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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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HT45F75 데이터시트(PDF) 90 Page - Holtek Semiconductor Inc |
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HT45F75 데이터시트(HTML) 90 Page - Holtek Semiconductor Inc |
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90 / 190 page  Rev. 1.10 90 De�e��e� 1�� �01� Rev. 1.10 91 De�e��e� 1�� �01� HT45F75 Body Fat Scale Flash MCU HT45F75 Body Fat Scale Flash MCU Periodic Type TM Operating Modes ThePeriodicTypeTMcanoperateinoneoffiveoperatingmodes,CompareMatchOutputMode, PWMOutputMode,SinglePulseOutputMode,CaptureInputModeorTimer/CounterMode.The operatingmodeisselectedusingtheTnM1andTnM0bitsinthePTMnC1register. Compare Match Output Mode Toselectthismode,bitsTnM1andTnM0inthePTMnC1register,shouldbeallclearedto00 respectively.Inthismodeoncethecounterisenabledandrunningitcanbeclearedbythree methods.Theseareacounteroverflow,acomparematchfromComparatorAandacomparematch fromComparatorP.WhentheTnCCLRbitislow,therearetwowaysinwhichthecountercanbe cleared.OneiswhenacomparematchoccursfromComparatorP,theotheriswhentheCCRPbits areallzerowhichallowsthecountertooverflow.HereboththeTnAFandTnPFinterruptrequest flagsforComparatorAandComparatorPrespectively,willbothbegenerated. IftheTnCCLRbitinthePTMnC1registerishighthenthecounterwillbeclearedwhenacompare matchoccursfromComparatorA.However,hereonlytheTnAFinterruptrequestflagwillbe generatedevenifthevalueoftheCCRPbitsislessthanthatoftheCCRAregisters.Thereforewhen TnCCLRishighnoTnPFinterruptrequestflagwillbegenerated.IntheCompareMatchOutput Mode,theCCRAcannotbeclearedtozero. Asthenameofthemodesuggests,afteracomparisonismade,theTMoutputpin,willchange state.TheTMoutputpinconditionhoweveronlychangesstatewhenaTnAFinterruptrequestflag isgeneratedafteracomparematchoccursfromComparatorA.TheTnPFinterruptrequestflag, generatedfromacomparematchfromComparatorP,willhavenoeffectontheTMoutputpin.The wayinwhichtheTMoutputpinchangesstatearedeterminedbytheconditionoftheTnIO1and TnIO0bitsinthePTMnC1register.TheTMoutputpincanbeselectedusingtheTnIO1andTnIO0 bitstogohigh,togolowortotogglefromitspresentconditionwhenacomparematchoccursfrom ComparatorA.TheinitialconditionoftheTMoutputpin,whichissetupaftertheTnONbitchanges fromlowtohigh,issetupusingtheTnOCbit.NotethatiftheTnIO1,TnIO0bitsarezerothenno pinchangewilltakeplace. |
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