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PDF WS57C256F-35C Data sheet ( Hoja de datos )

Número de pieza WS57C256F-35C
Descripción HIGH SPEED 32K x 8 CMOS EPROM
Fabricantes STMicroelectronics 
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No Preview Available ! WS57C256F-35C Hoja de datos, Descripción, Manual

WS57C256F
HIGH SPEED 32K x 8 CMOS EPROM
Fast Access Time
KEY FEATURES
Immune to Latch-UP
— tACC = 35 ns
— tCE = 35 ns
Low Power Consumption
— 200 µA Standby ICC
— Up to 200 mA
ESD Protection Exceeds 2000 Volts
Available in 300 Mil DIP and PLDCC
DESC SMD No. 5962-86063
GENERAL DESCRIPTION
The WS57C256F is a High Performance 32K x 8 UV Erasable EPROM. It is manufactured using an advanced
CMOS process technology enabling it to operate at speeds as fast as 35 ns Address Access Time (tACC) and 35 ns
Chip Enable Time (tCE). It was designed utilizing WSI's patented self-aligned split gate EPROM cell, resulting in a
low power device with a very cost effective die size. The low standby power capability of this 256 K product (200 µA
in a CMOS interface environment) is especially attractive.
This product, with its high speed capability, is particularly appropriate for use with today's fast DSP processors and
high-clock-rate Microprocessors. The WS57C256F's 35 ns speed enables these advanced processors to operate
without introducing any undesirable wait states. The WS57C256F is also ideal for use in modem applications, and is
recommended for use in these applications by the leading modem chip set manufacturer.
The WS57C256F is available in a variety of package types including the space saving 300 Mil DIP, the surface
mount PLDCC, and other windowed and non-windowed options. And its standard JEDEC EPROM pinouts provide
for automatic upgrade density paths for current 64K and 128K EPROM users.
MODE SELECTION
PINS CE/
MODE
PGM
OE
A9
A0
VPP VCC OUTPUTS
Read
Output
Disable
VIL VIL X
X VIH X
X VCC VCC DOUT
X VCC VCC High Z
Standby
Program
Program
Verify
VIH X
VIL VIH
X
X
X VIL X
X VCC VCC
X VPP2 VCC
High Z
DIN
X VPP2 VCC DOUT
Program
Inhibit
Signature3
VIH VIH X X VPP2 VCC
VIL VIL VH2 VIL VCC VCC
VIL VIL VH2 VIH VCC VCC
High Z
23 H4
EO H5
NOTES:
1. X can be VIL or VIH.
2. VIH = VPP = 12.75 ± 0.25 V.
3. A1 – A8, A10 – A14 = VIL.
4. Manufacturer Signature.
5. Device Signature.
PRODUCT SELECTION GUIDE
PARAMETER
Address Access Time (Max)
Output Enable Time (Max)
WS57C256F-35
35 ns
15 ns
PIN CONFIGURATION
TOP VIEW
Chip Carrier
CERDIP
VPP 1
A6
4
5
3
2
1
32 31 30
29
A8
A12 2
A7 3
A5 6
28
A4 7
27
A3 8
26
A2 9
25
A1 10
24
A0 11
23
NC 12
22
O0 13
21
14 15 16 17 18 19 20
A9
A11
NC
OE
A10
CE/PGM
O7
O6
A6 4
A5 5
A4 6
A3 7
A2 8
A1 9
A0 10
O0 11
O1 12
O2 13
O1 O2 NC O3 O4 O5
GND 14
28 VCC
27 A14
26 A13
25 A8
24 A9
23 A11
22 OE
21 A10
20 CE/PGM
19 O7
18 O6
17 O5
16 O4
15 O3
WS57C256F-45
45 ns
20 ns
WS57C256F-55
55 ns
25 ns
WS57C256F-70
70 ns
30 ns
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WS57C256F-35C pdf
WS57C256F
ORDERING INFORMATION
PART NUMBER
SPEED
(ns)
WS57C256F-35C
WS57C256F-35D
WS57C256F-35J
WS57C256F-35L
WS57C256F-35P
WS57C256F-35T
WS57C256F-45C
WS57C256F-45D
WS57C256F-45P
WS57C256F-45T
WS57C256F-55C
WS57C256F-55CMB
WS57C256F-55D
WS57C256F-55DM
WS57C256F-55DMB
WS57C256F-55J
WS57C256F-55L
WS57C256F-55P
WS57C256F-55T
WS57C256F-55TMB
WS57C256F-70CMB*
WS57C256F-70D
WS57C256F-70DMB*
WS57C256F-70J
WS57C256F-70JI
WS57C256F-70T
35
35
35
35
35
35
45
45
45
45
55
55
55
55
55
55
55
55
55
55
70
70
70
70
70
70
PACKAGE
TYPE
PACKAGE OPERATING
WSI
DRAWING TEMPERATURE MANUFACTURING
RANGE
PROCEDURE
32 Pad CLLCC
28 Pin CERDIP, 0.6"
32 Pin PLDCC
32 Pin CLDCC
28 Pin Plastic DIP, 0.6"
28 Pin CERDIP, 0.3"
32 Pad CLLCC
28 Pin CERDIP, 0.6"
28 Pin Plastic DIP, 0.6"
28 Pin CERDIP, 0.3"
32 Pad CLLCC
32 Pad CLLCC
28 Pin CERDIP, 0.6"
28 Pin CERDIP, 0.6"
28 Pin CERDIP, 0.6"
32 Pin PLDCC
32 Pin CLDCC
28 Pin Plastic DIP, 0.6"
28 Pin CERDIP, 0.3"
28 Pin CERDIP, 0.3"
32 Pad CLLCC
28 Pin CERDIP, 0.6"
28 Pin CERDIP, 0.6"
32 Pin PLDCC
32 Pin PLDCC
28 Pin CERDIP, 0.3"
C2
D2
J4
L3
P3
T2
C2
D2
P3
T2
C2
C2
D2
D2
D2
J4
L3
P3
T2
T2
C2
D2
D2
J4
J4
T2
Comm’l
Comm’l
Comm’l
Comm’l
Comm’l
Comm’l
Comm’l
Comm’l
Comm’l
Comm’l
Comm’l
Military
Comm’l
Military
Military
Comm’l
Comm’l
Comm’l
Comm’l
Military
Military
Comm’l
Military
Comm’l
Industrial
Comm’l
Standard
Standard
Standard
Standard
Standard
Standard
Standard
Standard
Standard
Standard
Standard
MIL-STD-883C
Standard
Standard
MIL-STD-883C
Standard
Standard
Standard
Standard
MIL-STD-883C
MIL-STD-883C
Standard
MIL-STD-883C
Standard
Standard
Standard
NOTE: 11. The actual part marking will not include the initials "WS."
*SMD product. See section 4 for DESC SMD number.
PROGRAMMING/ALGORITHMS/ERASURE/PROGRAMMERS
The WS57C256F is programmed using Algorithm D shown on page 5-9.
When using Data I/O programmers, algorithm 57C256FB is recommended for use with the
WS57C256F for best programming results.
REFER TO
PAGE 5-1
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