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HT45F4MA bảng dữ liệu(PDF) 123 Page - Holtek Semiconductor Inc |
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HT45F4MA bảng dữ liệu(HTML) 123 Page - Holtek Semiconductor Inc |
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123 / 145 page  Rev. 1.20 122 De�e��e� 1�� 201� Rev. 1.20 123 De�e��e� 1�� 201� HT45F4MA/HT45FH4MA/HT45FH4MA-1 Power Bank Flash MCU HT45F4MA/HT45FH4MA/HT45FH4MA-1 Power Bank Flash MCU EEPROM Interrupt TheEEPROMinterruptiscontainedwithintheMulti-functionInterrupt.AnEEPROMInterrupt requestwilltakeplacewhentheEEPROMInterruptrequestflag,DEF,isset,whichoccurs whenanEEPROMWritecycleends.Toallowtheprogramtobranchtoitsrespectiveinterrupt vectoraddress,theglobalinterruptenablebit,EMI,andEEPROMInterruptenablebit,DEE, andassociatedMulti-functioninterruptenablebit,MF2E,mustfirstbeset.Whentheinterruptis enabled,thestackisnotfullandanEEPROMWritecycleends,asubroutinecalltotherespective EEPROMInterruptvector,willtakeplace.WhentheEEPROMInterruptisserviced,theEMIbit willbeautomaticallyclearedtodisableotherinterrupts,howeveronlytheMulti-functioninterrupt requestflagwillbealsoautomaticallycleared.AstheDEFflagwillnotbeautomaticallycleared,it hastobeclearedbytheapplicationprogram. LVD Interrupt TheLowVoltageDetectorInterruptiscontainedwithintheMulti-functionInterrupt.AnLVD InterruptrequestwilltakeplacewhentheLVDInterruptrequestflag,LVF,isset,whichoccurs whentheLowVoltageDetectorfunctiondetectsalowpowersupplyvoltage.Toallowtheprogram tobranchtoitsrespectiveinterruptvectoraddress,theglobalinterruptenablebit,EMI,andLow VoltageInterruptenablebit,LVE,andassociatedMulti-functioninterruptenablebit,MF2E,must firstbeset.Whentheinterruptisenabled,thestackisnotfullandalowvoltageconditionoccurs, asubroutinecalltotheLVDInterruptvector,willtakeplace.WhentheLowVoltageInterruptis serviced,theEMIbitwillbeautomaticallyclearedtodisableotherinterrupts,howeveronlythe Multi-functioninterruptrequestflagwillbealsoautomaticallycleared.AstheLVFflagwillnotbe automaticallycleared,ithastobeclearedbytheapplicationprogram. TM Interrupts TheStandardTypeTMhastwointerruptswhilethePeriodicTypeTMalsohastwointerrupts.Allof theTMinterruptsarecontainedwithintheMulti-functionInterrupts.FortheStandardandPeriodic TypeTMstherearetwointerruptrequestflagsTnPFandTnAFandtwoenablebitsTnPEand TnAE.ATMinterruptrequestwilltakeplacewhenanyoftheTMrequestflagsareset,asituation whichoccurswhenaTMcomparatorPorcomparatorAmatchsituationhappens. Toallowtheprogramtobranchtoitsrespectiveinterruptvectoraddress,theglobalinterruptenable bit,EMI,andtherespectiveTMInterruptenablebit,andassociatedMulti-functioninterruptenable bit,MFnF(MF0ForMF1F),mustfirstbeset.Whentheinterruptisenabled,thestackisnotfull andaTMcomparatormatchsituationoccurs,asubroutinecalltotherelevantTMInterruptvector locations,willtakeplace.WhentheTMinterruptisserviced,theEMIbitwillbeautomatically clearedtodisableotherinterrupts,howeveronlytherelatedMFnFflag(MF0ForMF1F)willbe automaticallycleared.AstheTMinterruptrequestflagswillnotbeautomaticallycleared,theyhave tobeclearedbytheapplicationprogram. |
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