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HT66F4530 数据表(PDF) 88 Page - Holtek Semiconductor Inc |
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HT66F4530 数据表(HTML) 88 Page - Holtek Semiconductor Inc |
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88 / 224 page  Rev. 1.00 88 De�e��e� �1� �01� Rev. 1.00 89 De�e��e� �1� �01� HT66F4530/HT66F4540/HT66F4550 A/D Flash MCU with Dual Operational Amplifiers HT66F4530/HT66F4540/HT66F4550 A/D Flash MCU with Dual Operational Amplifiers Timer Modules – TM Oneofthemostfundamentalfunctionsinanymicrocontrollerthesedevicesistheabilityto controlandmeasuretime.ToimplementtimerelatedfunctionseachdeviceincludesseveralTimer Modules,abbreviatedtothenameTM.TheTMsaremulti-purposetimingunitsandservetoprovide operationssuchasTimer/Counter,InputCapture,CompareMatchOutputandSinglePulseOutput aswellasbeingthefunctionalunitforthegenerationofPWMsignals.EachoftheTMshastwo individualinterrupts.TheadditionofinputandoutputpinsforeachTMensuresthatusersare providedwithtimingunitswithawideandflexiblerangeoffeatures. ThecommonfeaturesofthedifferentTMtypesaredescribedherewithmoredetailedinformation providedintheindividualStandardandPeriodicTMsections. Introduction ThesedevicescontainuptofourTMsandeachindividualTMcanbecategorisedasacertaintype, namelyStandardTypeTMorPeriodicTypeTM.Althoughsimilarinnature,thedifferentTMtypes varyintheirfeaturecomplexity.ThecommonfeaturestoalloftheStandardandPeriodicTMs willbedescribedinthissection.ThedetailedoperationregardingeachoftheTMtypeswillbe describedinseparatesections.ThemainfeaturesanddifferencesbetweenthetwotypesofTMsare summarisedintheaccompanyingtable. Function STM PTM Ti�e�/Counte� √ √ Input 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 Device STM PTM HT��F4530 10-�it STM0 10-�it PTM0 HT��F4540 10-�it STM0 10-�it PTM0 10-�it PTM1 HT��F4550 10-�it STM0 10-�it STM1 10-�it PTM0 10-�it PTM1 TM Name/Type Reference TM Operation ThedifferenttypesofTMofferadiverserangeoffunctions,fromsimpletimingoperationsto PWMsignalgeneration.ThekeytounderstandinghowtheTMoperatesistoseeitintermsof afreerunningcounterwhosevalueisthencomparedwiththevalueofpre-programmedinternal comparators.Whenthefreerunningcounterhasthesamevalueasthepre-programmedcomparator, knownasacomparematchsituation,aTMinterruptsignalwillbegeneratedwhichcanclearthe counterandperhapsalsochangetheconditionoftheTMoutputpin.TheinternalTMcounteris drivenbyauserselectableclocksource,whichcanbeaninternalclockoranexternalpin. |
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