HT68F005 datasheet(62/93 Pages) HOLTEK

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Rev. 1.00

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Rev. 1.00

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HT68F005/HT68F006

Enhanced I/O Flash Type MCU

HT68F005/HT68F006

Enhanced I/O Flash Type MCU

Compact Type TM Operating Modes

TheCompactTypeTMcanoperateinoneofthreeoperatingmodes,CompareMatchOutputMode,

PWMModeorTimer/CounterMode.TheoperatingmodeisselectedusingtheTnM1andTnM0

bitsintheTMnC1register.

Compare Match Output Mode

Toselectthismode,bitsTnM1andTnM0intheTMnC1register,shouldbesetto“00”respectively.

Inthismodeoncethecounterisenabledandrunningitcanbeclearedbythreemethods.Theseare

acounteroverflow,acomparematchfromComparatorAandacomparematchfromComparatorP.

WhentheTnCCLRbitislow,therearetwowaysinwhichthecountercanbecleared.Oneiswhena

comparematchoccursfromComparatorP,theotheriswhentheCCRPbitsareallzerowhichallows

thecountertooverflow.HerebothTnAFandTnPFinterruptrequestflagsfortheComparatorAand

ComparatorPrespectively,willbothbegenerated.

IftheTnCCLRbitintheTMnC1registerishighthenthecounterwillbeclearedwhenacompare

matchoccursfromComparatorA.However,hereonlytheTnAFinterruptrequestflagwillbe

generatedevenifthevalueoftheCCRPbitsislessthanthatoftheCCRAregisters.Thereforewhen

TnCCLRishighnoTnPFinterruptrequestflagwillbegenerated.IftheCCRAbitsareallzero,the

counterwilloverflowwhenitsreachesitsmaximum10-bit,3FFHex,value,howeverheretheTnAF

interruptrequestflagwillnotbegenerated.

Asthenameofthemodesuggests,afteracomparisonismade,theTMoutputpinwillchange

state.TheTMoutputpinconditionhoweveronlychangesstatewhenaTnAFinterruptrequestflag

isgeneratedafteracomparematchoccursfromComparatorA.TheTnPFinterruptrequestflag,

generatedfromacomparematchoccursfromComparatorP,willhavenoeffectontheTMoutput

pin.ThewayinwhichtheTMoutputpinchangesstatearedeterminedbytheconditionofthe

TnIO1andTnIO0bitsintheTMnC1register.TheTMoutputpincanbeselectedusingtheTnIO1

andTnIO0bitstogohigh,togolowortotogglefromitspresentconditionwhenacomparematch

occursfromComparatorA.TheinitialconditionoftheTMoutputpin,whichissetupafterthe

TnONbitchangesfromlowtohigh,issetupusingtheTnOCbit.NotethatiftheTnIO1andTnIO0

bitsarezerothennopinchangewilltakeplace.

HT68F005 датащи(PDF) 62 Page - Holtek Semiconductor Inc