AT49LV2048A资料

Features

•Single-voltageRead/WriteOperation:2.7Vto3.6V(BV),3.0Vto3.6V(LV)•FastReadAccessTime–70ns•InternalErase/ProgramControl•

SectorArchitecture

–One8KWord(16KBytes)BootBlockwithProgrammingLockout–Two4KWord(8KBytes)ParameterBlocks

–One112KWord(224KBytes)MainMemoryArrayBlock•FastSectorEraseTime–10Seconds

•Byte-by-byteorWord-by-wordProgramming–30µsTypical•HardwareDataProtection

•DataPollingforEndofProgramDetection•LowPowerDissipation–25mAActiveCurrent

–50µACMOSStandbyCurrent•

Typical10,000WriteCycles

Description

TheAT49BV/LV2048Aisa3-volt,2-megabitFlashmemoryorganizedas262,144wordsof8bitseachor128Kwordsof16bitseach.ManufacturedwithAtmel’sadvancednonvolatileCMOStechnology,thedeviceoffersaccesstimesto70nswithpowerdissipationofjust67mWat2.7Vread.Whendeselected,theCMOSstandbycurrentislessthan50µA.

Thedevicecontainsauser-enabled“bootblock”protectionfeature.TheAT49BV/LV2048Alocatesthebootblockatlowestorderaddresses(“bottomboot”).Toallowforsimplein-systemreprogrammability,theAT49BV/LV2048Adoesnotrequirehighinputvoltagesforprogramming.ReadingdataoutofthedeviceissimilartoreadingfromanEPROM;ithasstandardCE,OEandWEinputstoavoidbuscon-tention.ReprogrammingtheAT49BV/LV2048Aisperformedbyfirsterasingablockofdataandthenprogrammingonabyte-by-byteorword-by-wordbasis.

PinConfigurations

PinNameFunctionA0-A16AddressesCEChipEnableOEOutputEnableWEWriteEnableRESETResetVPPVPPcanbeleftunconnectedorconnectedtoVCC,GND,5Vor12V.Theinputhasnoeffectontheoperationofthedevice.I/O0-I/O15DataInputs/OutputsI/O15(A-1)I/O15(DataInput/Output,WordMode)A-1(LSBAddressInput,ByteMode)BYTESelectsByteorWordModeNCNoConnect2-megabit(256Kx8/128Kx16)Single2.7-voltBattery-Voltage™FlashMemoryAT49BV2048AAT49LV2048ARev.1914D–FLASH–03/021

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AT49BV/LV2048ASOIC(SOP)

AT49BV/LV2048ATSOPTopView

Type1

A15A14A13A12A11A10A9A8NCNCWERESETVPPNCNCNCNCA7A6A5A4A3A2A1123456789101112131415161718192021222324484746454443424140393837363534333231302928272625A16BYTEGNDI/O15/A-1I/O7I/O14I/O6I/O13I/O5I/O12I/O4VCCI/O11I/O3I/O10I/O2I/O9I/O1I/O8I/O0OEGNDCEA0VPPNCNCA7A6A5A4A3A2A1A0CEGNDOEI/O0I/O8I/O1I/O9I/O2I/O10I/O3I/O111234567891011121314151617181920212244434241403938373635343332313029282726252423RESETWEA8A9A10A11A12A13A14A15A16BYTEGNDI/O15/A-1I/O7I/O14I/O6I/O13I/O5I/O12I/O4VCCNote:“•”denotesawhitedotonthepackage.

ThedeviceiserasedbyexecutingtheErasecommandsequence;thedeviceinternallycon-trolstheeraseoperation.Thememoryisdividedintofourblocksforeraseoperations.Therearetwo4Kwordparameterblocksections,thebootblock,andthemainmemoryarrayblock.Thetypicalnumberofprogramanderasecyclesisinexcessof10,000cycles.

The8Kwordbootblocksectionincludesareprogramminglockoutfeaturetoprovidedataintegrity.Thisfeatureisenabledbyacommandsequence.Oncethebootblockprogramminglockoutfeatureisenabled,thedatainthebootblockcannotbechangedwheninputlevelsof5.5voltsorlessareused.Thebootsectorisdesignedtocontainusersecurecode.TheBYTEpincontrolswhetherthedevicedataI/Opinsoperateinthebyteorwordconfigura-tion.IftheBYTEpinissetatalogic“1”orleftopen,thedeviceisinwordconfiguration,I/O0-I/O15areactiveandcontrolledbyCEandOE.IftheBYTEpinissetatlogic“0”,thedeviceisinbyteconfiguration,andonlydataI/OpinsI/O0-I/O7areactiveandcontrolledbyCEandOE.ThedataI/OpinsI/O8-I/O14aretri-statedandtheI/O15pinisusedasaninputfortheLSB(A-1)addressfunction.

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AT49BV/LV2048A

AT49BV/LV2048ABlockDiagram

VCCGNDOEWECERESETADDRESSINPUTSCONTROLLOGICDATA INPUTS/OUTPUTSI/O0 - I/O15INPUT/OUTPUTBUFFERSPROGRAM DATALATCHESY-GATINGMAIN MEMORY(112K WORDS)PARAMETERBLOCK 24K WORDSPARAMETERBLOCK 14K WORDSBOOT BLOCK8K WORDSY DECODERX DECODER1FFFF0400003FFF0300002FFF0200001FFF00000DeviceOperation

READ:TheAT49BV/LV2048AisaccessedlikeanEPROM.WhenCEandOEarelowandWEishigh,thedatastoredatthememorylocationdeterminedbytheaddresspinsisassertedontheoutputs.Theoutputsareputinthehigh-impedancestatewheneverCEorOEishigh.Thisdual-linecontrolgivesdesignersflexibilityinpreventingbuscontention.

COMMANDSEQUENCES:Whenthedeviceisfirstpoweredonitwillberesettothereadorstandbymode,dependinguponthestateofthecontrollineinputs.Inordertoperformotherdevicefunctions,aseriesofcommandsequencesareenteredintothedevice.ThecommandsequencesareshownintheCommandDefinitionstable(I/O8-I/O15aredon’tcareinputsforthecommandcodes).ThecommandsequencesarewrittenbyapplyingalowpulseontheWEorCEinputwithCEorWElow(respectively)andOEhigh.TheaddressislatchedonthefallingedgeofCEorWE,whicheveroccurslast.ThedataislatchedbythefirstrisingedgeofCEorWE.Standardmicroprocessorwritetimingsareused.Theaddresslocationsusedinthecommandsequencesarenotaffectedbyenteringthecommandsequences.

RESET:ARESETinputpinisprovidedtoeasesomesystemapplications.WhenRESETisatalogichighlevel,thedeviceisinitsstandardoperatingmode.AlowlevelontheRESETinputhaltsthepresentdeviceoperationandputstheoutputsofthedeviceinahigh-impedancestate.WhenahighlevelisreassertedontheRESETpin,thedevicereturnstothereadorstandbymode,dependinguponthestateofthecontrolinputs.Byapplyinga12V±0.5VinputsignaltotheRESETpinthebootblockarraycanbereprogrammedevenifthebootblockprogramlockoutfeaturehasbeenenabled(see“BootBlockProgrammingLockoutOverride”section).

ERASURE:Beforeabyteorwordcanbereprogrammed,itmustbeerased.Theerasedstateofmemorybitsisalogic“1”.TheentiredevicecanbeerasedbyusingtheChipErasecom-mandorindividualsectorscanbeerasedbyusingtheSectorErasecommands.

CHIPERASE:Theentiredevicecanbeerasedatonetimebyusingthe6-bytechiperasesoftwarecode.Afterthechiperasehasbeeninitiated,thedevicewillinternallytimetheeraseoperationsothatnoexternalclocksarerequired.ThemaximumtimetoerasethechipistEC.Ifthebootblocklockouthasbeenenabled,thechiperasewillnoterasethedatainthebootblock;itwillerasethemainmemoryblockandtheparameterblocksonly.Afterthechiperase,thedevicewillreturntothereadorstandbymode.

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SECTORERASE:Asanalternativetoafullchiperase,thedeviceisorganizedintofoursec-torsthatcanbeindividuallyerased.Therearetwo4Kwordparameterblocksections,onebootblock,andthemainmemoryarrayblock.TheSectorErasecommandisasix-buscycleoperation.ThesectoraddressislatchedonthefallingWEedgeofthesixthcyclewhilethe30HdatainputcommandislatchedattherisingedgeofWE.ThesectorerasestartsaftertherisingedgeofWEofthesixthcycle.Theeraseoperationisinternallycontrolled;itwillauto-maticallytimetocompletion.Wheneverthemainmemoryblockiserasedandreprogrammed,thetwoparameterblocksshouldbeerasedandreprogrammedbeforethemainmemoryblockiserasedagain.Wheneveraparameterblockiserasedandreprogrammed,theotherparam-eterblockshouldbeerasedandreprogrammedbeforethefirstparameterblockiserasedagain.Wheneverthebootblockiserasedandreprogrammed,themainmemoryblockandtheparameterblocksshouldbeerasedandreprogrammedbeforethebootblockiserasedagain.BYTE/WORDPROGRAMMING:Onceamemoryblockiserased,itisprogrammed(toalogic“0”)onabyte-by-byteorword-by-wordbasis.Programmingisaccomplishedviatheinternaldevicecommandregisterandisafour-buscycleoperation.Thedevicewillautomaticallygen-eratetherequiredinternalprogrampulses.

Anycommandswrittentothechipduringtheembeddedprogrammingcyclewillbeignored.Ifahardwareresethappensduringprogramming,thedataatthelocationbeingprogrammedwillbecorrupted.Pleasenotethatadata“0”cannotbeprogrammedbacktoa“1”;onlyeraseoperationscanconvert“0”sto“1”s.ProgrammingiscompletedafterthespecifiedtBPcycletime.TheDataPollingfeaturemayalsobeusedtoindicatetheendofaprogramcycle.BOOTBLOCKPROGRAMMINGLOCKOUT:Thedevicehasonedesignatedblockthathasaprogramminglockoutfeature.Thisfeaturepreventsprogrammingofdatainthedesignatedblockoncethefeaturehasbeenenabled.Thesizeoftheblockis8Kwords.Thisblock,referredtoasthebootblock,cancontainsecurecodethatisusedtobringupthesystem.Enablingthelockoutfeaturewillallowthebootcodetostayinthedevicewhiledataintherestofthedeviceisupdated.Thisfeaturedoesnothavetobeactivated;thebootblock’susageasawrite-protectedregionisoptionaltotheuser.Theaddressrangeofthebootblockis00000Hto01FFFH.

Oncethefeatureisenabled,thedatainthebootblockcannolongerbeerasedorpro-grammedwheninputlevelsof5.5Vorlessareused.Datainthemainmemoryblockcanstillbechangedthroughtheregularprogrammingmethod.Toactivatethelockoutfeature,aseriesofsixprogramcommandstospecificaddresseswithspecificdatamustbeperformed.PleaserefertotheCommandDefinitionstable.

BOOTBLOCKLOCKOUTDETECTION:Asoftwaremethodisavailabletodetermineifpro-grammingofthebootblocksectionislockedout.Whenthedeviceisinthesoftwareproductidentificationmode(seeSoftwareProductIdentificationEntryandExitsections)areadfromthefollowingaddresslocationwillshowifprogrammingthebootblockislockedout–00002H.IfthedataonI/O0islow,thebootblockcanbeprogrammed;ifthedataonI/O0ishigh,theprogramlockoutfeaturehasbeenenabledandtheblockcannotbeprogrammed.Thesoft-wareproductidentificationexitcodeshouldbeusedtoreturntostandardoperation.

BOOTBLOCKPROGRAMMINGLOCKOUTOVERRIDE:TheusercanoverridethebootblockprogramminglockoutbytakingtheRESETpinto12voltsduringtheentirechiperase,sectoreraseorwordprogrammingoperation.WhentheRESETpinisbroughtbacktoTTLlevelsthebootblockprogramminglockoutfeatureisagainactive.

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AT49BV/LV2048A

PRODUCTIDENTIFICATION:Theproductidentificationmodeidentifiesthedeviceandman-ufacturerasAtmel.Itmaybeaccessedbyhardwareorsoftwareoperation.ThehardwareoperationmodecanbeusedbyanexternalprogrammertoidentifythecorrectprogrammingalgorithmfortheAtmelproduct.

Fordetails,see“OperatingModes”(forhardwareoperation)or“SoftwareProductIdentifica-tionEntry/Exit”onpage13.Themanufactureranddevicecodesarethesameforbothmodes.DATAPOLLING:TheAT49BV/LV2048AfeaturesDataPollingtoindicatetheendofapro-gramcycle.DuringaprogramcycleanattemptedreadofthelastbyteloadedwillresultinthecomplementoftheloadeddataonI/O7.Oncetheprogramcyclehasbeencompleted,truedataisvalidonalloutputsandthenextcyclemaybegin.Duringachiporsectoreraseopera-tion,anattempttoreadthedevicewillgivea“0”onI/O7.Oncetheprogramorerasecyclehascompleted,truedatawillbereadfromthedevice.DataPollingmaybeginatanytimeduringtheprogramcycle.

TOGGLEBIT:InadditiontoDataPolling,theAT49BV/LV2048Aprovidesanothermethodfordeterminingtheendofaprogramorerasecycle.Duringaprogramoreraseoperation,suc-cessiveattemptstoreaddatafromthedevicewillresultinI/O6togglingbetweenoneandzero.Oncetheprogramcyclehascompleted,I/O6willstoptogglingandvaliddatawillberead.Examiningthetogglebitmaybeginatanytimeduringaprogramcycle.

HARDWAREDATAPROTECTION:HardwarefeaturesprotectagainstinadvertentprogramstotheAT49BV/LV2048Ainthefollowingways:(a)VCCsense:ifVCCisbelow1.8V(typical),theprogramfunctionisinhibited.(b)VCCpowerondelay:onceVCChasreachedtheVCCsenselevel,thedevicewillautomaticallytimeout10ms(typical)beforeprogramming.(c)Pro-graminhibit:holdinganyoneofOElow,CEhighorWEhighinhibitsprogramcycles.(d)Noisefilter:pulsesoflessthan15ns(typical)ontheWEorCEinputswillnotinitiateaprogramcycle.

INPUTLEVELS:Whileoperatingwitha2.7Vto3.6Vpowersupply,theaddressandcontrolinputs(OE,CEandWE)maybedrivenfrom0to5.5Vwithoutadverselyaffectingtheopera-tionofthedevice.TheI/Olinescanonlybedrivenfrom0toVCC+0.6V.

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CommandDefinition(inHex)(1)

CommandSequenceReadChipEraseSectorEraseByte/WordProgramBootBlockLockout(2)ProductIDEntryProductIDExit(3)ProductIDExit(3)Notes:

BusCycles166463311stBusCycleAddrAddr555555555555555555555555xxxxDataDOUTAAAAAAAAAAAAF02AAA2AAA2AAA2AAA2AAA2AAA5555555555555555555555555555555555558080A08090F055555555Addr5555AAAADINAA2AAA555555402AAA2AAA55555555SA(4)10302ndBusCycleAddrData3rdBusCycleAddrData4thBusCycleAddrData5thBusCycleAddrData6thBusCycleAddrData1.TheDATAFORMATineachbuscycleisasfollows:I/O15-I/O8(Don’tCare);I/O7-I/O0(Hex).

TheADDRESSFORMATineachbuscycleisasfollows:A15-A0(Hex),A-1,andA15-A16(Don’tCare).2.Thebootsectorhastheaddressrange00000Hto01FFFH.3.EitheroneoftheProductIDExitcommandscanbeused.4.SA=sectoraddresses:(A16-A0)

SA=01XXXforBOOTBLOCK

SA=02XXXforPARAMETERBLOCK1SA=03XXXforPARAMETERBLOCK2SA=1FXXXforMAINMEMORYARRAY

AbsoluteMaximumRatings*

TemperatureunderBias................................-55°Cto+125°CStorageTemperature.....................................-65°Cto+150°CAllInputVoltages(includingNCPins)withRespecttoGround...................................-0.6Vto+6.25VAllOutputVoltageswithRespecttoGround.............................-0.6VtoVCC+0.6VVoltageonRESETwithRespecttoGround...................................-0.6Vto+13.5V*NOTICE:

Stressesbeyondthoselistedunder“AbsoluteMaximumRatings”maycausepermanentdam-agetothedevice.Thisisastressratingonlyandfunctionaloperationofthedeviceattheseoranyotherconditionsbeyondthoseindicatedintheoperationalsectionsofthisspecificationisnotimplied.Exposuretoabsolutemaximumratingconditionsforextendedperiodsmayaffectdevicereliability.

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AT49BV/LV2048A

DCandACOperatingRange

AT49LV2048A-70OperatingTemperature(Case)VCCPowerSupplyCom.Ind.0°C-70°CN/A3.0V-3.6VAT49BV2048A-900°C-70°C-40°C-85°C2.7V-3.6VAT49BV2048A-120°C-70°C-40°C-85°C2.7V-3.6VOperatingModes

ModeReadProgram/Erase(2)Standby/ProgramInhibitProgramInhibitCEVILVILVIHXXOutputDisableResetProductIdentificationHardwareVILVILVIHVIHA1-A16=VIL,A9=VH(3)A0=VILA1-A16=VIL,A9=VH(3)A0=VIHA0=VIL,A1-A16=VILA0=VIH,A1-A16=VILManufacturerCode(4)DeviceCode(4)ManufacturerCode(4)DeviceCode(4)XXOEVILVIHX(1)XVILVIHXWEVIHVILXVIHXXXRESETVIHVIHVIHVIHVIHVIHVILXHigh-ZHigh-ZAiAiAiXI/ODOUTDINHigh-ZSoftware(5)VIHNotes:1.2.3.4.

XcanbeVILorVIH.RefertoACprogrammingwaveforms.VH=12.0V±0.5V.ManufacturerCode:001FHDeviceCode:0082H

5.Seedetailsunder“SoftwareProductIdentificationEntry/Exit”onpage13.

DCCharacteristics

SymbolILIILOISB1ISB2ICC(1)VILVIHVOLVOHParameterInputLoadCurrentOutputLeakageCurrentVCCStandbyCurrentCMOSVCCStandbyCurrentTTLVCCActiveCurrentInputLowVoltageInputHighVoltageOutputLowVoltageOutputHighVoltageIOL=2.1mAIOH=-400µA2.42.00.45ConditionVIN=0VtoVCCVI/O=0VtoVCCCE=VCC-0.3VtoVCCCE=2.0VtoVCCf=5MHz;IOUT=0mAMinMax10.010.050.00.525.00.6UnitsµAµAµAmAmAVVVVNote:Intheerasemode,ICCis50mA.7

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ACReadCharacteristics

AT49LV2048A-70SymboltACCtCE(1)tOE(2)tDF(3)(4)tOHtROParameterAddresstoOutputDelayCEtoOutputDelayOEtoOutputDelayCEorOEtoOutputFloatOutputHoldfromOE,CEorAddress,whicheveroccurredfirstRESETtoOutputDelay000800MinMax70703525000800AT49BV2048A-90MinMax90904025000800AT49BV2048A-12MinMax1201205030UnitsnsnsnsnsnsnsACReadWaveforms(1)(2)(3)(4)

ADDRESSADDRESS VALIDCEtOECEtOEttACCtROHIGH ZOUTPUTVALIDtOHDFRESETOUTPUTNotes:

1.CEmaybedelayeduptotACC-tCEaftertheaddresstransitionwithoutimpactontACC.

2.OEmaybedelayeduptotCE-tOEafterthefallingedgeofCEwithoutimpactontCEorbytACC-tOEafteranaddresschange

withoutimpactontACC.

3.tDFisspecifiedfromOEorCE,whicheveroccursfirst(CL=5pF).4.Thisparameterischaracterizedandisnot100%tested.

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AT49BV/LV2048A

InputTestWaveformsandMeasurementLevel

2.4V0.4VtR,tF<5ns

OutputTestLoad

3.3V1.8KOUTPUTPIN1.3K100 pFPinCapacitance

f=1MHz,T=25°C(1)

SymbolCINCOUTTyp48Max612UnitspFpFConditionsVIN=0VVOUT=0VNote:Thisparameterischaracterizedandisnot100%tested.9

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ACWordLoadCharacteristics

SymboltAS,tOEStAHtCStCHtWPtDStDH,tOEHtWPHParameterAddress,OESetupTimeAddressHoldTimeChipSelectSetupTimeChipSelectHoldTimeWritePulseWidth(WEorCE)DataSetupTimeData,OEHoldTimeWritePulseWidthHighMin070007070050MaxUnitsnsnsnsnsnsnsnsnsACByte/WordLoadWaveforms

WEControlled

CEControlled

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AT49BV/LV2048A

ProgramCycleCharacteristics

SymboltBPtAStAHtDStDHtWPtWPHtECParameterByte/WordProgrammingTimeAddressSetupTimeAddressHoldTimeDataSetupTimeDataHoldTimeWritePulseWidthWritePulseWidthHighEraseCycleTime070700705010MinTyp30MaxUnitsµsnsnsnsnsnsnssecondsProgramCycleWaveforms

PROGRAM CYCLEOECEtWPWEtWPHtBPtASA0-A16tAH5555tDStDH2AAA5555ADDRESS5555DATAAA55A0INPUT DATAAASectororChipEraseCycleWaveforms

OE(1)CEtWPWEtASA0-A16tAH5555tDSDATAAAWORD 055WORD 180WORD 2AAWORD 355WORD 4Note 3WORD 5tDH2AAA555555552AAANote 2tECtWPHNotes:

1.OEmustbehighonlywhenWEandCEarebothlow.

2.Forchiperase,theaddressshouldbe5555.Forsectorerase,theaddressdependsonwhatsectoristobeerased.

(Seenote4underCommandDefinitions.)

3.Forchiperase,thedatashouldbe10H,andforsectorerase,thedatashouldbe30H.

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DataPollingCharacteristics(1)

SymboltDHtOEHtOEtWRNotes:

ParameterDataHoldTimeOEHoldTimeOEtoOutputDelay(2)WriteRecoveryTime1.Theseparametersarecharacterizedandnot100%tested.2.SeetOEspecin“ACReadCharacteristics”onpage8.

0Min1010TypMaxUnitsnsnsnsnsDataPollingWaveforms

WECEOEtDHI/O7A0-A16tOEHtOEAnHIGH ZAnAnAnAntWRToggleBitCharacteristics(1)

SymboltDHtOEHtOEtOEHPtWRNotes:ParameterDataHoldTimeOEHoldTimeOEtoOutputDelay(2)OEHighPulseWriteRecoveryTime1.Theseparametersarecharacterizedandnot100%tested.2.SeetOEspecin“ACReadCharacteristics”onpage8.

1500Min1010TypMaxUnitsnsnsnsnsnsToggleBitWaveforms(1)(2)(3)

WECEtOEHOEtDHI/O6tOEHIGH ZtWRtOEHPNotes:

1.TogglingeitherOEorCEorbothOEandCEwilloperatetogglebit.ThetOEHPspecificationmustbemetbythetoggling

input(s).

2.BeginningandendingstateofI/O6willvary.

3.Anyaddresslocationmaybeusedbuttheaddressshouldnotvary.

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AT49BV/LV2048A

(1)

SoftwareProductIdentificationEntry(1)BootBlockLockoutEnableAlgorithm

LOAD DATA AATOADDRESS 5555LOAD DATA 55TOADDRESS 2AAALOAD DATA 90TOADDRESS 5555ENTER PRODUCTIDENTIFICATIONMODE(2)(3)(5)SoftwareProductIdentificationExit(1)(6)

LOAD DATA AAORLOAD DATA F0TOTOADDRESS 5555ANY ADDRESSLOAD DATA 55EXIT PRODUCTTOIDENTIFICATIONADDRESS 2AAAMODE(4)LOAD DATA F0TOADDRESS 5555EXIT PRODUCTIDENTIFICATIONMODE(4)Notes:1.DataFormat:I/O15-I/O8(Don’tCare);I/O7-I/O0(Hex)

AddressFormat:A15-A0(Hex),A-1,andA15-A16(Don’tCare).

2.

A1-A16=VIL.

ManufacturerCodeisreadforA0=VIL;DeviceCodeisreadforA0=VIH.

3.Thedevicedoesnotremaininidentificationmodeifpowereddown.

4.Thedevicereturnstostandardoperationmode.5.ManufacturerCode:001FHDeviceCode:0082H

6.

EitheroneoftheProductIDExitcommandscanbeused.

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LOAD DATA AATOADDRESS 5555LOAD DATA 55TOADDRESS 2AAALOAD DATA 80TOADDRESS 5555LOAD DATA AATOADDRESS 5555LOAD DATA 55TOADDRESS 2AAALOAD DATA 40TOADDRESS 5555PAUSE 1 second(2)7.DataFormat:I/O15-I/O8(Don’tCare);I/O7-I/O0(Hex)

AddressFormat:A15-A0(Hex),A-1,andA15-A16(Don’tCare).

8.BootBlockLockoutfeatureenabled.

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OrderingInformation

tACC(ns)7090ICC(mA)Active2525Standby0.050.05OrderingCodeAT49LV2048A-70RCAT49LV2048A-70TCAT49BV2048A-90TCAT49BV2048A-90TI120250.05AT49BV2048A-12TCAT49BV2048A-12TIPackage44R48T48T48T48T48TOperationRangeCommercial(0°to70°C)Commercial(0°to70°C)Industrial(-40°to85°C)Commercial(0°to70°C)Industrial(-40°to85°C)PackageType44R48T44-lead,0.525\"Wide,PlasticGullWingSmallOutline(SOIC)48-lead,12x20mm,PlasticThinSmallOutlinePackage(TSOP)14

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AT49BV/LV2048A

PackagingInformation

44R–SOIC

Dimensions in Millimeters and (Inches). Controlling dimension: Inches. 0.508(0.020)0.356(0.014)13.46(0.530)13.21(0.520)16.18(0.637)15.82(0.623)PIN 11.27(0.050) BSC28.32(1.115)28.07(1.105)2.67(0.105)2.41(0.095)0.33(0.130)1.27(0.050)0º ~ 8º1.00(0.039)0.60(0.024)0.250(0.010)0.100(0.004)04/11/01 2325 Orchard Parkway San Jose, CA 95131TITLE44R, 44-lead (0.525\" Body) Plastic Gull Wing Small Outline (SOIC) DRAWING NO.44RREV. AR15

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48T–TSOP

PIN 10º ~ 8º cPin 1 IdentifierD1DLebA2L1EASEATING PLANEGAGE PLANEA1SYMBOLAA1A2Notes:1.This package conforms to JEDEC reference MO-142, Variation DD. 2.Dimensions D1 and E do not include mold protrusion. Allowable protrusion on E is 0.15 mm per side and on D1 is 0.25 mm per side.3. Lead coplanarity is 0.10 mm maximum.DD1EL L1bceCOMMON DIMENSIONS(Unit of Measure = mm)MIN–0.050.9519.8018.3011.900.50NOM––1.0020.0018.4012.000.600.25 BASIC0.170.100.22–0.50 BASIC0.27 0.21MAX1.200.151.0520.2018.5012.100.70Note 2Note 2 NOTE10/18/01TITLE 2325 Orchard Parkway48T, 48-lead (12 x 20 mm Package) Plastic Thin Small Outline San Jose, CA 95131Package, Type I (TSOP)DRAWING NO.48TREV. BR16

AT49BV/LV2048A

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AtmelHeadquarters

CorporateHeadquarters

2325OrchardParkwaySanJose,CA95131TEL1(408)441-0311FAX1(408)487-2600

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ASIC/ASSP/SmartCards

Japan

AtmelRoussetZoneIndustrielle

13106RoussetCedex,FranceTEL(33)4-42-53-60-00FAX(33)4-42-53-60-01AtmelColoradoSprings

1150EastCheyenneMtn.Blvd.ColoradoSprings,CO80906TEL1(719)576-3300FAX1(719)540-1759

AtmelSmartCardICs

ScottishEnterpriseTechnologyParkMaxwellBuilding

EastKilbrideG750QR,ScotlandTEL(44)1355-803-000FAX(44)1355-242-743

AtmelGrenoble

AvenuedeRochepleineBP123

38521Saint-EgreveCedex,FranceTEL(33)4-76-58-30-00FAX(33)4-76-58-34-80

e-mail

literature@atmel.com

WebSite

http://www.atmel.com

©AtmelCorporation2002.

AtmelCorporationmakesnowarrantyfortheuseofitsproducts,otherthanthoseexpresslycontainedintheCompany’sstandardwarrantywhichisdetailedinAtmel’sTermsandConditionslocatedontheCompany’swebsite.TheCompanyassumesnoresponsibilityforanyerrorswhichmayappearinthisdocument,reservestherighttochangedevicesorspecificationsdetailedhereinatanytimewithoutnotice,anddoesnotmakeanycommitmenttoupdatetheinformationcontainedherein.NolicensestopatentsorotherintellectualpropertyofAtmelaregrantedbytheCompanyinconnectionwiththesaleofAtmelproducts,expresslyorbyimplication.Atmel’sproductsarenotauthorizedforuseascriticalcomponentsinlifesupportdevicesorsystems.

ATMEL®istheregisteredtrademarkofAtmel;Battery-Voltage™isthetrademarkofAtmel.Othertermsandproductnamesmaybethetrademarksofothers.

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