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HT67F5630 Datasheet(PDF) 65 Page - Holtek Semiconductor Inc |
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HT67F5630 Datasheet(HTML) 65 Page - Holtek Semiconductor Inc |
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65 / 147 page  Rev. 1.20 �� De�e��e� 1�� 201� Rev. 1.20 �5 De�e��e� 1�� 201� HT67F5630 TinyPowerTM 24-Bit Delta Sigma A/D Flash MCU with LCD & EEPROM HT67F5630 TinyPowerTM 24-Bit Delta Sigma A/D Flash MCU with LCD & EEPROM Timer Modules – TM Oneofthemostfundamentalfunctionsinanymicrocontrollerdeviceistheabilitytocontroland measuretime.ToimplementtimerelatedfunctionseachdeviceincludesseveralTimerModules, abbreviatedtothenameTM.TheTMsaremulti-purposetimingunitsandservetoprovide operationssuchasTimer/Counter,InputCapture,CompareMatchOutputandSinglePulseOutput aswellasbeingthefunctionalunitforthegenerationofPWMsignals.EachoftheTMshastwo individualinterrupts.TheadditionofinputandoutputpinsforeachTMensuresthatusersare providedwithtimingunitswithawideandflexiblerangeoffeatures. ThecommonfeaturesofthedifferentTMtypesaredescribedherewithmoredetailedinformation providedintheindividualCompactandPeriodicTMsections. Introduction ThedevicecontainstwoTMshavingareferencenameofTM0andTM1.EachindividualTMcan becategorisedasacertaintype,namelyCompactTypeTMorPeriodicTypeTM.Althoughsimilar innature,thedifferentTMtypesvaryintheirfeaturecomplexity.Thecommonfeaturestoallofthe CompactandPeriodicTMswillbedescribedinthissection,thedetailedoperationregardingeachof theTMtypeswillbedescribedinseparatesections.Themainfeaturesanddifferencesbetweenthe twotypesofTMsaresummarisedintheaccompanyingtable. Function CTM PTM Ti�e�/Counte� √ √ I/P Captu�e — √ Co�pa�e Mat�h Output √ √ PWM Channels 1 1 Single Pulse Output — 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 10-�it CTM 10-�it PTM TM Name/Type Reference TM Operation ThetwodifferenttypesofTMofferadiverserangeoffunctions,fromsimpletimingoperations toPWMsignalgeneration.ThekeytounderstandinghowtheTMoperatesistoseeitintermsof afreerunningcounterwhosevalueisthencomparedwiththevalueofpre-programmedinternal comparators.Whenthefreerunningcounterhasthesamevalueasthepre-programmedcomparator, knownasacomparematchsituation,aTMinterruptsignalwillbegeneratedwhichcanclearthe counterandperhapsalsochangetheconditionoftheTMoutputpin.TheinternalTMcounteris drivenbyauserselectableclocksource,whichcanbeaninternalclockoranexternalpin. TM Clock Source TheclocksourcewhichdrivesthemaincounterineachTMcanoriginatefromvarioussources. TheselectionoftherequiredclocksourceisimplementedusingtheTnCK2~TnCK0bitsintheTM controlregisters.TheclocksourcecanbearatioofeitherthesystemclockfSYSortheinternalhigh clockfH,thefSUBclocksourceortheexternalTCKnpin.TheTCKnpinclocksourceisusedtoallow anexternalsignaltodrivetheTMasanexternalclocksourceorforeventcounting. |
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