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RX-8025T.pdf

RX-8025T

renzhd
2012-12-17 0人阅读 举报 0 0 暂无简介

简介:本文档为《RX-8025Tpdf》,可适用于工程科技领域

ETMEApplicationManualRealTimeClockModuleRXTNOTICE•Thematerialissubjecttochangewithoutnotice•AnypartofthismaterialmaynotbereproducedorduplicatedinanyformoranymeanswithoutthewrittenpermissionofEpsonToyocom•Theinformation,appliedcircuit,program,usageetc,writteninthismaterialisjustforreferenceEpsonToyocomdoesnotassumeanyliabilityfortheoccurrenceofinfringinganypatentorcopyrightofathirdpartyThismaterialdoesnotauthorizethelicensingforanypatentorintellectualcopyrights•AnyproductdescribedinthismaterialmaycontaintechnologyorthesubjectrelatingtostrategicproductsunderthecontroloftheForeignExchangeandForeignTradeLawofJapanandmayrequireanexportlicencefromtheMinistryofInternationalTradeandindustryorotherapprovalfromanothergovernmentagency•Youarerequestednottousetheproducts(andanytechnicalinformationfurnished,ifany)forthedevelopmentandormanufactureofweaponofmassdestructionorforothermilitarypurposesYouarealsorequestedthatyouwouldnotmaketheproductsavailabletoanythirdpartywhomayusetheproductsforsuchprohibitedpurposes•TheseproductsareintendedforgeneraluseinelectronicequipmentWhenusingtheminspecificapplicationsthatrequireextremelyhighreliabilitysuchasapplicationsstatedbelow,itisrequiredtoobtainthepermissionfromEpsonToyocominadvanceSpaceequipment(artificialsatellites,rockets,etc)Transportationvehiclesandrelated(automobiles,aircraft,trains,vessels,etc)MedicalinstrumentstosustainlifeSubmarinetransmittersPowerstationsandrelatedFireworkequipmentandsecurityequipmenttrafficcontrolequipmentandothersrequiringequivalentreliability•InthismanualforEpsonTyocom,productcodeandmarkingwillstillremainaspreviouslyidentifiedpriortothemergerDuetotheongoingstrategyofgradualunificationofpartnumbers,pleasereviewproductcodeandmarkingastheywillchangeduringthecourseofthecomingmonthsWeapologizefortheinconvenience,butwewilleventuallyhaveaunifiedpartnumberingsystemforEpsonToyocomwhichwillbeuserfriendlyRXTContentsOverviewBlockDiagramTerminaldescriptionTerminalconnectionsPinFunctionsAbsoluteMaximumRatingsRecommendedOperatingConditionsFrequencyCharacteristicsElectricalCharacteristicsDCCharacteristicsACCharacteristicsUseMethodsOverviewofFunctionsDescriptionofRegistersFixedcycleTimerInterruptFunctionTimeUpdateInterruptFunctionAlarmInterruptFunctionReadingWritingDataviatheICBusInterfaceBackupandRecoveryConnectionwithTypicalMicrocontrollerWhenusedasaclocksource(kHzTCXO)ExternalDimensionsMarkingLayoutExternaldimensionsMarkinglayoutApplicationnotesNotesonhandlingNotesonpackagingRX–TPageETMEICBusInterfaceRealtimeClockModuleRX−−−−T•FeaturesbuiltinkHzDTCXO,HighStability•SupportsICBus'shighspeedmode(kHz)•Alarminterruptfunctionforday,date,hour,andminutesettings•Fixedcycletimerinterruptfunction•Timeupdateinterruptfunction(Seconds,minutes)•kHzoutputwithOEfunction(FOEandFOUTpins)•Autocorrectionofleapyears(fromto)•Wideinterfacevoltagerange:VtoV•Widetimekeepingvoltagerange:VtoV•Lowcurrentconsumption:µAV(Typ)TheICBUSisatrademarkofNXPSemiconductorsOverviewThismoduleisanICbusinterfacecompliantrealtimeclockwhichincludesakHzDTCXOInadditiontoprovidingacalendar(year,month,date,day,hour,minute,second)functionandaclockcounterfunction,thismoduleprovidesanabundanceofotherfunctionsincludinganalarmfunction,fixedcycletimerfunction,timeupdateinterruptfunction,andkHzoutputfunctionThedevicesinthismodulearefabricatedviaaCMOSprocessforlowcurrentconsumption,whichenableslongtermbatterybackupAllofthesemanyfunctionsareimplementedinaSOPpackageBlockDiagramkHzDTCXOkHzCLOCKandCALENDARTIMERREGISTERALARMREGISTERFOUTCONTROLLERCONTROLREGISTERandSYSTEMCONTROLLERDIVIDERINTERRUPTCONTROLLERICBUSINTERFACECIRCUITFOUTFOEINTSCLSDARX–TPageETMETerminaldescriptionTerminalconnectionsRX−TT(CE)NCSCLSDAFOUTT(VPP)NCGNDTESTINTVDDNCFOENCSOP−pinPinFunctionsSignalnameIOFunctionT(CE)Input*Usebythemanufacturefortesting(Donotconnectexternally)SCLInputThisistheserialclockinputpinforICBuscommunicationsFOUTOutputThisistheCMOSoutputpinwithoutputcontrolprovidedviatheFOEpinWhenFOE="H"(highlevel),thispinoutputsakHzsignalWhenoutputisstopped,theFOUTpin="HiZ"(highimpedance)TESTInput*Usebythemanufacturefortesting(Donotconnectexternally)VDD−ThispinisconnectedtoapositivepowersupplyFOEInputThisisaninputpinusedtocontroltheoutputmodeoftheFOUTpinWhenthispin'slevelishigh,theFOUTpinisinoutputmodeWhenitislow,outputviatheFOUTpinisstoppedINTOutputThispinsisusedtooutputalarmsignals,timersignals,timeupdatesignals,andothersignalsThispinisanopendrainpinGND−ThispinisconnectedtoagroundT(VPP)−*Usebythemanufacturefortesting(Donotconnectexternally)SDAIOThispin'ssignalisusedforinputandoutputofaddress,data,andACKbits,synchronizedwiththeserialclockusedforICcommunicationsSincetheSDApinisanNchopendrainpinduringoutput,besuretoconnectasuitablepullupresistancerelativetothesignallinecapacityNC−ThispinisnotconnectedtotheinternalICLeaveNCpinsopenorconnectthemtoGNDorVDDNote:BesuretoconnectabypasscapacitorratedatleastµFbetweenVDDandGNDRX–TPageETMEAbsoluteMaximumRatingsGND=VItemSymbolConditionRatingUnitSupplyvoltageVDDBetweenVDDandGND−toVInputvoltage()VINFOEpinGND−toVDDVInputvoltage()VINSCLandSDApinsGND−toVOutputvoltage()VOUTFOUTpinGND−toVDDVOutputvoltage()VOUTSDAandINTpinsGND−toVStoragetemperatureTSTGWhenstoredseparately,withoutpackaging−to°CRecommendedOperatingConditionsGND=VItemSymbolConditionMinTypMaxUnitOperatingsupplyvoltageVDDInterfacevoltageVTempcompensationvoltageVTEMTemperaturecompensationvoltageVClocksupplyvoltageVCLK−VOperatingtemperatureTOPRNocondensation−°CFrequencyCharacteristicsGND=VItemSymbolConditionRatingUnitFrequencystability∆ffTa=toºC,VDD=VTa=−toºC,VDD=V±(∗)±(∗)×FrequencyvoltagecharacteristicsfVTa=°C,VDD=VtoV±Max×VOscillationstarttimetSTATa=°C,VDD=VTa=−toºC,VDD=VtoVMaxMaxsAgingfaTa=°C,VDD=V,firstyear±Max×−year*)Equivalenttosecondsofmonthdeviation*)EquivalenttosecondsofmonthdeviationRX–TPageETMEElectricalCharacteristicsDCCharacteristics*Unlessotherwisespecified,GND=V,VDD=VtoV,Ta=−°Cto°CItemSymbolConditionMinTypMaxUnitCurrentconsumption()IDDVDD=VCurrentconsumption()IDDfSCL=Hz,INT=VDDFOE=GNDFOUT:outputOFF(HighZ)CompensationintervalsVDD=VµACurrentconsumption()IDDVDD=VCurrentconsumption()IDDfSCL=Hz,INT=VDDFOE=GNDFOUT:kHz,CL=pFCompensationintervalsVDD=VµACurrentconsumption()IDDVDD=VCurrentconsumption()IDDfSCL=Hz,INT=VDDFOE=GNDFOUT:kHz,CL=pFCompensationintervalsVDD=VµACurrentconsumption()IDDVDD=VCurrentconsumption()IDDfSCL=Hz,INT=VDDFOE=GNDFOUT:outputOFF(HighZ)CompensationOFFVDD=VµACurrentconsumption()IDDVDD=VCurrentconsumption()IDDfSCL=Hz,INT=VDDFOE=GNDFOUT:outputOFF(HighZ)CompensationON(peak)VDD=VµAFOEpin×VDDVDDHighlevelinputvoltageVIHSCLandSDApins×VDDVFOEpinGND−×VDDLowlevelinputvoltageVILSCLandSDApinsGND−×VDDVVOHVDD=V,IOH=−mAVOHVDD=V,IOH=−mAHighleveloutputvoltageVOHFOUTpinVDD=V,IOH=−µAVVOLVDD=V,IOL=mAGNDGNDVOLVDD=V,IOL=mAGNDGNDVOLFOUTpinVDD=V,IOL=µAGNDGNDVVOLVDD=V,IOL=mAGNDGNDVOLINTpinVDD=V,IOL=mAGNDGNDVLowleveloutputvoltageVOLSDApinVDD≥V,IOL=mAGNDGNDVInputleakagecurrentILKFOE,SCL,SDApins,VIN=VDDorGND−µAOutputleakagecurrentIOZINT,SDA,FOUTpins,VOUT=VDDorGND−µARX–TPageETMEACCharacteristics*Unlessotherwisespecified,GND=V,VDD=VtoV,Ta=−°Cto°CItemSymbolConditionMinTypMaxUnitSCLclockfrequencyfSCLkHzStartconditionsetuptimetSUSTAµsStartconditionholdtimetHDSTAµsDatasetuptimetSUDATnsDataholdtimetHDDATnsStopconditionsetuptimetSUSTOµsBusidletimebetweenstartconditionandstopconditiontBUFµsTimewhenSCL="L"tLOWµsTimewhenSCL="H"tHIGHµsRisetimeforSCLandSDAtrµsFalltimeforSCLandSDAtfµsAllowablespiketimeonbustSPnsFOUTdutytWtofVDDlevelTimingcharttHDDATtSUDATtHDSTAtLOWtHIGHfSCLtrtftSUSTASDASCLSTARTCONDITION(S)BITMSB(A)BIT(A)ACK(A)ProtocoltBUFtSUSTOSTOPCONDITION(P)STARTCONDITION(S)(P)(A)tHDSTAtSUSTA(S)BITLSB(RW)(S)tSPCaution:Whenaccessingthisdevice,allcommunicationfromtransmittingthestartconditiontotransmittingthestopconditionafteraccessshouldbecompletedwithinsecondsIfsuchcommunicationrequiressecondsorlonger,theICbusinterfaceisresetbytheinternalbustimeoutfunctionDatawriting:It’snecessarytoinputthedataofbitunitsDuringinputtingthedataofbitunits,astateofsuspensionoccurs,thedataarenotwrittenappropriatelyRX–TPageETMEUseMethodsOverviewofFunctions)ClockfunctionsThisfunctionisusedtosetandreadoutmonth,day,hour,date,minute,second,andyear(lasttwodigits)dataAny(twodigit)yearthatisamultipleofistreatedasaleapyearandcalculatedautomaticallyassuchuntiltheyear)FixedcycleinterruptgenerationfunctionThefixedcycletimerinterruptgenerationfunctiongeneratesaninterrupteventperiodicallyatanyfixedcyclesetbetweenµsandminutesWhenaninterrupteventisgenerated,theINTpingoestolowlevel("L")and""issettotheTFbittoreportthataneventhasoccurred(However,whenafixedcycletimerinterrupteventhasbeengenerated,lowleveloutputfromtheINTpinoccursonlywhenthevalueofthecontrolregister'sTIEbitis""Uptomsaftertheinterruptoccurs,theINTstatusisautomaticallycleared(INTstatuschangesfromlowleveltoHiZ))TimeupdateinterruptfunctionThetimeupdateinterruptfunctiongeneratesinterrupteventsatonesecondoroneminuteintervals,accordingtothetimingoftheinternalclockWhenaninterrupteventoccurs,theUFbitvaluebecomes""andtheINTpingoestolowleveltoindicatethataneventhasoccurred(However,whenafixedcycletimerinterrupteventhasbeengenerated,lowleveloutputfromtheINTpinoccursonlywhenthevalueofthecontrolregister'sUIEbitis""ThisINTstatusisautomaticallycleared(INTstatuschangesfromlowleveltoHiZ)msorms(afixedvalue)aftertheinterruptoccurs)AlarminterruptfunctionThealarminterruptgenerationfunctiongeneratesinterrupteventsforalarmsettingssuchasdate,day,hour,andminutesettingsWhenaninterrupteventoccurs,theAFbitvalueissetto""andtheINTpingoestolowleveltoindicatethataneventhasoccurred)kHzclockoutputThekHzclock(withprecisionequaltothatofthebuiltincrystaloscillator)canbeoutputviatheFOUTpinTheFOUTpinisaCMOSoutputpinwhichcanbesetforclockoutputwhentheFOEpinisathighlevelandforlowleveloutputwhentheFOEpinisathighimpedance)InterfacewithCPUDataisreadandwrittenviatheICbusinterfaceusingtwosignallines:SCL(clock)andSDA(data)SinceneitherSCLnorSDAincludesaprotectivediodeontheVDDside,adatainterfacebetweenhostswithdifferingsupplyvoltagescanstillbeimplementedbyaddingpullupresistorstothecircuitboardTheSCL'smaximumclockfrequencyiskHz(whenVDD≥V),whichsupportstheICbus'shighspeedmodeRX–TPageETMEDescriptionofRegistersRegistertableAddressFunctionbitbitbitbitbitbitbitbitRemarkSEC!∗MIN!∗HOUR!!∗WEEK!∗DAY!!∗MONTH!!!∗YEAR−RAM••••••••∗MINAlarmAE−HOURAlarmAE•∗WEEKAlarmADAYAlarmAE•∗BTimerCounter−CTimerCounter••••∗DExtensionRegisterTESTWADAUSELTEFSELFSELTSELTSEL∗,∗,∗EFlagRegister!!UFTFAF!VLFVDET∗,∗,∗FControlRegisterCSELCSELUIETIEAIE!!RESET∗NoteWhenaftertheinitialpoweruporwhentheresultofreadouttheVLFbitis"",initializeallregisters,beforeusingthemoduleBesuretoavoidenteringincorrectdateandtimedata,asclockoperationsarenotguaranteedwhenthedataortimedataisincorrect∗)Duringtheinitialpowerup,theTESTbitisresetto""andtheVLFbitissetto""∗Atthispoint,allotherregistervaluesareundefined,sobesuretoperformaresetbeforeusingthemodule∗)Onlya""canbewrittentotheUF,TF,AF,VLF,orVDETbit∗)Anybitmarkedwith"!"shouldbeusedwithavalueof""afterinitialization∗)Anybitmarkedwith"•"isaRAMbitthatcanbeusedtoreadorwriteanydata∗)TheTESTbitisusedbythemanufacturerfortestingBesuretoset""forthisbitwhenwritingRX–TPageETMEControlregister(RegF)AddressFunctionbitbitbitbitbitbitbitbitControlRegisterCSELCSELUIETIEAIE!!RESETF(Default)()()(−)(−)(−)()()(−)∗)Thedefaultvalueisthevaluethatisread(orissetinternally)afterpoweringupfromV∗)"o"indicateswriteprotectedbitsAzeroisalwaysreadfromthesebits∗)"−"i

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