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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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HT45F2020 датащи(PDF) 47 Page - Holtek Semiconductor Inc |
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HT45F2020 датащи(HTML) 47 Page - Holtek Semiconductor Inc |
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47 / 85 page  Rev. 1.00 46 April 11, 2017 Rev. 1.00 47 April 11, 2017 HT45F2020/HT45F2022 Sound Effect Generator Flash MCU HT45F2020/HT45F2022 Sound Effect Generator Flash MCU Bit3 PTON:PTMCounterOn/Offcontrol 0:Off 1:On Thisbitcontrolstheoverallon/offfunctionofthePTM.Settingthebithighenables thecountertorunwhileclearingthebitdisablesthePTM.Clearingthisbittozero willstopthecounterfromcountingandturnoffthePTMwhichwillreduceitspower consumption.Whenthebitchangesstatefromlowtohightheinternalcountervalue willberesettozero,howeverwhenthebitchangesfromhightolow,theinternal counterwillretainitsresidualvalueuntilthebitreturnshighagain.IfthePTMisin theCompareMatchOutputModeorthePWMoutputModeorSinglePulseOutput Mode,thenthePTMoutputpinwillberesettoitsinitialcondition,asspecifiedbythe PTOCbit,whenthePTONbitchangesfromlowtohigh. Bit2~0 Unimplemented,readas“0” PTMC1 Register Bit 7 6 5 4 3 2 1 0 Name 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,thePTMoutputpincontrolwillbedisabled. Bit5~4 PTIO1~PTIO0:SelectPTMexternalpinPTPorPTPIfunction CompareMatchOutputMode 00:Nochange 01:Outputlow 10:Outputhigh 11:Toggleoutput PWMOutputMode/SinglePulseOutputMode 00:PWMoutputinactivestate 01:PWMoutputactivestate 10:PWMoutput 11:SinglePulseOutput CaptureInputMode 00:InputcaptureatrisingedgeofPTPIorPTCK 01:InputcaptureatfallingedgeofPTPIorPTCK 10:Inputcaptureatrising/fallingedgeofPTPIorPTCK 11:Inputcapturedisabled Timer/CounterMode Unused ThesetwobitsareusedtodeterminehowthePTMoutputpinchangesstatewhena certainconditionisreached.Thefunctionthatthesebitsselectdependsuponinwhich modethePTMisrunning. |
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