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WS27C256L-15DMB fiches techniques PDF

STMicroelectronics - Military 32K x 8 CMOS EPROM

Numéro de référence WS27C256L-15DMB
Description Military 32K x 8 CMOS EPROM
Fabricant STMicroelectronics 
Logo STMicroelectronics 





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WS27C256L-15DMB fiche technique
WS27C256L
Military 32K x 8 CMOS EPROM
KEY FEATURES
High Performance CMOS
— 120 ns Access Time
Fast Programming
DESC SMD No. 5962-86063
Ceramic Leadless Chip Carrier (CLLCC)
EPI Processing
— Latch-Up Immunity to 200 mA
— ESD Protection Exceeds 2000 Volts
300 Mil DIP or Standard 600 Mil DIP
JEDEC Standard Pin Configuration
GENERAL DESCRIPTION
The WS27C256L is a performance oriented 256K UV Erasable Electrically Programmable Read Only Memory
organized as 32K words x 8 bits/word. It is manufactured using an advanced CMOS technology which enables it to
operate at speeds up to 120 nsecs. The memory 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 WS27C256L 256K EPROM provides 32K of 8 bit wide code store capacity for DSP, microprocessor, and
microcontroller-based systems. Its 120 nsec access time over the full Military temperature range provides the
potential of no-wait state operation. And where this parameter is important, the WS27C256L provides the user with
a very fast 35 nsec TOE output enable time.
The WS27C256L is offered in a 28 pin 300 mil skinny CERDIP or the standard 600 mil CERDIP, and also in a
32 pad Ceramic Leadless Chip Carrier (CLLCC) for surface mount applications. All packages incorporate the
standard JEDEC EPROM pinout.
PIN CONFIGURATION
Chip Carrier
TOP VIEW
CERDIP
A6
4
5
3
2
1
32 31 30
29
A8
A5 6
28 A9
A4 7
27 A11
A3 8
26 NC
A2 9
25 OE
A1 10
24 A10
A0 11
23 CE/PGM
NC 12
22 O7
O0 13
21 O6
14 15 16 17 18 19 20
O1 O2 NC O3 O4 O5
PRODUCT SELECTION GUIDE
PARAMETER
Address Access Time (Max)
Chip Select Time (Max)
Output Enable Time (Max)
Return to Main Menu
WS27C256L-12
120 ns
120 ns
35 ns
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 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
WS27C256L-15
150 ns
150 ns
40 ns
WS27C256L-20
200 ns
200 ns
40 ns
4-19

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