ꢀ
IS42S83200G, IS42S16160G
IS45S83200G, IS45S16160G
32Megꢀxꢀ8,ꢀꢀ16Megꢀx16ꢀ
256MbꢀSYNCHRONOUSꢀDRAM
ꢀ
MARCHꢀ2012
OVERVIEW
FEATURES
ISSI'sꢀ256MbꢀSynchronousꢀDRAMꢀꢀachievesꢀhigh-speedꢀ
dataꢀtransferꢀusingꢀpipelineꢀarchitecture.ꢀꢀAllꢀinputsꢀandꢀ
outputsꢀsignalsꢀreferꢀꢀtoꢀtheꢀrisingꢀedgeꢀofꢀtheꢀclockꢀinput.ꢀ
Theꢀ256MbꢀSDRAMꢀisꢀorganizedꢀasꢀfollows.ꢀ
•ꢀ Clockꢀfrequency:ꢀ166,ꢀ143ꢀꢀMHz
•ꢀ Fullyꢀsynchronous;ꢀallꢀsignalsꢀreferencedꢀtoꢀaꢀ
positiveꢀclockꢀedge
•ꢀ Internalꢀbankꢀforꢀhidingꢀrowꢀaccess/precharge
•ꢀ SingleꢀPowerꢀsupply:ꢀ3.3Vꢀ+ꢀ0.3Vꢀ
•ꢀ LVTTLꢀinterface
IS42S83200Gꢀ
IS42S16160Gꢀ
8Mꢀxꢀ8ꢀxꢀ4ꢀBanksꢀ 4Mꢀx16x4ꢀBanksꢀ
54-pinꢀTSOPIIꢀ
54-ballꢀBGAꢀ
54-pinꢀTSOPII
54-ballꢀBGAꢀ
•ꢀ Programmableꢀburstꢀlengthꢀꢀ
–ꢀ(1,ꢀ2,ꢀ4,ꢀ8,ꢀfullꢀpage)
ꢀ ꢀ
•ꢀ Programmableꢀburstꢀsequence:ꢀꢀ
Sequential/Interleaveꢀ
KEYꢀTIMINGꢀPARAMETERS
Parameterꢀ
ꢀꢀꢀꢀꢀꢀꢀꢀ-6ꢀ ꢀ
-7ꢀ
ꢀ
Unit
•ꢀ AutoꢀRefreshꢀ(CBR)
•ꢀ SelfꢀRefresh
ClkꢀCycleꢀTimeꢀ
ꢀ CASꢀLatencyꢀ=ꢀ3ꢀ
ꢀ CASꢀLatencyꢀ=ꢀ2ꢀ
ꢀꢀ
ꢀ
ꢀ
ꢀ
ꢀ
7ꢀ
7.5ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀ6ꢀ
ꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀ10ꢀ
nsꢀ
ns
•ꢀ 8Kꢀrefreshꢀcyclesꢀeveryꢀ32ꢀmsꢀ(A2ꢀgrade)ꢀorꢀꢀ
64ꢀmsꢀ(commercial,ꢀindustrial,ꢀA1ꢀgrade)
ClkꢀFrequencyꢀ
ꢀ CASꢀLatencyꢀ=ꢀ3ꢀ
ꢀꢀ CASꢀLatencyꢀ=ꢀ2ꢀ
ꢀꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀ166ꢀ
ꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀ100ꢀ
143ꢀ
133ꢀ
Mhzꢀ
Mhz
•ꢀ Randomꢀcolumnꢀaddressꢀeveryꢀclockꢀcycle
•ꢀ ProgrammableꢀCASꢀlatencyꢀ(2,ꢀ3ꢀclocks)
AccessꢀTimeꢀꢀfromꢀClockꢀ
ꢀ CASꢀLatencyꢀ=ꢀ3ꢀ
ꢀ CASꢀLatencyꢀ=ꢀ2ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀ5.4ꢀ
ꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀ6.5ꢀ
5.4ꢀ
5.4ꢀ
nsꢀ
ns
•ꢀ Burstꢀread/writeꢀandꢀburstꢀread/singleꢀwriteꢀꢀ
operationsꢀcapability
•ꢀ Burstꢀterminationꢀbyꢀburstꢀstopꢀandꢀprechargeꢀ
command
ADDRESSꢀTABLE
OPTIONS
Parameter
32M x 8
16M x 16
•ꢀ Package:ꢀ
Configuration
8M x 8 x 4
banks
4M x 16 x 4
banks
54-pinꢀTSOP-IIꢀꢀ
54-ballꢀBGA
Refresh Count
Com./Ind. 8K/64ms
A1 8K/64ms
8K/64ms
8K/64ms
8K/16ms
•ꢀ OperatingꢀTemperatureꢀRange:ꢀ
Commercialꢀ(0oCꢀtoꢀ+70oC)
A2 8K/16ms
Industrialꢀ(-40oCꢀtoꢀ+85oC)
Row Addresses
A0-A12
A0-A12
A0-A8
AutomotiveꢀGradeꢀA1ꢀ(-40oCꢀtoꢀ+85oC)
AutomotiveꢀGradeꢀA2ꢀ(-40oCꢀtoꢀ+105oC)
Column Addresses
Bank Address Pins
Auto Precharge Pins
A0-A9
BA0, BA1
A10/AP
BA0, BA1
A10/AP
Copyrightꢀ©ꢀ2012ꢀIntegratedꢀSiliconꢀSolution,ꢀInc.ꢀꢀAllꢀrightsꢀreserved.ꢀꢀISSIꢀreservesꢀtheꢀrightꢀtoꢀmakeꢀchangesꢀtoꢀthisꢀspecificationꢀandꢀitsꢀproductsꢀatꢀanyꢀtimeꢀwith-
outꢀnotice.ꢀꢀꢀISSIꢀassumesꢀnoꢀliabilityꢀarisingꢀoutꢀofꢀtheꢀapplicationꢀorꢀuseꢀofꢀanyꢀinformation,ꢀproductsꢀorꢀservicesꢀdescribedꢀherein.ꢀCustomersꢀareꢀadvisedꢀtoꢀobtainꢀ
theꢀlatestꢀversionꢀofꢀthisꢀdeviceꢀspecificationꢀbeforeꢀrelyingꢀonꢀanyꢀpublishedꢀinformationꢀandꢀbeforeꢀplacingꢀordersꢀforꢀproducts.
IntegratedꢀSiliconꢀSolution,ꢀInc.ꢀdoesꢀnotꢀrecommendꢀtheꢀuseꢀofꢀanyꢀofꢀitsꢀproductsꢀinꢀlifeꢀsupportꢀapplicationsꢀwhereꢀtheꢀfailureꢀorꢀmalfunctionꢀofꢀtheꢀproductꢀcanꢀ
reasonablyꢀbeꢀexpectedꢀtoꢀcauseꢀfailureꢀofꢀtheꢀlifeꢀsupportꢀsystemꢀorꢀtoꢀsignificantlyꢀaffectꢀitsꢀsafetyꢀorꢀeffectiveness.ꢀProductsꢀareꢀnotꢀauthorizedꢀforꢀuseꢀinꢀsuchꢀap-
plicationsꢀunlessꢀIntegratedꢀSiliconꢀSolution,ꢀInc.ꢀreceivesꢀwrittenꢀassuranceꢀtoꢀitsꢀsatisfaction,ꢀthat:
a.)ꢀtheꢀriskꢀofꢀinjuryꢀorꢀdamageꢀhasꢀbeenꢀminimized;
b.)ꢀtheꢀuserꢀassumeꢀallꢀsuchꢀrisks;ꢀand
c.)ꢀpotentialꢀliabilityꢀofꢀIntegratedꢀSiliconꢀSolution,ꢀIncꢀisꢀadequatelyꢀprotectedꢀunderꢀtheꢀcircumstancesꢀ
Integrated Silicon Solution, Inc. — www.issi.comꢀ
1
Rev.ꢀ A
3/20/2012