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RL78/G1H CHAPTER 15 SERIAL INTERFACE IICA

R01UH0575EJ0120 Rev. 1.20 Page 446 of 920

Dec 22, 2016

15.3.8 Register to control port function of serial I/O pin

When serial interface IICA is used, set the registers (port mode register 6 (PM6) and port register 6 (P6)) that

controls the port functions for alternately used with SCLAn pin and SDAAn pin.

For details, see 5.3.1 Port mode registers (PMxx), 5.3.2 Port registers (Pxx), and 5.3.6 Port mode control

registers (PMCxx).

Set the IICEn bit (bit 7 of IICA control register n0 (IICCTLn0)) to 1 before setting the output mode because the

SCLAn and SDAAn pins output a low level (fixed) when the IICEn bit is 0.

Default Chapter7
- Table of Contents7
1 Outline19
- Features19
- Ordering Information22
- Pin Configuration (Top View)24
- Pin Identification25
- Block Diagram26
- Outline of Functions27
2 Connection between Mcu and Rf Transceiver29
- Connection Pins of MCU and RF Transceiver29
- Communication Interface between MCU and RF Transceiver30
- Initial Settings of Unused Internal Pins of MCU31
- Base Operation Clock of RF Unit32
- Power Configuration33
- Peripheral Circuits'connection Diagram34
3 Pin Functions37
- Port Functions37
- Functions Other than Port Pins40
- Connection of Unused Pins41
- Pin Block Diagrams42
4 Cpu Architecture54
- Memory Space54
- Processor Registers66
5 Port Functions85
- Port Configuration86
- Registers Controlling Port Function91
- Port Function Operations103
- Register Settings When Using Alternate Function105
- Cautions When Using Port Function113
  - Cautions on 1-Bit Manipulation Instruction for Port Register N (Pn)113
  - Notes on Specifying the Pin Settings114
6 Clock Generator115
- Functions of Clock Generator115
- Configuration of Clock Generator117
- Registers Controlling Clock Generator119
- System Clock Oscillator135
- Clock Generator Operation140
- Controlling Clock142
7 Timer Array Unit157
- Functions of Timer Array Unit158
- Configuration of Timer Array Unit160
  - Timer Count Register Mn (Tcrmn)164
  - Timer Data Register Mn (Tdrmn)166
- Registers Controlling Timer Array Unit167
- Basic Rules of Timer Array Unit190
  - Basic Rules of Simultaneous Channel Operation Function190
  - Basic Rules of 8-Bit Timer Operation Function (Channels 1 and 3 Only)192
- Operation of Counter193
- Channel Output (Tomn Pin) Control201
- Timer Input (Timn) Control210
- Independent Channel Operation Function of Timer Array Unit212
- Simultaneous Channel Operation Function of Timer Array Unit233
  - Operation as PWM Function233
- Cautions When Using Timer Array Unit240
  - Cautions When Using Timer Output240
8 Timer Rj241
- Functions of Timer RJ241
- Configuration of Timer RJ242
- Registers Controlling Timer RJ243
- Timer RJ Operation249
- Cautions for Timer RJ252
9 Real-Time Clock254
- Functions of Real-Time Clock254
- Configuration of Real-Time Clock254
- Registers Controlling Real-Time Clock256
- Real-Time Clock Operation271
10 Bit Interval Timer279
- Functions of 12-Bit Interval Timer279
- Configuration of 12-Bit Interval Timer279
- Registers Controlling 12-Bit Interval Timer280
- 12-Bit Interval Timer Operation283
  - 12-Bit Interval Timer Operation Timing283
  - Start of Count Operation and Re-Enter to HALT/STOP Mode after Returned from HALT/STOP Mode284
11 Clock Output/Buzzer Output Controller285
- Functions of Clock Output/Buzzer Output Controller285
- Configuration of Clock Output/Buzzer Output Controller287
- Registers Controlling Clock Output/Buzzer Output Controller287
  - Clock Output Select Registers N (Cksn)287
  - Registers Controlling Port Functions of Pins to be Used for Clock or Buzzer Output289
- Operations of Clock Output/Buzzer Output Controller290
  - Operation as Output Pin290
- Cautions of Clock Output/Buzzer Output Controller290
12 Watchdog Timer291
- Functions of Watchdog Timer291
- Configuration of Watchdog Timer292
- Register Controlling Watchdog Timer293
  - Watchdog Timer Enable Register (WDTE)293
- Operation of Watchdog Timer294
13 A/D Converter298
- Function of A/D Converter298
- Configuration of A/D Converter301
- Registers Controlling A/D Converter303
- A/D Converter Conversion Operations321
- Input Voltage and Conversion Results323
- A/D Converter Operation Modes324
- A/D Converter Setup Flowchart330
- SNOOZE Mode Function334
- Cautions for A/D Converter337
14 Serial Array Unit341
- Functions of Serial Array Unit342
  - 3-Wire Serial I/O (Csip)342
  - UART (Uartq)343
- Configuration of Serial Array Unit344
  - Shift Register347
  - Lower 8 Bits of the Serial Data Register Mn (Sdrmn)347
- Registers Controlling Serial Array Unit349
- Operation Stop Mode370
  - Stopping the Operation by Units370
  - Stopping the Operation by Channels371
- Operation of 3-Wire Serial I/O (Csip) Communication372
- Operation of UART (Uartq) Communication423
15 Serial Interface Iica445
- Functions of Serial Interface IICA445
- Configuration of Serial Interface IICA448
- Registers Controlling Serial Interface IICA451
- I 2 C Bus Mode Functions465
  - Pin Configuration465
  - Setting Transfer Clock by Using Iicwln and Iicwhn Registers466
- I 2 C Bus Definitions and Control Methods468
- Timing Charts517
16 Data Transfer Controller (Dtc)532
- Functions of DTC532
- Configuration of DTC534
- Registers Controlling DTC535
- DTC Operation547
- Cautions for DTC553
17 Event Link Controller (Elc)558
- Functions of ELC558
- Configuration of ELC558
- Registers Controlling ELC559
  - ELC Operation561
18 Rf Transceiver562
- RF Transceiver Overview563
- Pin Functions564
- Configuration of RF Transceiver566
- Baseband Function569
- Serial Interface Only for Internal Communication669
- RF Mode673
- Example of Procedure for Setting681
- Notice for Using Baseband Function722
  - Notice about Transmission722
  - Cautions on First and Second Address Filter Match Monitor Bits722
19 Interrupt Functions723
- Interrupt Function Types723
- Interrupt Sources and Configuration723
- Registers Controlling Interrupt Functions727
- Interrupt Servicing Operations739
20 Standby Function749
- Registers Controlling Standby Function750
21 Reset Function764
- Timing of Reset Operation766
- Register for Confirming Reset Source770
22 Power-On-Reset Circuit773
- Configuration of Power-On-Reset Circuit774
23 Voltage Detector778
- Configuration of Voltage Detector779
  - Voltage Detection Register (LVIM)780
  - Voltage Detection Level Register (LVIS)781
- Operation of Voltage Detector782
24 Safety Functions793
- Registers Used by Safety Functions794
25 Regulator814
26 Option Byte815
- On-Chip Debug Option Byte (000C3H/ 010C3H)816
- Format of User Option Byte817
- Format of On-Chip Debug Option Byte823
- Flash Memory824
27 Flash Memory825
- Serial Programming Using Flash Memory Programmer825
  - Programming Environment826
- Connection of Pins on Board828
  - Port Pins829
- Programming Method830
- Processing Time for each Command When PG-FP5 Is in Use (Reference Value)835
- Self-Programming836
- Security Settings841
- Data Flash843
  - Register Controlling Data Flash Memory844
  - Procedure for Accessing Data Flash Memory845
28 On-Chip Debug Function846
- On-Chip Debug Security ID847
29 Bcd Correction Circuit849
- BCD Correction Circuit Operation850
30 Instruction Set852
- Conventions Used in Operation List853
  - Description of Operation Column854
  - Description of Flag Operation Column855
- Operation List856
31 Electrical Specifications874
- Absolute Maximum Ratings875
- Oscillator Characteristics877
- Peripheral Functions Characteristics893
- Serial Interface IICA909
- Analog Characteristics912
- DC Characteristics918
- AC Characteristics922
- RAM Data Retention Characteristics925
- Timing for Switching Flash Memory Programming Modes926
32 Package Drawing927
Appendix A Revision History928
- A.2 Revision History of Preceding Editions930

Brand	Renesas
Model	RL78/G1H
Category	Microcontrollers
Language	English

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