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HT66F019 bảng dữ liệu(PDF) 91 Page - Holtek Semiconductor Inc |
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HT66F019 bảng dữ liệu(HTML) 91 Page - Holtek Semiconductor Inc |
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91 / 175 page  Rev. 1.00 90 De�e��e� 01� �01� Rev. 1.00 91 De�e��e� 01� �01� HT66F019 A/D Flash MCU with EEPROM HT66F019 A/D Flash MCU with EEPROM • PTMC1 Register Bit 7 6 5 4 3 2 1 0 Na�e PTM1 PTM0 PTIO1 PTIO0 PTOC PTPOL PTCAPTS PTCCLR R/W R/W R/W R/W R/W R/W R/W R/W R/W POR 0 0 0 0 0 0 0 0 Bit7~6 PTM1~PTM0:SelectPTMOperatingMode 00:CompareMatchOutputMode 01:CaptureInputMode 10:PWMOutputModeorSinglePulseOutputMode 11:Timer/CounterMode ThesebitssetuptherequiredoperatingmodeforthePTM.Toensurereliableoperation thePTMshouldbeswitchedoffbeforeanychangesaremadetothePTM1andPTM0 bits.IntheTimer/CounterMode,thePTMoutputpincontrolmustbedisabled. Bit5~4 PTIO1~PTIO0:SelectPTPOutputfunction CompareMatchOutputMode 00:Nochange 01:Outputlow 10:Outputhigh 11:Toggleoutput PWMOutputMode/SinglePulseOutputMode 00:PWMoutputinactivestate 01:PWMoutputactivestate 10:PWMoutput 11:SinglePulseOutput CaptureInputMode 00:InputcaptureatrisingedgeofPTPorPTCK 01:InputcaptureatfallingedgeofPTPorPTCK 10:Inputcaptureatrising/fallingedgeofPTPorPTCK 11:Inputcapturedisabled Timer/CounterMode Unused ThesetwobitsareusedtodeterminehowthePTMoutputpinchangesstatewhena certainconditionisreached.Thefunctionthatthesebitsselectdependsuponinwhich modethePTMisrunning. IntheCompareMatchOutputMode,thePTIO1andPTIO0bitsdeterminehowthe PTMoutputpinchangesstatewhenacomparematchoccursfromtheComparatorA. ThePTMoutputpincanbesetuptoswitchhigh,switchlowortotoggleitspresent statewhenacomparematchoccursfromtheComparatorA.Whenthebitsareboth zero,thennochangewilltakeplaceontheoutput.TheinitialvalueofthePTMoutput pinshouldbesetupusingthePTOCbitinthePTMC1register.Notethattheoutput levelrequestedbythePTIO1andPTIO0bitsmustbedifferentfromtheinitialvalue setupusingthePTOCbitotherwisenochangewilloccuronthePTMoutputpinwhen acomparematchoccurs.AfterthePTMoutputpinchangesstate,itcanberesettoits initiallevelbychangingthelevelofthePTONbitfromlowtohigh. InthePWMOutputMode,thePTIO1andPTIO0bitsdeterminehowthePTM outputpinchangesstatewhenacertaincomparematchconditionoccurs.ThePTM outputfunctionismodifiedbychangingthesetwobits.Itisnecessarytoonlychange thevaluesofthePTIO1andPTIO0bitsonlyafterthePTMhasbeenswitchedoff. UnpredictablePWMoutputswilloccurifthePTIO1andPTIO0bitsarechanged whenthePTMisrunning. |
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