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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) 45 Page - Holtek Semiconductor Inc |
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HT45F2020 датащи(HTML) 45 Page - Holtek Semiconductor Inc |
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45 / 85 page  Rev. 1.00 44 April 11, 2017 Rev. 1.00 45 April 11, 2017 HT45F2020/HT45F2022 Sound Effect Generator Flash MCU HT45F2020/HT45F2022 Sound Effect Generator Flash MCU Periodic Type TM – PTM ThePeriodicTypeTMcontainsfiveoperatingmodes,whichareCompareMatchOutput,Timer/ EventCounter,CaptureInput,SinglePulseOutputandPWMOutputmodes.ThePeriodicTMcan alsobecontrolledwithtwoexternalinputpinsandcandrivetwoexternaloutputpin. PTM Core PTM Input Pin PTM Output Pin 10-bit PTM PTCK, PTPI PTP, PTPB fSYS fSYS/4 fH/64 fH/16 fSUB PTCK 000 001 010 011 100 101 110 111 PTCK2~PTCK0 10-bit Count-up Counter 10-bit Comparator P CCRP b0~b9 b0~b9 10-bit Comparator A PTON PTPAU Comparator A Match Comparator P Match Counter Clear 0 1 Output Control Polarity Control Pin Control PTP PTOC PTM1, PTM0 PTIO1, PTIO0 PTMAF Interrupt PTMPF Interrupt PTPOL PAS0 CCRA PTCCLR Edge Detector PTPI PTIO1, PTIO0 fSUB 1 0 Pin Control PTCAPTS PTPB PAS0 Periodic Type TM Block Diagram Periodic TM Operation ThesizeofPeriodicTMis10-bitwideanditscoreisa10-bitcount-upcounterwhichisdrivenby auserselectableinternalorexternalclocksource.Therearealsotwointernalcomparatorswiththe names,ComparatorAandComparatorP.Thesecomparatorswillcomparethevalueinthecounter withCCRPandCCRAregisters.TheCCRPandCCRAcomparatorsare10-bitwidewhosevalueis respectivelycomparedwithallcounterbits. Theonlywayofchangingthevalueofthe10-bitcounterusingtheapplicationprogramisto clearthecounterbychangingthePTONbitfromlowtohigh.Thecounterwillalsobecleared automaticallybyacounteroverfloworacomparematchwithoneofitsassociatedcomparators. Whentheseconditionsoccur,aPTMinterruptsignalwillalsousuallybegenerated.ThePeriodic TypeTMcanoperateinanumberofdifferentoperationalmodes,canbedrivenbydifferentclock sourcesincludinganinputpinandcanalsocontroltheoutputpins.Alloperatingsetupconditions areselectedusingrelevantinternalregisters. |
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