS
DAS
BRA
MOV
MOV
1B
1F
58
79
7A
CMP
CMP
ADD
ADD
2
BHI
1
SUB
SUB
BLS
OR
OR
XOR
XOR
BCS
AND
AND
BEQ
BVC
SUB
9
BVS
NEG
NOT
DEC
ROTR
ROTXR
DEC
ROTL
ADDS
SLEEP
8
ROTXL
EXTU
INC
7
SHAR
BNE
6
SHLR
EXTU
INC
5
SHAL
BCC
LDC/STC
4
SHLL
3
1st byte 2nd byte
AH AL BH BL
BRN
NOT
17
DEC
ROTXR
13
1A
ROTXL
12
DAA
0F
SHLR
ADDS
0B
11
INC
0A
SHLL
MOV
01
10
0
BH
AH AL
Instruction code:
BPL
A
MOV
BMI
NEG
CMP
SUB
ROTR
ROTL
SHAR
C
D
BGE
BLT
DEC
EXTS
INC
Table A-2 Table A-2
(3)
(3)
ADD
SHAL
B
BGT
E
F
BLE
DEC
EXTS
INC
Table A-2
(3)
Table A.2 Operation Code Map (2)
Rev. 1.0, 03/01, page 241 of 280
CL
Rev. 1.0, 03/01, page 242 of 280
DIVXS
3
BSET
7Faa7 * 2
BNOT
BNOT
BCLR
BCLR
Notes: 1. r is the register designation field.
2. aa is the absolute address field.
BSET
7Faa6 * 2
BTST
BCLR
7Eaa7 * 2
BNOT
BTST
BSET
7Dr07 * 1
7Eaa6 * 2
BSET
7Dr06 * 1
BTST
BCLR
MULXS
2
7Cr07 * 1
BNOT
DIVXS
1
BTST
MULXS
0
BIOR
BOR
BIOR
BOR
OR
4
BIXOR
BXOR
BIXOR
BXOR
XOR
5
BIAND
BAND
BIAND
BAND
AND
6
7
BIST
BILD
BST
BLD
BIST
BILD
BST
BLD
1st byte 2nd byte 3rd byte 4th byte
AH AL BH BL CH CL DH DL
7Cr06 * 1
01F06
01D05
01C05
01406
AH
ALBH
BLCH
Instruction code:
8
LDC
STC
9
A
LDC
STC
B
C
LDC
STC
D
E
LDC
STC
F
Instruction when most significant bit of DH is 1.
Instruction when most significant bit of DH is 0.
Table A.2 Operation Code Map (3)
A.3
Number of Execution States
The status of execution for each instruction of the H8/300H CPU and the method of calculating
the number of states required for instruction execution are shown below. Table A.4 shows the
number of cycles of each type occurring in each instruction, such as instruction fetch and data
read/write. Table A.3 shows the number of states required for each cycle. The total number of
states required for execution of an instruction can be calculated by the following expression:
Execution states = I × SI + J × SJ + K × SK + L × SL + M × SM + N × SN
Examples: When instruction is fetched from on-chip ROM, and an on-chip RAM is accessed.
BSET #0, @FF00
From table A.4:
I = L = 2, J = K = M = N= 0
From table A.3:
SI = 2, SL = 2
Number of states required for execution = 2 × 2 + 2 × 2 = 8
When instruction is fetched from on-chip ROM, branch address is read from on-chip ROM, and
on-chip RAM is used for stack area.
JSR @@ 30
From table A.4:
I = 2, J = K = 1,
L=M=N=0
From table A.3:
SI = SJ = SK = 2
Number of states required for execution = 2 × 2 + 1 × 2+ 1 × 2 = 8
Rev. 1.0, 03/01, page 243 of 280
Table A.3 Number of Cycles in Each Instruction
Access Location
Execution Status
(Instruction Cycle)
On-Chip Memory
On-Chip Peripheral Module
2
—
Instruction fetch
SI
Branch address read
SJ
Stack operation
SK
Byte data access
SL
2 or 3*
Word data access
SM
—
Internal operation
SN
1
Note: * Depends on which on-chip module is accessed. See section B.1, Register Addresses.
Rev. 1.0, 03/01, page 244 of 280
Table A.4 Number of Cycles in Each Instruction
Instruction Mnemonic
Instruction Branch
Stack
Byte Data
Fetch
Addr. Read Operation Access
I
J
K
L
ADD
ADD.B #xx:8, Rd
1
ADD.B Rs, Rd
1
ADD.W Rs, Rd
1
ADDS.W #1, Rd
1
ADDS.W #2, Rd
1
ADDX.B #xx:8, Rd
1
ADDX.B Rs, Rd
1
AND.B #xx:8, Rd
1
AND.B Rs, Rd
1
ANDC
ANDC #xx:8, CCR
1
BAND
BAND #xx:3, Rd
1
ADDS
ADDX
AND
Bcc
BCLR
BAND #xx:3, @Rd
2
1
BAND #xx:3, @aa:8
2
1
BRA d:8 (BT d:8)
2
BRN d:8 (BF d:8)
2
BHI
d:8
2
BLS
d:8
2
BCC d:8 (BHS d:8)
2
BCS d:8 (BLO d:8)
2
BNE
d:8
2
BEQ
d:8
2
BVC
d:8
2
BVS
d:8
2
BPL
d:8
2
BMI
d:8
2
BGE
d:8
2
BLT
d:8
2
BGT
d:8
2
BLE
d:8
BCLR #xx:3, Rd
Word Data Internal
Access
Operation
M
N
2
1
BCLR #xx:3, @Rd
2
2
BCLR #xx:3, @aa:8
2
2
BCLR Rn, Rd
1
Rev. 1.0, 03/01, page 245 of 280
Instruction Mnemonic
Instruction Branch
Stack
Byte Data
Fetch
Addr. Read Operation Access
I
J
K
L
BCLR
BCLR Rn, @Rd
2
2
BCLR Rn, @aa:8
2
2
BIAND
BILD
BIOR
BIST
BIXOR
BLD
BNOT
BOR
BSET
BIAND #xx:3, Rd
1
BIAND #xx:3, @Rd
2
1
BIAND #xx:3, @aa:8 2
1
BILD #xx:3, Rd
1
BILD #xx:3, @Rd
2
1
BILD #xx:3, @aa:8
2
1
BIOR #xx:3, Rd
1
BIOR #xx:3, @Rd
2
1
BIOR #xx:3, @aa:8
2
1
BIST #xx:3, Rd
1
BIST #xx:3, @Rd
2
2
BIST #xx:3, @aa:8
2
2
BIXOR #xx:3, Rd
1
BIXOR #xx:3, @Rd
2
1
BIXOR #xx:3, @aa:8 2
1
BLD #xx:3, Rd
1
BLD #xx:3, @Rd
2
1
BLD #xx:3, @aa:8
2
1
BNOT #xx:3, Rd
1
BNOT #xx:3, @Rd
2
2
BNOT #xx:3, @aa:8
2
2
BNOT Rn, Rd
1
BNOT Rn, @Rd
2
2
BNOT Rn, @aa:8
2
2
BOR #xx:3, Rd
1
BOR #xx:3, @Rd
2
1
BOR #xx:3, @aa:8
2
1
BSET #xx:3, Rd
1
BSET #xx:3, @Rd
2
2
BSET #xx:3, @aa:8
2
2
BSET Rn, Rd
1
BSET Rn, @Rd
2
Rev. 1.0, 03/01, page 246 of 280
2
Word Data Internal
Access
Operation
M
N
Instruction Mnemonic
Instruction Branch
Stack
Byte Data
Fetch
Addr. Read Operation Access
I
J
K
L
BSET
BSET Rn, @aa:8
2
BSR
BSR d:8
2
BST
BTST
BXOR
CMP
BST #xx:3, Rd
1
2
2
BST #xx:3, @aa:8
2
2
BTST #xx:3, Rd
1
BTST #xx:3, @Rd
2
1
BTST #xx:3, @aa:8
2
1
BTST Rn, Rd
1
BTST Rn, @Rd
2
1
BTST Rn, @aa:8
2
1
BXOR #xx:3, Rd
1
BXOR #xx:3, @Rd
2
1
BXOR #xx:3, @aa:8 2
1
1
CMP. B Rs, Rd
1
CMP.W Rs, Rd
1
DAA
DAA.B Rd
1
DAS
DAS.B Rd
1
DEC
DEC.B Rd
1
DIVXU
DIVXU.B Rs, Rd
1
EEPMOV
EEPMOV
2
INC
INC.B Rd
1
JMP
JMP @Rn
2
JMP @aa:16
2
JMP @@aa:8
2
JSR @Rn
2
JSR @aa:16
2
JSR @@aa:8
2
LDC #xx:8, CCR
1
LDC Rs, CCR
1
MOV.B #xx:8, Rd
1
MOV.B Rs, Rd
1
JSR
LDC
MOV
2
1
BST #xx:3, @Rd
CMP. B #xx:8, Rd
Word Data Internal
Access
Operation
M
N
12
2n+2*
1
2
1
2
1
1
1
2
1
Note: n: Initial value in R4L. The source and destination operands are accessed n + 1 times each.
Rev. 1.0, 03/01, page 247 of 280
Instruction Mnemonic
Instruction Branch
Stack
Byte Data
Fetch
Addr. Read Operation Access
I
J
K
L
MOV
1
1
MOV.B @(d:16, Rs), 2
Rd
MOV.B @Rs, Rd
1
MOV.B @Rs+, Rd
1
1
Word Data Internal
Access
Operation
M
N
2
MOV.B @aa:8, Rd
1
1
MOV.B @aa:16, Rd
2
1
MOV.B Rs, @Rd
1
1
MOV.B Rs, @(d:16,
Rd)
2
1
MOV.B Rs, @–Rd
1
1
MOV.B Rs, @aa:8
1
1
MOV.B Rs, @aa:16
2
1
MOV.W #xx:16, Rd
2
MOV.W Rs, Rd
1
MOV.W @Rs, Rd
2
1
1
MOV.W @(d:16, Rs), 2
Rd
1
MOV.W @Rs+, Rd
1
1
MOV.W @aa:16, Rd 2
1
MOV.W Rs, @Rd
1
1
MOV.W Rs, @(d:16d) 2
1
MOV.W Rs, @–Rd
1
1
MOV.W Rs, @aa:16 2
1
MULXU
MULXU.B Rs, Rd
1
NEG
NEG.B Rd
1
NOP
NOP
1
NOT
NOT.B Rd
1
OR
OR.B #xx:8, Rd
1
OR.B Rs, Rd
1
ORC
ORC #xx:8, CCR
1
ROTL
ROTL.B Rd
1
ROTR
ROTR.B Rd
1
ROTXL
ROTXL.B Rd
1
ROTXR
ROTXR.B Rd
1
Rev. 1.0, 03/01, page 248 of 280
2
2
12
Instruction Mnemonic
Instruction Branch
Stack
Byte Data
Fetch
Addr. Read Operation Access
I
J
K
L
Word Data Internal
Access
Operation
M
N
RTE
RTE
2
2
2
RTS
RTS
2
1
2
SHAL
SHAL.B Rd
1
SHAR
SHAR.B Rd
1
SHLL
SHLL.B Rd
1
SHLR
SHLR.B Rd
1
SLEEP
SLEEP
1
STC
STC CCR, Rd
1
SUB
SUB.B Rs, Rd
1
SUB.W Rs, Rd
1
SUBS
SUBS.W #1, Rd
1
SUBS.W #2, Rd
1
POP
POP Rd
1
1
2
PUSH
PUSH Rs
1
1
2
SUBX
SUBX.B #xx:8, Rd
1
XOR
XORC
SUBX.B Rs, Rd
1
XOR.B #xx:8, Rd
1
XOR.B Rs, Rd
1
XORC #xx:8, CCR
1
Note: n: specified value in R4L. The source and destination operands are accessed n + 1 times
respectively.
Rev. 1.0, 03/01, page 249 of 280
A.4
Combinations of Instructions and Addressing Modes
Table A.5 Combinations of Instructions and Addressing Modes
ADDX, SUBX
—
—
BWL BWL
WL BWL
B
B
@@aa:8
—
@aa:24
BWL BWL
—
—
@(d:16.PC)
B
—
@aa:16
@aa:8
@ERn+/@ERn
@(d:24.ERn)
@ERn
BWL BWL BWL BWL BWL BWL
—
—
—
—
—
—
@(d:8.PC)
Data
MOV
transfer
POP, PUSH
instructions
MOVFPE,
MOVTPE
Arithmetic
ADD, CMP
operations SUB
Rn
Instructions
#xx
Functions
@(d:16.ERn)
Addressing Mode
—
—
—
—
—
—
—
WL
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
ADDS, SUBS
INC, DEC
DAA, DAS
—
—
—
L
BWL
B
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
MULXU,
—
BW
—
—
—
—
—
—
—
—
—
—
—
NEG
EXTU, EXTS
AND, OR, XOR
—
—
—
BWL
WL
BWL
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
NOT
—
—
—
BWL
BWL
B
—
—
B
—
—
—
—
—
—
—
—
—
—
—
B
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
B
—
B
—
B
B
—
—
W
W
—
—
W
W
—
—
W
W
—
—
W
W
—
—
—
—
—
—
W
W
—
—
W
W
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
BW
MULXS,
DIVXU,
DIVXS
Logical
operations
Shift operations
Bit manipulations
BCC, BSR
Branching
instructions JMP, JSR
RTS
TRAPA
System
control
RTE
instructions
SLEEP
LDC
STC
ANDC, ORC,
XORC
NOP
Block data transfer instructions
Rev. 1.0, 03/01, page 250 of 280
—
Appendix B Internal I/O Registers
B.1
Register Addresses
Register Name
Abbreviation
Timer mode register W
TMRW
Bit No Address
Module
Name
Data
Bus
Access
Width State
8
Timer W
8
H'FF80
2
Timer control register W
TCRW
8
H'FF81
Timer W
8
2
Timer interrupt enable register W
TIERW
8
H'FF82
Timer W
8
2
Timer status register W
TSRW
8
H'FF83
Timer W
8
2
Timer I/O control register 0
TIOR0
8
H'FF84
Timer W
8
2
Timer I/O control register 1
TIOR1
8
H'FF85
Timer W
8
Timer counter
General register A
General register B
TCNT
GRA
GRB
16
16
16
H'FF86
H'FF88
H'FF8A
Timer W
Timer W
Timer W
2
16*
1
2
16*
1
2
16*
1
2
2
2
General register C
GRC
16
H'FF8C
Timer W
16*
1
General register D
GRD
16
H'FF8E
Timer W
16*
1
Flash memory control register 1
FLMCR1 8
H'FF90
ROM
8
2
Flash memory control register 2
FLMCR2 8
H'FF91
ROM
8
2
Erase block register 1
EBR1
8
H'FF93
ROM
8
2
Flash memory enable register
FENR
8
H'FF9B
ROM
8
2
Timer control register V0
TCRV0
8
H'FFA0
Timer V
8
3
Timer control/status register V
TCSRV
8
H'FFA1
Timer V
8
3
Timer constant register A
TCORA
8
H'FFA2
Timer V
8
3
Timer constant register B
TCORB
8
H'FFA3
Timer V
8
3
Timer counter V
TCNTV
8
H'FFA4
Timer V
8
3
Timer control register V1
TCRV1
8
H'FFA5
Timer V
8
3
Serial mode register
SMR
8
H'FFA8
SCI3
8
3
Bit rate register
BRR
8
H'FFA9
SCI3
8
3
Serial control register 3
SCR3
8
H'FFAA
SCI3
8
3
Rev. 1.0, 03/01, page 251 of 280
Bit No Address
Module
Name
Data
Bus
Access
Width State
TDR
8
H'FFAB
SCI3
8
3
Serial status register
SSR
8
H'FFAC
SCI3
8
3
Receive data register
RDR
8
H'FFAD
SCI3
8
3
A/D data register A
ADDRA
16
H'FFB0
A/D converter 8
3
A/D data register B
ADDRB
16
H'FFB2
A/D converter 8
3
A/D data register C
ADDRC
16
H'FFB4
A/D converter 8
3
A/D data register D
ADDRD
16
H'FFB6
A/D converter 8
3
A/D control/status register
ADCSR
8
H'FFB8
A/D converter 8
3
A/D control register
ADCR
8
H'FFB9
A/D converter 8
3
Register Name
Abbreviation
Transmit data register
Timer control/status register WD
Timer counter WD
TCSRWD 8
TCWD
8
H'FFC0
H'FFC1
WDT*
2
8
2
WDT*
2
8
2
2
Timer mode register WD
TMWD
8
H'FFC2
WDT*
8
2
Address break control register
ABRKCR 8
H'FFC8
Address break 8
2
Address break status register
ABRKSR 8
H'FFC9
Address break 8
2
Break address register H
BARH
H'FFCA
Address break 8
2
Break address register L
BARL
8
H'FFCB
Address break 8
2
Break data register H
BDRH
8
H'FFCC
Address break 8
2
Break data register L
BDRL
8
H'FFCD
Address break 8
2
Port pull-up control register 1
PUCR1
8
H'FFD0
I/O port
8
2
Port pull-up control register 5
PUCR5
8
H'FFD1
I/O port
8
2
Port data register 1
PDR1
8
H'FFD4
I/O port
8
2
Port data register 2
PDR2
8
H'FFD5
I/O port
8
2
Port data register 5
PDR5
8
H'FFD8
I/O port
8
2
Port data register 7
PDR7
8
H'FFDA
I/O port
8
2
Port data register 8
PDR8
8
H'FFDB
I/O port
8
2
Rev. 1.0, 03/01, page 252 of 280
8
Bit No Address
Module
Name
Data
Bus
Access
Width State
PDRB
8
H'FFDD
I/O port
8
2
Port mode register 1
PMR1
8
H'FFE0
I/O port
8
2
Port mode register 5
PMR5
8
H'FFE1
I/O port
8
2
Port control register 1
PCR1
8
H'FFE4
I/O port
8
2
Port control register 2
PCR2
8
H'FFE5
I/O port
8
2
Port control register 5
PCR5
8
H'FFE8
I/O port
8
2
Port control register 7
PCR7
8
H'FFEA
I/O port
8
2
Port control register 8
PCR8
8
H'FFEB
I/O port
8
2
System control register 1
SYSCR1 8
H'FFF0
Power-down
8
2
System control register 2
SYSCR2 8
H'FFF1
Power-down
8
2
Interrupt edge select register 1
IEGR1
8
H'FFF2
Interrupts
8
2
Interrupt edge select register 2
IEGR2
8
H'FFF3
Interrupts
8
2
Interrupt enable register 1
IENR1
8
H'FFF4
Interrupts
8
2
Interrupt flag register 1
IRR1
8
H'FFF6
Interrupts
8
2
Wake-up interrupt flag register
IWPR
8
H'FFF8
Interrupts
8
2
Module standby control register 1
MSTCR1 8
H'FFF9
Power-down
8
2
Module standby control register 2
MSTCR2 8
H'FFFA
Power-down
8
2
Register Name
Abbreviation
Port data register B
Notes: 1. Only word access can be used.
2. WDT: Watchdog timer
Rev. 1.0, 03/01, page 253 of 280
B.2
Register Bits
Register
Name
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Module Name
TMRW
CTS
—
BUFEB
BUFEA
—
PWMD
PWMC
PWMB
Timer W
TCRW
CCLR
CKS2
CKS1
CKS0
TOD
TOC
TOB
TOA
TIERW
OVIE
—
—
—
IMIED
IMIEC
IMIEB
IMIEA
TSRW
OVF
—
—
—
IMFD
IMFC
IMFB
IMFA
TIOR0
—
IOB2
IOB1
IOB0
—
IOA2
IOA1
IOA0
TIOR1
—
IOD2
IOD1
IOD0
—
IOC2
IOC1
IOC0
TCNT
TCNT15 TCNT14 TCNT13 TCNT12 TCNT11 TCNT10 TCNT9
TCNT7
TCNT6
TCNT5
TCNT4
TCNT3
TCNT2
TCNT1
TCNT0
GRA
GRA15
GRA14
GRA13
GRA12
GRA11
GRA10
GRA9
GRA8
GRA7
GRA6
GRA5
GRA4
GRA3
GRA2
GRA1
GRA0
GRB15
GRB14
GRB13
GRB12
GRB11
GRB10
GRB9
GRB8
GRB7
GRB6
GRB5
GRB4
GRB3
GRB2
GRB1
GRB0
GRC15
GRC14
GRC13
GRC12
GRC11
GRC10
GRC9
GRC8
GRC7
GRC6
GRC5
GRC4
GRC3
GRC2
GRC1
GRC0
GRD15
GRD14
GRD13
GRD12
GRD11
GRD10
GRD9
GRD8
GRB
GRC
GRD
TCNT8
GRD7
GRD6
GRD5
GRD4
GRD3
GRD2
GRD1
GRD0
FLMCR1
—
SWE
ESU
PSU
EV
PV
E
P
FLMCR2
FLER
—
—
—
—
—
—
—
EBR1
—
—
—
EB4
EB3
EB2
EB1
EB0
FENR
FLSHE
—
—
—
—
—
—
—
TCRV0
CMIEB
CMIEA
OVIE
CCLR1
CCLR0
CKS2
CKS1
CKS0
TCSRV
CMFB
CMFA
OVF
—
OS3
OS2
OS1
OS0
TCORA
TCORA7 TCORA6 TCORA5 TCORA4 TCORA3 TCORA2 TCORA1 TCORA0
TCORB
TCORB7 TCORB6 TCORB5 TCORB4 TCORB3 TCORB2 TCORB1 TCORB0
TCNTV
TCNTV7 TCNTV6 TCNTV5 TCNTV4 TCNTV3 TCNTV2 TCNTV1 TCNTV0
TCRV1
—
—
—
TVEG1
TVEG0
TRGE
—
Timer V
ICKS0
SMR
COM
CHR
PE
PM
STOP
MP
CKS1
CKS0
BRR
BRR7
BRR6
BRR5
BRR4
BRR3
BRR2
BRR1
BRR0
SCR3
TIE
RIE
TE
RE
MPIE
TEIE
CKE1
CKE0
TDR
TDR7
TDR6
TDR5
TDR4
TDR3
TDR2
TDR1
TDR0
Rev. 1.0, 03/01, page 254 of 280
ROM
SCI3
Register
Name
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Module Name
SSR
TDRE
RDRF
OER
FER
PER
TEND
MPBR
MPBT
SCI3
RDR
RDR7
RDR6
RDR5
RDR4
RDR3
RDR2
RDR1
RDR0
ADDRA
AD9
AD8
AD7
AD6
AD5
AD4
AD3
AD2
AD1
AD0
—
—
—
—
—
—
AD9
AD8
AD7
AD6
AD5
AD4
AD3
AD2
AD1
AD0
—
—
—
—
—
—
AD9
AD8
AD7
AD6
AD5
AD4
AD3
AD2
AD1
AD0
—
—
—
—
—
—
AD9
AD8
AD7
AD6
AD5
AD4
AD3
AD2
ADDRB
ADDRC
ADDRD
AD1
AD0
—
—
—
—
—
—
ADCSR
ADF
ADIE
ADST
SCAN
CKS
CH2
CH1
CH0
ADCR
TRGE
—
—
—
—
—
—
—
TCSRWD B6WI
TCWE
B4WI
TCSRWE B2WI
WDON
B0WI
WRST
TCWD
TCWD6
TCWD5
TCWD4
TCWD3
TCWD2
TCWD1
TCWD0
TCWD7
TMWD
—
—
—
—
CKS3
CKS2
CKS1
CKS0
ABRKCR
RTINTE
CSEL1
CSEL0
ACMP2
ACMP1
ACMP0
DCMP1
DCMP0
ABRKSR
ABIF
ABIE
—
—
—
—
—
—
BARH
BARH7
BARH6
BARH5
BARH4
BARH3
BARH2
BARH1
BARH0
BARL
BARL7
BARL6
BARL5
BARL4
BARL3
BARL2
BARL1
BARL0
BDRH
BDRH7
BDRH6
BDRH5
BDRH4
BDRH3
BDRH2
BDRH1
BDRH0
BDRL
BDRL7
BDRL6
BDRL5
BDRL4
BDRL3
BDRL2
BDRL1
BDRL0
PUCR1
PUCR17 PUCR16 PUCR15 PUCR14 —
A/D converter
WDT*
Address break
PUCR12 PUCR11 PUCR10 I/O port
PUCR5
—
—
PUCR55 PUCR54 PUCR53 PUCR52 PUCR51 PUCR50
PDR1
P17
P16
P15
P14
—
P12
P11
P10
PDR2
—
—
—
—
—
P22
P21
P20
PDR5
P57
P56
P55
P54
P53
P52
P51
P50
PDR7
—
P76
P75
P74
—
—
—
—
PDR8
—
—
—
P84
P83
P82
P81
P80
Rev. 1.0, 03/01, page 255 of 280
Register
Name
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Module Name
PDRB
—
—
—
—
PB3
PB2
PB1
PB0
I/O port
PMR1
IRQ3
—
—
IRQ0
—
—
TXD
—
PMR5
POF7
POF6
WKP5
WKP4
WKP3
WKP2
WKP1
WKP0
PCR1
PCR17
PCR16
PCR15
PCR14
—
PCR12
PCR11
PCR10
PCR2
—
—
—
—
—
PCR22
PCR21
PCR20
PCR5
PCR57
PCR56
PCR55
PCR54
PCR53
PCR52
PCR51
PCR50
PCR7
—
PCR76
PCR75
PCR74
—
—
—
—
PCR8
—
—
—
PCR84
PCR83
PCR82
PCR81
PCR80
SYSCR1
SSBY
STS2
STS1
STS0
—
—
—
—
SYSCR2
SMSEL
—
DTON
MA2
MA1
MA0
—
—
IEGR1
—
—
—
—
IEG3
—
—
IEG0
IEGR2
—
—
WPEG5
WPEG4
WPEG3
WPEG2
WPEG1
WPEG0
Power-down
Interrupts
IENR1
IENDT
—
IENWP
—
IEN3
—
—
IEN0
IRR1
IRRDT
—
—
—
IRRI3
—
—
IRRI0
IWPR
—
—
IWPF5
IWPF4
IWPF3
IWPF2
IWPF1
IWPF0
MSTCR1
—
—
MSTS3
MSTAD
MSTWD MSTTW
MSTTV
—
MSTCR2
—
—
—
—
—
—
MSTRWM Power-down
Note: * WDT: Watchdog timer
Rev. 1.0, 03/01, page 256 of 280
—
Power-down
B.3
Register
Name
Registers States in Each Operating Mode
Reset
Active
Sleep
Subsleep
Standby
Module
TMRW
Initialized
−
−
−
−
Timer W
TCRW
Initialized
−
−
−
−
TIERW
Initialized
−
−
−
−
TSRW
Initialized
−
−
−
−
TIOR0
Initialized
−
−
−
−
TIOR1
Initialized
−
−
−
−
TCNT
Initialized
−
−
−
−
GRA
Initialized
−
−
−
−
GRB
Initialized
−
−
−
−
GRC
Initialized
−
−
−
−
GRD
Initialized
−
−
−
−
FLMCR1
Initialized
−
−
Initialized
Initialized
FLMCR2
Initialized
−
−
Initialized
Initialized
EBR1
Initialized
−
−
Initialized
Initialized
FENR
Initialized
−
−
Initialized
Initialized
TCRV0
Initialized
−
−
Initialized
Initialized
TCSRV
Initialized
−
−
Initialized
Initialized
TCORA
Initialized
−
−
Initialized
Initialized
TCORB
Initialized
−
−
Initialized
Initialized
TCNTV
Initialized
−
−
Initialized
Initialized
TCRV1
Initialized
−
−
Initialized
Initialized
SMR
Initialized
−
−
Initialized
Initialized
BRR
Initialized
−
−
Initialized
Initialized
SCR3
Initialized
−
−
Initialized
Initialized
TDR
Initialized
−
−
Initialized
Initialized
SSR
Initialized
−
−
Initialized
Initialized
RDR
Initialized
−
−
Initialized
Initialized
ROM
Timer V
SCI3
Rev. 1.0, 03/01, page 257 of 280
Register
Name
Reset
Active
Sleep
Standby
Module
ADDRA
Initialized
−
−
Initialized
A/D converter
ADDRB
Initialized
−
−
Initialized
ADDRC
Initialized
−
−
Initialized
ADDRD
Initialized
−
−
Initialized
ADCSR
Initialized
−
−
Initialized
ADCR
Initialized
−
−
Initialized
TCSRWD Initialized
−
−
−
TCWD
Initialized
−
−
−
TMWD
Initialized
−
−
−
ABRKCR
Initialized
−
−
−
ABRKSR
Initialized
−
−
−
BARH
Initialized
−
−
−
BARL
Initialized
−
−
−
BDRH
Initialized
−
−
−
BDRL
Initialized
−
−
−
PUCR1
Initialized
−
−
−
PUCR5
Initialized
−
−
−
PDR1
Initialized
−
−
−
PDR2
Initialized
−
−
−
PDR5
Initialized
−
−
−
PDR7
Initialized
−
−
−
PDR8
Initialized
−
−
−
PDRB
Initialized
−
−
−
PMR1
Initialized
−
−
−
PMR5
Initialized
−
−
−
PCR1
Initialized
−
−
−
PCR2
Initialized
−
−
−
PCR5
Initialized
−
−
−
PCR7
Initialized
−
−
−
PCR8
Initialized
−
−
−
Rev. 1.0, 03/01, page 258 of 280
WDT*
Address Break
I/O port
Register
Name
Reset
Active
Sleep
Standby
Module
SYSCR1
Initialized
−
−
−
Power-down
SYSCR2
Initialized
−
−
−
Power-down
IEGR1
Initialized
−
−
−
Interrupts
IEGR2
Initialized
−
−
−
Interrupts
IENR1
Initialized
−
−
−
Interrupts
IRR1
Initialized
−
−
−
Interrupts
IWPR
Initialized
−
−
−
Interrupts
MSTCR1
Initialized
−
−
−
Power-down
MSTCR2
Initialized
−
−
−
Power-down
Note : − is not initialized
* WDT : Watchdog timer
Rev. 1.0, 03/01, page 259 of 280
Appendix C I/O Port Block Diagrams
C.1
I/O Port Block
RES goes low in a reset, and SBY goes low in a reset and in standby mode.
Internal data bus
PUCR
Pull-up MOS
PMR
PDR
PCR
TRGV
Legend
PUCR: Port pull-up control register
PMR: Port mode register
PDR: Port data register
PCR: Port control register
Figure C.1 Port 1 Block Diagram (P17)
Rev. 1.0, 03/01, page 260 of 280
Internal data bus
PUCR
Pull-up MOS
PMR
PDR
PCR
Legend
PUCR: Port pull-up control register
PMR: Port mode register
PDR: Port data register
PCR: Port control register
Figure C.2 Port 1 Block Diagram (P14)
Rev. 1.0, 03/01, page 261 of 280
Internal data bus
PUCR
Pull-up MOS
PDR
PCR
Legend
PUCR: Port pull-up control register
PDR: Port data register
PCR: Port control register
Figure C.3 Port 1 Block Diagram (P16, P15, P12, P10)
Rev. 1.0, 03/01, page 262 of 280
Internal data bus
PUCR
Pull-up MOS
PDR
PCR
Legend
PUCR: Port pull-up control register
PDR: Port data register
PCR: Port control register
Figure C.4 Port 1 Block Diagram (P11)
Rev. 1.0, 03/01, page 263 of 280
Internal data bus
PMR
PDR
PCR
SCI3
TxD
Legend
PMR: Port mode register
PDR: Port data register
PCR: Port control register
Figure C.5 Port 2 Block Diagram (P22)
Rev. 1.0, 03/01, page 264 of 280
Internal data bus
PDR
PCR
SCI3
RE
RxD
Legend
PDR: Port data register
PCR: Port control register
Figure C.6 Port 2 Block Diagram (P21)
Rev. 1.0, 03/01, page 265 of 280
SCI3
SCKIE
SCKOE
Internal data bus
PDR
PCR
SCKO
SCKI
Legend
PDR: Port data register
PCR: Port control register
Figure C.7 Port 2 Block Diagram (P20)
Rev. 1.0, 03/01, page 266 of 280
Internal data bus
PMR
PDR
PCR
Legend
PMR: Port mode register
PDR: Port data register
PCR: Port control register
Figure C.8 Port 5 Block Diagram (P57, P56)
Rev. 1.0, 03/01, page 267 of 280
Internal data bus
PUCR
Pull-up MOS
PMR
PDR
PCR
Legend
PUCR: Port pull-up control register
PMR: Port mode register
PDR: Port data register
PCR: Port control register
Figure C.9 Port 5 Block Diagram (P55)
Rev. 1.0, 03/01, page 268 of 280
Internal data bus
PUCR
Pull-up MOS
PMR
PDR
PCR
Legend
PUCR: Port pull-up control register
PMR: Port mode register
PDR: Port data register
PCR: Port control register
Figure C.10 Port 5 Block Diagram (P54 to P50)
Rev. 1.0, 03/01, page 269 of 280
Internal data bus
Timer V
OS3
OS2
OS1
OS0
PDR
PCR
TMOV
Legend
PDR: Port data register
PCR: Port control register
Figure C.11 Port 7 Block Diagram (P76)
Rev. 1.0, 03/01, page 270 of 280
Internal data bus
PDR
PCR
Timer V
TMCIV
Legend
PDR: Port data register
PCR: Port control register
Figure C.12 Port 7 Block Diagram (P75)
Rev. 1.0, 03/01, page 271 of 280
Internal data bus
PDR
PCR
Timer V
TMRIV
Legend
PDR: Port data register
PCR: Port control register
Figure C.13 Port 7 Block Diagram (P74)
Rev. 1.0, 03/01, page 272 of 280
Internal data bus
Timer W
Output
control
signals
A to D
PDR
PCR
FTIOA
FTIOB
FTIOC
FTIOD
Legend
PDR: Port data register
PCR: Port control register
Figure C.14 Port 8 Block Diagram (P84 to P81)
Rev. 1.0, 03/01, page 273 of 280
Internal data bus
PDR
PCR
Timer W
FTCI
Legend
PDR: Port data register
PCR: Port control register
Figure C.15 Port 8 Block Diagram (P80)
Rev. 1.0, 03/01, page 274 of 280
Internal data bus
A/D converter
CH3 to CH0
DEC
VIN
Figure C.16 Port B Block Diagram (PB3 to PB0)
C.2
Port States in Each Operating State
Port
Reset
Active
Sleep
Subsleep
Standby
P17 to P14,
P12 to P10
High impedance
Functioning
Retained
Retained
High impedance*
P22 to P20
High impedance
Functioning
Retained
Retained
High impedance
P57 to P50
High impedance
Functioning
Retained
Retained
High impedance*
P76 to P74
High impedance
Functioning
Retained
Retained
High impedance
P84 to P80
High impedance
Functioning
Retained
Retained
High impedance
PB3 to PB0
High impedance
High
impedance
High
impedance
Retained
High impedance
Note: * High level output when the pull-up MOS is in on state.
Rev. 1.0, 03/01, page 275 of 280
Appendix D Product Code Lineup
Package (Hitachi Package Code)
Product Type
LQFP-64
(FP-64E)
LQFP-48
(FP-48F)
H8/3672
Flash memory version
Standard product
HD64F3672FP
HD64F3672FX
H8/3670
Flash memory version
Standard product
HD64F3670FP
HD64F3670FX
Rev. 1.0, 03/01, page 276 of 280
Appendix E Package Dimensions
The package dimensions that are shows in the Hitachi Semiconductor Packages Data Book has
priority.
Unit: mm
12.0 ± 0.2
10
48
33
32
64
17
0.5
12.0 ± 0.2
49
0.10
*Dimension including the plating thickness
Base material dimension
*0.17 ± 0.05
0.15 ± 0.04
1.25
1.45
0.08 M
1.70 Max
16
0.10 ± 0.10
1
*0.22 ± 0.05
0.20 ± 0.04
1.0
0–8
0.5 ± 0.2
Hitachi Code
JEDEC
EIAJ
Mass (reference value)
FP-64E
–
Conforms
0.4 g
Figure E.1 FP-64E Package Dimensions
Rev. 1.0, 03/01, page 277 of 280
Unit: mm
12.0 ± 0.2
10
37
24
48
13
12
1.425
1.0
0.50 ± 0.1
M
1.45
0.13
0.10
*Dimension including the plating thickness
Base material dimension
*0.17 ± 0.05
0.15 ± 0.04
*0.32 ± 0.05
0.30 ± 0.04
1.65 Max
1
0.65
25
0.1 ± 0.05
12.0 ± 0.2
36
Hitachi Code
JEDEC
EIAJ
Mass (reference value)
Figure E.2 FP-48F Package Dimensions
Rev. 1.0, 03/01, page 278 of 280
0 –8
FP-48F
—
—
0.4 g
Index
A/D Converter ............................................................... 193
programming units .................................................73
A/D conversion time............................................. 200
Programming/Erasing in User Program Mode.......80
external trigger input ............................................ 201
Software Protection................................................86
sample-and-hold circuit ....................................... 200
General Registers............................................................10
Scan Mode........................................................... 199
I/O Ports...........................................................................89
Single Mode......................................................... 199
I/O Port Block Diagrams.......................................260
Absolute Maximum Ratings .......................................... 207
Instruction Set..................................................................16
Address Break................................................................. 55
Arithmetic Operations Instructions ...................18, 19
Addressing Modes .......................................................... 27
Bit Manipulation Instructions ............................21, 22
Absolute Address................................................... 28
Block Data Transfer Instructions............................25
Immediate .............................................................. 28
Branch Instructions ................................................23
Memory Indirect ..................................................... 29
Data Transfer Instructions......................................17
Program-Counter Relative..................................... 29
Logic Operations Instructions ................................20
Register Direct ....................................................... 27
Shift Instructions.....................................................20
Register Indirect..................................................... 27
System Control Instructions ...................................24
Register Indirect with Displacement ...................... 28
internal power supply step-down circuit ........................205
Register indirect with post-increment .................... 28
Interrupt
Register indirect with pre-decrement..................... 28
Internal Interrupts ...................................................49
Clock Pulse Generators .................................................. 61
Interrupt Response Time........................................51
Condition Field ................................................................ 26
IRQ3 to IRQ0 Interrupts .........................................48
Condition-Code Register (CCR) ..................................... 11
NMI interrupt...........................................................48
CPU................................................................................... 7
WKP5 to WKP0 Interrupts......................................48
Effective Address ............................................................ 29
large current ports .............................................................1
Effective Address Extension ........................................... 26
Memory Map......................................................................8
Electrical Characteristics............................................... 207
Module Standby Function................................................72
AC Characteristics ............................................... 214
On-Board Programming Modes ......................................77
DC Characteristics............................................... 209
Operation Field ................................................................26
Exception Handling ......................................................... 41
Package.............................................................................1
NMI ........................................................................ 48
Package Dimensions.....................................................277
Reset...................................................................... 48
Pin Arrangement................................................................3
Stack Status........................................................... 50
Power-down Modes.........................................................65
Trap Instruction...................................................... 41
Sleep Mode ............................................................71
flash memory................................................................... 73
Standby Mode ........................................................71
Boot Mode.............................................................. 78
Subsleep Mode ......................................................71
boot program ......................................................... 77
Prescaler S ......................................................................63
Erase/Erase-Verify................................................. 84
Product Code Lineup.....................................................276
erasing units .......................................................... 73
Program Counter (PC).....................................................11
Error Protection...................................................... 86
PWM Operation .............................................................138
Hardware Protection.............................................. 86
Register
Program/Program-Verify........................................ 81
ABRKCR ....................................... 56, 252, 255, 258
Rev. 1.0, 03/01, page 279 of 280
ABRKSR........................................ 57, 252, 255, 258
RDR .............................................156, 252, 255, 257
ADCR .......................................... 198, 252, 255, 258
RSR...................................................................... 156
ADCSR ........................................ 197, 252, 255, 258
SCR3............................................158, 251, 254, 257
ADDRA ........................................ 196, 252, 255, 258
SMR .............................................157, 251, 254, 257
ADDRB ........................................ 196, 252, 255, 258
SSR..............................................160, 252, 255, 257
ADDRC........................................ 196, 252, 255, 258
SYSCR1.........................................65, 253, 256, 259
ADDRD........................................ 196, 252, 255, 258
SYSCR2.........................................66, 253, 256, 259
BARH............................................. 57, 252, 255, 258
TCNT............................................133, 251, 254, 257
BARL ............................................. 57, 252, 255, 258
TCNTV .........................................111, 251, 254, 257
BDRH ............................................ 58, 252, 255, 258
TCORA.........................................111, 251, 254, 257
BDRL ............................................. 58, 252, 255, 258
TCORB.........................................111, 251, 254, 257
BRR ............................................. 162, 251, 254, 257
TCRV0 .........................................112, 251, 254, 257
EBR1 ............................................. 76, 251, 254, 257
TCRV1 .........................................115, 251, 254, 257
FENR............................................. 77, 251, 254, 257
TCRW ..........................................128, 251, 254, 257
FLMCR1 ........................................ 75, 251, 254, 257
TCSRV .........................................114, 251, 254, 257
FLMCR2 ........................................ 76, 251, 254, 257
TCSRWD .....................................150, 252, 255, 258
GRA............................................. 133, 251, 254, 257
TCWD ..........................................151, 252, 255, 258
GRB............................................. 133, 251, 254, 257
TDR..............................................156, 252, 254, 257
GRC............................................. 133, 251, 254, 257
TIERW..........................................129, 251, 254, 257
GRD............................................. 133, 251, 254, 257
TIOR0...........................................131, 251, 254, 257
IEGR1............................................ 43, 253, 256, 259
TIOR1...........................................132, 251, 254, 257
IEGR2............................................ 44, 253, 256, 259
TMRW ..........................................126, 251, 254, 257
IENR1 ............................................ 45, 253, 256, 259
TMWD ..........................................151, 252, 255, 258
IRR1 .............................................. 46, 253, 256, 259
TSR ...................................................................... 156
IWPR ............................................. 47, 253, 256, 259
TSRW...........................................129, 251, 254, 257
MSTCR1........................................ 67, 253, 256, 259
Register Field .................................................................. 26
MSTCR2........................................ 68, 253, 256, 259
Serial Communication Interface3(SCI3) ....................... 153
PCR1 ............................................. 91, 253, 256, 258
Asynchronous Mode ............................................ 167
PCR2 ............................................. 94, 253, 256, 258
bit rate .................................................................. 162
PCR5 ............................................. 98, 253, 256, 258
Break.................................................................... 191
PCR7 ........................................... 102, 253, 256, 258
Clocked Synchronous Mode................................ 176
PCR8 ........................................... 104, 253, 256, 258
framing error ........................................................ 172
PDR1 ............................................. 91, 252, 255, 258
Mark State............................................................ 191
PDR2 ............................................. 95, 252, 255, 258
Multiprocessor Communication Function ............ 183
PDR5 ............................................. 98, 252, 255, 258
overrun error ........................................................ 172
PDR7 ........................................... 102, 252, 255, 258
parity error............................................................ 172
PDR8 ........................................... 105, 252, 255, 258
Stack Pointer................................................................... 11
PDRB........................................... 108, 253, 256, 258
System Clock Generator................................................. 61
PMR1............................................. 90, 253, 256, 258
Timer V.......................................................................... 109
PMR5............................................. 97, 253, 256, 258
Timer W......................................................................... 123
PUCR1 .......................................... 92, 252, 255, 258
Vector Address................................................................ 42
PUCR5 .......................................... 99, 252, 255, 258
Watchdog Timer............................................................ 149
Rev. 1.0, 03/01, page 280 of 280
H8/3672 Series Hardware Manual
Publication Date: 1st Edition, March 2001
Published by:
Electronic Devices Sales & Marketing Group
Semiconductor & Integrated Circuits
Hitachi, Ltd.
Edited by:
Technical Documentation Group
Hitachi Kodaira Semiconductor Co., Ltd.
Copyright © Hitachi, Ltd., 2001. All rights reserved. Printed in Japan.