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HT46R002 датащи(PDF) 61 Page - Holtek Semiconductor Inc

номер детали HT46R002
подробное описание детали  Cost-Effective A/D 8-Bit OTP MCU
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производитель  HOLTEK [Holtek Semiconductor Inc]
домашняя страница  http://www.holtek.com
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HT46R002 датащи(HTML) 61 Page - Holtek Semiconductor Inc

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Rev. 1.21
60
April 11, 2017
Rev. 1.21
61
April 11, 2017
HT46R002/HT46R003
Cost-Effective A/D 8-Bit OTP MCU
HT46R002/HT46R003
Cost-Effective A/D 8-Bit OTP MCU
External Interrupt
Foranexternalinterrupttooccur,theglobalinterruptenablebit,EMI,andexternalinterruptenable
bit,INTE,mustfirstbeset.Anactualexternalinterruptwilltakeplacewhentheexternalinterrupt
requestflag,INTFisset,asituationthatwilloccurwhenanedgetransitionappearsontheexternal
INTline.Thetypeoftransitionthatwilltriggeranexternalinterrupt,whetherhightolow,lowto
highorbothisdeterminedbytheINTES0andINTES1bits,whicharebits6and7respectivelyin
theCTRL1controlregister.Thesetwobitscanalsodisabletheexternalinterruptfunction.
INTES1
INTES0
Request Flag
0
0
External interrupt disable
0
1
Rising edge trigger
1
0
Falling edge trigger
1
1
Dual edge trigger
Theexternalinterruptpinispin-sharedwiththeI/OpinPA2andcanonlybeusedasanexternal
interruptpinifthecorrespondingexternalinterruptenablebitintheINTC0registerhasbeenset
andtheedgetriggertypehasbeenselectedusingtheCTRL1register.Thepinmustalsobesetas
aninputbysettingthecorrespondingPAC.2bitintheportcontrolregister.Whentheinterruptis
enabled,thestackisnotfullandatransitionappearsontheexternalinterruptpin,asubroutine
calltotheexternalinterruptvectoratlocation04H,willtakeplace.Whentheinterruptisserviced,
theexternalinterruptrequestflag,INTF,willbeautomaticallyresetandtheEMIbitwillbe
automaticallyclearedtodisableotherinterrupts.Notethatanypull-highresistorconnectionsonthis
pinwillremainvalidevenifthepinisusedasanexternalinterruptinput
Timer/Event Counter Interrupt
ForaTimer/EventCounterinterrupttooccur,theglobalinterruptenablebit,EMIandthe
correspondingtimerinterruptenablebitT0Emustfirstbeset.AnactualTimer/EventCounter
interruptwilltakeplacewhentheTimer/EventCounterrequestflagT0Fisset,asituationthatwill
occurwhentherelevantTimer/EventCounteroverflows.Whentheinterruptisenabled,thestackis
notfullandaTimer/EventCounteroverflowoccurs,asubroutinecalltotherelevanttimerinterrupt
vector,willtakeplace.Whentheinterruptisserviced,thetimerinterruptrequestflagT0Fwillbe
automaticallyresetandtheEMIbitwillbeautomaticallyclearedtodisableotherinterrupts.
A/D Converter Interrupt
ThedevicesincludeA/Dinterrupt.ForanA/Dinterrupttooccur,theglobalinterruptenablebit
EMIandthecorrespondinginterruptenablebitADEmustbefirstset.AnactualA/Dinterruptwill
takeplacewhentheA/DconverterrequestflagADFisset,asituationthatwilloccurwhenanA/D
conversionprocesshascompleted.Whentheinterruptisenabled,thestackisnotfullandanA/D
conversionprocessfinishesexecution,asubroutinecalltotherelevantA/Dinterruptvector,will
takeplace.Whentheinterruptisserviced,theA/DinterruptrequestflagADFwillbeautomatically
resetandtheEMIbitwillbeautomaticallyclearedtodisableotherinterrupts.Asthisinterrupt
vectorlocationissharedwithotherinterrupts,tobeeffectiveitmustbeselectedviaconfiguration
option.


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