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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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HT45F2020 датащи(PDF) 64 Page - Holtek Semiconductor Inc |
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HT45F2020 датащи(HTML) 64 Page - Holtek Semiconductor Inc |
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64 / 85 page  Rev. 1.00 64 April 11, 2017 Rev. 1.00 65 April 11, 2017 HT45F2020/HT45F2022 Sound Effect Generator Flash MCU HT45F2020/HT45F2022 Sound Effect Generator Flash MCU TBC Register Bit 7 6 5 4 3 2 1 0 Name TBON — — — — TB2 TB1 TB0 R/W R/W — — — — R/W R/W R/W POR 0 — — — — 0 0 0 Bit7 TBON:TimeBaseEnableControl 0:Disable 1:Enable Bit6~3 Unimplemented,readas“0” Bit2~0 TB2~TB0:TimeBasetime-outperiodselection 000:28/fPSC 001:29/fPSC 010:210/fPSC 011:211/fPSC 100:212/fPSC 101:213/fPSC 110:214/fPSC 111:215/fPSC Timer Module Interrupts ThePTMhastwointerruptswhicharebothcontainedwithintheMulti-functionInterrupt.For thePTMtherearetwointerruptrequestflagsPTMPFandPTMAFandtwoenablebitsPTMPE andPTMAE.APTMinterruptrequestwilltakeplacewhenanyofthePTMrequestflagsisset,a situationwhichoccurswhenaPTMcomparatorPorcomparatorAmatchsituationhappens. Toallowtheprogramtobranchtoitsrespectiveinterruptvectoraddress,theglobalinterruptenable bit,EMI,andtherespectivePTMInterruptenablebit,andtheassociatedMulti-functioninterrupt enablebit,MFF,mustfirstbeset.Whentheinterruptisenabled,thestackisnotfullandaPTM comparatormatchsituationoccurs,asubroutinecalltotherelevantPTMInterruptvectorlocations, willtakeplace.WhenthePTMinterruptisserviced,theEMIbitwillbeautomaticallycleared todisableotherinterrupts,howeveronlytherelatedMFFflagwillbeautomaticallycleared.As thePTMinterruptrequestflagswillnotbeautomaticallycleared,theyhavetobeclearedbythe applicationprogram. Interrupt Wake-up Function Eachoftheinterruptfunctionshasthecapabilityofwakingupthemicrocontrollerwheninthe SLEEPorIDLEMode.Awake-upisgeneratedwhenaninterruptrequestflagchangesfromlowto highandisindependentofwhethertheinterruptisenabledornot.Caremustthereforebetakenif spuriouswake-upsituationsaretobeavoided.Ifaninterruptwake-upfunctionistobedisabledthen thecorrespondinginterruptrequestflagshouldbesethighbeforethedeviceenterstheSLEEPor IDLEMode.Theinterruptenablebitshavenoeffectontheinterruptwake-upfunction. Programming Considerations Bydisablingtherelevantinterruptenablebits,arequestedinterruptcanbepreventedfrombeing serviced,however,onceaninterruptrequestflagisset,itwillremaininthisconditioninthe interruptregisteruntilthecorrespondinginterruptisservicedoruntiltherequestflagisclearedby theapplicationprogram. WhereacertaininterruptiscontainedwithinaMulti-functioninterrupt,thenwhentheinterrupt serviceroutineisexecuted,asonlytheMulti-functioninterruptrequestflags,MFF,willbe automaticallycleared,theindividualrequestflagforthefunctionneedstobeclearedbythe applicationprogram. |
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