IS62VV25616L Datasheet, PDF (1/10 Pages) Integrated Silicon Solution, Inc – 256K x 16 LOW VOLTAGE, 1.8V ULTRA LOW POWER CMOS STATIC RAM

IS62VV25616LL
256K x 16 LOW VOLTAGE, 1.8V ULTRA
LOW POWER CMOS STATIC RAM
ISSI^®
AUGUST 2002
FEATURES
• High-speed access time: 70, 85, ns
• CMOS low power operation
– 36 mW (typical) operating
– 9 µW (typical) CMOS standby
• Single 1.7V- 2.25 VDD power supply
• Fully static operation: no clock or refresh
required
• Three state outputs
• Data control for upper and lower bytes
• Industrial temperature available
• Available in the 44-pin TSOP (Type II) and
48-pin mini BGA (7.2mm x 8.7mm)
FUNCTIONAL BLOCK DIAGRAM
DESCRIPTION
The ISSI IS62VV25616LL is a high-speed, 4,194,304 bit
static RAMs organized as 262,144 words by 16 bits. They
are fabricated using ISSI's high-performance CMOS
technology. This highly reliable process coupled with
innovative circuit design techniques, yields high-
performance and low power consumption devices.
For the IS62VV25616LL, when CE is HIGH (deselected)
or CE is low and both LB and UB are HIGH, 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 IS62VV25616LL is packaged in the JEDEC standard
44-pin TSOP (Type II) and 48-pin mini BGA (7.2mm x 8.7mm).
A0-A17
DECODER
256K x 16
MEMORY ARRAY
VDD
GND
I/O0-I/O7
Lower Byte
I/O8-I/O15
Upper Byte
I/O
DATA
CIRCUIT
COLUMN I/O
CE
OE
WE
CONTROL
CIRCUIT
UB
LB
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
08/07/02