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实时时钟电路选型指南INTERSILSELECTIONGUIDEQ3/Q42011REALTIMECLOCKICsHigh-AccuracyRTCModules,Feature-RichRTCs,Low-Cost,Low-PowerRTCsINTERSILSELECTIONGUIDEREALTIMECLOCKICsFEATURE-RICHANDCOST-EFFECTIVEREALTIMECLOCKICsFROMINTERSILIntersilRealIntersil’sfamilyofRealTimeClockproductsTimeClocksOverviewofferawidevarietyofusefulindustry-standardfunctionsandfeaturesincludingclocksandcalendars,programmablealarmswitheventrecording,non-volatilememoryforsystempersonalitydataanduniquedeviceIDs,and……