MODE SELECTION
•
•
•
The WS57C51C is a High Performance 128K UV Erasable Electrically Re-Programmable Read Only Memory
(RPROM). It is manufactured in an advanced CMOS technology which enables it to operate at Bipolar PROM
speeds while consuming only 25% of the power required by its Bipolar counterparts. A further advantage of the
WS57C51C over Bipolar PROM devices is the fact that it utilizes a proven EPROM technology. This enables the
entire memory array to be tested for switching characteristics and functionality after assembly. Unlike devices which
cannot be erased, every WS5751C in a windowed package is 100% tested with worst case test patterns both
before and after assembly.
The WS57C51C provides a low power alternative to those designs which are committed to a Bipolar PROM
footprint. It is a direct drop-in replacement for a Bipolar PROM of the same architecture (16K x 8). No software,
hardware or layout changes need be performed.
PRODUCT SELECTION GUIDE
MODE
Ultra-Fast Access Time
—
Low Power Consumption
Fast Programming
Disable
Program
Program
Verify
Read
Output
Disable
Output
Disable
Output
Disable
Output
Address Access Time (Max)
CS to Output Valid Time (Max)
45 ns
MILITARY HIGH SPEED 16K x 8 CMOS PROM/RPROM
PINS CS1/
Return to Main Menu
PARAMETER
V PP
V PP
V IH
V IL
V IL
X
X
X
CS2
V IH
V IH
V IL
V IL
X
X
X
CS3
V IH
V IH
V IL
X
X
X
X
CS4
V IH
V IL
V IL
X
X
X
X
V CC
V CC
V CC
V CC
V CC
V CC
V CC
V CC
GENERAL DESCRIPTION
OUTPUTS
High Z
High Z
High Z
High Z
D OUT
D OUT
D IN
WS57C51C-45
KEY FEATURES
45 ns
20 ns
PIN CONFIGURATION
NC
O
O
A
A
A
A
A
A
•
•
•
5
4
3
2
1
0
0
1
Pin Compatible with Am27S51
and N82HS1281
Immune to Latch-Up
—
ESD Protection Exceeds 2000 V
5
6
7
8
9
10
11
12
13
14 15 16 17 18 19 20
O
Up to 200 mA
Chip Carrier
4 3 2
2
NC
O
WS57C51C-55
1
3
32 31 30
NC O
55 ns
25 ns
4
O
29
28
27
26
25
24
23
22
21
5
TOP VIEW
A
A
CS1/V
CS2
CS3
CS4
NC
O
O
12
13
7
6
PP
GND
O
O
O
A
A
A
A
A
A
A
A
A
A
WS57C51C
9
8
7
6
5
4
3
2
1
0
0
1
2
WS57C51C-70
CERDIP
1
2
3
4
5
6
7
8
9
10
11
12
13
14
70 ns
30 ns
28
27
26
25
24
23
22
21
20
19
18
17
16
15
V
A 10
A 11
A 12
A 13
CS1/V PP
CS2
CS3
CS4
O
O
O
O
O
CC
7
6
5
4
3
4-11