參數(shù)資料
型號(hào): WS57C71C-45D
廠商: STMICROELECTRONICS
元件分類: PROM
英文描述: 32K X 8 UVPROM, 45 ns, CDIP28
封裝: 0.600 INCH, CERDIP-28
文件頁(yè)數(shù): 1/7頁(yè)
文件大?。?/td> 54K
代理商: WS57C71C-45D
PRODUCT SELECTION GUIDE
PARAMETER
WS57C71C-35
WS57C71C-45
WS57C71C-55
WS57C71C-70
Address Access Time (Max)
35 ns
45 ns
55 ns
70 ns
CS to Output Valid Time (Max)
15 ns
20 ns
30 ns
WS57C71C
2-55
HIGH SPEED 32K x 8 CMOS PROM/RPROM
KEY FEATURES
Ultra-Fast Access Time
Immune to Latch-UP
— 35 ns
— Up to 200 mA
Low Power Consumption
ESD Protection Exceeds 2000V
Fast Programming
Available in 300 Mil DIP and PLDCC
GENERAL DESCRIPTION
The WS57C71C is a High Performance 256K UV Erasable Electrically Re-Programmable Read Only Memory
(RPROM). It is manufactured in an advanced CMOS technology and utilizes WSI's patented self-aligned split gate
EPROM cell.
The industry standard PROM pin configuration of the WS57C71C provides an easy upgrade path from a 16K x 8
device.
This RPROM is capable of operating at speeds as fast as 35 ns address access time, which enables it to be used
directly with today's fast microprocessors and DSP processors without introducing any wait states. All inputs and
outputs are TTL compatible. The WS57C71C is a low power device even when operated at its fastest speed. The
DIP version is packaged in a 300 mil wide DIP package saving board space for the user.
VCC
A10
A11
A12
A13
A14
CS3
CS2
CS1/VPP
O7
O6
O5
O4
O3
A9
A8
A7
A6
A5
A4
A3
A2
A1
A0
O0
O1
O2
GND
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28
27
26
25
24
23
22
21
20
19
18
17
16
15
A12
A13
A14
NC
CS3
CS2
CS1/VPP
O7
O6
A6
A5
A4
A3
A2
A1
A0
NC
O0
A
7
A
8
A
9
NC
V
CC
A
10
A
11
O1 O2
NC O3 O4 O5
1
43
2
32 31 30
29
28
27
26
25
24
23
22
21
5
6
7
8
9
10
11
12
13
14 15 16 17 18 19 20
GND
TOP VIEW
Chip Carrier
CERDIP
PIN CONFIGURATION
ROW
DECODER
EPROM ARRAY
262,144 BITS
COLUMN
DECODER
SENSE
AMPLIFIERS
8
CS2
CS3
OUTPUTS
CS1/ VPP
A0 - A5
COLUMN
ADDRESSES
A6 - A14
ROW
ADDRESSES
9
BLOCK DIAGRAM
Return to Main Menu
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