PRODUCT SELECTION GUIDE
PARAMETER
WS57C51C-45
WS57C51C-55
WS57C51C-70
Address Access Time (Max)
45 ns
55 ns
70 ns
CS to Output Valid Time (Max)
20 ns
25 ns
30 ns
WS57C51C
V
CC
A10
A11
A12
A13
CS1/VPP
CS2
CS3
CS4
O
7
O
6
O
5
O
4
O
3
A
9
A
8
A
7
A
6
A
5
A
4
A
3
A
2
A
1
A
0
O
0
O
1
O
2
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
A
12
A
13
CS1/V
PP
CS2
CS3
CS4
NC
O
7
O
6
A
5
A
4
A
3
A
2
A
1
A
0
NC
O
0
O
1
A
6
A
7
A
8
A
9
V
CC
A
10
A
11
O
2
NC
O
3
NC
O
4
O
5
1
4 3
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
4-11
MILITARY HIGH SPEED 16K x 8 CMOS PROM/RPROM
KEY FEATURES
Ultra-Fast Access Time
Pin Compatible with Am27S51
--
45 ns
and N82HS1281
Low Power Consumption
Immune to Latch-Up
Fast Programming
--
Up to 200 mA
ESD Protection Exceeds 2000 V
GENERAL DESCRIPTION
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.
PINS
CS1/
CS2
CS3
CS4
VCC OUTPUTS
MODE
VPP
Read
VIL
VIL
VIH
VIL
VCC
DOUT
Output
Disable
VIH
X
X
X
VCC
High Z
Output
X
VIH
X
X
VCC
High Z
Disable
Output
X
X
VIL
X
VCC
High Z
Disable
Output
X
X
X
VIH
VCC
High Z
Disable
Program
VPP
VIH
X
X
VCC
DIN
Program
Verify
VIL
VIL
VIH
VIL
VCC
DOUT
MODE SELECTION
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ORDERING INFORMATION
SPEED
PACKAGE
PACKAGE
OPERATING WSI
PART NUMBER
TYPE
DRAWING
TEMPERATURE
MANUFACTURING
RANGE
PROCEDURE
WS57C51C-45CMB
45
32 Pad CLLCC
C2
Military
MIL-STD-883C
WS57C51C-45DMB
45
28 Pin CERDIP, 0.6"
D2
Military
MIL-STD-883C
WS57C51C-45TMB
45
28 Pin CERDIP, 0.3"
T2
Military
MIL-STD-883C
WS57C51C-55CMB
55
32 Pad CLLCC
C2
Military
MIL-STD-883C
WS57C51C-55DMB
55
28 Pin CERDIP, 0.6"
D2
Military
MIL-STD-883C
WS57C51C-55TMB
55
28 Pin CERDIP, 0.3"
T2
Military
MIL-STD-883C
WS57C51C
4-12
PROGRAMMING/ALGORITHMS/ERASURE/PROGRAMMERS
REFER TO
PAGE 5-1
The WS57C51C is programmed using Algorithm D shown on page 5-9.
NOTES:
9. The actual part marking will not include the initials "WS."
For complete data sheet and electrical specifications see page 2-47.
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