W24257A-35 Winbond, W24257A-35 Datasheet

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W24257A-35

Manufacturer Part Number
W24257A-35
Description
32K * 8 high speed, low power CMOS static RAM
Manufacturer
Winbond
Datasheet
GENERAL DESCRIPTION
The W24257A is a high speed, low power CMOS static RAM organized as 32768
operates on a single 5-volt power supply. This device is manufactured using Winbond's high
performance CMOS technology.
FEATURES
PIN CONFIGURATIONS
High speed access time: 35 nS (max.)
Low power consumption:
Single 5V power supply
Fully static operation
Active: 350 mW (max.)
A13
V
A14
A12
A11
WE
OE
A7
A6
A5
A4
A3
A9
A8
DD
A14
A12
I/O2
I/O3
I/O1
V
A5
A7
A6
A4
A3
A2
A0
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
32K
28-DIP
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
I/O5
I/O4
V
WE
A13
A8
A9
A11
OE
A10
CS
I/O8
I/O7
I/O6
8 HIGH SPEED CMOS STATIC RAM
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 600 mil DIP,
330 mil SOP, 300 mil SOJ and standard type
one TSOP (8 mm
I/O1 I/O8
SYMBOL
A0 A14
V
V
A14
WE
OE
A0
CS
WE
CS
V
OE
V
.
.
DD
DD
SS
SS
Publication Release Date: January 1998
DECODER
CONTROL
Address Inputs
Data Inputs/Outputs
Chip Select Input
Write Enable Input
Output Enable Input
Power Supply
Ground
13.4 mm)
DESCRIPTION
DATA I/O
ARRAY
CORE
W24257A
Revision A6
8 bits that
I/O1
I/O8
.
.

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W24257A-35 Summary of contents

Page 1

... GENERAL DESCRIPTION The W24257A is a high speed, low power CMOS static RAM organized as 32768 operates on a single 5-volt power supply. This device is manufactured using Winbond's high performance CMOS technology. FEATURES High speed access time (max.) Low power consumption: Active: 350 mW (max.) ...

Page 2

... (min (max +8 -4 fmax (max.), I MHz = 0 mA, Duty = 100 (min.) IH Cycle = min., Duty = 100 -0. 5V W24257A V CURRENT SB1 UNIT MIN. TYP. MAX. -0 ...

Page 3

... SYM. CONDITIONS I/O OUT 1. pF OUTPUT R2 255 ohm (For T 3.0V 90% 90% 10% 10 W24257A MAX. UNIT CONDITIONS / mA 480 ohm 255 ohm Including Jig and Scope , ...

Page 4

... T OH SYMBOL MIN CS WHZ T OHZ W24257A W24257A-35 UNIT MAX W24257A-35 UNIT 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: January 1998 - 5 - W24257A CHZ OHZ T CHZ Revision A6 ...

Page 6

... Transition is measured 500 mV from steady state with OHZ ( WHZ ( during the write cycle pF. This parameter is guaranteed but not 100% tested W24257A T OH (2) ( ...

Page 7

... ORDERING INFORMATION ACCESS PART NO. TIME (nS) W24257A-35 35 W24257AS-35 35 W24257AJ-35 35 W24257AQ-35 35 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

... Base Plane A 1 Seating Plane Detail See Detail W24257A Dimension in Inches Dimension in mm Symbol Min. Nom. Max. Nom. Min. Max. 0.210 5. 0.010 0.25 1 0.150 0.155 0.160 3.81 3.94 4. 0.016 0.018 0.022 ...

Page 9

... £ W24257A Dimension in Inches Dimension in mm Symbol Min. Nom. Max. Min. Nom. Max. A 3.56 0.140 0.027 A 0.69 1 0.095 0.100 0.105 A 2.41 2.54 2.67 2 0.028 0.032 b 0.026 0.66 0.71 0.81 1 0.016 0.018 0.41 ...

Page 10

... Rm. 803, World Trade Square, Tower II, 123 Hoi Bun Rd., Kwun Tong, Winbond Microelectronics Corp. Kowloon, Hong Kong Winbond Systems Lab. TEL: 852-27513100 2727 N. First Street, San Jose, FAX: 852-27552064 CA 95134, U.S.A. TEL: 408-9436666 FAX: 408-5441798 - 10 - W24257A DESCRIPTION Add TSOP package Modify I data DD Modify I data DD ...

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