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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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HT45F4MA датащи(PDF) 58 Page - Holtek Semiconductor Inc |
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HT45F4MA датащи(HTML) 58 Page - Holtek Semiconductor Inc |
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58 / 145 page  Rev. 1.20 58 De�e��e� 1�� 201� Rev. 1.20 59 De�e��e� 1�� 201� HT45F4MA/HT45FH4MA/HT45FH4MA-1 Power Bank Flash MCU HT45F4MA/HT45FH4MA/HT45FH4MA-1 Power Bank Flash MCU Function STM PTM Ti�e�/Counte� √ √ I/P Captu�e √ √ Co�pa�e Mat�h Output √ √ PWM Channels 1 1 Single Pulse Output 1 1 PWM Align�ent Edge Edge PWM Adjust�ent Pe�iod & Duty Duty o� Pe�iod Duty o� Pe�iod TM Function Summary TM0 TM1 1�-�it STM 10-�it PTM TM Name/Type Reference TM Operation ThetwodifferenttypesofTMsofferadiverserangeoffunctions,fromsimpletimingoperations toPWMsignalgeneration.ThekeytounderstandinghowtheTMoperatesistoseeitintermsof afreerunningcounterwhosevalueisthencomparedwiththevalueofpre-programmedinternal comparators.Whenthefreerunningcounterhasthesamevalueasthepre-programmedcomparator, knownasacomparematchsituation,aTMinterruptsignalwillbegeneratedwhichcanclearthe counterandperhapsalsochangetheconditionoftheTMoutputpin.TheinternalTMcounteris drivenbyauserselectableclocksource,whichcanbeaninternalclockoranexternalpin. TM Clock Source TheclocksourcewhichdrivesthemaincounterineachTMcanoriginatefromvarioussources. TheselectionoftherequiredclocksourceisimplementedusingtheTnCK2~TnCK0bitsintheTM controlregisters.TheclocksourcecanbearatioofthesystemclockfSYSortheinternalhighclock fH,thefTBCclocksourceortheexternalTCKnpin.TheTCKnpinclocksourceisusedtoallowan externalsignaltodrivetheTMasanexternalclocksourceorforeventcounting. TM Interrupts ThetwodifferenttypesofTMshavetwointernalinterrupts,theinternalcomparatorAorcomparator P,whichgenerateaTMinterruptwhenacomparematchconditionoccurs.WhenaTMinterruptis generated,itcanbeusedtoclearthecounterandalsotochangethestateoftheTMoutputpin. |
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