User`s guide

Rev. 1.10 66 November 14, 2014 Rev. 1.10 67 November 14, 2014
HT66FW2230
Wireless Charger A/D Flash 8-Bit MCU
Compact Type TM Operating Modes
TheCompactTypeTMcanoperateinoneofthreeoperatingmodes,CompareMatchOutputMode,
PWMModeorTimer/CounterMode.TheoperatingmodeisselectedusingtheT1M1andT1M0
bitsintheTM1C1register.
Compare Match Output Mode
Toselectthismode,bitsT1M1andT1M0intheTM1C1register,shouldbesetto“00”respectively.
Inthismodeoncethecounterisenabledandrunningitcanbeclearedbythreemethods.Theseare
acounteroverow,acomparematchfromComparatorAandacomparematchfromComparatorP.
WhentheT1CCLRbitislow,therearetwowaysinwhichthecountercanbecleared.Oneiswhen
acomparematchoccursfromComparatorP,theotheriswhentheCCRPbitsareallzerowhich
allowsthecountertooverow.HerebothT1AFandT1PFinterruptrequestagsfortheComparator
AandComparatorPrespectively,willbothbegenerated.
IftheT1CCLRbitintheTM1C1registerishighthenthecounterwillbeclearedwhenacompare
matchoccursfromComparatorA.However,hereonlytheTnAFinterruptrequestflagwillbe
generatedevenifthevalueoftheCCRPbitsislessthanthatoftheCCRAregisters.Thereforewhen
T1CCLRishighnoTnPFinterruptrequestagwillbegenerated.IftheCCRAbitsareallzero,the
counterwilloverowwhenitsreachesitsmaximum10-bit,3FFHex,value,howeverheretheT1AF
interruptrequestagwillnotbegenerated.
Asthenameofthemodesuggests,afteracomparisonismade,theTMoutputpinwillchange
state.TheTMoutputpinconditionhoweveronlychangesstatewhenaT1AFinterruptrequestag
isgeneratedafteracomparematchoccursfromComparatorA.TheT1PFinterruptrequestflag,
generatedfromacomparematchoccursfromComparatorP,willhavenoeffectontheTMoutput
pin.ThewayinwhichtheTMoutputpinchangesstatearedeterminedbytheconditionofthe
T1IO1andT1IO0bitsintheTM1C1register.TheTMoutputpincanbeselectedusingtheT1IO1
andT1IO0bitstogohigh,togolowortotogglefromitspresentconditionwhenacomparematch
occursfromComparatorA.TheinitialconditionoftheTMoutputpin,whichissetupafterthe
T1ONbitchangesfromlowtohigh,issetupusingtheT1OCbit.NotethatiftheT1IO1andT1IO0
bitsarezerothennopinchangewilltakeplace.