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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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HT69F360 датащи(PDF) 104 Page - Holtek Semiconductor Inc |
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HT69F360 датащи(HTML) 104 Page - Holtek Semiconductor Inc |
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104 / 235 page  Rev. 1.30 104 �ove��e� 1�� �01� Rev. 1.30 105 �ove��e� 1�� �01� HT69F340/HT69F350/HT69F360 TinyPowerTM I/O Flash MCU with LCD & EEPROM HT69F340/HT69F350/HT69F360 TinyPowerTM I/O Flash MCU with LCD & EEPROM Timer Modules – TM Oneofthemostfundamentalfunctionsinanymicrocontrollerdeviceistheabilitytocontroland measuretime.ToimplementtimerelatedfunctionsthedevicesincludeseveralTimerModules, abbreviatedtothenameTM.TheTMsaremulti-purposetimingunitsandservetoprovide operationssuchasTimer/Counter,InputCapture,CompareMatchOutputandSinglePulseOutput aswellasbeingthefunctionalunitforthegenerationofPWMsignals.EachoftheTMshastwo individualinterrupts.TheadditionofinputandoutputpinsforeachTMensuresthatusersare providedwithtimingunitswithawideandflexiblerangeoffeatures. ThecommonfeaturesofthedifferentTMtypesaredescribedherewithmoredetailedinformation providedintheindividualCompact,StandardandPeriodicTMsections. Introduction ThedevicescontaintwotofourTMsdependinguponwhichdeviceisselected.TheHT69F340 devicecontainsa10-bitCompactTM-CTManda10-bitPeriodicTM-PTM.TheHT69F350device containsa10-bitCompactTM-CTM,a16-bitStandardTM-STManda10-bitPeriodicTM-PTM. TheHT69F360devicecontainsa10-bitCompactTM-CTM,a16-bitStandardTM-STMandtwo10-bit PeriodicTMs-PTM0andPTM1.Althoughsimilarinnature,thedifferentTMtypesvaryintheir featurecomplexity.ThecommonfeaturestotheCompact,StandardandPeriodicTMswillbe describedinthissectionandthedetailedoperationwillbedescribedincorrespondingsections.The mainfeaturesanddifferencesbetweenthethreetypesofTMsaresummarisedintheaccompanying table. Function CTM STM PTM Ti�e�/Counte� √ √ √ Input Captu�e — √ √ Co�pa�e Match Output √ √ √ PWM Channels 1 1 1 Single Pulse Output — 1 1 PWM Align�ent Edge Edge Edge PWM Adjust�ent Pe�iod & Duty Duty o� Pe�iod Duty o� Pe�iod Duty o� Pe�iod TM Function Summary Device CTM STM PTM HT�9F340 10-�it CTM — 10-�it PTM HT�9F350 10-�it CTM 1�-�it STM 10-�it PTM HT�9F3�0 10-�it PTM0 10-�it PTM1 TM Type Reference TM Operation ThethreedifferenttypesofTMsofferadiverserangeoffunctions,fromsimpletimingoperations toPWMsignalgeneration.ThekeytounderstandinghowtheTMoperatesistoseeitintermsof afreerunningcounterwhosevalueisthencomparedwiththevalueofpre-programmedinternal comparators.Whenthefreerunningcounterhasthesamevalueasthepre-programmedcomparator, knownasacomparematchsituation,aTMinterruptsignalwillbegeneratedwhichcanclearthe counterandperhapsalsochangetheconditionoftheTMoutputpin.TheinternalTMcounteris drivenbyauserselectableclocksource,whichcanbeaninternalclockoranexternalpin. |
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