IS61WV20488ALL
IS61WV20488BLL
IS64WV20488BLL
®
ISSI
PRELIMINARYINFORMATION
JANUARY2006
2M x 8 HIGH-SPEED CMOS STATIC RAM
FEATURES
DESCRIPTION
• High-speed access times:
8, 10, 20 ns
• High-performance, low-power CMOS process
• Multiple center power and ground pins for
greater noise immunity
• Easy memory expansion with CE and OE
TheISSIIS61WV20488ALL/BLLandIS64WV20488BLL
are very high-speed, low power, 2M-word by 8-bit CMOS
static RAM. The IS61WV20488ALL/BLL and
IS64WV20488BLLarefabricatedusingISSI'shigh-
performance CMOS technology. This highly reliable
process coupled with innovative circuit design tech-
niques, yields higher performance and low power con-
sumption devices.
options
• CE power-down
• Fully static operation: no clock or refresh
required
When CE is HIGH (deselected), the device assumes a
standby mode at which the power dissipation can be
reduced down with CMOS input levels.
• TTL compatible inputs and outputs
• Single power supply
TheIS61WV20488ALL/BLLandIS64WV20488BLL
operate from a single power supply and all inputs are
TTL-compatible.
– VDD 1.65V to 2.2V (IS61WV20488ALL)
speed = 20ns for Vcc = 1.65V to 2.2V
– VDD 2.4V to 3.6V (IS61/64WV20488BLL)
speed = 10ns for Vcc = 2.4V to 3.6V
speed = 8ns for Vcc = 3.3V + 5%
• Packages available:
TheIS61WV20488ALL/BLLandIS64WV20488BLLare
available in 48 ball mini BGA and 44-pin TSOP (Type II)
packages.
–
48-ball miniBGA (9mm x 11mm)
– 44-pin TSOP (Type II)
• Industrial and Automotive Temperature Support
• Lead-free available
FUNCTIONAL BLOCK DIAGRAM
2M X 8
MEMORY ARRAY
A0-A20
DECODER
VDD
GND
I/O
DATA
COLUMN I/O
I/O0-I/O7
CIRCUIT
CE
OE
WE
CONTROL
CIRCUIT
Copyright © 2006 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. — www.issi.com — 1-800-379-4774
1
Rev. 00C
01/09/06