IS61WV51216EDALL
IS61/64WV51216EDBLL
512K x 16 HIGH-SPEED ASYNCHRONOUS
CMOS STATIC RAM WITH ECC
FEBRUARY 2013
FEATURES
DESCRIPTION
•ꢀ High-speedꢀaccessꢀtimes:ꢀ8,ꢀ10,ꢀ20ꢀns
•ꢀ High-performance,ꢀlow-powerꢀCMOSꢀprocess
•ꢀ Multipleꢀcenterꢀpowerꢀandꢀgroundꢀpinsꢀforꢀgreaterꢀ
noise immunity
•ꢀ Easy memory expansion with CE and OE options
•ꢀ CE power-down
TheꢀISSIꢀꢀIS61WV51216EDALLꢀandꢀ
IS61/64WV51216EDBLLꢀareꢀhigh-speed,ꢀ8M-bitꢀstaticꢀ
RAMsꢀorganizedꢀasꢀ512Kꢀwordsꢀbyꢀ16ꢀbits.ꢀItꢀisꢀfabri-
cated using ISSI'sꢀhigh-performanceꢀCMOSꢀtechnology.ꢀ
Thisꢀhighlyꢀreliableꢀprocessꢀcoupledꢀwithꢀinnovativeꢀ
circuit design techniques, yields high-performance and
low power consumption devices.
•ꢀ Fullyꢀstaticꢀoperation:ꢀnoꢀclockꢀorꢀrefreshꢀ
When CEꢀisꢀHIGHꢀ(deselected),ꢀtheꢀdeviceꢀassumesꢀ
a standby mode at which the power dissipation can be
reducedꢀdownꢀwithꢀCMOSꢀinputꢀlevels.
required
•ꢀ TTLꢀcompatibleꢀinputsꢀandꢀoutputs
•ꢀ SingleꢀPowerꢀSupply
– Vddꢀ=ꢀ1.65Vꢀtoꢀ2.2Vꢀ(IS61WV51216EDALL)
– Vddꢀ=ꢀ2.4Vꢀtoꢀ3.6Vꢀ(IS61/64WV51216EDBLL)
•ꢀ Packagesꢀavailable:
Easy memory expansion is provided by using Chip En-
ableꢀandꢀOutputꢀEnableꢀinputs,ꢀCE and OE.ꢀTheꢀactiveꢀ
LOWꢀWriteꢀEnableꢀ(WE) controls both writing and read-
ing of the memory. A data byte allows Upper Byte (UB)
andꢀLowerꢀByteꢀ(LB) access.
–
ꢀ48-ballꢀminiBGAꢀꢀ(6mmꢀxꢀ8mm)
ꢀ –ꢀꢀ44-pinꢀTSOPꢀ(TypeꢀII)ꢀ
•ꢀ IndustrialꢀandꢀAutomotiveꢀTemperatureꢀSupport
•ꢀ Lead-freeꢀavailable
•ꢀ Dataꢀcontrolꢀforꢀupperꢀandꢀlowerꢀbytes
TheꢀdeviceꢀisꢀpackagedꢀinꢀtheꢀJEDECꢀstandardꢀ44-pinꢀ
TSOPꢀTypeꢀIIꢀandꢀ48-pinꢀMiniꢀBGAꢀ(6mmꢀxꢀ8mm).
FUNCTIONAL BLOCK DIAGRAM
Memory
Lower IO
Array-
Memory
Upper IO
Array-
A0-A18
ECC
Array-
512K
x4
ECC
Array-
512K
x4
Decoder
512Kx8
512Kx8
8
4
8
4
8
8
8
8
12
12
IO0-7
ECC
ECC
I/O Data
Circuit
Column I/O
IO8-15
/CE
/OE
/WE
/UB
/LB
Control
Circuit
Copyright © 2013 Integrated Silicon Solution, Inc. All rights reserved. ISSI reserves the right to make changes to this specification and its products at any time without
notice. ISSI assumes no liability arising out of the application or use of any information, products or services described herein. Customers are advised to obtain the lat-
est version of this device specification before relying on any published information and before placing orders for products.
Integrated Silicon Solution, Inc. does not recommend the use of any of its products in life support applications where the failure or malfunction of the product can reason-
ably be expected to cause failure of the life support system or to significantly affect its safety or effectiveness. Products are not authorized for use in such applications
unless Integrated Silicon Solution, Inc. receives written assurance to its satisfaction, that:
a.) the risk of injury or damage has been minimized;
b.) the user assume all such risks; and
c.) potential liability of Integrated Silicon Solution, Inc is adequately protected under the circumstances
Integrated Silicon Solution, Inc. — www.issi.com
1
Rev. A
02/20/2013