12354SCLGNDSDAWPVCC12348765A0A1A2GNDVCCWPSCLSDA12348765VCCWPSCLSDAA0A1A2GNDVCCWPSCLSDAA0A1A2GND1234876512348765A0A1A2GNDVCCWPSCLSDA12348765A0A1A2GNDVCCWPSCLSDA8-leadSOIC8-balldBGA28-leadUltraThinMini-MAP(MLP2x3)8-leadPDIP5-leadSOT23BottomViewBottomView8-leadTSSOPFeatures•Low-voltageandStandard-voltageOperation–1.8(VCC=1.8Vto5.5V)�InternallyOrganized128x8(1K)�Two-wireSerialInterface�SchmittTrigger,FilteredInputsforNoiseSuppression�BidirectionalDataTransferProtocol�1MHz(5V),400kHz(1.8V,2.5V,2.7V)Compatibility�WriteProtectPinforHardwareDataProtection�8-bytePage(1K)WriteModes�PartialPageWritesAllowed�Self-timedWriteCycle(5msmax)�High-reliability–Endurance:1MillionWriteCycles–DataRetention:100Years�8-leadPDIP,8-leadJEDECSOIC,8-leadUltraThinMini-MAP(MLP2x3),5-leadSOT23,8-leadTSSOPand8-balldBGA2Packages�Lead-free/Halogen-free�DieSales:WaferFormandTapeandReelDescriptionTheAT24C01Bprovides1024bitsofserialelectricallyerasableandprogrammableread-onlymemory(EEPROM)organizedas128wordsof8bitseach.Thedeviceisoptimizedforuseinmanyindustrialandcommercialapplicationswherelow-powerandlow-voltageoperationareessential.TheAT24C01Bisavailableinspace-saving8-leadPDIP,8-leadJEDECSOIC,8-leadUltraThinMini-MAP(MLP2x3),5-leadSOT23,8-leadTSSOP,and8-balldBGA2packagesandisaccessedviaaTwo-wireserialinterface.Inaddition,theAT24C01Bisavailablein1.8V(1.8Vto5.5V)version.Table0-1.PinConfigurationPinNameFunctionA0-A2AddressInputsSDASerialDataSCLSerialClockInputWPWriteProtectGNDGroundVCCPowerSupplyTwo-wireSerialEEPROM1K(128x8)AT24C01B5156E–SEEPR–10/0825156E–SEEPR–10/08AT24C01BFigure0-1.BlockDiagramAbsoluteMaximumRatingsOperatingTemperature..................................–55°Cto+125°C*NOTICE:Stressesbeyondthoselistedunder“AbsoluteMaximumRatings”maycausepermanentdam-agetothedevice.Thisisastressratingonlyandfunctionaloperationofthedeviceattheseoranyotherconditionsbeyondthoseindicatedintheoperationalsectionsofthisspecificationisnotimplied.Exposuretoabsolutemaximumratingconditionsforextendedperiodsmayaffectdevicereliability.StorageTemperature.....................................–65°Cto+150°CVoltageonAnyPinwithRespecttoGround....................................–1.0Vto+7.0VMaximumOperatingVoltage..........................................6.25VDCOutputCurrent........................................................5.0mASTARTSTOPLOGICVCCGNDWPSCLSDAA2A1A0SERIALCONTROLLOGICENH.V.PUMP/TIMINGEEPROMDATARECOVERYSERIALMUXXDECDOUT/ACKLOGICCOMPLOADINCDATAWORDADDR/COUNTERYDECR/WDOUTDINLOADDEVICEADDRESSCOMPARATOR35156E–SEEPR–10/08AT24C01B1.PinDescriptionSERIALCLOCK(SCL):TheSCLinputisusedtopositiveedgeclockdataintoeachEEPROMdeviceandnegativeedgeclockdataoutofeachdevice.SERIALDATA(SDA):TheSDApinisbidirectionalforserialdatatransfer.Thispinisopen-draindrivenandmaybewire-ORedwithanynumberofotheropen-drainoropen-collectordevices.DEVICE/PAGEADDRESSES(A2,A1,A0):TheA2,A1andA0pinsaredeviceaddressinputsthatarehardwiredfortheAT24C01B.Asmanyaseight1Kdevicesmaybeaddressedonasin-glebussystem(deviceaddressingisdiscussedindetailundertheDeviceAddressingsection).WRITEPROTECT(WP):TheAT24C01Bhasawriteprotectpinthatprovideshardwaredataprotection.Thewriteprotectpinallowsnormalread/writeoperationswhenconnectedtoground(GND).WhenthewriteprotectpinisconnectedtoVCC,thewriteprotectionfeatureisenabledandoperatesasshowninTable1-1.Table1-1.WriteProtect2.MemoryOrganizationAT24C01B,1KSERIALEEPROM:Internallyorganizedwith16pagesof8byteseach,the1Krequiresan7-bitdatawordaddressforrandomwordaddressing.(SeeFigure8-2onpage10)WPPinStatusPartoftheArrayProtected24C01BAtVCCFull(1K)ArrayAtGNDNormalRead/WriteOperations45156E–SEEPR–10/08AT24C01BNote:1.Thisparameterischaracterizedandisnot100%tested.Note:1.VILminandVIHmaxarereferenceonlyandarenottested.Table2-1.PinCapacitance(1)ApplicableoverrecommendedoperatingrangefromTA=25°C,f=1.0MHz,VCC=+1.8VSymbolTestConditionMaxUnitsConditionsCI/OInput/OutputCapacitance(SDA)8pFVI/O=0VCINInputCapacitance(A0,A1,A2,SCL)6pFVIN=0VTable2-2.DCCharacteristicsApplicableoverrecommendedoperatingrangefrom:TAI=–40°Cto+85°C,VCC=+1.8Vto+5.5V,VCC=+1.8Vto+5.5V(unlessotherwisenoted)SymbolParameterTestConditionMinTypMaxUnitsVCC1SupplyVoltage1.85.5VVCC2SupplyVoltage2.55.5VVCC3SupplyVoltage2.75.5VVCC4SupplyVoltage4.55.5VICCSupplyCurrentVCC=5.0VREADat100kHz0.41.0mAICCSupplyCurrentVCC=5.0VWRITEat100kHz2.03.0mAISB1StandbyCurrentVCC=1.8VVIN=VCCorVSS0.63.0µAISB2StandbyCurrentVCC=2.5VVIN=VCCorVSS1.44.0µAISB3StandbyCurrentVCC=2.7VVIN=VCCorVSS1.64.0µAISB4StandbyCurrentVCC=5.0VVIN=VCCorVSS8.018.0µAILIInputLeakageCurrentVIN=VCCorVSS0.103.0µAILOOutputLeakageCurrentVOUT=VCCorVSS0.053.0µAVILInputLowLevel(1)–0.6VCCx0.3VVIHInputHighLevel(1)VCCx0.7VCC+0.5VVOL2OutputLowLevelVCC=3.0VIOL=2.1mA0.4VVOL1OutputLowLevelVCC=1.8VIOL=0.15mA0.2V55156E–SEEPR–10/08AT24C01BNote:1.Thisparameterisensuredbycharacterizationonly.Table2-3.ACCharacteristicsApplicableoverrecommendedoperatingrangefromTAI=–40°Cto+85°C,VCC=+1.8Vto+5.5V,CL=1TTLGateand100pF(unlessotherwisenoted)SymbolParameter1.8,2.5,2.75.0-voltUnitsMinMaxMinMaxfSCLClockFr