EDI8F32512C
512Kx32 Static RAM CMOS, High Speed Module
FEATURES
512Kx32 bit CMOS Static
Random Access Memory
Access Times: 15, 20, and 25ns
Individual Byte Selects
Fully Static, No Clocks
TTL Compatible I/O
High Density Package
72 Pin ZIP, No. 173
72 lead SIMM, No. 174 (Gold Option)
Common Data Inputs and Outputs
Single +5V (±10%) Supply Operation
Note: Consult factory for availability of:
• RoHS compliant products
• Vendor source control options
• Industrial temperature option
DESCRIPTION
The EDI8F32512C is a high speed 16 megabit Static RAM
module organized as 512K words by 32 bits. This module is
constructed from four 512Kx8 Static RAMs in SOJ packages
on an epoxy laminate (FR4) board.
Four chip enables (EØ-E3) are used to independently
enable the four bytes. Reading or writing can be executed on
individual bytes or any combination of multiple bytes through
proper use of selects.
The EDI8F32512C is offered in 72 pin ZIP and 72 lead SIMM
packages, which enable 16 megabits of memory to be placed
in less than 1.3 square inches of board space.
All inputs and outputs are TTL compatible and operate from
a single 5V supply. Fully asynchronous circuitry requires no
clocks or refreshing for operation and provides equal access
and cycle times for ease of use.
Pins PD1- PD4, are used to identify module memory density in
applications where alternate modules can be interchanged.
FIG. 1
Pin Configurations and Block Diagram
NC
PD3
PD0
DQ0
DQ1
DQ2
DQ3
V
CC
A7
A8
A9
DQ4
DQ5
DQ6
DQ7
W#
A14
E0#
E2#
A16
V
SS
DQ16
DQ17
DQ18
DQ19
A10
A11
A12
A13
DQ20
DQ21
DQ22
DQ23
V
SS
NC
NC
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
32
34
36
38
40
42
44
46
48
50
52
54
56
58
60
62
64
66
68
70
72
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
33
35
37
39
41
43
45
47
49
51
53
55
57
59
61
63
65
67
69
71
NC
PD2
V
SS
PD1
DQ8
DQ9
DQ10
DQ11
A0
A1
A2
DQ12
DQ13
DQ14
DQ15
V
SS
A15
E1#
E3#
A17
G#
DQ24
DQ25
DQ26
DQ27
A3
A4
A5
V
CC
A6
DQ28
DQ29
DQ30
DQ31
A18
NC
Pin Names
A0-A18
E0#-E3#
W#
G#
DQ0-DQ31
V
CC
V
SS
NC
A0-A18
W#
G#
512K
X 8
E0#
512K
X 8
E1#
512K
X 8
E2#
512K
X 8
E3#
8G32512C Blk Dia.
Address Inputs
Chip Enables
Write Enable
Output Enable
Common Data
Input/Output
Power (+5V±10%)
Ground
No Connectiona
DQ0-DQ7
DQ8-DQ15
DQ16-DQ23
DQ24-DQ31
PD0, PD1, PD3= OPEN
PD2= V
SS
8G32512C Pin Config.
White Electronic Designs Corp. reserves the right to change products or specifications without notice.
March 2006
Rev. 9
1
White Electronic Designs Corporation • (602) 437-1520 • www.wedc.com
WEDC [ WHITE ELECTRONIC DESIGNS CORPORATION ]
