®
IS64WV6416BLL
IS61WV6416BLL
Long-term Support
World Class Quality
64K x 16 HIGH-SPEED CMOS STATIC RAM
APRIL 2019
FEATURES
DESCRIPTION
TheꢀISSIꢀIS61/64WV6416BLLꢀisꢀaꢀhigh-speed,ꢀ1,048,576-
bitꢀ staticꢀ RAMꢀ organizedꢀ asꢀ 65,536ꢀ wordsꢀ byꢀ 16ꢀ bits.ꢀ
It is fabricated using ISSI'sꢀ high-performanceꢀ CMOSꢀ
technology.ꢀThisꢀhighlyꢀreliableꢀprocessꢀcoupledꢀwithꢀin-
novative circuit design techniques, yields access times as
fast as 12ns (3.3V + 10%)ꢀandꢀ15nsꢀ(2.5V-3.6V)ꢀwithꢀlowꢀ
power consumption.
•ꢀ High-speedꢀaccessꢀtime:ꢀ
12 ns: 3.3V + 10%
ꢀ 15ꢀns:ꢀ2.5V-3.6Vꢀ
•ꢀ CMOSꢀlowꢀpowerꢀoperation:
50 mW (typical) operating
25 µW (typical) standby
•ꢀ TTLꢀcompatibleꢀinterfaceꢀlevels
When CEꢀ isꢀ HIGHꢀ (deselected),ꢀ theꢀ deviceꢀ assumesꢀ
a standby mode at which the power dissipation can be
reducedꢀdownꢀwithꢀCMOSꢀinputꢀlevels.
•ꢀ Fullyꢀstaticꢀoperation:ꢀnoꢀclockꢀorꢀrefreshꢀ
required
•ꢀ Threeꢀstateꢀoutputs
EasymemoryexpansionisprovidedbyusingChipEnable
andꢀOutputꢀEnableꢀinputs,ꢀCE and OE.ꢀTheꢀactiveꢀLOWꢀ
Write Enable (WE) controls both writing and reading of the
memory.ꢀAꢀdataꢀbyteꢀallowsꢀUpperꢀByteꢀ(UB)ꢀandꢀLowerꢀ
Byteꢀ(LB) access.
•ꢀ Dataꢀcontrolꢀforꢀupperꢀandꢀlowerꢀbytes
•ꢀ AutomotiveꢀTemperatureꢀAvailable
•ꢀ Lead-freeꢀavailable
TheꢀIS61/64WV6416BLLꢀisꢀpackagedꢀinꢀtheꢀJEDECꢀstan-
dardꢀꢀ44-pinꢀTSOP-II,ꢀ44-pinꢀ400-milꢀSOJ,ꢀandꢀ48-pinꢀminiꢀ
BGAꢀ(6mmꢀxꢀ8mm).
FUNCTIONAL BLOCK DIAGRAM
64K x 16
MEMORY ARRAY
A0-A15
DECODER
V
DD
GND
I/O0-I/O7
Lower Byte
I/O
DATA
COLUMN I/O
CIRCUIT
I/O8-I/O15
Upper Byte
CE
OE
WE
CONTROL
CIRCUIT
UB
LB
Copyright © 2019 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 latest 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 reasonably 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 — 1-800-379-4774
1
Rev. C1
04/01/2019