IS61WV1288EEBLL
IS64WV1288EEBLL
256K x 8 HIGH SPEED ASYNCHRONOUS
CMOS STATIC RAM WITH ECC
ADVANCED INFORMATION
OCTOBER 2012
DESCRIPTION
FEATURES
Theꢀ ISSIꢀ IS61/64WV1288EEBLLꢀ isꢀ aꢀ ꢀ high-speed,ꢀ
1,048,576-bitꢀstaticꢀRAMsꢀorganizedꢀasꢀ131,072ꢀwordsꢀbyꢀ
8ꢀbits.ꢀItꢀisꢀfabricatedꢀusingꢀISSI'shigh-performanceCMOS
technology.ꢀThisꢀhighlyꢀreliableꢀprocessꢀcoupledꢀwithꢀinno-
vative circuit design techniques, yields high-performance
and low power consumption devices.
•ꢀ High-speedꢀaccessꢀtime:ꢀ8,ꢀ10ꢀns
•ꢀ LowꢀActiveꢀPower:ꢀ85ꢀmWꢀ(typical)
•ꢀ LowꢀStandbyꢀPower:ꢀ7ꢀmWꢀ(typical)
CMOS standby
•ꢀ Singleꢀpowerꢀsupply
•ꢀ Fullyꢀstaticꢀoperation:ꢀnoꢀclockꢀorꢀrefreshꢀ
Whenꢀ CEꢀ isꢀ HIGHꢀ (deselected),ꢀ theꢀ deviceꢀ assumesꢀ
a standby mode at which the power dissipation can be
reduced down with CMOS input levels.
required
•ꢀ Threeꢀstateꢀoutputs
•ꢀ IndustrialꢀandꢀAutomotiveꢀtemperatureꢀsupport
•ꢀ Lead-freeꢀavailable
EasyꢀmemoryꢀexpansionꢀisꢀprovidedꢀbyꢀusingꢀChipꢀEnableꢀ
andꢀOutputꢀEnableꢀinputs,ꢀCE and OE.ꢀTheꢀactiveꢀLOWꢀ
WriteꢀEnableꢀ(WE) controls both writing and reading of
the memory.
•ꢀ ErrorꢀDetectionꢀandꢀErrorꢀCorrection
TheꢀIS61/64WV1288EEBLLꢀisꢀpackagedꢀinꢀtheꢀJEDECꢀ
standardꢀ32-pinꢀSOJ,ꢀTSOP-II,ꢀsTSOP-I,ꢀandꢀ48-ballꢀBGAꢀ
(6mmx8mm).
FUNCTIONAL BLOCK DIAGRAM
ECC Array
(256Kx4)
Memory Array
(256Kx8)
A0-A16
Decoder
8
4
8
8
12
I/O Data
Circuit
ECC
IO0-7
Column I/O
/CE
/OE
/WE
Control
Circuit
Copyright © 2012 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. 00A
10/10/2012