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IS46R16160D-6BLA2 Datasheet(PDF) 9 Page - Integrated Silicon Solution, Inc |
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IS46R16160D-6BLA2 Datasheet(HTML) 9 Page - Integrated Silicon Solution, Inc |
9 / 32 page Integrated Silicon Solution, Inc. 9 Rev. B 06/19/2012 IS43R83200D IS43/46R16160D, IS43/46R32800D PIN FUNCTIONAL DESCRIPTIONS Symbol Type Description CK,CK Input Clock:CKandCKaredifferentialclockinputs.Alladdressandcontrolinputsignalsaresampled onthecrossingofthepositiveedgeofCKandnegativeedgeofCK.Inputandoutputdatais referencedtothecrossingofCKandCK(bothdirectionsofcrossing).Internalclocksignalsare derivedfromCK/CK. CKE Input ClockEnable:CKEHIGHactivates,andCKELOWdeactivatesinternalclocksignals,anddevice inputbuffersandoutputdrivers.TakingCKELOWprovidesPRECHARGEPOWER-DOWNand SELFREFRESHoperation(allbanksidle),orACTIVEPOWERDOWN(rowACTIVEinany bank).CKEissynchronousforallfunctionsexceptforSELFREFRESHEXIT,whichisachieved asynchronously.Inputbuffers,excludingCK,CKandCKE,aredisabledduringpower-downand selfrefreshmodewhicharecontrivedforlowstandbypowerconsumption. CS Input ChipSelect:CSenables(registeredLOW)anddisables(registeredHIGH)thecommand decoder.AllcommandsaremaskedwhenCSisregisteredHIGH.CSprovidesforexternalbank selectiononsystemswithmultiplebanks.CSisconsideredpartofthecommandcode. RAS ,CAS, WE Input CommandInputs:RAS,CASandWE(alongwithCS)definethecommandbeingentered. DM:x8; LDM,UDM: x16; DM0-DM3: x32 Input InputDataMask:DMisaninputmasksignalforwritedata.InputdataismaskedwhenDMis sampledHIGHalongwiththatinputdataduringaWRITEaccess.DMissampledonbothedges ofDQS.AlthoughDMpinsareinput-only,theDMloadingmatchestheDQandDQSloading. Forx16devices,LDMcorrespondstothedataonDQ0-DQ7,UDMcorrespondstothedataon DQ8-DQ15. Forx32devices,DM0correspondstothedataonDQ0-DQ7,DM1correspondstothedataon DQ8-DQ15,DM2correspondstothedataonDQ16-DQ23,andDM3correspondstothedataon DQ24-DQ31. BA0,BA1 Input InputBankAddressInputs:BA0andBA1definetowhichbankanACTIVE,READ,WRITEor PRECHARGEcommandisbeingapplied. A[12:0] Input AddressInputs:providetherowaddressforACTIVEcommands,andthecolumnaddressand AUTOPRECHARGEbitforREAD/WRITEcommands,toselectonelocationoutofthememory arrayintherespectivebank.TheaddressinputsalsoprovidetheopcodeduringaMODE REGISTERSETcommand.A12isnotusedforx32. DQ: DQ0-DQ7:x8; DQ0-DQ15: x16 DQ0-DQ31: x32 I/O DataBus:Input/Output DQS:x8: LDQS,UDQS x16: DQS0-DQS3: x32 I/O DataStrobe:Outputwithreaddata,inputwithwritedata.Edge-alignedwithreaddata,centered withwritedata.Usedtocapturewritedata. Forx16device,LDQScorrespondstothedataonDQ0-DQ7,UDQScorrespondstothedataon DQ8-DQ15. Forx32device,DQS0correspondstothedataonDQ0-DQ7,DQS1correspondstothedataon DQ8-DQ15,DQS2correspondstothedataonDQ16-DQ23,andDQS3correspondstothedata onDQ24-DQ31. NC -- NoConnect:Shouldbeleftunconnected. VREF Supply SSTL_2referencevoltage. VDDQ Supply I/OPowerSupply. VSSQ Supply I/OGround. VDD Supply PowerSupply. VSS Supply Ground. |
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