A278308
Preliminary
Features
n
n
n
n
262,144 X 8 bit organization
Programming voltage: 12.75V
Access time: 70 ns (max.)
Current: Operating: 30mA (max.) at 5MHz
Standby:
100µA (max.)
n
All inputs and outputs are directly TTL-compatible
n
Available in 32-pin DIP and 32-pin PLCC packages
256K X 8 OTP CMOS EPROM
General Description
The A278308 chip is a high-performance 2,097,152 bit
one-time programmable read only memory (OTP
EPROM) organized as 256K by 8 bits. The A278308
requires only 5V power supply in normal read mode
operation and any input signals are TTL levels. The
A278308 is available in industry standard 32 pin dual-in-
line and 32 pin PLCC packages.
Pin Configurations
n
DIP
n
PLCC
A12
A15
A16
A16
A15
A12
A7
A6
A5
A4
A3
A2
A1
A0
I/O
0
I/O
1
I/O
2
GND
2
3
4
5
6
31
30
29
28
27
PGM
A17
32
31
A14
A7
A13
A6
A8
A9
A11
OE
A10
CE
I/O
7
I/O
6
I/O
5
I/O
2
I/O
3
I/O
4
GND
I/O
1
I/O
4
I/O
3
I/O
5
I/O
6
A5
A4
A3
A2
A1
A0
I/O
0
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
5
30
29
28
27
26
4
3
2
1
A14
A13
A8
A9
A11
OE
A10
CE
I/O
7
7
8
9
10
11
12
13
14
15
16
26
25
24
23
22
21
20
19
18
17
A278308L
A17
25
24
23
22
21
VPP
1
32
VCC
PRELIMINARY
(December, 1998, Version 2.0)
1
AMIC Technology, Inc.
PGM
VCC
VPP
A278308
AMICC [ AMIC TECHNOLOGY ]
