W24L257A WINBOND [Winbond], W24L257A Datasheet

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W24L257A

Manufacturer Part Number
W24L257A
Description
32K X 8 High Speed CMOS Static RAM
Manufacturer
WINBOND [Winbond]
Datasheet

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Part Number
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Quantity
Price
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GENERAL DESCRIPTION
The W24L257A is a high-speed, low-power CMOS static RAM organized as 32768
operates on a single 3.3-volt power supply. This device is manufactured using Winbond's high
performance CMOS technology.
FEATURES
PIN CONFIGURATION
High-speed access time: 12/15/20 nS (max.)
Low-power consumption:
Single 3.3V power supply
Fully static operation
Active: 200 mW (typ.)
V
A14
A12
WE
A11
A13
OE
A7
A6
A5
A4
A3
A9
A8
DD
A12
I/O2
I/O3
A14
I/O1
V
A7
A6
A5
A4
A0
A3
A2
SS
A1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28-DIP
32K
28-pin
TSOP
28
27
26
25
24
23
22
21
20
19
18
17
16
15
28
27
26
25
24
23
22
21
20
19
18
17
16
15
8 HIGH-SPEED CMOS STATIC RAM
V
A13
OE
A10
CS
I/O8
I/O7
I/O6
I/O5
I/O4
WE
A8
A9
A11
DD
A10
CS
I/O8
I/O7
I/O6
I/O5
I/O4
V
I/O3
I/O2
I/O1
A0
A1
A2
SS
- 1 -
BLOCK DIAGRAM
PIN DESCRIPTION
All inputs and outputs directly TTL compatible
Three-state outputs
Available packages: 28-pin 300 mil SOJ,
skinny DIP and standard type one TSOP
(8 mm
I/O1 I/O8
SYMBOL
A0 A14
V
V
WE
OE
CS
DD
SS
A14
CS
V
V
A0
OE
WE
.
.
DD
SS
Publication Release Date: December 1996
13.4 mm)
DECODER
CONTROL
Address Inputs
Data Inputs/Outputs
Chip Select Input
Write Enable Input
Output Enable Input
Power Supply
Ground
DESCRIPTION
DATA I/O
CORE
ARRAY
ARRAY
W24L257A
I/O1
I/O8
.
.
Revision A5
8 bits that

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W24L257A Summary of contents

Page 1

... GENERAL DESCRIPTION The W24L257A is a high-speed, low-power CMOS static RAM organized as 32768 operates on a single 3.3-volt power supply. This device is manufactured using Winbond's high performance CMOS technology. FEATURES High-speed access time: 12/15/20 nS (max.) Low-power consumption: Active: 200 mW (typ.) Single 3.3V power supply ...

Page 2

... IH (min (min + (max.), Cycle = min. Duty = 100 Cycle = min. IH (min.), Duty = 100 -0. 3.3V W24L257A V CURRENT SB1 RATING UNIT -0.5 to +4.6 +0.5 DD 1.0 -65 to +150 0 to +70 MIN TYP MAX. ...

Page 3

... SYM. CONDITIONS I/O OUT 1. pF OUTPUT R2 350 ohm (For T 3.0V 90% 90% 10% 10 W24L257A MAX. UNIT CONDITIONS / mA 320 ohm 3. 350 ohm Including Jig and Scope ...

Page 4

... WHZ OHZ W24L257A W24L257A-20 UNIT MAX. MIN. MAX W24L257A-20 UNIT MAX. MIN. MAX ...

Page 5

... Controlled) Address D OUT Read Cycle 2 (Chip Select Controlled OUT Read Cycle 3 (Output Enable Controlled) Address OUT ACS T CLZ AOE T OLZ T ACS T CLZ Publication Release Date: December 1996 - 5 - W24L257A CHZ OHZ T CHZ Revision A5 ...

Page 6

... Transition is measured 500 mV from steady state with OHZ (1, WHZ ( during the write cycle pF. This parameter is guaranteed but not 100% tested W24L257A T OH (2) ( ...

Page 7

... W24L257AK-20 20 W24L257AJ-12 12 W24L257AJ-15 15 W24L257AJ-20 20 W24L257AQ-12 12 W24L257AQ-15 15 W24L257AQ-20 20 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. ...

Page 8

... Seating Plane Base Plane A 1 Mounting Plane £ W24L257A Dimension in Inches Dimension in mm Symbol Min. Nom. Nom. Max. Min. Max. 0.175 4. 0.010 0. 0.125 0.130 0.135 3.18 3.30 3. 0.016 0.018 0.022 0.41 ...

Page 9

... Note: All data and specifications are subject to change without notice Winbond Electronics (H.K.) Ltd. Rm. 803, World Trade Square, Tower II, 123 Hoi Bun Rd., Kwun Tong, Kowloon, Hong Kong TEL: 852-27513100 FAX: 852-27552064 - 9 - W24L257A Dimension In Inches Dimension In mm Symbol Min. Nom. Max. Min. Nom. Max. A 0.047 1. 0.006 0.002 ...

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