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RL78/G13 CHAPTER 13 SERIAL INTERFACE IICA

R01UH0146EJ0100 Rev.1.00 704

Sep 22, 2011

(13) Bus status detector

This circuit detects whether or not the bus is released by detecting start conditions and stop conditions.

However, as the bus status cannot be detected immediately following operation, the initial status is set by the

STCEN bit.

Remark STT0 bit: Bit 1 of IICA control register 00 (IICCTL00)

SPT0 bit: Bit 0 of IICA control register 00 (IICCTL00)

IICRSV bit: Bit 0 of IICA flag register 0 (IICF0)

IICBSY bit: Bit 6 of IICA flag register 0 (IICF0)

STCF bit: Bit 7 of IICA flag register 0 (IICF0)

STCEN bit: Bit 1 of IICA flag register 0 (IICF0)

Default Chapter7
- Table of Contents7
Chapter 1 Outline20
- Features20
- Ordering Information22
- Pin Configuration (Top View)25
- 20-Pin Products25
- 24-Pin Products26
- 25-Pin Products27
- 30-Pin Products28
- 32-Pin Products29
- 36-Pin Products30
- 40-Pin Products31
- 44-Pin Products32
- 48-Pin Products33
- 52-Pin Products35
- 64-Pin Products36
- 80-Pin Products38
- 100-Pin Products39
- 128-Pin Products41
- Pin Identification42
- Block Diagram43
- 20-Pin Products43
- 24-Pin Products44
- 25-Pin Products45
- 30-Pin Products46
- 32-Pin Products47
- 36-Pin Products48
- 40-Pin Products49
- 44-Pin Products50
- 48-Pin Products51
- 52-Pin Products52
- 64-Pin Products53
- 80-Pin Products54
- 100-Pin Products55
- 128-Pin Products56
- Outline of Functions57
Chapter 2 Pin Functions63
- Pin Function List63
- 20-Pin Products64
- 24-Pin Products65
- 25-Pin Products66
- 30-Pin Products67
- 32-Pin Products69
- 36-Pin Products71
- 40-Pin Products73
- 44-Pin Products75
- 48-Pin Products77
- 52-Pin Products79
- 64-Pin Products81
- 80-Pin Products83
- 100-Pin Products86
- 128-Pin Products89
- Pins for each Product (Pins Other than Port Pins)93
- Description of Pin Functions99
- P00 to P07 (Port 0)99
- P10 to P17 (Port 1)100
- P20 to P27 (Port 2)101
- P30 to P37 (Port 3)101
- P40 to P47 (Port 4)102
- P50 to P57 (Port 5)104
- P60 to P67 (Port 6)104
- P70 to P77 (Port 7)105
- P80 to P87 (Port 8)106
- P90 to P97 (Port 9)106
- P100 to P106 (Port 10)106
- P110 to P117 (Port 11)107
- P120 to P127 (Port 12)107
- P130, P137 (Port 13)108
- P140 to P147 (Port 14)108
- P150 to P156 (Port 15)110
- VDD , Ev Dd0 , Ev Dd1 , V Ss , Ev Ss0 , Ev Ss1110
- Reset110
- Regc110
- Pin I/O Circuits and Recommended Connection of Unused Pins111
Chapter 3 Cpu Architecture117
- Memory Space117
- Internal Program Memory Space133
- Mirror Area136
- Internal Data Memory Space138
- Special Function Register (SFR) Area139
- Extended Special Function Register (2Nd SFR: 2Nd Special Function Register) Area139
- Data Memory Addressing140
- Processor Registers150
- Control Registers150
- General-Purpose Registers152
- ES and CS Registers154
- Special Function Registers (Sfrs)155
- Extended Special Function Registers (2Nd Sfrs: 2Nd Special Function Registers)161
- Instruction Address Addressing170
- Relative Addressing170
- Immediate Addressing170
- Table Indirect Addressing171
- Register Direct Addressing172
- Addressing for Processing Data Addresses173
- Implied Addressing173
- Register Addressing173
- Direct Addressing174
- Short Direct Addressing175
- SFR Addressing176
- Register Indirect Addressing177
- Based Addressing178
- Based Indexed Addressing181
- Stack Addressing182
Chapter 4 Port Functions183
- Port Functions183
- Port Configuration184
- Port 0186
- Port 1194
- Port 2204
- Port 3206
- Port 4211
- Port 5220
- Port 6227
- Port 7230
- Port 8237
- Port 9241
- Port 10246
- Port 11250
- Port 12250
- Port 13258
- Port 14260
- Port 15268
- Registers Controlling Port Function270
- Port Function Operations289
- Writing to I/O Port289
- Reading from I/O Port289
- Operations on I/O Port289
- Connecting to External Device with Different Potential (1.8 V, 2.5 V, 3 V)290
- Settings of Port Mode Register, and Output Latch When Using Alternate Function292
- Cautions When Using Port Function298
- Cautions on 1-Bit Manipulation Instruction for Port Register N (Pn)298
- Cautions on the Pin Settings on the Products Other than 128-Pin299
Chapter 5 Clock Generator301
- Functions of Clock Generator301
- Configuration of Clock Generator303
- Registers Controlling Clock Generator305
- System Clock Oscillator321
- X1 Oscillator321
- XT1 Oscillator321
- High-Speed On-Chip Oscillator325
- Low-Speed On-Chip Oscillator325
- Clock Generator Operation326
- Controlling Clock328
- Example of Setting High-Speed On-Chip Oscillator328
- Example of Setting X1 Oscillation Clock329
- Example of Setting XT1 Oscillation Clock330
- CPU Clock Status Transition Diagram331
- Condition before Changing CPU Clock and Processing after Changing CPU Clock337
- Time Required for Switchover of CPU Clock and Main System Clock339
- Conditions before Clock Oscillation Is Stopped340
Chapter 6 Timer Array Unit341
- Functions of Timer Array Unit343
- Independent Channel Operation Function343
- Simultaneous Channel Operation Function344
- 8-Bit Timer Operation Function (Channels 1 and 3 Only)345
- LIN-Bus Supporting Function (Channel 7 of Unit 0 Only)346
- Configuration of Timer Array Unit347
- Registers Controlling Timer Array Unit353
- Basic Rules of Timer Array Unit378
- Basic Rules of Simultaneous Channel Operation Function378
- Basic Rules of 8-Bit Timer Operation Function (Channels 1 and 3 Only)380
- Operation Timing of Counter381
- Count Clock (Ftclk)381
- Start Timing of Counter383
- Channel Output (Tomn Pin) Control389
- Tomn Pin Output Circuit Configuration389
- Tomn Pin Output Setting390
- Cautions on Channel Output Operation391
- Collective Manipulation of Tomn Bit397
- Timer Interrupt and Tomn Pin Output at Operation Start398
- Independent Channel Operation Function of Timer Array Unit399
- Operation as Interval Timer/Square Wave Output399
- Operation as External Event Counter405
- Operation as Frequency Divider (Channel 0 of Unit 0 Only)410
- Operation as Input Pulse Interval Measurement414
- Operation as Input Signal High-/Low-Level Width Measurement418
- Operation as Delay Counter422
- Simultaneous Channel Operation Function of Timer Array Unit427
- Operation as One-Shot Pulse Output Function427
- Operation as PWM Function434
- Operation as Multiple PWM Output Function441
- Cautions When Using Timer Array Unit449
- Cautions When Using Timer Output449
Chapter 7 Real-Time Clock450
- Functions of Real-Time Clock450
- Configuration of Real-Time Clock450
- Registers Controlling Real-Time Clock452
- Real-Time Clock Operation467
- Starting Operation of Real-Time Clock467
- Shifting to STOP Mode after Starting Operation468
- Reading/Writing Real-Time Clock469
- Setting Alarm of Real-Time Clock471
- Hz Output of Real-Time Clock472
- Example of Watch Error Correction of Real-Time Clock473
Chapter 8 Interval Timer476
- Functions of Interval Timer476
- Configuration of Interval Timer476
- Registers Controlling Interval Timer477
- Interval Timer Operation480
Chapter 9 Clock Output/Buzzer Output Controller481
- Functions of Clock Output/Buzzer Output Controller481
- Configuration of Clock Output/Buzzer Output Controller483
- Registers Controlling Clock Output/Buzzer Output Controller483
- Operations of Clock Output/Buzzer Output Controller486
- Operation as Output Pin486
Chapter 10 Watchdog Timer487
- Functions of Watchdog Timer487
- Configuration of Watchdog Timer488
- Register Controlling Watchdog Timer489
- Operation of Watchdog Timer490
- Controlling Operation of Watchdog Timer490
- Setting Overflow Time of Watchdog Timer491
- Setting Window Open Period of Watchdog Timer492
- Setting Watchdog Timer Interval Interrupt493
Chapter 11 A/D Converter494
- Function of A/D Converter494
- Configuration of A/D Converter496
- Registers Used in A/D Converter498
- A/D Converter Conversion Operations523
- Input Voltage and Conversion Results525
- A/D Converter Operation Modes526
- Software Trigger Mode (Select Mode, Sequential Conversion Mode)526
- Software Trigger Mode (Select Mode, One-Shot Conversion Mode)527
- Software Trigger Mode (Scan Mode, Sequential Conversion Mode)528
- Software Trigger Mode (Scan Mode, One-Shot Conversion Mode)529
- Hardware Trigger No-Wait Mode (Select Mode, Sequential Conversion Mode)530
- Hardware Trigger No-Wait Mode (Select Mode, One-Shot Conversion Mode)531
- Hardware Trigger No-Wait Mode (Scan Mode, Sequential Conversion Mode)532
- Hardware Trigger No-Wait Mode (Scan Mode, One-Shot Conversion Mode)533
- Hardware Trigger Wait Mode (Select Mode, Sequential Conversion Mode)534
- Hardware Trigger Wait Mode (Select Mode, One-Shot Conversion Mode)535
- Hardware Trigger Wait Mode (Scan Mode, Sequential Conversion Mode)536
- Hardware Trigger Wait Mode (Scan Mode, One-Shot Conversion Mode)537
- A/D Converter Setup Flowchart538
- Setting up Software Trigger Mode539
- Setting up Hardware Trigger No-Wait Mode540
- Setting up Hardware Trigger Wait Mode541
- Setup When Using Temperature Sensor542
- Mode)542
- Setting up Test Mode543
- SNOOZE Mode Function544
- How to Read A/D Converter Characteristics Table547
- Cautions for A/D Converter549
Chapter 12 Serial Array Unit553
- Functions of Serial Array Unit555
- 3-Wire Serial I/O (CSI00, CSI01, CSI10, CSI11, CSI20, CSI21, CSI30, CSI31)555
- UART (UART0 to UART3)556
- Simplified I 2 C (IIC00, IIC01, IIC10, IIC11, IIC20, IIC21, IIC30, IIC31)557
- Configuration of Serial Array Unit558
- Registers Controlling Serial Array Unit564
- Operation Stop Mode590
- Stopping the Operation by Units591
- Stopping the Operation by Channels592
- Operation of 3-Wire Serial I/O (CSI00, CSI01, CSI10, CSI11, CSI20, CSI21, CSI30, CSI31) Communication593
- Master Transmission596
- Master Reception606
- Master Transmission/Reception615
- Slave Transmission624
- Slave Reception633
- Slave Transmission/Reception640
- SNOOZE Mode Function650
- Calculating Transfer Clock Frequency654
- Procedure for Processing Errors that Occurred During 3-Wire Serial I/O656
- CSI20, CSI21, CSI30, CSI31) Communication656
- Operation of UART (UART0 to UART3) Communication657
- UART Transmission660
- UART Reception670
- SNOOZE Mode Function677
- Calculating Baud Rate682
- Procedure for Processing Errors that Occurred During UART (UART0 to UART3) Communication667686
- LIN Communication Operation687
- LIN Transmission687
- LIN Reception690
- Operation of Simplified I C (IIC00, IIC01, IIC10, IIC11, IIC20, IIC21, IIC30, IIC31) Communication696
- Address Field Transmission699
- Data Transmission705
- Data Reception709
- Stop Condition Generation714
- Calculating Transfer Rate715
- Procedure for Processing Errors that Occurred During Simplified I C717
- IIC20, IIC21, IIC30, IIC31) Communication717
Chapter 13 Serial Interface Iica718
- Functions of Serial Interface IICA718
- Configuration of Serial Interface IICA721
- Registers Controlling Serial Interface IICA724
- I C Bus Mode Functions738
- Pin Configuration738
- Setting Transfer Clock by Using IICWL0 and IICWH0 Registers739
- I C Bus Definitions and Control Methods741
- Start Conditions741
- Addresses742
- Transfer Direction Specification742
- Acknowledge (ACK)743
- Stop Condition744
- Wait745
- Canceling Wait747
- Interrupt Request (INTIICA0) Generation Timing and Wait Control748
- Address Match Detection Method749
- Error Detection749
- Extension Code749
- Arbitration750
- Wakeup Function752
- Communication Reservation755
- Cautions759
- Communication Operations760
- Timing of I 2 C Interrupt Request (INTIICA0) Occurrence767
- Timing Charts788
Chapter 14 Multiplier and Divider/Multiply-Accumulator803
- Functions of Multiplier and Divider/Multiply-Accumulator803
- Configuration of Multiplier and Divider/Multiply-Accumulator803
- Register Controlling Multiplier and Divider/Multiply-Accumulator809
- Operations of Multiplier and Divider/Multiply-Accumulator811
- Multiplication (Unsigned) Operation811
- Multiplication (Signed) Operation812
- Multiply-Accumulation (Unsigned) Operation813
- Multiply-Accumulation (Signed) Operation815
- Division Operation817
Chapter 15 Dma Controller819
- Functions of DMA Controller819
- Configuration of DMA Controller820
- Registers Controlling DMA Controller823
- Operation of DMA Controller828
- Operation Procedure828
- Transfer Mode829
- Termination of DMA Transfer829
- Example of Setting of DMA Controller830
- CSI Consecutive Transmission830
- Consecutive Capturing of A/D Conversion Results832
- UART Consecutive Reception + ACK Transmission834
- Holding DMA Transfer Pending by Dwaitn Bit836
- Forced Termination by Software837
- Cautions on Using DMA Controller839
Chapter 16 Interrupt Functions841
- Interrupt Function Types841
- Interrupt Sources and Configuration841
- Registers Controlling Interrupt Functions848
- Interrupt Servicing Operations861
- Maskable Interrupt Request Acknowledgment861
- Software Interrupt Request Acknowledgment864
- Multiple Interrupt Servicing864
- Interrupt Request Hold868
Chapter 17 Key Interrupt Function869
- Functions of Key Interrupt869
- Configuration of Key Interrupt869
- Register Controlling Key Interrupt871
Chapter 18 Standby Function872
- Standby Function and Configuration872
- Standby Function872
- Registers Controlling Standby Function873
- Standby Function Operation876
- HALT Mode876
- STOP Mode881
- SNOOZE Mode886
Chapter 19 Reset Function888
- Register for Confirming Reset Source898
Chapter 20 Power-On-Reset Circuit900
- Functions of Power-On-Reset Circuit900
- Configuration of Power-On-Reset Circuit901
- Operation of Power-On-Reset Circuit901
- Cautions for Power-On-Reset Circuit904
Chapter 21 Voltage Detector906
- Functions of Voltage Detector906
- Configuration of Voltage Detector907
- Registers Controlling Voltage Detector907
- Operation of Voltage Detector912
- When Used as Reset Mode912
- When Used as Interrupt Mode914
- When Used as Interrupt and Reset Mode916
- Cautions for Voltage Detector919
Chapter 22 Safety Functions921
- Overview of Safety Functions921
- Registers Used by Safety Functions922
- Operation of Safety Functions922
- Flash Memory CRC Operation Function (High-Speed CRC)922
- CRC Operation Function (General-Purpose CRC)926
- RAM Parity Error Detection Function928
- RAM Guard Function929
- SFR Guard Function930
- Invalid Memory Access Detection Function931
- Frequency Detection Function933
- A/D Test Function935
Chapter 23 Regulator939
- Regulator Overview939
Chapter 24 Option Byte940
- Functions of Option Bytes940
- User Option Byte (000C0H to 000C2H/010C0H to 010C2H)940
- On-Chip Debug Option Byte (000C3H/ 010C3H)941
- Format of User Option Byte942
- Format of On-Chip Debug Option Byte946
- Setting of Option Byte947
Chapter 25 Flash Memory948
- Writing to Flash Memory by Using Flash Memory Programmer949
- Programming Environment951
- Communication Mode951
- Writing to Flash Memory by Using External Device (that Incorporates UART)952
- Programming Environment952
- Communication Mode953
- Connection of Pins on Board954
- P40/TOOL0 Pin954
- RESET Pin954
- Port Pins955
- REGC Pin955
- X1 and X2 Pins955
- Power Supply955
- Data Flash956
- Data Flash Overview956
- Register Controlling Data Flash Memory957
- Procedure for Accessing Data Flash Memory958
- Programming Method959
- Controlling Flash Memory959
- Flash Memory Programming Mode960
- Selecting Communication Mode961
- Communication Commands962
- Description of Signature Data963
- Security Settings964
- Flash Memory Programming by Self-Programming966
- Boot Swap Function968
- Flash Shield Window Function970
Chapter 26 On-Chip Debug Function971
- Connecting E1 On-Chip Debugging Emulator to RL78/G13971
- On-Chip Debug Security ID972
- Securing of User Resources972
Chapter 27 Bcd Correction Circuit974
- BCD Correction Circuit Function974
- Registers Used by BCD Correction Circuit974
- BCD Correction Circuit Operation975
Chapter 28 Instruction Set977
- Conventions Used in Operation List978
- Operand Identifiers and Specification Methods978
- Description of Operation Column979
- Description of Flag Operation Column980
- PREFIX Instruction980
- Operation List981
Chapter 29 Electrical Specifications998
- Pins Mounted According to Product998
- Port Functions998
- Non-Port Functions998
- Absolute Maximum Ratings999
- Oscillator Characteristics1001
- Main System Clock Oscillator Characteristics1001
- On-Chip Oscillator Characteristics1002
- Subsystem Clock Oscillator Characteristics1003
- Recommended Oscillator Constants1004
- DC Characteristics1007
- Pin Characteristics1007
- Supply Current Characteristics1012
- AC Characteristics1025
- Basic Operation1025
- Peripheral Functions Characteristics1027
- Serial Array Unit1027
- Serial Interface IICA1050
- On-Chip Debug (UART)1051
- Analog Characteristics1051
- A/D Converter Characteristics1051
- Temperature Sensor Characteristics1055
- POR Circuit Characteristics1055
- LVD Circuit Characteristics1056
- Data Memory STOP Mode Low Supply Voltage Data Retention Characteristics1059
- Flash Memory Programming Characteristics1059
- Timing Specs for Switching Modes1060
Chapter 30 Package Drawings1061
- 20-Pin Products1061
- 24-Pin Products1062
- 25-Pin Products1063
- 30-Pin Products1064
- 32-Pin Products1065
- 36-Pin Products1066
- 40-Pin Products1067
- 44-Pin Products1068
- 48-Pin Products1069
- 52-Pin Products1071
- 64-Pin Products1072
- 80-Pin Products1076
- 100-Pin Products1078
- 128-Pin Products1080
Appendix A Revision History1081
- Major Revisions in this Edition1081
- Revision History of Preceding Editions1088

Brand	Renesas
Model	RL78/G13
Category	Computer Hardware
Language	English

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