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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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HT69F360 데이터시트(PDF) 136 Page - Holtek Semiconductor Inc |
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HT69F360 데이터시트(HTML) 136 Page - Holtek Semiconductor Inc |
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136 / 235 page  Rev. 1.30 13� �ove��e� 1�� �01� Rev. 1.30 137 �ove��e� 1�� �01� HT69F340/HT69F350/HT69F360 TinyPowerTM I/O Flash MCU with LCD & EEPROM HT69F340/HT69F350/HT69F360 TinyPowerTM I/O Flash MCU with LCD & EEPROM ThesetwobitsareusedtodeterminehowtheTMoutputpinchangesstatewhen acertainconditionisreached.Thefunctionthatthesebitsselectdependsuponin whichmodetheTMisrunning.IntheCompareMatchOutputMode,thePTnIO1and PTnIO0bitsdeterminehowtheTMoutputpinchangesstatewhenacomparematch occursfromtheComparatorA.TheTMoutputpincanbesetuptoswitchhigh,switch lowortotoggleitspresentstatewhenacomparematchoccursfromtheComparatorA. Whenthebitsarebothzero,thennochangewilltakeplaceontheoutput.Theinitial valueoftheTMoutputpinshouldbesetupusingthePTnOCbitinthePTMnC1 register.NotethattheoutputlevelrequestedbythePTnIO1andPTnIO0bitsmustbe differentfromtheinitialvaluesetupusingthePTnOCbitotherwisenochangewill occurontheTMoutputpinwhenacomparematchoccurs.AftertheTMoutputpin changesstate,itcanberesettoitsinitiallevelbychangingthelevelofthePTnONbit fromlowtohigh. Bit3 PTnOC:PTPnOutputcontrolbit CompareMatchOutputMode 0:Initiallow 1:Initialhigh PWMMode/SinglePulseOutputMode 0:Activelow 1:Activehigh ThisistheoutputcontrolbitfortheTMoutputpin.Itsoperationdependsupon whetherTMisbeingusedintheCompareMatchOutputModeorinthePWMMode/ SinglePulseOutputMode.IthasnoeffectiftheTMisintheTimer/CounterMode.In theCompareMatchOutputModeitdeterminesthelogicleveloftheTMoutputpin beforeacomparematchoccurs.InthePWMModeitdeterminesifthePWMsignalis activehighoractivelow. Bit2 PTnPOL:PTPnOutputpolaritycontrol 0:Non-invert 1:Invert ThisbitcontrolsthepolarityofthePTPnoutputpin.WhenthebitissethightheTM outputpinwillbeinvertedandnotinvertedwhenthebitiszero.Ithasnoeffectifthe TMisintheTimer/CounterMode. Bit1 PTnCKS:InputCapturetriggersourceselection 0:ExternalClocksourceofCaptureInputModecomesfromPTPn 1:ExternalClocksourceofCaptureInputModecomesfromPTCKn Bit0 PTnCCLR:SelectPTMnCounterclearcondition 0:PTMnComparatorPmatch 1:PTMnComparatorAmatch Thisbitisusedtoselectthemethodwhichclearsthecounter.RememberthattheP-type TMcontainstwocomparators,ComparatorAandComparatorP,eitherofwhichcan beselectedtocleartheinternalcounter.WiththePTnCCLRbitsethigh,thecounter willbeclearedwhenacomparematchoccursfromtheComparatorA.Whenthebitis low,thecounterwillbeclearedwhenacomparematchoccursfromtheComparator Porwithacounteroverflow.Acounteroverflowclearingmethodcanonlybe implementediftheCCRPbitsareallclearedtozero.ThePTnCCLRbitisnotusedin thePWM,SinglePulseorInputCaptureMode. |
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