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PDF ( 数据手册 , 数据表 ) W24257A-35

零件编号 W24257A-35
描述 32K X 8 High Speed CMOS Static RAM
制造商 Winbond
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W24257A-35 数据手册, 描述, 功能
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







W24257A-35 pdf, 数据表
W24257A
ORDERING INFORMATION
PART NO.
W24257AK-10
W24257AK-12
W24257AK-15
W24257AK-20
W24257AJ-10
W24257AJ-12
W24257AJ-15
W24257AJ-20
W24257AS-10
W24257AS-12
W24257AS-15
W24257AS-20
W24257AQ-10
W24257AQ-12
W24257AQ-15
W24257AQ-20
ACCESS
TIME
(nS)
10
12
15
20
10
12
15
20
10
12
15
20
10
12
15
20
OPERATING
CURRENT
MAX. (mA)
170
160
150
140
170
160
150
140
170
160
150
140
170
160
150
140
STANDBY
CURRENT
MAX. (mA)
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
PACKAGE
300 mil skinny DIP
300 mil skinny DIP
300 mil skinny DIP
300 mil skinny DIP
300 mil SOJ
300 mil SOJ
300 mil SOJ
300 mil SOJ
330 mil SOP
330 mil SOP
330 mil SOP
330 mil SOP
Standard type one TSOP
Standard type one TSOP
Standard type one TSOP
Standard type one TSOP
Notes:
1. Winbond reserves the right to make changes to its products without prior notice.
2. Purchasers are responsible for performing appropriate quality assurance testing on products intended for use in
applications where personal injury might occur as a consequence of product failure.
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