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HT66F20 Datasheet(PDF) 117 Page - Holtek Semiconductor Inc

Part # HT66F20
Description  Enhanced A/D Flash Type 8-Bit MCU with EEPROM
PDF  298 Pages
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Manufacturer  HOLTEK [Holtek Semiconductor Inc]
Direct Link  http://www.holtek.com
Logo HOLTEK - Holtek Semiconductor Inc

HT66F20 Datasheet(HTML) 117 Page - Holtek Semiconductor Inc

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Rev. 1.90
116
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Rev. 1.90
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HT66F20/HT66F30/HT66F40/HT66F50/HT66F60
HT66FU30/HT66FU40/HT66FU50/HT66FU60
Enhanced A/D Flash Type 8-Bit MCU with EEPROM
HT66F20/HT66F30/HT66F40/HT66F50/HT66F60
HT66FU30/HT66FU40/HT66FU50/HT66FU60
Enhanced A/D Flash Type 8-Bit MCU with EEPROM
Bit3
TnOC:TPn_0,TPn_1Outputcontrolbit
CompareMatchOutputMode
0:Initiallow
1:Initialhigh
PWMMode
0:Activelow
1:Activehigh
ThisistheoutputcontrolbitfortheTMoutputpin.Itsoperationdependsupon
whetherTMisbeingusedintheCompareMatchOutputModeorinthePWMMode.
IthasnoeffectiftheTMisintheTimer/CounterMode.IntheCompareMatchOutput
ModeitdeterminesthelogicleveloftheTMoutputpinbeforeacomparematch
occurs.InthePWMModeitdeterminesifthePWMsignalisactivehighoractive
low.
Bit2
TnPOL:TPn_0,TPn_1OutputpolarityControl
0:Non-invert
1:Invert
ThisbitcontrolsthepolarityoftheTPn_0orTPn_1outputpin.Whenthebitisset
hightheTMoutputpinwillbeinvertedandnotinvertedwhenthebitiszero.Ithasno
effectiftheTMisintheTimer/CounterMode.
Bit1
TnDPX:TMnPWMperiod/dutyControl
0:CCRP-period;CCRA-duty
1:CCRP-duty;CCRA-period
Thisbit,determineswhichoftheCCRAandCCRPregistersareusedforperiodand
dutycontrolofthePWMwaveform.
Bit0
TnCCLR:SelectTMnCounterclearcondition
0:TMnComparatrorPmatch
1:TMnComparatrorAmatch
Thisbitisusedtoselectthemethodwhichclearsthecounter.Rememberthatthe
CompactTMcontainstwocomparators,ComparatorAandComparatorP,eitherof
whichcanbeselectedtocleartheinternalcounter.WiththeTnCCLRbitsethigh,
thecounterwillbeclearedwhenacomparematchoccursfromtheComparatorA.
Whenthebitislow,thecounterwillbeclearedwhenacomparematchoccursfrom
theComparatorPorwithacounteroverflow.Acounteroverflowclearingmethodcan
onlybeimplementediftheCCRPbitsareallclearedtozero.TheTnCCLRbitisnot
usedinthePWMMode.



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