IS42SM81600E / IS42SM16800E / IS42SM32400E
IS42RM81600E / IS42RM16800E / IS42RM32400E
16Mx8, 8Mx16, 4Mx32
128Mb Mobile Synchronous DRAM
APRIL 2011
DESCRIPTION
FEATURES
ISSI'sꢀ128MbꢀMobileꢀSynchronousꢀDRAMꢀachievesꢀhigh-
speedꢀdataꢀtransferꢀusingꢀpipelineꢀarchitecture.ꢀAllꢀinputꢀ
andꢀoutputꢀsignalsꢀreferꢀtoꢀtheꢀrisingꢀedgeꢀofꢀtheꢀclockꢀ
input.ꢀBothꢀwriteꢀandꢀreadꢀaccessesꢀtoꢀtheꢀSDRAMꢀareꢀ
burstꢀoriented.ꢀTheꢀ128MbꢀMobileꢀSynchronousꢀDRAMꢀ
isꢀdesignedꢀtoꢀminimizeꢀcurrentꢀconsumptionꢀmakingꢀitꢀ
idealꢀforꢀlow-powerꢀapplications.ꢀꢀꢀBothꢀTSOPꢀandꢀBGAꢀ
packagesꢀareꢀoffered,ꢀincludingꢀindustrialꢀgradeꢀproducts.
•ꢀ Fullyꢀsynchronous;ꢀallꢀsignalsꢀreferencedꢀtoꢀaꢀpositiveꢀ
clockꢀedge
•ꢀ Internalꢀbankꢀforꢀhidingꢀrowꢀaccessꢀandꢀprecharge
•ꢀ ProgrammableꢀCASꢀlatency:ꢀ2,ꢀ3
•ꢀ ProgrammableꢀBurstꢀLength:ꢀ1,ꢀ2,ꢀ4,ꢀ8,ꢀandꢀFullꢀPage
•ꢀ ProgrammableꢀBurstꢀSequence:
•ꢀ SequentialꢀandꢀInterleave
•ꢀ AutoꢀRefreshꢀ(CBR)
•ꢀ TCSRꢀ(TemperatureꢀCompensatedꢀSelfꢀRefresh)ꢀ
KEY TIMING PARAMETERS
•ꢀ PASRꢀ(PartialꢀArraysꢀSelfꢀRefresh):ꢀ1/16,ꢀ1/8,ꢀ1/4,ꢀ1/2,ꢀ
andꢀFullꢀ
Parameter
-6
-7
-75E
Unit
CLKꢀCycleꢀTime
CASꢀLatencyꢀ=ꢀ3
CASꢀLatencyꢀ=ꢀ2
CLKꢀFrequency
CASꢀLatencyꢀ=ꢀ3
CASꢀLatencyꢀ=ꢀ2
AccessꢀTimeꢀfromꢀCLK
CASꢀLatencyꢀ=ꢀ3
CASꢀLatencyꢀ=ꢀ2
•ꢀ DeepꢀPowerꢀDownꢀModeꢀ(DPD)
6
7
ns
ns
–
•ꢀ DriverꢀStrengthꢀControlꢀ(DS):ꢀ1/4,ꢀ1/2,ꢀandꢀFull
10
10
7.5
OPTIONS
•ꢀ Configurations:ꢀ
-ꢀ16Mꢀxꢀ8ꢀꢀ
166
100
143
100
Mhz
Mhz
–
133
-ꢀ8Mꢀxꢀ16ꢀ
-ꢀ4Mꢀxꢀ32ꢀꢀ
5.4
8
5.4
8
ns
ns
–
•ꢀ PowerꢀSupplyꢀꢀ
5.4
IS42SMxxxꢀ–ꢀVdd/Vddqꢀ=ꢀ3.3ꢀVꢀ
IS42RMxxxꢀ –ꢀVdd/Vddqꢀ=ꢀ2.5ꢀVꢀ
•ꢀ Packages:ꢀ
x8ꢀ/ꢀx16ꢀ–TSOPꢀIIꢀ(54),ꢀBGAꢀ(54)ꢀ[x16ꢀonly]ꢀ
x32ꢀ–ꢀTSOPꢀIIꢀ(86),ꢀꢀBGAꢀ(90)
•ꢀ TemperatureꢀRange:ꢀꢀ
Commercialꢀ(0°Cꢀtoꢀ+70°C)ꢀꢀ
Industrialꢀ(–40ꢀºCꢀtoꢀ85ꢀºC)
ADDRESSING TABLE
Parameter
16M x 8
4Mꢀxꢀ8ꢀxꢀ4ꢀbanks
4K/64ms
A0-A11
8M x 16
2Mꢀxꢀ16ꢀxꢀ4ꢀbanks
4K/64ms
A0-A11
4M x 32
Configuration
1Mꢀxꢀ32ꢀxꢀ4ꢀbanks
4K/64ms
A0-A11
RefreshꢀCount
RowꢀꢀAddressing
ColumnꢀAddressing
BankꢀAddressing
PrechargeꢀAddressing
A0-A9
A0-A8
A0-A7
BA0,ꢀBA1
A10
BA0,ꢀBA1
A10
BA0,ꢀBA1
A10
Copyrightꢀ©ꢀ2011ꢀIntegratedꢀSiliconꢀSolution,ꢀInc.ꢀꢀAllꢀrightsꢀreserved.ꢀꢀISSIꢀreservesꢀtheꢀrightꢀtoꢀmakeꢀchangesꢀtoꢀthisꢀspecificationꢀandꢀitsꢀproductsꢀatꢀanyꢀtimeꢀwithoutꢀnotice.ꢀꢀꢀISSIꢀassumesꢀnoꢀ
liabilityꢀarisingꢀoutꢀofꢀtheꢀapplicationꢀorꢀuseꢀofꢀanyꢀinformation,ꢀproductsꢀorꢀservicesꢀdescribedꢀherein.ꢀCustomersꢀareꢀadvisedꢀtoꢀobtainꢀtheꢀlatestꢀversionꢀofꢀthisꢀdeviceꢀspecificationꢀbeforeꢀrelyingꢀonꢀ
anyꢀpublishedꢀinformationꢀandꢀbeforeꢀplacingꢀordersꢀforꢀproducts.ꢀꢀ
IntegratedꢀSiliconꢀSolution,ꢀInc.ꢀdoesꢀnotꢀrecommendꢀtheꢀuseꢀofꢀanyꢀofꢀitsꢀproductsꢀinꢀlifeꢀsupportꢀapplicationsꢀwhereꢀtheꢀfailureꢀorꢀmalfunctionꢀofꢀtheꢀproductꢀcanꢀreasonablyꢀbeꢀex-
pectedꢀtoꢀcauseꢀfailureꢀofꢀtheꢀlifeꢀsupportꢀsystemꢀorꢀtoꢀsignificantlyꢀaffectꢀitsꢀsafetyꢀorꢀeffectiveness.ꢀProductsꢀareꢀnotꢀauthorizedꢀforꢀuseꢀinꢀsuchꢀapplicationsꢀunlessꢀIntegratedꢀSiliconꢀ
Solution,ꢀInc.ꢀreceivesꢀwrittenꢀassuranceꢀtoꢀitsꢀsatisfaction,ꢀthat:
a.)ꢀtheꢀriskꢀofꢀinjuryꢀorꢀdamageꢀhasꢀbeenꢀminimized;
b.)ꢀtheꢀuserꢀassumeꢀallꢀsuchꢀrisks;ꢀand
c.)ꢀpotentialꢀliabilityꢀofꢀIntegratedꢀSiliconꢀSolution,ꢀIncꢀisꢀadequatelyꢀprotectedꢀunderꢀtheꢀcircumstances
Integrated Silicon Solution, Inc. - www.issi.comꢀ
1
Rev. B
04/15/2011