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HT66F007 Datasheet(PDF) 59 Page - Holtek Semiconductor Inc |
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HT66F007 Datasheet(HTML) 59 Page - Holtek Semiconductor Inc |
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59 / 131 page  Rev. 1.41 58 April 11, 2017 Rev. 1.41 59 April 11, 2017 HT66F007/HT66F008 Cost-Effective A/D Flash MCU with EEPROM HT66F007/HT66F008 Cost-Effective A/D Flash MCU with EEPROM Timer Modules – TM Oneofthemostfundamentalfunctionsinanymicrocontrollerdeviceistheabilitytocontroland measuretime.ToimplementtimerelatedfunctionsthedevicesincludeseveralTimerModules, abbreviatedtothenameTM.TheTMsaremulti-purposetimingunitsandservetoprovide operationssuchasTimer/Counter,CompareMatchOutputandSinglePulseOutputaswellas beingthefunctionalunitforthegenerationofPWMsignals.EachoftheTMshastwoindividual interrupts.TheadditionofinputandoutputpinsforeachTMensuresthatusersareprovidedwith timingunitswithawideandflexiblerangeoffeatures. ThecommonfeaturesofthedifferentTMtypesaredescribedherewithmoredetailedinformation providedintheindividualCompactandStandardTMsections. Introduction Eachdevicecontainstwo10-bitCompactTMsanda16-bitStandardTM,the10-bitCTMsare namedtoTM0andTM1,the16-bitSTMisnamedtoTM2.Althoughsimilarinnature,thedifferent TMtypesvaryintheirfeaturecomplexity.ThecommonfeaturestotheCompactandStandard TMswillbedescribedinthissectionandthedetailedoperationwillbedescribedincorresponding sections.ThemainfeaturesanddifferencesbetweenthetwotypesofTMsaresummarisedinthe accompanyingtable. Function CTM STM Timer/Counter √ √ Compare Match Output √ √ PWM Channels 1 1 Single Pulse Output — 1 PWM Alignment Edge Edge PWM Adjustment Period & Duty Duty or Period Duty or Period TM Function Summary TM0 TM1 TM2 10-bit CTM 10-bit CTM 16-bit STM TM Name/Type Reference TM Operation ThetwodifferenttypesofTMsofferadiverserangeoffunctions,fromsimpletimingoperations toPWMsignalgeneration.ThekeytounderstandinghowtheTMoperatesistoseeitintermsof afreerunningcounterwhosevalueisthencomparedwiththevalueofpre-programmedinternal comparators.Whenthefreerunningcounterhasthesamevalueasthepre-programmedcomparator, knownasacomparematchsituation,aTMinterruptsignalwillbegeneratedwhichcanclearthe counterandperhapsalsochangetheconditionoftheTMoutputpin.TheinternalTMcounteris drivenbyauserselectableclocksource,whichcanbeaninternalclockoranexternalpin. |
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