White Electronic Designs
512Kx8 STATIC RAM CMOS, MODULE
FEATURES
512Kx8 bit CMOS Static
Random Access Memory
• Access Times 20 through 100ns
• Data Retention Function (EDI8F8512LP)
• TTL Compatible Inputs and Outputs
• Fully Static, No Clocks
High Density Packaging
• 36 Pin SIP, No. 63
• 32 Pin DIP, JEDEC Pinout, No. 91 (55-100ns)
• 32 Pin DIP, JEDEC Pinout, No. 183 (20-35ns)
Single +5V (±10%) Supply Operation
*This product is subject to change without notice.
EDI8F8512C
DESCRIPTION
The EDI8F8512C is a 4096K bit CMOS Static RAM based on four
128Kx8 or 256Kx4 (high speed) Static RAMs mounted on a multi-
layered epoxy laminate (FR4) substrate.
Functional equivalence to the monolithic four megabit Static RAM
is achieved by utilization of an on-board decoder that interprets the
higher order address(es) to select one of the128Kx8 or 256Kx4 Static
RAMs.
The 32 pin DIP pinout adheres to the JEDEC standard for the four
megabit device, to ensure compatibility with future monolithics.
A low power version with data retention (EDI8F8512LP) is also
available.
All inputs and outputs are TTL compatible and operate from a single
5V supply. Fully asynchronous, the EDI8F8512C requires no clocks
or refreshing for operation.
FIG. 1
PIN CONFIGURATIONS
NC
V
CC
W#
DQ2
DQ3
DQ0
A1
A2
A3
A4
V
SS
DQ5
A10
A11
A5
A13
A14
NC
E#
A15
A16
A12
A18
A6
DQ1
V
SS
A0
A7
A8
A9
DQ7
DQ4
DQ6
A17
V
CC
G#
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
8F8512C Pin Config.
A18
A16
A14
A12
A7
A6
A5
A4
A3
A2
A1
A0
DQ0
DQ1
DQ2
V
SS
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
8F8512C Pin Config
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
V
CC
A15
A17
W#
A13
A8
A9
A11
G#
A10
E#
DQ7
DQ6
DQ5
DQ4
DQ3
PIN NAMES
A0-A18
E#
W#
G#
DQ0-DQ7
V
CC
V
SS
NC
Address Inputs
Chip Enable
Write Enable
Output Enable
Common Data Input/Output
Power (+5V±10%)
Ground
No Connection
White Electronic Designs Corp. reserves the right to change products or specifications without notice.
July 2002
Rev. 13A
1
White Electronic Designs Corporation • (602) 437-1520 • www.wedc.com
WEDC [ WHITE ELECTRONIC DESIGNS CORPORATION ]
