EDI8F8512C
White Electronic Designs
512Kx8 STATIC RAM CMOS, MODULE
FEATURES
DESCRIPTION
512Kx8 bit CMOS Static
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.
Random Access Memory
• Access Times 20 through 100ns
• Data Retention Function (EDI8F8512LP)
• TTL Compatible Inputs and Outputs
• Fully Static, No Clocks
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.
High Density Packaging
• 36 Pin SIP, No. 63
A low power version with data retention (EDI8F8512LP) is also
available.
• 32 Pin DIP, JEDEC Pinout, No. 91 (55-100ns)
• 32 Pin DIP, JEDEC Pinout, No. 183 (20-35ns)
Single +5V (±10%) Supply Operation
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.
*This product is subject to change without notice.
FIG. 1 PIN CONFIGURATIONS
NC
1
V
CC
W#
DQ2
DQ3
DQ0
A1
2
3
4
5
PIN NAMES
A18
A16
A14
A12
A7
1
2
3
4
5
6
7
8
9
V
CC
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
6
A15
A17
W#
7
A0-A18
E#
W#
G#
DQ0-DQ7
VCC
Address Inputs
Chip Enable
Write Enable
Output Enable
Common Data Input/Output
Power (+5V±10%)
Ground
A2
8
A3
9
A13
A8
A4
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
A6
A5
V
SS
A9
A4
A3
A11
G#
DQ5
A10
A11
A5
A2 10
A1 11
A0 12
A10
E#
DQ7
DQ6
DQ5
DQ4
DQ3
A13
A14
NC
VSS
NC
DQ0 13
DQ1 14
DQ2 15
No Connection
E#
VSS
16
A15
A16
A12
A18
A6
8F8512C Pin Config
DQ1
V
SS
A0
A7
A8
A9
DQ7
DQ4
DQ6
A17
VCC
G#
8F8512C Pin Config.
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