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W24257AJ-8N Datasheet, PDF (1/8 Pages) Winbond – 32K X 8 High Speed CMOS Static RAM
W24257AJ-8N
32K × 8 HIGH SPEED CMOS STATIC RAM
GENERAL DESCRIPTION
The W24257AJ-8N is a high speed, low power CMOS static RAM organized as 32768 × 8 bits that
operates on a single 5-volt power supply. This device is manufactured using Winbond's high
performance CMOS technology.
FEATURES
• High speed access time: 8 nS (max.)
• Single +5V power supply
• Fully static operation
PIN CONFIGURATIONS
• All inputs and outputs directly TTL compatible
• Three-state outputs
• Available packages: 28-pin 300 mil SOJ
BLOCK DIAGRAM
A14 1
A12 2
28
VDD
27
WE
A7 3
26
A13
A6 4
25
A8
A5 5
24
A9
A4 6
23
A11
A3 7
22
OE
28-pin
A2 8
SOJ 21
A10
A1 9
20
CS
A0 10
19
I/O8
I/O1 11
18
I/O7
I/O2 12
17
I/O6
I/O3 13
VSS 14
16
I/O5
15
I/O4
VDD
VSS
A0
.
.
A14
DECODER
CORE
ARRAY
CS
OE
CONTROL
WE
I/O1
DATA I/O
.
.
I/O8
PIN DESCRIPTION
SYMBOL
DESCRIPTION
A0−A14 Address Inputs
I/O1−I/O8 Data Inputs/Outputs
CS
Chip Select Input
WE
Write Enable Input
OE
Output Enable Input
VDD
Power Supply
VSS
Ground
Publication Release Date: February 1998
-1-
Revision A2