Chapter 13
Serial Interface
XIII - 36
Clock-Synchronous Communication
Interrupt Source Select
For SCIFn (n = 0, 1), interrupt source can be selected with SCnMD2.SCnIFS. When SCnIFS is "1", an interrupt
occurs by an empty detection of TXBUFn (detecting that SCnSTR.SCnTEMP is "0"). When SCnIFS is "0", an
interrupt (communication complete interrupt) occurs after single byte communication has finishes.
For SCIFn (n = 2, 3), interrupt source can be selected with SCnMD1.SCnIFS. When SCnIFS is "1", an interrupt
occurs by an empty detection of TXBUFn (detecting that SCnSTR.SCnTEMP is "0"). When SCnIFS is "0", an
interrupt (communication complete interrupt) occurs after single byte communication has been completed.
Transmission BUSY Flag (SCIF0 and SCIF1)
When SCnMD1.SCnSBOS is "1", SCnSTR.SCnTBSY is set to "1" by writing data to TXBUFn.
When SCnSTR.SCnTEMP is "0", SCnSTR.SCnTBSY is cleared to "0" by a communication complete interrupt.
If SCnTEMP is "1" by writing data to TXBUFn before a communication completion interrupt, SCnTBSY is held
at "1".
Reception BUSY Flag (SCIF0 and SCIF1)
When SCnMD1.SCnSBIS is "1", SCnSTR.SCnRBSY is set to "1" by writing data to TXBUFn.
While SCnSTR.SCnTEMP is "0", SCnSTR.SCnRBSY is cleared to "0" by a communication complete interrupt.
If SCnTEMP is "1" by writing data to TXBUFn before a communication completion interrupt, SCnRBSY is held
at "1".
Communication BUSY Flag (SCIF2 and SCIF3)
SCnSTR0.SCnTBSY is set to "1" when data is written to TXBUFn. When SCnSTR0.SCnTEMP is "0",
SCnSTR0.SCnTBSY is cleared to "0" by a communication complete interrupt.
If SCnTEMP is "1" by writing data to TXBUFn before a communication completion interrupt, SCnTBSY is held
at "1".
Reception Error Flag
When receiving new data before reading out the data in RXBUFn, an overrun error occurs and the following flags
are set.
- For SCIFn (n = 0, 1), SCnSTR.SCnORE and SCnSTR.SCnERE are set to "1".
SCnSTR.SCnREMP is cleared to "0" by reading data of RXBUFn, and SCnORE and SCnERE are cleared
to "0" by a communication complete interrupt when SCnSTR.SCnREMP is "0".
- For SCIFn (n = 2, 3), SCnSTR.SCnORE is set to "1".
Clear SCnSTR.SCnORE by software.
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 ...