AT24C512

1Features•Low-voltageandStandard-voltageOperation–2.7(VCC=2.7Vto5.5V)–1.8(VCC=1.8Vto3.6V)InternallyOrganized65,536x82-wireSerialInterfaceSchmittTriggers,FilteredInputsforNoiseSuppressionBidirectionalDataTransferProtocol1MHz(5V),400kHz(2.7V)and100kHz(1.8V)CompatibilityWriteProtectPinforHardwareandSoftwareDataProtection128-bytePageWriteMode(PartialPageWritesAllowed)Self-timedWriteCycle(5msMax)HighReliability–Endurance:100,000WriteCycles–DataRetention:40YearsAutomotiveGradeandExtendedTemperatureDevicesAvailable8-leadPDIP,8-leadEIAJSOIC,8-leadJEDECSOIC,8-leadTSSOP,8-leadLAPand8-balldBGATMPackagesDescriptionTheAT24C512provides524,288bitsofserialelectricallyerasableandprogrammablereadonlymemory(EEPROM)organizedas65,536wordsof8bitseach.Thedevice’scascadablefeatureallowsupto4devicestoshareacommon2-wirebus.Thedeviceisoptimizedforuseinmanyindustrialandcommercialapplicationswherelow-powerandlow-voltageoperationareessential.Thedevicesareavailableinspace-saving8-pinPDIP,8-leadEIAJSOIC,8-leadJEDECSOIC,8-leadTSSOP,8-leadLeadlessArray(LAP)and8-balldBGApackages.Inaddition,theentirefamilyisavailablein2.7V(2.7Vto5.5V)and1.8V(1.8Vto3.6V)versions.Rev.1116J–SEEPR–7/032-wireSerialEEPROM512K(65,536x8)AT24C512PinConfigurationsPinNameFunctionA0-A1AddressInputsSDASerialDataSCLSerialClockInputWPWriteProtectNCNoConnect8-leadPDIP12348765A0A1NCGNDVCCWPSCLSDA8-leadLeadlessArrayBottomView12348765VCCWPSCLSDAA0A1NCGND8-leadTSSOP12348765A0A1NCGNDVCCWPSCLSDA8-balldBGABottomViewVCCWPSCLSDAA0A1NCGND123487658-leadSOIC12348765A0A1NCGNDVCCWPSCLSDA2AT24C5121116J–SEEPR–7/03BlockDiagramAbsoluteMaximumRatings*OperatingTemperature..................................-55°Cto+125°C*NOTICE:Stressesbeyondthoselistedunder“AbsoluteMaximumRatings”maycausepermanentdam-agetothedevice.Thisisastressratingonlyandfunctionaloperationofthedeviceattheseoranyotherconditionsbeyondthoseindicatedintheoperationalsectionsofthisspecificationisnotimplied.Exposuretoabsolutemaximumratingconditionsforextendedperiodsmayaffectdevicereliability.StorageTemperature.....................................-65°Cto+150°CVoltageonAnyPinwithRespecttoGround.....................................-1.0Vto+7.0VMaximumOperatingVoltage..........................................6.25VDCOutputCurrent........................................................5.0mA3AT24C5121116J–SEEPR–7/03PinDescriptionSERIALCLOCK(SCL):TheSCLinputisusedtopositiveedgeclockdataintoeachEEPROMdeviceandnegativeedgeclockdataoutofeachdevice.SERIALDATA(SDA):TheSDApinisbidirectionalforserialdatatransfer.Thispinisopen-draindrivenandmaybewire-ORedwithanynumberofotheropen-drainoropencollectordevices.DEVICE/PAGEADDRESSES(A1,A0):TheA1andA0pinsaredeviceaddressinputsthatarehardwiredorleftnotconnectedforhardwarecompatibilitywithAT24C128/256.Whenthepinsarehardwired,asmanyasfour512Kdevicesmaybeaddressedonasinglebussystem(deviceaddressingisdiscussedindetailundertheDeviceAddress-ingsection).Whenthepinsarenothardwired,thedefaultA1andA0arezero.WRITEPROTECT(WP):Thewriteprotectinput,whentiedtoGND,allowsnormalwriteoperations.WhenWPistiedhightoVCC,allwriteoperationstothememoryareinhib-ited.Ifleftunconnected,WPisinternallypulleddowntoGND.SwitchingWPtoVCCpriortoawriteoperationcreatesasoftwarewriteprotectfunction.MemoryOrganizationAT24C512,512KSERIALEEPROM:The512Kisinternallyorganizedas512pagesof128-byteseach.Randomwordaddressingrequiresa16-bitdatawordaddress.4AT24C5121116J–SEEPR–7/03Note:1.Thisparameterischaracterizedandisnot100%tested.Note:1.VILminandVIHmaxarereferenceonlyandarenottested.PinCapacitance(1)ApplicableoverrecommendedoperatingrangefromTA=25°C,f=1.0MHz,VCC=+1.8V.SymbolTestConditionMaxUnitsConditionsCI/OInput/OutputCapacitance(SDA)8pFVI/O=0VCINInputCapacitance(A0,A1,SCL)6pFVIN=0VDCCharacteristicsApplicableoverrecommendedoperatingrangefrom:TAI=-40°Cto+85°C,VCC=+1.8Vto+5.5V,TAC=0°Cto+70°C,VCC=+1.8Vto+5.5V(unlessotherwisenoted).SymbolParameterTestConditionMinTypMaxUnitsVCC1SupplyVoltage1.83.6VVCC2SupplyVoltage2.75.5VVCC3SupplyVoltage4.55.5VICC1SupplyCurrentVCC=5.0VREADat400kHz1.02.0mAICC2SupplyCurrentVCC=5.0VWRITEat400kHz2.03.0mAISB1StandbyCurrent(1.8Voption)VCC=1.8VVIN=VCCorVSS1.0µAVCC=3.6V3.0ISB2StandbyCurrent(2.7Voption)VCC=2.7VVIN=VCCorVSS2.0µAVCC=5.5V6.0ISB3StandbyCurrent(5.0Voption)VCC=4.5-5.5VVIN=VCCorVSS6.0µAILIInputLeakageCurrentVIN=VCCorVSS0.103.0µAILOOutputLeakageCurrentVOUT=VCCorVSS0.053.0µAVILInputLowLevel(1)-0.6VCCx0.3VVIHInputHighLevel(1)VCCx0.7VCC+0.5VVOL2OutputLowLevelVCC=3.0VIOL=2.1mA0.4VVOL1OutputLowLevelVCC=1.8VIOL=0.15mA0.2V5AT24C5121116J–SEEPR–7/03Notes:1.Thisparameterischaracterizedandisnot100%tested.2.ACmeasurementconditions:RL(connectstoVCC):1.3kΩ(2.7V,5V),10kΩ(1.8V)Inputpulsevoltages:0.3VCCto0.7VCCInputriseandfalltimes:≤50nsInputandoutputtimingreferencevoltages:0.5VCC3.TheWriteCycleTimeof5msonlyappliestotheAT24C512devicesbearingtheprocessletter“A”onthepackage(themarkislocatedinthelowerrightcorneronthetopsideofthepackage).ACCharacteristicsApplicableoverrecommendedoperatingrangefromTA=-40°Cto+85°C,VCC=+1.8Vto+5.5V,CL