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CHAPTER 18 DTP/EXTERNAL INTERRUPT CIRCUIT
Figure 18.6-2 DTP/external Interrupt Cause and Interrupt Request when the Output of Interrupt Requests
is enabled
●
Notes about interrupts
When the external interrupt function is used, control cannot return from the interrupt processing routine if
the external interrupt request flag bit is "1" and the output of interrupt requests is enabled. In the interrupt
processing routine, the external interrupt request flag bit must be cleared. (When the DTP function is used,
EI
2
OS automatically clears the bit.) For level detection, the external interrupt request flag bit is set again as
soon as it is cleared if the level assumed as an interrupt cause continues to be input. Either disable the
output of interrupt requests or remove the interrupt cause, if required.
H level
Request becomes inactive when
DTP/external interrupt
cause flip-flop is cleared
Removal of the interrupt cause
cause (when the H level
is detected)
Interrupt request to the
interrupt controller
Содержание MB90460 Series
Страница 1: ...The following document contains information on Cypress products ...
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Страница 41: ...22 CHAPTER 1 OVERVIEW ...
Страница 45: ...26 CHAPTER 2 NOTES ON HANDLING DEVICES ...
Страница 83: ...64 CHAPTER 3 CPU ...
Страница 95: ...76 CHAPTER 4 RESET ...
Страница 107: ...88 CHAPTER 5 CLOCK ...
Страница 131: ...112 CHAPTER 6 LOW POWER CONSUMPTION MODE ...
Страница 175: ...156 CHAPTER 7 INTERRUPT ...
Страница 181: ...162 CHAPTER 8 MODE SETTING ...
Страница 223: ...204 CHAPTER 9 I O PORT ...
Страница 237: ...218 CHAPTER 10 TIME BASE TIMER ...
Страница 247: ...228 CHAPTER 11 WATCHDOG TIMER ...
Страница 275: ...256 CHAPTER 12 16 BIT RELOAD TIMER ...
Страница 373: ...354 CHAPTER 14 MULTI FUNCTIONAL TIMER ...
Страница 485: ...466 CHAPTER 16 PWC Timer ...
Страница 531: ...512 CHAPTER 17 UART ...
Страница 559: ...540 CHAPTER 19 DELAYED INTERRUPT GENERATOR MODULE ...
Страница 589: ...570 CHAPTER 20 8 10 BIT A D CONVERTER ...
Страница 601: ...582 CHAPTER 21 ROM CORRECTION FUNCTION ...
Страница 633: ...614 CHAPTER 23 512K 1024K BIT FLASH MEMORY ...
Страница 645: ...626 CHAPTER 24 EXAMPLE OF F2 MC 16LX MB90F462 F462A F463A CONNECTION FOR SERIAL WRITING ...
Страница 715: ...696 APPENDIX ...
Страница 716: ...697 INDEX INDEX The index follows on the next page This is listed in alphabetic order ...
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