IS61LV25616L Datasheet, PDF (1/11 Pages) Integrated Silicon Solution, Inc – 256K x 16 HIGH SPEED ASYNCHRONOUS CMOS STATIC RAM WITH 3.3V SUPPLY

IS61LV25616L
ISSI ^®
256K x 16 HIGH SPEED ASYNCHRONOUS
CMOS STATIC RAM WITH 3.3V SUPPLY
JUNE 2002
FEATURES
• High-speed access time:
— 10, 12, and 15 ns
• Low Active Power
— Less than 90mA (typ.) Active Current
• Low standby power:
— Less than 1 mA (typ.) CMOS standby
• TTL compatible interface levels
• Single 3.3V power supply
• Fully static operation: no clock or refresh
required
• Three state outputs
• Data control for upper and lower bytes
• Industrial temperature available
FUNCTIONAL BLOCK DIAGRAM
DESCRIPTION
The ISSI IS61LV25616L is a high-speed, 4,194,304-bit
static RAM organized as 262,144 words by 16 bits. It is
fabricated using ISSI's high-performance CMOS technol-
ogy. This highly reliable process coupled with innovative
circuit design techniques, yields high-performance and low
power consumption devices.
When CE is HIGH (deselected), the device assumes a
standby mode at which the power dissipation can be
reduced down with CMOS input levels.
Easy memory expansion is provided by using Chip Enable
and Output Enable inputs, CE and OE. The active LOW
Write Enable (WE) controls both writing and reading of the
memory.A data byte allows Upper Byte (UB) and Lower
Byte (LB) access.
The IS61LV25616L is packaged in the JEDEC standard
44-pin 400-mil SOJ, 44-pin TSOP Type II, 44-pin LQFP and
48-pin Mini BGA (8mm x 10mm).
A0-A17
DECODER
VCC
GND
I/O0-I/O7
Lower Byte
I/O8-I/O15
Upper Byte
CE
OE
WE
UB
LB
I/O
DATA
CIRCUIT
CONTROL
CIRCUIT
256K x 16
MEMORY ARRAY
COLUMN I/O
Copyright © 2002 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. B
06/28/02