DS12C887+

发布时间：2017/4/19 15:00:30
所属类别：集成电路 » 集成电路
公司：深圳勤思达科技有限公司
联系人：朱生

DS12C887+属性

本站价格：
用途：时钟IC
规格：DIP
市场价格：
生产厂家：MAX

DS12C887+描述

TheDS12885,DS12887,andDS12C887real-timeclocks(RTCs)aredesignedtobedirectreplacementsfortheDS1285andDS1287.Thedevicesprovideareal-timeclock/calendar,onetime-of-dayalarm,threemaskableinterruptswithacommoninterruptoutput,aprogrammablesquarewave,and114bytesofbattery-backedstaticRAM(113bytesintheDS12C887andDS12C887A).TheDS12887integratesaquartzcrystalandlithiumenergysourceintoa24-pinencapsulatedDIPpackage.TheDS12C887addsacenturybyteataddress32h.Foralldevices,thedateattheendofthemonthisautomaticallyadjustedformonthswithfewerthan31days,includingcorrectionforleapyears.Thedevicesalsooperateineither24-houror12-hourformatwithanAM/PMindicator.Aprecisiontemperature-compensatedcircuitmonitorsthestatusofVCC.Ifaprimarypowerfailureisdetected,thedeviceautomaticallyswitchestoabackupsupply.Alithiumcoin-cellbatterycanbeconnectedtotheVBATinputpinontheDS12885tomaintaintimeanddateoperationwhenprimarypowerisabsent.Thedeviceisaccessedthroughamultiplexedbyte-wideinterface,whichsup-portsbothIntelandMotorolamodes.