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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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HT45F4MA 데이터시트(PDF) 68 Page - Holtek Semiconductor Inc |
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HT45F4MA 데이터시트(HTML) 68 Page - Holtek Semiconductor Inc |
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68 / 145 page  Rev. 1.20 �8 De�e��e� 1�� 201� Rev. 1.20 �9 De�e��e� 1�� 201� HT45F4MA/HT45FH4MA/HT45FH4MA-1 Power Bank Flash MCU HT45F4MA/HT45FH4MA/HT45FH4MA-1 Power Bank Flash MCU Standard Type TM Operating Modes TheStandardTypeTMcanoperateinoneoffiveoperatingmodes,CompareMatchOutputMode, PWMOutputMode,SinglePulseOutputMode,CaptureInputModeorTimer/CounterMode.The operatingmodeisselectedusingtheT0M1andT0M0bitsintheTM0C1register. Compare Output Mode Toselectthismode,bitsT0M1andT0M0intheTM0C1register,shouldbesetto00respectively. Inthismodeoncethecounterisenabledandrunningitcanbeclearedbythreemethods.Theseare acounteroverflow,acomparematchfromComparatorAandacomparematchfromComparatorP. WhentheT0CCLRbitislow,therearetwowaysinwhichthecountercanbecleared.Oneiswhen acomparematchfromComparatorP,theotheriswhentheCCRPbitsareallzerowhichallows thecountertooverflow.HerebothT0AFandT0PFinterruptrequestflagsforComparatorAand ComparatorPrespectively,willbothbegenerated. IftheT0CCLRbitintheTM0C1registerishighthenthecounterwillbeclearedwhenacompare matchoccursfromComparatorA.However,hereonlytheT0AFinterruptrequestflagwillbe generatedevenifthevalueoftheCCRPbitsislessthanthatoftheCCRAregisters.Thereforewhen T0CCLRishighnoT0PFinterruptrequestflagwillbegenerated.IntheCompareMatchOutput Mode,theCCRAcannotbesetto“0”. Asthenameofthemodesuggests,afteracomparisonismade,theTMoutputpin,willchange state.TheTMoutputpinconditionhoweveronlychangesstatewhenaT0AFinterruptrequestflag isgeneratedafteracomparematchoccursfromComparatorA.TheT0PFinterruptrequestflag, generatedfromacomparematchoccursfromComparatorP,willhavenoeffectontheTMoutput pin.ThewayinwhichtheTMoutputpinchangesstatearedeterminedbytheconditionofthe T0IO1andT0IO0bitsintheTM0C1register.TheTMoutputpincanbeselectedusingtheT0IO1 andT0IO0bitstogohigh,togolowortotogglefromitspresentconditionwhenacomparematch occursfromComparatorA.TheinitialconditionoftheTMoutputpin,whichissetupafterthe T0ONbitchangesfromlowtohigh,issetupusingtheT0OCbit.NotethatiftheT0IO1andT0IO0 bitsarezerothennopinchangewilltakeplace. |
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