UVEPROM
Austin Semiconductor, Inc.
256K UVEPROM
UV Erasable Programmable
Read-Only Memory
AVAILABLE AS MILITARY
SPECIFICATIONS
• SMD 5962-86063
• MIL-STD-883
• COTS-PEMS Version
SMJ27C256
AS27C256
PIN ASSIGNMENT
(Top View)
28-Pin DIP (J)
(600 MIL)
V
PP
A12
A7
A6
A5
A4
A3
A2
A1
A0
DQ0
DQ1
DQ2
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
Vcc
A14
A13
A8
A9
A11
G\
A10
E\
DQ7
DQ6
DQ5
DQ4
DQ3
FEATURES
Organized 32,768 x 8
Single +5V ±10% power supply
Pin-compatible with existing 256K ROM’s and EPROM’s
All inputs/outputs fully TTL compatible
Power-saving CMOS technology
Very high-speed SNAP! Pulse Programming
3-state output buffers
400-mV DC assured noise immunity with standarad TTL
loads
• Latchup immunity of 250 mA on all input and output pins
• Low power dissipation (CMOS Input Levels)
-Active - 165mW Worst Case
-Standby - 1.7mW Worst Case (CMOS-input levels)
•
•
•
•
•
•
•
•
32-Pin LCC (ECA)
(450 x 550 mils)
A7
A12
A12
A14
A10
V
PP
6
NC
NC
V
CC
V
CC
A15
A14
CE2
A13
4 3 2 1 32 31 30
OPTIONS
• Timing
150ns access
170ns access
200ns access
250ns access
300ns access
MARKING
-15
-17
-20
-25
-30
A6
5
A7
A5
6
A6
A4
7
A5
A3
8
A4
A2
9
A3
A2 10
A1
A1 11
A0
A0 12
NC
DQ1 13
DQ0
29
A8
\
WE
28
A9
A13
27
A11
A8
26
NC
A9
25
G\
A11
24
A10
\
OE
23
E\
A10
22
DQ7
\
CE1
21
DQ6
DQ8
14 15 16 17 18 19 20
• Package(s)
Ceramic DIP (600mils)
J
Ceramic LCC (450 x 550 mils) ECA
• Operating Temperature Ranges
M
Military (-55
o
C to +125
o
C)
Industrial (-40°C to +85°C)
I
No. 110
No. 208
Pin Name
A0 - A14
DQ0-DQ7
E\
G\
GND
V
CC
V
PP
Function
Address Inputs
Inputs (programming)/Outputs
Chip Enable/Power Down
Output Enable
Ground
5V Supply
13V Programming Power Supply
For more products and information
please visit our web site at
www.austinsemiconductor.com
SMJ27C256/AS27C256
Rev. 2.5 10/03
Austin Semiconductor, Inc. reserves the right to change products or specifications without notice.
1
DQ1
DQ2
DQ2
DQ3
V
SS
GND
DQ4
NC
DQ5
DQ3
DQ6
DQ4
DQ7
DQ5
MICROSS [ MICROSS COMPONENTS ]
