SGS Thomson Microelectronics WS57C51C Datasheet
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
A
10
A
11
A
12
A
13
CS1/V
PP
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
A6A7A8A9VCCA10A
11
O2 NC O3 NC O4 O
5
1
432
32 31
30
29
28
27
26
25
24
23
22
21
5
6
7
8
9
10
11
12
13
14 15 1617181920
GND
TOP VIEW
Chip Carrier CERDIP
PIN CONFIGURATION
4-11
MILITARY HIGH SPEED 16K x8 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 V
CC
OUTPUTS
MODE
V
PP
Read V
ILVILVIHVILVCC
D
OUT
Output
Disable
V
IH
XXXVCCHigh Z
Output
XVIHXXVCCHigh Z
Disable
Output
XXVILXVCCHigh Z
Disable
Output
XXXVIHV
CC
High Z
Disable
Program V
PPVIH
XXVCCD
IN
Program
Verify
V
ILVILVIHVILVCC
D
OUT
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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