Integrated Silicon Solution, Inc. — www.issi.com 1
Rev. E
07/20/2015
Copyright © 2015 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
IS65C256AL
IS62C256AL
FEATURES
• Accesstime:25ns,45ns
• Lowactivepower:200mW(typical)
• Lowstandbypower
—150µW(typical)CMOSstandby
—15mW(typical)operating
• Fullystaticoperation:noclockorrefresh
required
• TTLcompatibleinputsandoutputs
• Single5Vpowersupply
• Lead-freeavailable
• IndustrialandAutomotivetemperaturesavailable
DESCRIPTION
TheISSIIS62C256AL/IS65C256ALisalowpower,32,768
word by 8-bit CMOS static RAM. It is fabricated using
ISSI'shigh-performance,lowpowerCMOStechnology.
When CE is HIGH (deselected), the device assumes
a standby mode at which the power dissipation can be
reduceddownto150µW(typical)atCMOSinputlevels.
Easy memory expansion is provided by using an active
LOWChipSelect(CE)inputandanactiveLOWOutput
Enable(OE)input.TheactiveLOWWrite Enable (WE)
controls both writing and reading of the memory.
TheIS62C256AL/IS65C256ALispincompatiblewithother
32Kx8SRAMsinplasticSOPorTSOP(TypeI)package.
FUNCTIONAL BLOCK DIAGRAM
A0-A14
CE
OE
WE
32K X 8
MEMORY ARRAY
DECODER
COLUMN I/O
CONTROL
CIRCUIT
GND
VDD
I/O
DATA
CIRCUIT
I/O0-I/O7
32K x 8 LOW POWER CMOS STATIC RAM
JULY 2015