IS65LV256AL
IS62LV256AL
32K x 8 LOW VOLTAGE
CMOS STATIC RAM
MAY 2012
FEATURES
DESCRIPTION
TheꢀISSIꢀIS62/65LV256ALꢀisꢀaꢀveryꢀhigh-speed,ꢀlowꢀpower,ꢀ
32,768-wordꢀbyꢀ8-bitꢀstaticꢀRAM.ꢀItꢀisꢀfabricatedꢀusingꢀISSI'sꢀ
high-performanceꢀCMOSꢀtechnology.ꢀThisꢀhighlyꢀreliableꢀ
processꢀcoupledꢀwithꢀinnovativeꢀcircuitꢀdesignꢀtechniques,ꢀ
yieldsꢀaccessꢀtimesꢀasꢀfastꢀasꢀ15ꢀnsꢀmaximum.
•ꢀ High-speedꢀaccessꢀtime:ꢀ20,ꢀ45ꢀns
•ꢀ Automaticꢀpower-downꢀwhenꢀchipꢀisꢀdeselected
•ꢀ CMOSꢀlowꢀpowerꢀoperation
ꢀ —ꢀ17ꢀµWꢀ(typical)ꢀCMOSꢀstandby
ꢀ —ꢀ50ꢀmWꢀ(typical)ꢀoperating
•ꢀ TTLꢀcompatibleꢀinterfaceꢀlevels
•ꢀ Singleꢀ3.3Vꢀpowerꢀsupply
WhenꢀCEꢀisꢀHIGHꢀ(deselected),ꢀtheꢀdeviceꢀassumesꢀaꢀ
standbyꢀmodeꢀatꢀwhichꢀtheꢀpowerꢀdissipationꢀisꢀreducedꢀtoꢀ
150ꢀµWꢀ(typical)ꢀwithꢀCMOSꢀinputꢀlevels.
•ꢀ Fullyꢀstaticꢀoperation:ꢀnoꢀclockꢀorꢀrefreshꢀꢀ
required
Easyꢀmemoryꢀexpansionꢀisꢀprovidedꢀbyꢀusingꢀanꢀactiveꢀ
LOWꢀChipꢀEnableꢀ(CE).ꢀTheꢀactiveꢀLOWꢀWriteꢀEnableꢀ
(WE)ꢀcontrolsꢀbothꢀwritingꢀandꢀreadingꢀofꢀtheꢀmemory.
•ꢀ Three-stateꢀoutputs
•ꢀ IndustrialꢀandꢀAutomotiveꢀtemperaturesꢀavailable
•ꢀ Lead-freeꢀavailable
TheꢀIS62/65LV256ALꢀisꢀavailableꢀinꢀtheꢀJEDECꢀstandardꢀ
28-pinꢀSOJ,ꢀ28-pinꢀSOP,ꢀandꢀtheꢀ28-pinꢀTSOPꢀ(TypeꢀI)ꢀ
package.
FUNCTIONAL BLOCK DIAGRAM
32K x 8
MEMORY ARRAY
A0-A14
DECODER
VDD
GND
I/O
DATA
COLUMN I/O
I/O0-I/O7
CIRCUIT
CE
CONTROL
CIRCUIT
OE
WE
Copyrightꢀ©ꢀ2012ꢀIntegratedꢀSiliconꢀSolution,ꢀInc.ꢀꢀAllꢀrightsꢀreserved.ꢀꢀISSIꢀreservesꢀtheꢀrightꢀtoꢀmakeꢀchangesꢀtoꢀthisꢀspecificationꢀandꢀitsꢀproductsꢀatꢀanyꢀtimeꢀwithoutꢀnotice.ꢀꢀꢀISSIꢀassumesꢀnoꢀ
liabilityꢀarisingꢀoutꢀofꢀtheꢀapplicationꢀorꢀuseꢀofꢀanyꢀinformation,ꢀproductsꢀorꢀservicesꢀdescribedꢀherein.ꢀCustomersꢀareꢀadvisedꢀtoꢀobtainꢀtheꢀlatestꢀversionꢀofꢀthisꢀdeviceꢀspecificationꢀbeforeꢀrelyingꢀonꢀ
anyꢀpublishedꢀinformationꢀandꢀbeforeꢀplacingꢀordersꢀforꢀproducts.
IntegratedꢀSiliconꢀSolution,ꢀInc.ꢀdoesꢀnotꢀrecommendꢀtheꢀuseꢀofꢀanyꢀofꢀitsꢀproductsꢀinꢀlifeꢀsupportꢀapplicationsꢀwhereꢀtheꢀfailureꢀorꢀmalfunctionꢀofꢀtheꢀproductꢀcanꢀreasonablyꢀbeꢀexpectedꢀtoꢀcauseꢀ
failureꢀofꢀtheꢀlifeꢀsupportꢀsystemꢀorꢀtoꢀsignificantlyꢀaffectꢀitsꢀsafetyꢀorꢀeffectiveness.ꢀProductsꢀareꢀnotꢀauthorizedꢀforꢀuseꢀinꢀsuchꢀapplicationsꢀunlessꢀIntegratedꢀSiliconꢀSolution,ꢀInc.ꢀreceivesꢀwrittenꢀ
assuranceꢀtoꢀitsꢀsatisfaction,ꢀthat:
a.)ꢀtheꢀriskꢀofꢀinjuryꢀorꢀdamageꢀhasꢀbeenꢀminimized;
b.)ꢀtheꢀuserꢀassumeꢀallꢀsuchꢀrisks;ꢀand
c.)ꢀpotentialꢀliabilityꢀofꢀIntegratedꢀSiliconꢀSolution,ꢀIncꢀisꢀadequatelyꢀprotectedꢀunderꢀtheꢀcircumstancesꢀꢀ
Integrated Silicon Solution, Inc. — www.issi.com — 1-800-379-4774 ꢀ
1
Rev. C
05/09/12