HT69F240 datasheet(82/172 Pages) HOLTEK

82 / 172 page

Rev. 1.20

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Rev. 1.20

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HT69F240

I/O 8-Bit Flash MCU with LED/LCD Driver

HT69F240

I/O 8-Bit Flash MCU with LED/LCD Driver

initiallevelbychangingthelevelofthePTONbitfromlowtohigh.

InthePWMMode,thePTIO1andPTIO0bitsdeterminehowtheTMoutputpin

changesstatewhenacertaincomparematchconditionoccurs.ThePWMoutput

functionismodifiedbychangingthesetwobits.Itisnecessarytoonlychangethe

valuesofthePTIO1andPTIO0bitsonlyaftertheTMnhasbeenswitchedoff.

UnpredictablePWMoutputswilloccurifthePTIO1andPTIO0bitsarechanged

whentheTMisrunning.

Bit3

PTOC:PTPOutputcontrolbit

CompareMatchOutputMode

0:Initiallow

1:Initialhigh

PWMMode/SinglePulseOutputMode

0:Activelow

1:Activehigh

ThisistheoutputcontrolbitfortheTMoutputpin.Itsoperationdependsupon

whetherTMisbeingusedintheCompareMatchOutputModeorinthePWMMode/

SinglePulseOutputMode.IthasnoeffectiftheTMisintheTimer/CounterMode.In

theCompareMatchOutputModeitdeterminesthelogicleveloftheTMoutputpin

beforeacomparematchoccurs.InthePWMModeitdeterminesifthePWMsignalis

activehighoractivelow.

Bit2

PTPOL:PTPOutputpolarityControl

0:Non-invert

1:Invert

ThisbitcontrolsthepolarityofthePTPoutputpin.WhenthebitissethightheTM

outputpinwillbeinvertedandnotinvertedwhenthebitiszero.Ithasnoeffectifthe

TMisintheTimer/CounterMode.

Bit1

PTCAPTS:PTMCapturetriggersourceselect

0:FromPTPIpin

1:FromPTCKpin

Bit0

PTCCLR:SelectPTMCounterclearcondition

0:PTMComparatorPmatch

1:PTMComparatorAmatch

Thisbitisusedtoselectthemethodwhichclearsthecounter.Rememberthatthe

PeriodicTMcontainstwocomparators,ComparatorAandComparatorP,eitherof

whichcanbeselectedtocleartheinternalcounter.WiththePTCCLRbitsethigh,

thecounterwillbeclearedwhenacomparematchoccursfromtheComparatorA.

Whenthebitislow,thecounterwillbeclearedwhenacomparematchoccursfrom

theComparatorPorwithacounteroverflow.Acounteroverflowclearingmethodcan

onlybeimplementediftheCCRPbitsareallclearedtozero.ThePTCCLRbitisnot

usedinthePWM,SinglePulseorInputCaptureMode.

HT69F240 Datasheet(PDF) 82 Page - Holtek Semiconductor Inc

HT69F240 Datasheet(HTML) 82 Page - Holtek Semiconductor Inc

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