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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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HT66F4530 데이터시트(PDF) 115 Page - Holtek Semiconductor Inc |
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HT66F4530 데이터시트(HTML) 115 Page - Holtek Semiconductor Inc |
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115 / 224 page  Rev. 1.00 114 De�e��e� �1� �01� Rev. 1.00 115 De�e��e� �1� �01� HT66F4530/HT66F4540/HT66F4550 A/D Flash MCU with Dual Operational Amplifiers HT66F4530/HT66F4540/HT66F4550 A/D Flash MCU with Dual Operational Amplifiers Timer/Counter Mode Toselectthismode,bitsPTnM1andPTnM0inthePTMnC1registershouldbesetto11 respectively.TheTimer/CounterModeoperatesinanidenticalwaytotheCompareMatchOutput Modegeneratingthesameinterruptflags.TheexceptionisthatintheTimer/CounterModethe TMoutputpinisnotused.ThereforetheabovedescriptionandTimingDiagramsfortheCompare MatchOutputModecanbeusedtounderstanditsfunction.AstheTMoutputpinisnotusedinthis mode,thepincanbeusedasanormalI/Opinorotherpin-sharedfunction. PWM Output Mode Toselectthismode,bitsPTnM1andPTnM0inthePTMnC1registershouldbesetto10 respectively.ThePWMfunctionwithinthePTMnisusefulforapplicationswhichrequirefunctions suchasmotorcontrol,heatingcontrol,illuminationcontroletc.Byprovidingasignaloffixed frequencybutofvaryingdutycycleonthePTMnoutputpin,asquarewaveACwaveformcanbe generatedwithvaryingequivalentDCRMSvalues. AsboththeperiodanddutycycleofthePWMwaveformcanbecontrolled,thechoiceofgenerated waveformisextremelyflexible.InthePWMOutputMode,thePTnCCLRbithasnoeffectonthe PWMoperation.BothoftheCCRAandCCRPregistersareusedtogeneratethePWMwaveform, oneregisterisusedtocleartheinternalcounterandthuscontrolthePWMwaveformfrequency, whiletheotheroneisusedtocontrolthedutycycle.ThePWMwaveformfrequencyanddutycycle canthereforebecontrolledbythevaluesintheCCRAandCCRPregisters. Aninterruptflag,oneforeachoftheCCRAandCCRP,willbegeneratedwhenacomparematch occursfromeitherComparatorAorComparatorP.ThePTnOCbitinthePTMnC1registerisused toselecttherequiredpolarityofthePWMwaveformwhilethetwoPTnIO1andPTnIO0bitsare usedtoenablethePWMoutputortoforcethePTMnoutputpintoafixedhighorlowlevel.The PTnPOLbitisusedtoreversethepolarityofthePWMoutputwaveform. • 10-bit PTMn, PWM Output Mode, Edge-aligned Mode CCRP 1~1023 0 Pe�iod 1~10�3 10�4 Duty CCRA IffSYS=12MHz,PTMnclocksourceselectfSYS/4,CCRP=512andCCRA=128, ThePTMnPWMoutputfrequency=(fSYS/4)/512=fSYS/2048=5.8594kHz,duty=128/(2×256)=25%. IftheDutyvaluedefinedbytheCCRAregisterisequaltoorgreaterthanthePeriodvalue,thenthe PWMoutputdutyis100%. |
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