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參數(shù)資料
| 型號： | CY7C282A |
| 廠商： | Cypress Semiconductor Corp. |
| 英文描述： | 1K x 8 PROM(1K x 8 PROM) |
| 中文描述： | 每1000 × 8胎膜早破（PROM的每1000 × 8） |
| 文件頁數(shù)： | 1/9頁 |
| 文件大?。?/td> | 239K |
| 代理商： | CY7C282A |
1K x 8 PROM
CY7C281A
CY7C282A
Cypress Semiconductor Corporation
3901 North First Street
San Jose
CA 95134
408-943-2600
December 1992 – Revised December 1994
1CY7C282A
Features
CMOS for optimum speed/power
High speed
—25 ns (commercial)
—30 ns (military)
Low power
—495 mW (commercial)
—660 mW (military)
EPROM technology 100% programmable
Slim 300-mil or standard 600-mil DIP or 28-pin LCC
5V
±
10% V
CC
, commercial and military
TTL-compatible I/O
Direct replacement for bipolar PROMs
Capable of withstanding >2001V static discharge
Functional Description
The CY7C281A and CY7C282A are high-performance
1024-word by 8-bit CMOS PROMs. They are functionally iden-
tical, but are packaged in 300-mil and 600-mil-wide packages
respectively. The CY7C281A is also available in a 28-pin lead-
less chip carrier. The memory cells utilize proven EPROM
floating-gate technology and byte-wide intelligent program-
ming algorithms.
The CY7C281A and CY7C282A are plug-in replacements for
bipolar devices and offer the advantages of lower power, su-
perior performance, and programming yield. The EPROM cell
requires only 12.5V for the super voltage, and low current re-
quirements allow for gang programming. The EPROM cells
allow each memory location to be tested 100% because each
location is written into, erased, and repeatedly exercised prior
to encapsulation. Each PROM is also tested for AC perfor-
mance to guarantee that after customer programming, the
product will meet DC and AC specification limits.
Reading is accomplished by placing an active LOW signal on
CS
1
and CS
2
, and active HIGH signals on CS
3
and CS
4
. The
contents of the memory location addressed by the address
lines (A
0
A
9
) will become available on the output lines (O
0
O
7
).
Selection Guide
7C281A-25
7C282A-25
25
100
7C281A-30
7C282A-30
30
100
120
7C281A-45
7C282A-45
45
90
120
Maximum Access Time (ns)
Maximum Operating
Current (mA)
Commercial
Military
LogicBlockDiagram
Pin Configurations
C281A-1
1
2
3
4
5
6
7
8
9
10
11
12
16
15
17
18
19
20
24
23
22
21
13
14
A8
A9
CS1
CS2
CS3
CS4
A7
A6
A5
A4
A3
A2
A1
A0
O0
O1
O2
GND
VCC
O7
O6
O5
O4
O3
C281A-2
C281A-3
A9
A8
A7
A6
A5
A4
A3
A2
A1
A0
O7
O6
O5
O4
O3
O2
O1
O0
CS1
CS2
CS3
CS4
COLUMN
DECODER
28
4
5
6
7
8
9
10
1112
3 2 1
27
1314151617
26
25
24
23
22
21
20
19
O0
18
NC
A0
A4
A3
A2
O7
O6
CS1
CS2
CS3
NC
DIP
LCC/PLCC
Top View
Top View
7C281A
7C282A
7C281A
ROW
DECODER
PROGRAMMABLE
ARRAY
MULTIPLEXER
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