WS57C49C-1 STMicroelectronics, WS57C49C-1 Datasheet
WS57C49C-1
Manufacturer Part Number
WS57C49C-1
Description
MILITARY HIGH SPEED 8K x 8 CMOS PROM/RPROM
Manufacturer
STMicroelectronics
Datasheet
1.WS57C49C-1.pdf
(2 pages)
MODE SELECTION
•
•
•
The WS57C49C is a High Performance 64K 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
WS57C49C 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 WS57C49C in a windowed package is 100% tested with worst case test patterns both
before and after assembly.
The WS57C49C is configured in the standard Bipolar PROM pinout which provides an easy upgrade path for
systems which are currently using Bipolar PROMs, or its predecessor, the WS57C49B.
PRODUCT SELECTION GUIDE
Ultra-Fast Access Time
— t
— t
Low Power Consumption
Fast Programming
Read
MODE
Output
Disable
Program
Program
Verify
Address Access Time (Max)
CS to Output Valid Time (Max)
ACC
CS
MILITARY HIGH SPEED 8K x 8 CMOS PROM/RPROM
PINS
= 20 ns
= 35 ns
Return to Main Menu
PARAMETER
CS1/V PP
V PP
V IH
V IL
V IL
V CC
V CC
V CC
V CC
V CC
OUTPUTS
GENERAL DESCRIPTION
WS57C49C-35
High Z
D OUT
D OUT
D IN
35 ns
20 ns
KEY FEATURES
PIN CONFIGURATION
NC
O
A
A
A
A
A
4
3
2
1
0
0
•
•
•
•
WS57C49C-45
Pin Compatible with Bipolar PROMs
Immune to Latch-UP
— Up to 200 mA
ESD Protection Exceeds 2000 V
Available in 300 and 600 Mil DIP, CLLCC,
and Flatpack
5
6
7
8
9
10
11
O
A
12 13 14 15 16 17 18
4 3 2
1
5
45 ns
25 ns
O
A
6
2
Chip Carrier
GND
A
7
NC O
NC
1
V
28 27 26
CC
3
O
A
4
8
O
A
25
24
23
22
21
20
19
9
5
WS57C49C-55
TOP VIEW
A
CS1/V
A
A
NC
O
O
55 ns
25 ns
10
11
12
7
6
PP
GND
O
O
O
CERDIP/Flatpack
A
A
A
A
A
A
A
A
7
6
5
4
3
2
1
0
0
1
2
WS57C49C
1
2
3
4
5
6
7
8
9
10
11
12
WS57C49C-70
70 ns
25 ns
24
23
22
21
20
19
18
17
16
15
14
13
V
A
A
A 10
CS1/V
A
A
O
O
O
O
O
CC
8
9
11
12
7
6
5
4
3
4-9
PP
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WS57C49C-1 Summary of contents
Page 1
... Bipolar counterparts. A further advantage of the WS57C49C 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 WS57C49C in a windowed package is 100% tested with worst case test patterns both before and after assembly ...
Page 2
... NOTE: The actual part marking will not include the initials "WS." * SMD product. See page 4-1 for DESC SMD numbers. PROGRAMMING/ALGORITHMS/ERASURE/PROGRAMMERS The WS57C49C is programmed using Algorithm D shown on page 5-9. For complete data sheet and electrical specifications see page 2-39. Return to Main Menu PACKAGE ...