Chapter 13
Serial Interface
IIC Communication
XIII - 57
13.5.2
Operation
Serial Reset
SCIFn has a built-in serial reset function for abnormal operation.
SCnMD0-3 other than SCnMD0.IIC3STE, SCnMD3.IIC3STPC, SCnMD3.IIC3REX, and SCnMD3.IIC3ACKO
must be changed during the serial reset of SCIFn.
SCnSTR.SCnTEMP/SCnREMP/SCnORE, bp6-0 of SCnIICSTR, and SC3MD3.IIC3STPC are initialized by the
serial reset when setting SC3MD2.SCnRSTN to "0".
Generating Transfer Clock (SCnCLK) and Baud Rate Timer Output Clock (BRTM_SCnCLK)
SCnCLK is identical with BRTM_SCnCLK in IIC communication mode.
This function is common with the Clock-Synchronous communication. For more information, see XIII-30.
In slave communication, set BRTM_SCnCLK to detect start/stop condition. (See Table:13.5.1.)
Interrupt Source
A communication completion interrupt (SCnTICR) occurs when transmitting/receiving ACK/NACK or detecting
the forced termination of a communication. A stop condition detection interrupt (SCnSICR) occurs when s stop
condition is detected. (SCnSIRQ doesn’t occur when it is generated by the LSI.)
Generating Start/Restart Condition
When SC3MD0.IIC3STE is "1", a restart condition is generated by setting an address data (consisting of 7-bit
slave a R/W bit) to TXBUFn. A start condition is generated by writing a address data to TXBUFn regard-
less of the value of SC3MD0.IIC3STE.
Generating Stop Condition
A stop condition is generated by writing "1" to SC3MD3.IIC3STPC.
When a stop condition is generated, IIC3STPC is automatically cleared.
Note that a stop condition is generated by writing "1" to IIC3STPC even if SCIFn is not a master.
In addition, a stop condition detection interrupt (SCnSIRQ) does not occur when the LSI generates the stop condi-
tion.
Start Condition Setup Example
Figure:13.5.2 Setting Example of Start Condition
(1)
Start condition
Slave address
Slave address
Restart condition
Data
(2)
(3)
Write slave address in TXBUFn
after setting SCnMD0.IIC3STE to "1"
Write data in TXBUFn
after setting SCnMD0.IIC3STE to "1"
Write slave address in TXBUFn
after setting SCnMD0.IIC3STE to "1"
Содержание MN101L Series
Страница 1: ...Cover MICROCOMPUTER MN101L MN101LR05D 04D 03D 02D LSI User s Manual Pub No 21705 015E ...
Страница 2: ......
Страница 8: ......
Страница 10: ......
Страница 11: ...Contents Contents 0 ...
Страница 22: ... Contents 11 ...
Страница 23: ...I Chapter 1 Overview 1 ...
Страница 62: ...Chapter 1 Overview I 40 Cautions for Circuit Setup ...
Страница 63: ...II Chapter 2 CPU 2 ...
Страница 94: ...Chapter 2 CPU II 32 Reset ...
Страница 95: ...III Chapter 3 Interrupts 3 ...
Страница 143: ...IV Chapter 4 Clock Mode Voltage Control 4 ...
Страница 175: ...V Chapter 5 Watchdog Timer WDT 5 ...
Страница 180: ...Chapter 5 Watchdog Timer WDT V 6 Operation ...
Страница 181: ...VI Chapter 6 Power Supply Voltage Detection 6 ...
Страница 189: ...VII Chapter 7 I O Port 7 ...
Страница 248: ...Chapter 7 I O Port VII 60 Port 8 ...
Страница 249: ...VIII Chapter 8 8 bit Timer 8 ...
Страница 282: ...Chapter 8 8 bit Timer VIII 34 8 bit Timer Cascade Connection ...
Страница 283: ...IX Chapter 9 16 bit Timer 9 ...
Страница 346: ...Chapter 9 16 bit Timer IX 64 IGBT Output with Dead Time ...
Страница 347: ...X Chapter 10 General Purpose Time Base Free Running Timer 10 ...
Страница 361: ...XI Chapter 11 RTC Time Base Timer RTC TBT 11 ...
Страница 371: ...XII Chapter 12 Real Time Clock RTC 12 ...
Страница 389: ...XIII Chapter 13 Serial Interface 13 ...
Страница 458: ...Chapter 13 Serial Interface XIII 70 IIC Communication ...
Страница 459: ...XIV Chapter 14 DMA Controller 14 ...
Страница 472: ...Chapter 14 DMA Controller XIV 14 DMA Data Transfer ...
Страница 473: ...XV Chapter 15 Buzzer 15 ...
Страница 479: ...XVI Chapter 16 A D Converter ADC 16 ...
Страница 493: ...XVII Chapter 17 LCD 17 ...
Страница 530: ...Chapter 17 LCD XVII 38 LCD Display Examples ...
Страница 531: ...XVIII Chapter 18 ReRAM 18 ...
Страница 538: ...Chapter 18 ReRAM XVIII 8 Command Library ...
Страница 539: ...XIX Chapter 19 On Board Debugger 19 ...
Страница 542: ...Chapter 19 On Board Debugger XIX 4 List of on board debugging functions ...
Страница 543: ...XX Chapter 20 Appendix 20 ...
Страница 555: ...Chapter 20 Appendix Instruction map XX 13 ...