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HT66F20 Datasheet(PDF) 149 Page - Holtek Semiconductor Inc |
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HT66F20 Datasheet(HTML) 149 Page - Holtek Semiconductor Inc |
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149 / 298 page  Rev. 1.90 148 �e���a�� 18� �01� Rev. 1.90 149 �e���a�� 18� �01� 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 T1AOC:TP1AOutputcontrolbit CompareMatchOutputMode 0:Initiallow 1:Initialhigh PWMMode/SinglePulseOutputMode 0:Activelow 1:Activehigh ThisistheoutputcontrolbitfortheTMoutputpin.Itsoperationdependsupon whetherTMisbeingusedintheCompareMatchOutputModeorinthePWMMode/ SinglePulseOutputMode.IthasnoeffectiftheTMisintheTimer/CounterMode.In theCompareMatchOutputModeitdeterminesthelogicleveloftheTMoutputpin beforeacomparematchoccurs.InthePWMModeitdeterminesifthePWMsignalis activehighoractivelow. Bit2 T1APOL:TP1AOutputpolarityControl 0:Non-invert 1:Invert ThisbitcontrolsthepolarityoftheTP1Aoutputpin.WhenthebitissethightheTM outputpinwillbeinvertedandnotinvertedwhenthebitiszero.Ithasnoeffectifthe TMisintheTimer/CounterMode. Bit1 T1CDN:TM1Countercountupordownflag 0:Countup 1:Countdown Bit0 T1CCLR:SelectTM1Counterclearcondition 0:TM1ComparatorPmatch 1:TM1ComparatorAmatch Thisbitisusedtoselectthemethodwhichclearsthecounter.Rememberthat theEnhancedTMcontainsthreecomparators,ComparatorA,ComparatorBand ComparatorP,butonlyComparatorAorComparatorPanbeselectedtoclearthe internalcounter.WiththeT1CCLRbitsethigh,thecounterwillbeclearedwhena comparematchoccursfromtheComparatorA.Whenthebitislow,thecounterwill beclearedwhenacomparematchoccursfromtheComparatorPorwithacounter overflow.AcounteroverflowclearingmethodcanonlybeimplementediftheCCRP bitsareallclearedtozero.TheT1CCLRbitisnotusedintheSinglePulseorInput CaptureMode. |
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