W26020AT-25 Winbond, W26020AT-25 Datasheet

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W26020AT-25

Manufacturer Part Number
W26020AT-25
Description
128K*16 high speed, low power CMOS static RAM
Manufacturer
Winbond
Datasheet

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Company
Part Number
Manufacturer
Quantity
Price
Part Number:
W26020AT-25
Manufacturer:
WINBOND
Quantity:
2 000
Part Number:
W26020AT-25
Manufacturer:
WB
Quantity:
2 800
GENERAL DESCRIPTION
The W26020A is a high-speed, low-power CMOS static RAM organized as 131,072
operates on a single 5-volt power supply. This device is manufactured using Winbond's high
performance CMOS technology.
The W26020A has an active low chip select, separate upper and lower byte selects, and a fast output
enable. No clock or refreshing is required. Separate byte select controls ( LB and UB ) allow
individual bytes to be written and read. LB controls I/O1-I/O8, the lower byte. UB controls I/O9
I/O16, the upper byte. This device is well suited for use in high-density, high-speed system
applications.
FEATURES
PIN CONFIGURATION
High speed access time: 20/25 nS (max.)
Low power consumption:
Single 5V power supply
Fully static operation
Active: 1.5W (max.)
No clock or refreshing
I/O2
I/O3
I/O6
I/O7
I/O8
I/O1
I/O4
I/O5
V
V
WE
CS
A16
A0
A1
A2
A3
A4
A5
A6
A7
A8
DD
SS
19
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
20
21
22
128K
43
41
40
38
36
35
34
33
30
29
25
23
44
42
39
37
32
31
28
27
26
24
16 HIGH-SPEED CMOS STATIC RAM
UB
I/O15
I/O14
I/O13
I/O12
I/O11
NC
A12
A11
A10
NC
A15
A14
A13
OE
LB
I/O16
V
V
I/O10
I/O9
A9
SS
DD
- 1 -
BLOCK DIAGRAM
PIN DESCRIPTION
All inputs and outputs directly TTL compatible
Three-state outputs
Data byte control
Available packages: 44-pin type two TSOP
I/O1 I/O16
SYMBOL
A0 A16
LB (I/O1 I/O8), UB (I/O9 I/O16)
WE
OE
UB
V
CS
LB
V
NC
V
V
A16
DD
WE
UB
CS
OE
LB
SS
DD
SS
A0
.
.
DECODER
CONTROL
Publication Release Date: July 1998
Address Inputs
Data Inputs/Outputs
Chip Select Inputs
Write Enable Input
Output Enable Input
Lower Byte Select I/O1 I/O8
Upper Byte Select I/O9 I/O16
Power Supply
Ground
No Connection
DESCRIPTION
DATA I/O
ARRAY
CORE
W26020A
16 bits that
I/O1
I/O16
Revision A3
.
.

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W26020AT-25 Summary of contents

Page 1

... GENERAL DESCRIPTION The W26020A is a high-speed, low-power CMOS static RAM organized as 131,072 operates on a single 5-volt power supply. This device is manufactured using Winbond's high performance CMOS technology. The W26020A has an active low chip select, separate upper and lower byte selects, and a fast output enable ...

Page 2

TRUTH TABLE ...

Page 3

Operating Characteristics, continued PARAMETER SYM. Operating Power I DD Supply Current Standby Power I SB Supply Current I SB1 Note: Typical characteristics are evaluated at V CAPACITANCE ( MHz) DD ...

Page 4

AC Test Loads and Waveform R1 480 ohm 5V OUTPUT 30 pF Including Jig and Scope Read Cycle ( 10 0V PARAMETER Read Cycle Time Address Access ...

Page 5

AC Characteristics, continued Write Cycle PARAMETER Write Cycle Time Chip Select to End of Write Address Valid to End of Write Address Setup Time Select to End of Write Write Pulse Width Write Recovery Time CS , ...

Page 6

Timing Waveforms, continued Read Cycle 2 (Chip Select Controlled, OE Address OUT Read Cycle 3 (Output Enable Controlled, CS Address OE D OUT = ...

Page 7

Timing Waveforms, continued Write Cycle 1 (OE Clock) Address OE UB/ OUT D IN Write Cycle 2 ( Fixed UB/ Notes: 1. During this period, I/O pins are in the output state, ...

Page 8

... PART NO. ACCESS TIME (nS) W26020AT-20 20 W26020AT-25 25 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. OPERATING ...

Page 9

PACKAGE DIMENSIONS 44-pin Standard Type Two TSOP 0.10 (0.004 W26020A Dimension in inches Dimension in mm Symbol Min. Nom. Max. ...

Page 10

... Delete 15 nS and SOJ item Winbond Electronics (H.K.) Ltd. Winbond Electronics North America Corp. Winbond Memory Lab. Rm. 803, World Trade Square, Tower II, 123 Hoi Bun Rd., Kwun Tong, Winbond Microelectronics Corp. Kowloon, Hong Kong Winbond Systems Lab. ...

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