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Winbond - 32K X 8 High Speed CMOS Static RAM

Numéro de référence W24257AJ-12
Description 32K X 8 High Speed CMOS Static RAM
Fabricant Winbond 
Logo Winbond 





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W24257AJ-12 fiche technique
W24257A
32K × 8 HIGH SPEED CMOS STATIC RAM
GENERAL DESCRIPTION
The W24257A 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: 10/12/15/20 nS (max.)
Low power consumption:
Active: 400 mW (typ.)
Single +5V power supply
Fully static operation
All inputs and outputs directly TTL compatible
Three-state outputs
Available packages: 28-pin 300 mil SOJ, 330
mil SOP, skinny DIP and standard type one
TSOP (8 mm × 13.4 mm)
PIN CONFIGURATIONS
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
DIP
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
16 I/O5
V SS
14
15 I/O4
OE
A11
A9
A8
A13
WE
VDD
A14
A12
A7
A6
A5
A4
A3
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28-pin
TSOP
28 A10
27 CS
26 I/O8
25 I/O7
24 I/O6
23 I/O5
22 I/O4
21 VSS
20 I/O3
19 I/O2
18 I/O1
17 A0
16 A1
15 A2
VDD
VSS
A0
. DECODER
.
A14
CORE
ARRAY
CS
OE CONTROL
WE
DATA I/O
I/O1
.
.
I/O8
PIN DESCRIPTION
SYMBOL
DESCRIPTION
A0A14 Address Inputs
I/O1I/O8 Data Inputs/Outputs
CS Chip Select Input
WE Write Enable Input
OE Output Enable Input
VDD Power Supply
VSS Ground
Publication Release Date: May 1997
- 1 - Revision A14

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