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Moteur de recherche de fiches techniques de composants électroniques |
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Moteur de recherche de fiches techniques de composants électroniques |
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HT46R0042 Fiches technique(PDF) 21 Page - Holtek Semiconductor Inc |
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HT46R0042 Fiches technique(HTML) 21 Page - Holtek Semiconductor Inc |
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21 / 83 page  Rev. 1.00 �0 ��to�e� ��� �01� Rev. 1.00 �1 ��to�e� ��� �01� HT46R0042 Cost-Effective A/D 8-Bit OTP MCU HT46R0042 Cost-Effective A/D 8-Bit OTP MCU Oscillator Variousoscillatoroptionsoffertheuserawiderangeoffunctionsaccordingtotheirvarious applicationrequirements.Theflexiblefeaturesoftheoscillatorfunctionsensurethatthebest optimizationcanbeachievedintermsofspeedandpowersaving. System Oscillator Overview Inadditiontobeingthesourceofthemainsystemclocktheoscillatorsalsoprovideclocksources fortheWatchdogTimerfunction,PWMfunction,Timer/EventcounterandTimeBase. Type Name Freq. Inte�nal High Speed RC HIRC 8MHz Inte�nal Low Speed RC LIRC 1�kHz Oscillator Types System Clock Configurations Thereisonesystemoscillatorimplementedinthedevice,internal8MHzRC,HIRC.Alsothereisan internal12kHzRCoscillatorLIRCusedastheclocksourcefortheWDTfunction,PWMfunction, Timer/EventcounterandTimeBase.Moredetailsaredescribedintheaccompanysections. Internal RC Oscillator – HIRC TheinternalRCoscillatorisafullyintegratedsystemoscillatorrequiringnoexternalcomponents. TheinternalRCoscillatorhasthefrequencyof8MHz.Devicetrimmingduringthemanufacturing processandtheinclusionofinternalfrequencycompensationcircuitisusedtoensurethatthe influenceofthepowersupplyvoltage,temperatureandprocessvariationsontheoscillation frequencyareminimized.Notethatthisinternalsystemclockoptionrequiresnoexternalpinsforits operation.RefertotheA.C.Characteristicsformorefrequencyaccuracydetails. Internal 12kHZ Oscillator – LIRC TheLIRCisafullyself-containedfreerunningon-chipRCoscillatorwithatypicalfrequencyof 12kHzat5V,requiringnoexternalcomponentsforitsimplementation.Whenthedeviceentersthe SleepMode,thesystemclockwillstoprunningbuttheLIRCoscillatorcontinuestofree-runand tokeepthewatchdogactive.However,topreservepowerincertainapplicationstheLIRCcanbe disabledbydisablingtheWDTfunction,PWMfunction,Timer/EventcounterandTimeBaseinthe haltmode. |
Numéro de pièce similaire - HT46R0042 |
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Description similaire - HT46R0042 |
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