EDI8F32512C
512Kx32 Static RAM CMOS, High Speed Module
FEATURES
DESCRIPTION
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512Kx32 bit CMOS Static
Random Access Memory
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.
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Access Times: 15, 20, and 25ns
Individual Byte Selects
Fully Static, No Clocks
TTL Compatible I/O
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.
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High Density Package
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.
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72 Pin ZIP, No. 173
72 lead SIMM, No. 174 (Gold Option)
Common Data Inputs and Outputs
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.
Single +5V ( 10ꢀ) Supply Operation
Note: Consult factory for availability of:
• RoHS compliant products
Pins PD1- PD4, are used to identify module memory density in
applications where alternate modules can be interchanged.
• Vendor source control options
• Industrial temperature option
FIG. 1
Pin Names
A0-A18
E0#-E3#
W#
Address Inputs
Chip Enables
Write Enable
Output Enable
Pin Configurations and Block Diagram
NC
PD2
VSS
PD1
DQ8
DQ9
DQ10
DQ11
A0
1
3
5
7
9
NC
PD3
PD0
DQ0
DQ1
DQ2
DQ3
VCC
A7
A8
A9
DQ4
DQ5
DQ6
DQ7
W#
2
4
6
G#
8
DQ0-DQ31
Common Data
Input/Output
10
12
14
16
18
20
22
24
26
28
30
32
34
36
11
13
15
17
19
21
23
25
27
29
31
33
35
VCC
VSS
NC
Power (+5V 10ꢀ%
Ground
No Connectiona
A1
A2
DQ12
DQ13
DQ14
DQ15
VSS
A0-A18
W#
G#
A15
E1#
A14
E0#
512K
E3#
A17
G#
DQ24
DQ25
DQ26
DQ27
A3
A4
A5
VCC
A6
DQ28
DQ29
DQ30
DQ31
A18
37
39
41
43
45
47
49
51
53
55
57
59
61
63
65
67
69
71
E2# 38
A16 40
VSS
42
DQ16 44
DQ17 46
DQ18 48
DQ19 50
A10 52
A11 54
A12 56
A13 58
DQ20 60
DQ21 62
DQ22 64
DQ23 66
DQ0-DQ7
X
8
E0#
512K
DQ8-DQ15
DQ16-DQ23
DQ24-DQ31
X
8
E1#
E2#
512K
X
8
VSS
NC 70
NC 72
68
NC
512K
X
8
PD0, PD1, PD3= OPEN
PD2= VSS
E3#
8G32512C Pin Config.
8G32512C Blk Dia.
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