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WS57C256F-45P

更新时间： 2024-09-29 22:41:27
品牌 Logo 应用领域
意法半导体 - STMICROELECTRONICS 可编程只读存储器电动程控只读存储器
页数 文件大小 规格书
5页 51K
描述
HIGH SPEED 32K x 8 CMOS EPROM

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中文翻译

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WS57C256F-45P 数据手册

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WS57C256F  
HIGH SPEED 32K x 8 CMOS EPROM  
KEY FEATURES  
• Fast Access Time  
• Immune to Latch-UP  
— t  
= 35 ns  
— Up to 200 mA  
ACC  
— t  
= 35 ns  
• ESD Protection Exceeds 2000 Volts  
• Available in 300 Mil DIP and PLDCC  
• DESC SMD No. 5962-86063  
CE  
• Low Power Consumption  
— 200 µA Standby I  
CC  
GENERAL DESCRIPTION  
The WS57C256F is a High Performance 32K x 8 UV Erasable EPROM. It is manufactured using an advanced  
CMOS process technology enabling it to operate at speeds as fast as 35 ns Address Access Time (t ) and 35 ns  
ACC  
Chip Enable Time (t ). It was designed utilizing WSI's patented self-aligned split gate EPROM cell, resulting in a  
CE  
low power device with a very cost effective die size. The low standby power capability of this 256 K product (200 µA  
in a CMOS interface environment) is especially attractive.  
This product, with its high speed capability, is particularly appropriate for use with today's fast DSP processors and  
high-clock-rate Microprocessors. The WS57C256F's 35 ns speed enables these advanced processors to operate  
without introducing any undesirable wait states. The WS57C256F is also ideal for use in modem applications, and is  
recommended for use in these applications by the leading modem chip set manufacturer.  
The WS57C256F is available in a variety of package types including the space saving 300 Mil DIP, the surface  
mount PLDCC, and other windowed and non-windowed options. And its standard JEDEC EPROM pinouts provide  
for automatic upgrade density paths for current 64K and 128K EPROM users.  
PIN CONFIGURATION  
MODE SELECTION  
PINS  
CE/  
PGM  
OE  
A
A
V
V
OUTPUTS  
TOP VIEW  
9
0
PP  
CC  
MODE  
Chip Carrier  
CERDIP  
Read  
V
V
X
X
V
V
D
IL  
IL  
CC CC  
OUT  
Output  
Disable  
1
2
3
4
5
6
7
8
9
28  
27  
26  
25  
24  
23  
22  
21  
20  
V
V
A
A
A
A
A
X
V
X
X
V
V
V
High Z  
High Z  
PP  
CC  
14  
13  
8
IH  
CC CC  
A
12  
4
3
2
30  
32 31  
1
A
A
A
A
A
A
A
A
A
A
A
7
6
5
4
3
2
1
0
0
1
2
5
29  
6
5
4
3
2
1
0
Standby  
Program  
V
X
X
X
X
X
V
8
IH  
CC CC  
A
A
A
A
A
A
A
6
28  
27  
26  
25  
24  
23  
22  
21  
9
2
9
V
V
V
V
D
7
11  
IL  
IH  
PP  
PP  
CC  
CC  
IN  
11  
NC  
8
OE  
A
Program  
Verify  
2
2
OE  
9
X
V
X
X
X
X
V
V
V
D
IL  
OUT  
10  
A
10  
11  
12  
13  
10  
CE/PGM  
CE/PGM  
Program  
Inhibit  
10  
11  
12  
13  
14  
19  
18  
17  
16  
15  
O
7
V
V
V
V
High Z  
NC  
O
7
O
IH  
IH  
PP  
CC  
O
O
O
O
6
O
O
0
6
5
4
14 15 16  
18  
20  
17  
19  
O
2
2
V
V
V
V
V
23 H  
IL  
IL  
H
IL  
CC CC  
O
4
O
3
Signature  
GND  
5
3
O
O
NC O  
O
4 5  
V
V
V
V
V
V
EO H  
1
2
3
IL  
IL  
H
IH  
CC CC  
NOTES:  
1. X can be V or V  
.
4. Manufacturer Signature.  
5. Device Signature.  
IL  
IH  
2. V = V = 12.75 ± 0.25 V.  
IH  
PP  
3. A1 – A8, A10 – A14 = V .  
IL  
PRODUCT SELECTION GUIDE  
PARAMETER  
WS57C256F-35  
WS57C256F-45  
45 ns  
WS57C256F-55  
55 ns  
WS57C256F-70  
70 ns  
Address Access Time (Max)  
Output Enable Time (Max)  
35 ns  
15 ns  
20 ns  
25 ns  
30 ns  
3-13  
Return to Main Menu  
12345

中文翻译

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