tristateddiscuzx2.5
discuzx2.5 时间:2021-04-12 阅读:()
CY62256VN256K(32Kx8)StaticRAMCypressSemiconductorCorporation198ChampionCourtSanJose,CA95134-1709408-943-2600Document#:001-06512Rev.
*BRevisedSeptember25,2009FeaturesTemperatureRangesCommercial:0°Cto70°CIndustrial:–40°Cto85°CAutomotive-A:–40°Cto85°CAutomotive-E:–40°Cto125°CSpeed:70nsLowVoltageRange:2.
7Vto3.
6VLowActivePowerandStandbyPowerEasyMemoryExpansionwithCEandOEFeaturesTTLCompatibleInputsandOutputsAutomaticPowerDownwhenDeselectedCMOSforOptimumSpeedandPowerAvailableinStandardPb-freeandnonPb-free28-Pin(300-mil)NarrowSOIC,28-PinTSOP-I,and28-PinReverseTSOP-IPackagesFunctionalDescriptionTheCY62256VN[1]familyiscomposedoftwohighperformanceCMOSstaticRAM'sorganizedas32Kwordsby8bits.
EasymemoryexpansionisprovidedbyanactiveLOWchipenable(CE)andactiveLOWoutputenable(OE)andtristatedrivers.
Thesedeviceshaveanautomaticpowerdownfeature,reducingthepowerconsumptionbyover99%whendeselected.
AnactiveLOWwriteenablesignal(WE)controlsthewriting/readingoperationofthememory.
WhenCEandWEinputsarebothLOW,dataontheeightdatainput/outputpins(I/O0throughI/O7)iswrittenintothememorylocationaddressedbytheaddresspresentontheaddresspins(A0throughA14).
Readingthedeviceisaccomplishedbyselectingthedeviceandenablingtheoutputs,CEandOEactiveLOW,whileWEremainsinactiveorHIGH.
Undertheseconditions,thecontentsofthelocationaddressedbytheinformationonaddresspinsarepresentontheeightdatainput/outputpins.
Theinput/outputpinsremaininahighimpedancestateunlessthechipisselected,outputsareenabled,andwriteenable(WE)isHIGH.
.
A9A8A7A6A5A4A3A2COLUMNDECODERROWDECODERSENSEAMPSINPUTBUFFERPOWERDOWNWEOEI/O0CEI/O1I/O2I/O332Kx8ARRAYI/O7I/O6I/O5I/O4A10A13A11A12AA14A10LogicBlockDiagramNote1.
Forbestpracticerecommendations,refertotheCypressapplicationnote"SystemDesignGuidelines"onhttp://www.
cypress.
com.
[+]FeedbackCY62256VNDocument#:001-06512Rev.
*BPage2of13PinConfigurationsProductPortfolioProductRangeVCCRange(V)PowerDissipationOperating,ICC(mA)Standby,ISB2(μA)MinTyp[2]MaxTyp[2]MaxTyp[2]MaxCY62256VNLLCom'l2.
73.
03.
611300.
15CY62256VNLLInd'l2.
73.
03.
611300.
110CY62256VNLLAutomotive-A2.
73.
03.
611300.
110CY62256VNLLAutomotive-E2.
73.
03.
611300.
113012345678910111415162019181721242322TopViewNarrowSOIC121325282726GNDA6A7A8A9A10A11A12A13WEVCCA4A3A2A1I/O7I/O6I/O5I/O4A14A5I/O0I/O1I/O2CEOEA0I/O322232425262728125101115141312161918173420217689OEA1A2A3A4WEVCCA5A6A7A8A9A0CEI/O7I/O6I/O5GNDI/O2I/O1I/O4I/O0A14A10A11A13A12I/O3TSOPITopView(nottoscale)ReversePinout22232425262728125101115141312161918173420217689OEA1A2A3A4WEVCCA5A6A7A8A9A0CEI/O7I/O6I/O5GNDI/O2I/O1I/O4I/O0A14A10A11A13A12I/O3TSOPITopView(nottoscale)PinDefinitionsPinNumberTypeDescription1–10,21,23–26InputA0–A14.
AddressInputs11–13,15–19Input/OutputI/O0–I/O7.
Datalines.
Usedasinputoroutputlinesdependingonoperation27Input/ControlWE.
WhenselectedLOW,aWRITEisconducted.
WhenselectedHIGH,aREADisconducted20Input/ControlCE.
WhenLOW,selectsthechip.
WhenHIGH,deselectsthechip22Input/ControlOE.
OutputEnable.
ControlsthedirectionoftheI/Opins.
WhenLOW,theI/Opinsbehaveasoutputs.
WhendeassertedHIGH,I/Opinsaretristated,andactasinputdatapins14GroundGND.
Groundforthedevice28PowerSupplyVCC.
PowersupplyforthedeviceNote2.
Typicalvaluesareincludedforreferenceonlyandarenotguaranteedortested.
TypicalvaluesaremeasuredatVCC=VCCTyp,TA=25°C,andtAA=70ns.
[+]FeedbackCY62256VNDocument#:001-06512Rev.
*BPage3of13MaximumRatingsExceedingmaximumratingsmayimpairtheusefullifeofthedevice.
Theseuserguidelinesarenottested.
StorageTemperature65°Cto+150°CAmbientTemperaturewithPowerApplied55°Cto+125°CSupplyVoltagetoGroundPotential(Pin28toPin14)0.
5Vto+4.
6VDCVoltageAppliedtoOutputsinHigh-ZState[3]0.
5VtoVCC+0.
5VDCInputVoltage[3]0.
5VtoVCC+0.
5VOutputCurrentintoOutputs(LOW)20mAStaticDischargeVoltage.
2001V(perMIL-STD-883,Method3015)Latch-upCurrent.
200mAOperatingRangeDeviceRangeAmbientTemperature(TA)[4]VCCCY62256VNCommercial0°Cto+70°C2.
7Vto3.
6VIndustrial40°Cto+85°CAutomotive-A40°Cto+85°CAutomotive-E40°Cto+125°CElectricalCharacteristicsOvertheOperatingRangeParameterDescriptionTestConditions-70UnitMinTyp[2]MaxVOHOutputHIGHVoltageIOH=1.
0mAVCC=2.
7V2.
4VVOLOutputLOWVoltageIOL=2.
1mAVCC=2.
7V0.
4VVIHInputHIGHVoltage2.
2VCC+0.
3VVVILInputLOWVoltage–0.
50.
8VIIXInputLeakageCurrentGNDVIH,VIN>VIHorVINVCC–0.
3VVIN>VCC–0.
3VorVINVCC–0.
3V,VIN>VCC–0.
3VorVIN1.
4VDATARETENTIONMODEtRCEVCC[+]FeedbackCY62256VNDocument#:001-06512Rev.
*BPage5of13SwitchingCharacteristicsOvertheOperatingRange[7]ParameterDescriptionCY62256VN-70UnitMinMaxReadCycletRCReadCycleTime70nstAAAddresstoDataValid70nstOHADataHoldfromAddressChange10nstACECELOWtoDataValid70nstDOEOELOWtoDataValid35nstLZOEOELOWtoLow-Z[8]5nstHZOEOEHIGHtoHigh-Z[8,9]25nstLZCECELOWtoLow-Z[8]10nstHZCECEHIGHtoHigh-Z[8,9]25nstPUCELOWtoPowerUp0nstPDCEHIGHtoPowerDown70nsWriteCycle[10,11]tWCWriteCycleTime70nstSCECELOWtoWriteEnd60nstAWAddressSetuptoWriteEnd60nstHAAddressHoldfromWriteEnd0nstSAAddressSetuptoWriteStart0nstPWEWEPulseWidth50nstSDDataSetuptoWriteEnd30nstHDDataHoldfromWriteEnd0nstHZWEWELOWtoHigh-Z[8,9]25nstLZWEWEHIGHtoLow-Z[8]10nsNotes7.
Testconditionsassumesignaltransitiontimeof5nsorlesstimingreferencelevelsofVCC/2,inputpulselevelsof0toVCC,andoutputloadingofthespecifiedIOL/IOHand100-pFloadcapacitance.
8.
Atanygiventemperatureandvoltagecondition,tHZCEislessthantLZCE,tHZOEislessthantLZOE,andtHZWEislessthantLZWEforanygivendevice.
9.
tHZOE,tHZCE,andtHZWEarespecifiedwithCL=5pFasin(b)ofACTestLoads.
Transitionismeasured±200mVfromsteady-statevoltage.
10.
TheinternalwritetimeofthememoryisdefinedbytheoverlapofCELOWandWELOW.
BothsignalsmustbeLOWtoinitiateawriteandeithersignalcanterminateawritebygoingHIGH.
Thedatainputset-upandholdtimingshouldbereferencedtotherisingedgeofthesignalthatterminatesthewrite.
11.
Theminimumwritecycletimeforwritecycle#3(WEcontrolled,OELOW)isthesumoftHZWEandtSD.
[+]FeedbackCY62256VNDocument#:001-06512Rev.
*BPage6of13SwitchingWaveformsFigure3.
ReadCycleNo.
1[12,13]Figure4.
ReadCycleNo.
2[13,14]Figure5.
WriteCycleNo.
1(WEControlled)[10,15,16]Notes12.
Deviceiscontinuouslyselected.
OE,CE=VIL.
13.
WEisHIGHforreadcycle.
14.
AddressvalidpriortoorcoincidentwithCEtransitionLOW.
15.
DataI/OishighimpedanceifOE=VIH.
16.
IfCEgoesHIGHsimultaneouslywithWEHIGH,theoutputremainsinahighimpedancestate.
17.
Duringthisperiod,theI/Osareinoutputstateandinputsignalsshouldnotbeapplied.
ADDRESSDATAOUTPREVIOUSDATAVALIDDATAVALIDtRCtAAtOHA50%50%DATAVALIDtRCtACEtDOEtLZOEtLZCEtPUDATAOUTHIGHIMPEDANCEIMPEDANCEICCISBtHZOEtHZCEtPDOECEHIGHVCCSUPPLYCURRENTtHDtSDtPWEtSAtHAtAWtWCDATAI/OADDRESSCEWEOEtHZOEDATAINVALIDNOTE17[+]FeedbackCY62256VNDocument#:001-06512Rev.
*BPage7of13Figure6.
WriteCycleNo.
2(CEControlled)[10,15,16]Figure7.
WriteCycleNo.
3(WEControlled,OELOW)[11,16]SwitchingWaveforms(continued)tWCtAWtSAtHAtHDtSDtSCEWEDATAI/OADDRESSCEDATAINVALIDDATAI/OADDRESStHDtSDtLZWEtSAtHAtAWtWCtHZWEDATAINVALIDNOTE17WECE[+]FeedbackCY62256VNDocument#:001-06512Rev.
*BPage8of13TypicalDCandACCharacteristics1.
61.
81.
00.
60.
40.
21.
61.
41.
21.
00.
8552512555251251.
21.
00.
8NORMALIZEDtAA–14–12–10–8–6–40.
01.
01.
522.
5OUTPUTSOURCECURRENT(mA)SUPPLYVOLTAGE(V)NORMALIZEDSUPPLYCURRENTvs.
SUPPLYVOLTAGEAMBIENTTEMPERATURE(°C)vs.
AMBIENTTEMPERATUREAMBIENTTEMPERATURE(°C)OUTPUTVOLTAGE(V)0.
81.
51.
00.
51.
652.
12.
63.
13.
6NORMALIZEDtAASUPPLYVOLTAGE(V)NORMALIZEDACCESSTIME6420.
01.
02.
03.
0OUTPUTSINKCURRENT(mA)0OUTPUTVOLTAGE(V)OUTPUTSINKCURRENTvs.
OUTPUTVOLTAGE0.
60.
40.
20.
0NORMALIZEDICCNORMALIZEDICCTA=25°C0.
60.
002.
52.
0TA=25°C1.
455251052.
52.
01.
5AMBIENTTEMPERATURE(°C)1.
00.
50.
0–0.
5ISB3.
0STANDBYCURRENTISB2μAVCC=3.
0VVcc=3.
3V1.
61.
82.
02.
42.
83.
23.
61.
41.
2VCC=3.
0V0.
58101214TA=25°CTA=25°CNORMALIZEDSUPPLYCURRENTvs.
AMBIENTTEMPERATUREvs.
SUPPLYVOLTAGENORMALIZEDACCESSTIMEvs.
AMBIENTTEMPERATUREOUTPUTSOURCECURRENTvs.
OUTPUTVOLTAGE[+]FeedbackCY62256VNDocument#:001-06512Rev.
*BPage9of13TypicalDCandACCharacteristics(continued)30.
025.
020.
015.
010.
05.
00200400600800DELTAt(ns)AACAPACITANCE(pF)TYPICALACCESSTIMECHANGEvs.
OUTPUTLOADING1.
251.
000.
75102030NORMALIZEDICCCYCLEFREQUENCY(MHz)NORMALIZEDICCvs.
CYCLETIME0.
010000.
50TA=25°CVIN=0.
5V1VCC=3.
0VTA=25°CVCC=3VTruthTableCEWEOEInputs/OutputsModePowerHXXHigh-ZDeselect/PowerDownStandby(ISB)LHLDataOutReadActive(ICC)LLXDataInWriteActive(ICC)LHHHigh-ZDeselect,OutputDisabledActive(ICC)OrderingInformationSpeed(ns)OrderingCodePackageDiagramPackageTypeOperatingRange70CY62256VNLL-70SNC51-8509228-Pin(300-mil)NarrowSOICCommercialCY62256VNLL-70SNXC28-Pin(300-mil)NarrowSOIC(Pb-Free)CY62256VNLL-70ZC51-8507128-PinTSOPICY62256VNLL-70ZXC28-PinTSOPI(Pb-Free)CY62256VNLL-70SNXI51-8509228-Pin(300-mil)NarrowSOIC(Pb-Free)IndustrialCY62256VNLL-70ZI51-8507128-PinTSOPICY62256VNLL-70ZXI28-PinTSOPI(Pb-Free)CY62256VNLL-70ZRI51-8507428-PinReverseTSOPICY62256VNLL-70ZRXI28-PinReverseTSOPI(Pb-Free)CY62256VNLL-70ZXA51-8507128-PinTSOPI(Pb-Free)Automotive-ACY62256VNLL-70SNXE51-8509228-Pin(300-mil)NarrowSOIC(Pb-Free)Automotive-ECY62256VNLL-70ZXE51-8507128-PinTSOPI(Pb-Free)CY62256VNLL-70ZRXE51-8507428-PinReverseTSOPI(Pb-Free)ContactyourlocalCypresssalesrepresentativeforavailabilityofotherparts[+]FeedbackCY62256VNDocument#:001-06512Rev.
*BPage10of13PackageDiagramsFigure8.
28-Pin(300-mil)SNC(NarrowBody)(51-85092)51-85092-*B[+]FeedbackCY62256VNDocument#:001-06512Rev.
*BPage11of13Figure9.
28-PinTSOP1(8*13.
4mm)(51-85071)51-85071-*G[+]FeedbackCY62256VNDocument#:001-06512Rev.
*BPage12of13Figure10.
28-PinReverseTSOP1(8*13.
4mm)(51-85074)51-85074-*F[+]FeedbackDocument#:001-06512Rev.
*BRevisedSeptember25,2009Page13of13Allproductsandcompanynamesmentionedinthisdocumentmaybethetrademarksoftheirrespectiveholders.
CY62256VNCypressSemiconductorCorporation,2006-2009.
Theinformationcontainedhereinissubjecttochangewithoutnotice.
CypressSemiconductorCorporationassumesnoresponsibilityfortheuseofanycircuitryotherthancircuitryembodiedinaCypressproduct.
Nordoesitconveyorimplyanylicenseunderpatentorotherrights.
Cypressproductsarenotwarrantednorintendedtobeusedformedical,lifesupport,lifesaving,criticalcontrolorsafetyapplications,unlesspursuanttoanexpresswrittenagreementwithCypress.
Furthermore,Cypressdoesnotauthorizeitsproductsforuseascriticalcomponentsinlife-supportsystemswhereamalfunctionorfailuremayreasonablybeexpectedtoresultinsignificantinjurytotheuser.
TheinclusionofCypressproductsinlife-supportsystemsapplicationimpliesthatthemanufacturerassumesallriskofsuchuseandindoingsoindemnifiesCypressagainstallcharges.
AnySourceCode(softwareand/orfirmware)isownedbyCypressSemiconductorCorporation(Cypress)andisprotectedbyandsubjecttoworldwidepatentprotection(UnitedStatesandforeign),UnitedStatescopyrightlawsandinternationaltreatyprovisions.
Cypressherebygrantstolicenseeapersonal,non-exclusive,non-transferablelicensetocopy,use,modify,createderivativeworksof,andcompiletheCypressSourceCodeandderivativeworksforthesolepurposeofcreatingcustomsoftwareandorfirmwareinsupportoflicenseeproducttobeusedonlyinconjunctionwithaCypressintegratedcircuitasspecifiedintheapplicableagreement.
Anyreproduction,modification,translation,compilation,orrepresentationofthisSourceCodeexceptasspecifiedaboveisprohibitedwithouttheexpresswrittenpermissionofCypress.
Disclaimer:CYPRESSMAKESNOWARRANTYOFANYKIND,EXPRESSORIMPLIED,WITHREGARDTOTHISMATERIAL,INCLUDING,BUTNOTLIMITEDTO,THEIMPLIEDWARRANTIESOFMERCHANTABILITYANDFITNESSFORAPARTICULARPURPOSE.
Cypressreservestherighttomakechangeswithoutfurthernoticetothematerialsdescribedherein.
Cypressdoesnotassumeanyliabilityarisingoutoftheapplicationoruseofanyproductorcircuitdescribedherein.
Cypressdoesnotauthorizeitsproductsforuseascriticalcomponentsinlife-supportsystemswhereamalfunctionorfailuremayreasonablybeexpectedtoresultinsignificantinjurytotheuser.
TheinclusionofCypress'productinalife-supportsystemsapplicationimpliesthatthemanufacturerassumesallriskofsuchuseandindoingsoindemnifiesCypressagainstallcharges.
UsemaybelimitedbyandsubjecttotheapplicableCypresssoftwarelicenseagreement.
DocumentHistoryPageSales,Solutions,andLegalInformationWorldwideSalesandDesignSupportCypressmaintainsaworldwidenetworkofoffices,solutioncenters,manufacturersrepresentatives,anddistributors.
Tofindtheofficeclosesttoyou,visitusatcypress.
com/sales.
ProductsPSoCpsoc.
cypress.
comClocks&Buffersclocks.
cypress.
comWirelesswireless.
cypress.
comMemoriesmemory.
cypress.
comImageSensorsimage.
cypress.
comDocumentTitle:CY62256VN256K(32Kx8)StaticRAMDocumentNumber:001-06512Rev.
ECNNo.
SubmissionDateOrig.
ofChangeDescriptionofChange**426504SeeECNNXRNewDataSheet*A488954SeeECNNXRAddedAutomotiveproductUpdatedorderingInformationtable*B276923909/25/09VKN/AESACorrectedVILdescriptionintheElectricalCharacteristicstable[+]Feedback
*BRevisedSeptember25,2009FeaturesTemperatureRangesCommercial:0°Cto70°CIndustrial:–40°Cto85°CAutomotive-A:–40°Cto85°CAutomotive-E:–40°Cto125°CSpeed:70nsLowVoltageRange:2.
7Vto3.
6VLowActivePowerandStandbyPowerEasyMemoryExpansionwithCEandOEFeaturesTTLCompatibleInputsandOutputsAutomaticPowerDownwhenDeselectedCMOSforOptimumSpeedandPowerAvailableinStandardPb-freeandnonPb-free28-Pin(300-mil)NarrowSOIC,28-PinTSOP-I,and28-PinReverseTSOP-IPackagesFunctionalDescriptionTheCY62256VN[1]familyiscomposedoftwohighperformanceCMOSstaticRAM'sorganizedas32Kwordsby8bits.
EasymemoryexpansionisprovidedbyanactiveLOWchipenable(CE)andactiveLOWoutputenable(OE)andtristatedrivers.
Thesedeviceshaveanautomaticpowerdownfeature,reducingthepowerconsumptionbyover99%whendeselected.
AnactiveLOWwriteenablesignal(WE)controlsthewriting/readingoperationofthememory.
WhenCEandWEinputsarebothLOW,dataontheeightdatainput/outputpins(I/O0throughI/O7)iswrittenintothememorylocationaddressedbytheaddresspresentontheaddresspins(A0throughA14).
Readingthedeviceisaccomplishedbyselectingthedeviceandenablingtheoutputs,CEandOEactiveLOW,whileWEremainsinactiveorHIGH.
Undertheseconditions,thecontentsofthelocationaddressedbytheinformationonaddresspinsarepresentontheeightdatainput/outputpins.
Theinput/outputpinsremaininahighimpedancestateunlessthechipisselected,outputsareenabled,andwriteenable(WE)isHIGH.
.
A9A8A7A6A5A4A3A2COLUMNDECODERROWDECODERSENSEAMPSINPUTBUFFERPOWERDOWNWEOEI/O0CEI/O1I/O2I/O332Kx8ARRAYI/O7I/O6I/O5I/O4A10A13A11A12AA14A10LogicBlockDiagramNote1.
Forbestpracticerecommendations,refertotheCypressapplicationnote"SystemDesignGuidelines"onhttp://www.
cypress.
com.
[+]FeedbackCY62256VNDocument#:001-06512Rev.
*BPage2of13PinConfigurationsProductPortfolioProductRangeVCCRange(V)PowerDissipationOperating,ICC(mA)Standby,ISB2(μA)MinTyp[2]MaxTyp[2]MaxTyp[2]MaxCY62256VNLLCom'l2.
73.
03.
611300.
15CY62256VNLLInd'l2.
73.
03.
611300.
110CY62256VNLLAutomotive-A2.
73.
03.
611300.
110CY62256VNLLAutomotive-E2.
73.
03.
611300.
113012345678910111415162019181721242322TopViewNarrowSOIC121325282726GNDA6A7A8A9A10A11A12A13WEVCCA4A3A2A1I/O7I/O6I/O5I/O4A14A5I/O0I/O1I/O2CEOEA0I/O322232425262728125101115141312161918173420217689OEA1A2A3A4WEVCCA5A6A7A8A9A0CEI/O7I/O6I/O5GNDI/O2I/O1I/O4I/O0A14A10A11A13A12I/O3TSOPITopView(nottoscale)ReversePinout22232425262728125101115141312161918173420217689OEA1A2A3A4WEVCCA5A6A7A8A9A0CEI/O7I/O6I/O5GNDI/O2I/O1I/O4I/O0A14A10A11A13A12I/O3TSOPITopView(nottoscale)PinDefinitionsPinNumberTypeDescription1–10,21,23–26InputA0–A14.
AddressInputs11–13,15–19Input/OutputI/O0–I/O7.
Datalines.
Usedasinputoroutputlinesdependingonoperation27Input/ControlWE.
WhenselectedLOW,aWRITEisconducted.
WhenselectedHIGH,aREADisconducted20Input/ControlCE.
WhenLOW,selectsthechip.
WhenHIGH,deselectsthechip22Input/ControlOE.
OutputEnable.
ControlsthedirectionoftheI/Opins.
WhenLOW,theI/Opinsbehaveasoutputs.
WhendeassertedHIGH,I/Opinsaretristated,andactasinputdatapins14GroundGND.
Groundforthedevice28PowerSupplyVCC.
PowersupplyforthedeviceNote2.
Typicalvaluesareincludedforreferenceonlyandarenotguaranteedortested.
TypicalvaluesaremeasuredatVCC=VCCTyp,TA=25°C,andtAA=70ns.
[+]FeedbackCY62256VNDocument#:001-06512Rev.
*BPage3of13MaximumRatingsExceedingmaximumratingsmayimpairtheusefullifeofthedevice.
Theseuserguidelinesarenottested.
StorageTemperature65°Cto+150°CAmbientTemperaturewithPowerApplied55°Cto+125°CSupplyVoltagetoGroundPotential(Pin28toPin14)0.
5Vto+4.
6VDCVoltageAppliedtoOutputsinHigh-ZState[3]0.
5VtoVCC+0.
5VDCInputVoltage[3]0.
5VtoVCC+0.
5VOutputCurrentintoOutputs(LOW)20mAStaticDischargeVoltage.
2001V(perMIL-STD-883,Method3015)Latch-upCurrent.
200mAOperatingRangeDeviceRangeAmbientTemperature(TA)[4]VCCCY62256VNCommercial0°Cto+70°C2.
7Vto3.
6VIndustrial40°Cto+85°CAutomotive-A40°Cto+85°CAutomotive-E40°Cto+125°CElectricalCharacteristicsOvertheOperatingRangeParameterDescriptionTestConditions-70UnitMinTyp[2]MaxVOHOutputHIGHVoltageIOH=1.
0mAVCC=2.
7V2.
4VVOLOutputLOWVoltageIOL=2.
1mAVCC=2.
7V0.
4VVIHInputHIGHVoltage2.
2VCC+0.
3VVVILInputLOWVoltage–0.
50.
8VIIXInputLeakageCurrentGNDVIH,VIN>VIHorVINVCC–0.
3VVIN>VCC–0.
3VorVINVCC–0.
3V,VIN>VCC–0.
3VorVIN1.
4VDATARETENTIONMODEtRCEVCC[+]FeedbackCY62256VNDocument#:001-06512Rev.
*BPage5of13SwitchingCharacteristicsOvertheOperatingRange[7]ParameterDescriptionCY62256VN-70UnitMinMaxReadCycletRCReadCycleTime70nstAAAddresstoDataValid70nstOHADataHoldfromAddressChange10nstACECELOWtoDataValid70nstDOEOELOWtoDataValid35nstLZOEOELOWtoLow-Z[8]5nstHZOEOEHIGHtoHigh-Z[8,9]25nstLZCECELOWtoLow-Z[8]10nstHZCECEHIGHtoHigh-Z[8,9]25nstPUCELOWtoPowerUp0nstPDCEHIGHtoPowerDown70nsWriteCycle[10,11]tWCWriteCycleTime70nstSCECELOWtoWriteEnd60nstAWAddressSetuptoWriteEnd60nstHAAddressHoldfromWriteEnd0nstSAAddressSetuptoWriteStart0nstPWEWEPulseWidth50nstSDDataSetuptoWriteEnd30nstHDDataHoldfromWriteEnd0nstHZWEWELOWtoHigh-Z[8,9]25nstLZWEWEHIGHtoLow-Z[8]10nsNotes7.
Testconditionsassumesignaltransitiontimeof5nsorlesstimingreferencelevelsofVCC/2,inputpulselevelsof0toVCC,andoutputloadingofthespecifiedIOL/IOHand100-pFloadcapacitance.
8.
Atanygiventemperatureandvoltagecondition,tHZCEislessthantLZCE,tHZOEislessthantLZOE,andtHZWEislessthantLZWEforanygivendevice.
9.
tHZOE,tHZCE,andtHZWEarespecifiedwithCL=5pFasin(b)ofACTestLoads.
Transitionismeasured±200mVfromsteady-statevoltage.
10.
TheinternalwritetimeofthememoryisdefinedbytheoverlapofCELOWandWELOW.
BothsignalsmustbeLOWtoinitiateawriteandeithersignalcanterminateawritebygoingHIGH.
Thedatainputset-upandholdtimingshouldbereferencedtotherisingedgeofthesignalthatterminatesthewrite.
11.
Theminimumwritecycletimeforwritecycle#3(WEcontrolled,OELOW)isthesumoftHZWEandtSD.
[+]FeedbackCY62256VNDocument#:001-06512Rev.
*BPage6of13SwitchingWaveformsFigure3.
ReadCycleNo.
1[12,13]Figure4.
ReadCycleNo.
2[13,14]Figure5.
WriteCycleNo.
1(WEControlled)[10,15,16]Notes12.
Deviceiscontinuouslyselected.
OE,CE=VIL.
13.
WEisHIGHforreadcycle.
14.
AddressvalidpriortoorcoincidentwithCEtransitionLOW.
15.
DataI/OishighimpedanceifOE=VIH.
16.
IfCEgoesHIGHsimultaneouslywithWEHIGH,theoutputremainsinahighimpedancestate.
17.
Duringthisperiod,theI/Osareinoutputstateandinputsignalsshouldnotbeapplied.
ADDRESSDATAOUTPREVIOUSDATAVALIDDATAVALIDtRCtAAtOHA50%50%DATAVALIDtRCtACEtDOEtLZOEtLZCEtPUDATAOUTHIGHIMPEDANCEIMPEDANCEICCISBtHZOEtHZCEtPDOECEHIGHVCCSUPPLYCURRENTtHDtSDtPWEtSAtHAtAWtWCDATAI/OADDRESSCEWEOEtHZOEDATAINVALIDNOTE17[+]FeedbackCY62256VNDocument#:001-06512Rev.
*BPage7of13Figure6.
WriteCycleNo.
2(CEControlled)[10,15,16]Figure7.
WriteCycleNo.
3(WEControlled,OELOW)[11,16]SwitchingWaveforms(continued)tWCtAWtSAtHAtHDtSDtSCEWEDATAI/OADDRESSCEDATAINVALIDDATAI/OADDRESStHDtSDtLZWEtSAtHAtAWtWCtHZWEDATAINVALIDNOTE17WECE[+]FeedbackCY62256VNDocument#:001-06512Rev.
*BPage8of13TypicalDCandACCharacteristics1.
61.
81.
00.
60.
40.
21.
61.
41.
21.
00.
8552512555251251.
21.
00.
8NORMALIZEDtAA–14–12–10–8–6–40.
01.
01.
522.
5OUTPUTSOURCECURRENT(mA)SUPPLYVOLTAGE(V)NORMALIZEDSUPPLYCURRENTvs.
SUPPLYVOLTAGEAMBIENTTEMPERATURE(°C)vs.
AMBIENTTEMPERATUREAMBIENTTEMPERATURE(°C)OUTPUTVOLTAGE(V)0.
81.
51.
00.
51.
652.
12.
63.
13.
6NORMALIZEDtAASUPPLYVOLTAGE(V)NORMALIZEDACCESSTIME6420.
01.
02.
03.
0OUTPUTSINKCURRENT(mA)0OUTPUTVOLTAGE(V)OUTPUTSINKCURRENTvs.
OUTPUTVOLTAGE0.
60.
40.
20.
0NORMALIZEDICCNORMALIZEDICCTA=25°C0.
60.
002.
52.
0TA=25°C1.
455251052.
52.
01.
5AMBIENTTEMPERATURE(°C)1.
00.
50.
0–0.
5ISB3.
0STANDBYCURRENTISB2μAVCC=3.
0VVcc=3.
3V1.
61.
82.
02.
42.
83.
23.
61.
41.
2VCC=3.
0V0.
58101214TA=25°CTA=25°CNORMALIZEDSUPPLYCURRENTvs.
AMBIENTTEMPERATUREvs.
SUPPLYVOLTAGENORMALIZEDACCESSTIMEvs.
AMBIENTTEMPERATUREOUTPUTSOURCECURRENTvs.
OUTPUTVOLTAGE[+]FeedbackCY62256VNDocument#:001-06512Rev.
*BPage9of13TypicalDCandACCharacteristics(continued)30.
025.
020.
015.
010.
05.
00200400600800DELTAt(ns)AACAPACITANCE(pF)TYPICALACCESSTIMECHANGEvs.
OUTPUTLOADING1.
251.
000.
75102030NORMALIZEDICCCYCLEFREQUENCY(MHz)NORMALIZEDICCvs.
CYCLETIME0.
010000.
50TA=25°CVIN=0.
5V1VCC=3.
0VTA=25°CVCC=3VTruthTableCEWEOEInputs/OutputsModePowerHXXHigh-ZDeselect/PowerDownStandby(ISB)LHLDataOutReadActive(ICC)LLXDataInWriteActive(ICC)LHHHigh-ZDeselect,OutputDisabledActive(ICC)OrderingInformationSpeed(ns)OrderingCodePackageDiagramPackageTypeOperatingRange70CY62256VNLL-70SNC51-8509228-Pin(300-mil)NarrowSOICCommercialCY62256VNLL-70SNXC28-Pin(300-mil)NarrowSOIC(Pb-Free)CY62256VNLL-70ZC51-8507128-PinTSOPICY62256VNLL-70ZXC28-PinTSOPI(Pb-Free)CY62256VNLL-70SNXI51-8509228-Pin(300-mil)NarrowSOIC(Pb-Free)IndustrialCY62256VNLL-70ZI51-8507128-PinTSOPICY62256VNLL-70ZXI28-PinTSOPI(Pb-Free)CY62256VNLL-70ZRI51-8507428-PinReverseTSOPICY62256VNLL-70ZRXI28-PinReverseTSOPI(Pb-Free)CY62256VNLL-70ZXA51-8507128-PinTSOPI(Pb-Free)Automotive-ACY62256VNLL-70SNXE51-8509228-Pin(300-mil)NarrowSOIC(Pb-Free)Automotive-ECY62256VNLL-70ZXE51-8507128-PinTSOPI(Pb-Free)CY62256VNLL-70ZRXE51-8507428-PinReverseTSOPI(Pb-Free)ContactyourlocalCypresssalesrepresentativeforavailabilityofotherparts[+]FeedbackCY62256VNDocument#:001-06512Rev.
*BPage10of13PackageDiagramsFigure8.
28-Pin(300-mil)SNC(NarrowBody)(51-85092)51-85092-*B[+]FeedbackCY62256VNDocument#:001-06512Rev.
*BPage11of13Figure9.
28-PinTSOP1(8*13.
4mm)(51-85071)51-85071-*G[+]FeedbackCY62256VNDocument#:001-06512Rev.
*BPage12of13Figure10.
28-PinReverseTSOP1(8*13.
4mm)(51-85074)51-85074-*F[+]FeedbackDocument#:001-06512Rev.
*BRevisedSeptember25,2009Page13of13Allproductsandcompanynamesmentionedinthisdocumentmaybethetrademarksoftheirrespectiveholders.
CY62256VNCypressSemiconductorCorporation,2006-2009.
Theinformationcontainedhereinissubjecttochangewithoutnotice.
CypressSemiconductorCorporationassumesnoresponsibilityfortheuseofanycircuitryotherthancircuitryembodiedinaCypressproduct.
Nordoesitconveyorimplyanylicenseunderpatentorotherrights.
Cypressproductsarenotwarrantednorintendedtobeusedformedical,lifesupport,lifesaving,criticalcontrolorsafetyapplications,unlesspursuanttoanexpresswrittenagreementwithCypress.
Furthermore,Cypressdoesnotauthorizeitsproductsforuseascriticalcomponentsinlife-supportsystemswhereamalfunctionorfailuremayreasonablybeexpectedtoresultinsignificantinjurytotheuser.
TheinclusionofCypressproductsinlife-supportsystemsapplicationimpliesthatthemanufacturerassumesallriskofsuchuseandindoingsoindemnifiesCypressagainstallcharges.
AnySourceCode(softwareand/orfirmware)isownedbyCypressSemiconductorCorporation(Cypress)andisprotectedbyandsubjecttoworldwidepatentprotection(UnitedStatesandforeign),UnitedStatescopyrightlawsandinternationaltreatyprovisions.
Cypressherebygrantstolicenseeapersonal,non-exclusive,non-transferablelicensetocopy,use,modify,createderivativeworksof,andcompiletheCypressSourceCodeandderivativeworksforthesolepurposeofcreatingcustomsoftwareandorfirmwareinsupportoflicenseeproducttobeusedonlyinconjunctionwithaCypressintegratedcircuitasspecifiedintheapplicableagreement.
Anyreproduction,modification,translation,compilation,orrepresentationofthisSourceCodeexceptasspecifiedaboveisprohibitedwithouttheexpresswrittenpermissionofCypress.
Disclaimer:CYPRESSMAKESNOWARRANTYOFANYKIND,EXPRESSORIMPLIED,WITHREGARDTOTHISMATERIAL,INCLUDING,BUTNOTLIMITEDTO,THEIMPLIEDWARRANTIESOFMERCHANTABILITYANDFITNESSFORAPARTICULARPURPOSE.
Cypressreservestherighttomakechangeswithoutfurthernoticetothematerialsdescribedherein.
Cypressdoesnotassumeanyliabilityarisingoutoftheapplicationoruseofanyproductorcircuitdescribedherein.
Cypressdoesnotauthorizeitsproductsforuseascriticalcomponentsinlife-supportsystemswhereamalfunctionorfailuremayreasonablybeexpectedtoresultinsignificantinjurytotheuser.
TheinclusionofCypress'productinalife-supportsystemsapplicationimpliesthatthemanufacturerassumesallriskofsuchuseandindoingsoindemnifiesCypressagainstallcharges.
UsemaybelimitedbyandsubjecttotheapplicableCypresssoftwarelicenseagreement.
DocumentHistoryPageSales,Solutions,andLegalInformationWorldwideSalesandDesignSupportCypressmaintainsaworldwidenetworkofoffices,solutioncenters,manufacturersrepresentatives,anddistributors.
Tofindtheofficeclosesttoyou,visitusatcypress.
com/sales.
ProductsPSoCpsoc.
cypress.
comClocks&Buffersclocks.
cypress.
comWirelesswireless.
cypress.
comMemoriesmemory.
cypress.
comImageSensorsimage.
cypress.
comDocumentTitle:CY62256VN256K(32Kx8)StaticRAMDocumentNumber:001-06512Rev.
ECNNo.
SubmissionDateOrig.
ofChangeDescriptionofChange**426504SeeECNNXRNewDataSheet*A488954SeeECNNXRAddedAutomotiveproductUpdatedorderingInformationtable*B276923909/25/09VKN/AESACorrectedVILdescriptionintheElectricalCharacteristicstable[+]Feedback
- tristateddiscuzx2.5相关文档
- RINdiscuzx2.5
- 资源discuzx2.5
- GR64F9discuzx2.5
- 空气质量(PM2.5/P10)变送器使用说明书
- proactivediscuzx2.5
- Sitediscuzx2.5
LightNode(7.71美元),免认证高质量香港CN2 GIA
LightNode是一家位于香港的VPS服务商.提供基于KVM虚拟化技术的VPS.在提供全球常见节点的同时，还具备东南亚地区、中国香港等边缘节点.满足开发者建站，游戏应用，外贸电商等应用场景的需求。新用户注册充值就送，最高可获得20美元的奖励金！成为LightNode的注册用户后，还可以获得属于自己的邀请链接。通过你的邀请链接带来的注册用户，你将直接获得该用户的消费的10%返佣，永久有效！平台目前...
cyun29元/月,香港CN2 GIA云服务器低至起;香港多ip站群云服务器4核4G
cyun怎么样?cyun蓝米数据是一家(香港)藍米數據有限公司旗下品牌，蓝米云、蓝米主机等同属于该公司品牌。CYUN全系列云产品采用KVM架构，SSD磁盘阵列，优化线路，低延迟，高稳定。目前，cyun推出的香港云服务器性价比超高，香港cn2 gia云服务器,1核1G1M/系统盘+20G数据盘,低至29元/月起;香港多ip站群云服务器,16个ip/4核4G仅220元/月起，希望买香港站群服务器的站长...
青果云（590元/年)，美国vps洛杉矶CN2 GIA主机测评 1核1G 10M
青果网络QG.NET定位为高效多云管理服务商，已拥有工信部颁发的全网云计算/CDN/IDC/ISP/IP-VPN等多项资质，是CNNIC/APNIC联盟的成员之一，2019年荣获国家高薪技术企业、福建省省级高新技术企业双项荣誉。那么青果网络作为国内主流的IDC厂商之一，那么其旗下美国洛杉矶CN2 GIA线路云服务器到底怎么样？官方网站：https://www.qg.net/CPU内存系统盘流量宽带...
discuzx2.5为你推荐
-
!'UIDETO"UILDING3ECURE7EB!PPLICATIONSinternalservererrorHTTP/1.1500Internal Server Error.怎么办呐flashfxpflashfxp怎么用？重庆网络公司一九互联重庆本地的网约车平台有哪些？如何识别比较正规的网约车平台？支付宝蜻蜓发布蜻蜓支付可以代理么企业信息查询系统官网怎么查自己办了几个工商营业执照dell服务器bios设置戴尔服务器720bios设置硬盘启动360公司迁至天津公司名字变更，以前在北京，现在在天津，跨地区了怎么弄？yixingjia报价是什么意思电子商务世界世界第一的电子商务网站???