Chapter 13
Serial Interface
XIII - 58
IIC Communication
Detection of Start/Restart Condition and Stop Condition
When a start/restart condition is detected, SC3IICSTR.IIC3STRT is set to "1".
When the received slave address is equal to SCnAD, SC3IICSTR.IIC3STRT is cleared to "0" by setting data to
TXBUFn during the interrupt processing right after the slave address reception. When the received slave address
is not equal to SCnAD, SC3IICSTR.IIC3STRT is cleared automatically by hardware.
Confirm a busy flag to detect a stop condition.
Conditions to detect a start or a stop condition are shown in the table below.
Table:13.5.1 Start Condition/Stop Condition Detection Condition
Busy Flag
IIC3BUSBSY is set when a start condition is detected on the IIC bus and is cleared when a stop condition is
detected. It is possible to check that IIC communication is executed between devices on IIC bus.
ACK/NACK Transmission and Detection
When the LSI receive data, select ACK/NACK transmission with SCnMD3.IIC3ACKO.
When the LSI send data, confirm that ACK/NACK is received with SCnMD3.IIC3ACKO.
First Bit Specification for Transfer
First bit for transfer can be selected. Select MSB first or LSB first with SCnMD0.IIC3DIR.
Start Condition
"High" period of SCLn
≥
(SCnCLK period)
×
3
SDAn setup time
≥
(SCnCLK period)
×
2
SDAn hold time
≥
(SCnCLK period)
×
2
Stop Condition
"High" period of SCLn
≥
(SCnCLK period)
×
3
SDAn setup time
≥
(SCnCLK period)
×
2
SDAn hold time
≥
(SCnCLK period)
×
2
SCL "High" period
SCLn
SDAn
hold
setup
SCL "High" period
SCLn
SDAn
hold
setup
Summary of Contents for MN101L Series
Page 1: ...Cover MICROCOMPUTER MN101L MN101LR05D 04D 03D 02D LSI User s Manual Pub No 21705 015E ...
Page 2: ......
Page 8: ......
Page 10: ......
Page 11: ...Contents Contents 0 ...
Page 22: ... Contents 11 ...
Page 23: ...I Chapter 1 Overview 1 ...
Page 62: ...Chapter 1 Overview I 40 Cautions for Circuit Setup ...
Page 63: ...II Chapter 2 CPU 2 ...
Page 94: ...Chapter 2 CPU II 32 Reset ...
Page 95: ...III Chapter 3 Interrupts 3 ...
Page 143: ...IV Chapter 4 Clock Mode Voltage Control 4 ...
Page 175: ...V Chapter 5 Watchdog Timer WDT 5 ...
Page 180: ...Chapter 5 Watchdog Timer WDT V 6 Operation ...
Page 181: ...VI Chapter 6 Power Supply Voltage Detection 6 ...
Page 189: ...VII Chapter 7 I O Port 7 ...
Page 248: ...Chapter 7 I O Port VII 60 Port 8 ...
Page 249: ...VIII Chapter 8 8 bit Timer 8 ...
Page 282: ...Chapter 8 8 bit Timer VIII 34 8 bit Timer Cascade Connection ...
Page 283: ...IX Chapter 9 16 bit Timer 9 ...
Page 346: ...Chapter 9 16 bit Timer IX 64 IGBT Output with Dead Time ...
Page 347: ...X Chapter 10 General Purpose Time Base Free Running Timer 10 ...
Page 361: ...XI Chapter 11 RTC Time Base Timer RTC TBT 11 ...
Page 371: ...XII Chapter 12 Real Time Clock RTC 12 ...
Page 389: ...XIII Chapter 13 Serial Interface 13 ...
Page 458: ...Chapter 13 Serial Interface XIII 70 IIC Communication ...
Page 459: ...XIV Chapter 14 DMA Controller 14 ...
Page 472: ...Chapter 14 DMA Controller XIV 14 DMA Data Transfer ...
Page 473: ...XV Chapter 15 Buzzer 15 ...
Page 479: ...XVI Chapter 16 A D Converter ADC 16 ...
Page 493: ...XVII Chapter 17 LCD 17 ...
Page 530: ...Chapter 17 LCD XVII 38 LCD Display Examples ...
Page 531: ...XVIII Chapter 18 ReRAM 18 ...
Page 538: ...Chapter 18 ReRAM XVIII 8 Command Library ...
Page 539: ...XIX Chapter 19 On Board Debugger 19 ...
Page 542: ...Chapter 19 On Board Debugger XIX 4 List of on board debugging functions ...
Page 543: ...XX Chapter 20 Appendix 20 ...