PRODUCT SELECTION GUIDE
PARAMETER WS57C128FB-45 WS57C128FB-55 WS57C128FB-70
Address Access Time (Max) 45 ns 55 ns 70 ns
Chip Select Time (Max) 45 ns 55 ns 70 ns
Output Enable Time (Max) 25 ns 25 ns 25 ns
WS57C128FB
VCC
PGM
A13
A8
A9
A11
OE
A10
CE
O7
O6
O5
O4
O3
VPP
A12
A7
A6
A5
A4
A3
A2
A1
A0
O0
O1
O2
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
A8
A9
A11
NC
OE
A10
CE
O7
O6
A6
A5
A4
A3
A2
A1
A0
NC
O0
A7
A12
VPP
NC
VCC
PGM
A13
O1 O2 NC O3 O4 O5
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 16 17 18 19 20
GND
TOP VIEW
Chip Carrier CERDIP
PIN CONFIGURATION
4-15
MILITARY HIGH SPEED 16K
x
8 CMOS EPROM
KEY FEATURES
•Ultra-Fast Access Time •Standard EPROM Pinout
— 45 ns •DIP and Surface Mount Packaging
•Low Power Consumption Available
•EPI Processing
— Latch-up Immunity Up to 200 mA
GENERAL DESCRIPTION
The WS57C128FB is a High Performance 128K UV Erasable Electrically Programmable Read Only Memory. It is
manufactured with an advanced CMOS technology which enables it to operate at Bipolar speeds while consuming
only 90 mA.
Two major features of the WS57C128FB are its Low Power and High Speed. These features make it an ideal
solution for applications which require fast access times, low power, and non-volatility. Typical applications include
systems which do not utilize mass storage devices and/or are board space limited.
The WS57C128FB is configured in the standard EPROM pinout which provides an easy upgrade path for systems
which are currently using standard EPROMs. The EPROMs are available in both 600 Mil DIP packages, and
leadless surface mount packages.
PINS PGM CE OE VPP VCC OUTPUTS
MODE
Read X VIL VIL VCC VCC DOUT
Output
Disable XXV
IH VCC VCC High Z
Standby X VIH XV
CC VCC High Z
Program VIL VIL VIH VPP VCC DIN
Program
Verify VIH VIL VIL VPP VCC DOUT
Program
Inhibit XV
IH XV
PP VCC High Z
MODE SELECTION
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WS57C128FB
4-16
ORDERING INFORMATION
SPEED PACKAGE PACKAGE OPERATING WSI
PART NUMBER (ns) TYPE DRAWING TEMPERATURE MANUFACTURING
RANGE PROCEDURE
WS57C128FB-45DMB 45 28 Pin CERDIP, 0.6" D2 Military MIL-STD-883C
WS57C128FB-55CMB 55 32 Pad CLLCC C2 Military MIL-STD-883C
WS57C128FB-55DMB 55 28 Pin CERDIP, 0.6" D2 Military MIL-STD-883C
WS57C128FB-70DMB*70 28 Pin CERDIP, 0.6" D2 Military MIL-STD-883C
PROGRAMMING/ALGORITHMS/ERASURE/PROGRAMMERS REFER TO
PAGE 5-1
The WS57C128FB is programmed using Algorithm D shown on page 5-9.
NOTE: 12. The actual part marking will not include the initials "WS."
For complete data sheet and electrical specifications see page 3-7.
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