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HT45F56 Datasheet(PDF) 67 Page - Holtek Semiconductor Inc |
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HT45F56 Datasheet(HTML) 67 Page - Holtek Semiconductor Inc |
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67 / 90 page  Rev. 1.11 66 April 11, 2017 Rev. 1.11 67 April 11, 2017 HT45F56 Shock Detector Flash MCU HT45F56 Shock Detector Flash MCU Interrupts Interruptsareanimportantpartofanymicrocontrollersystem.Whenanexternaleventoran internalfunctionsuchasaTimerModuleoranA/Dconverterrequiresmicrocontrollerattention, theircorrespondinginterruptwillenforceatemporarysuspensionofthemainprogramallowingthe microcontrollertodirectattentiontotheirrespectiveneeds.Thesedevicescontainseveralexternal interruptandinternalinterruptsfunctions.Theexternalinterruptsaregeneratedbytheactionof theexternalINT0andINT1pins,whiletheinternalinterruptsaregeneratedbyvariousinternal functionssuchastheTMs,TimeBase,EEPROM,Comparatoranddebouncecircuit. Interrupt Registers Overallinterruptcontrol,whichbasicallymeansthesettingofrequestflagswhencertain microcontrollerconditionsoccurandthesettingofinterruptenablebitsbytheapplicationprogram, iscontrolledbyaseriesofregisters,locatedintheSpecialPurposeDataMemory,asshownin theaccompanyingtable.TheseregistersaretheINTC0~INTC2registerswhichsetuptheprimary interrupts. Eachregistercontainsanumberofenablebitstoenableordisableindividualinterruptsaswell asinterruptflagstoindicatethepresenceofaninterruptrequest.Thenamingconventionofthese followsaspecificpattern.Firstislistedanabbreviatedinterrupttype,thenthe(optional)numberof thatinterruptfollowedbyeitheran“E”forenable/disablebitor“F”forrequestflag. Function Enable Bit Request Flag Notes Global EMI — — Comparator CPE CPF — Debounce DEBE DEBF — Time Base TBnE TBnF n = 0 ~ 1 EEPROM write operation DEE DEF — CTM CTMPE CTMPF — CTMAE CTMAF Interrupt Register Bit Naming Conventions Register Name Bit 7 6 5 4 3 2 1 0 INTC0 — TB0F DEBF CPF TB0E DEBE CPE EMI INTC1 TB1F DEF CTMAF CTMPF TB1E DEE CTMAE CTMPE Interrupt Registers List |
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