EDI8F32128C Datasheet, PDF (1/9 Pages) White Electronic Designs Corporation – 128KX32 STATIC RAM CMOS, HIGH SPEED MODULE

White Electronic Designs
EDI8F32128C
128KX32 STATIC RAM CMOS, HIGH SPEED MODULE
FEATURES
128Kx32 bit CMOS Static
Random Access Memory
Access Times: 15, 20, and 25ns
Individual Byte Selects
Fully Static, No Clocks
TTL Compatible I/O
Single +5V (±10%) Supply Operation
High Density Package with JEDEC Standard
Pinouts
64 Pin ZIP, No. 85
• Height: 13.97 (0.550")
64 Lead SIMM, No. 333
• Height: 15.62 (0.615")
Common Data Inputs and Outputs
DESCRIPTION
The EDI8F32128C is a high speed 4Mb Static RAM
module organized as 128K words by 32 bits. This module is
constructed from four 128Kx8 Static RAMs in SOJ packages
on an epoxy laminate (FR4) board.
Four chip enables (E0# - 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 EDI8F32128C is offered in 64 pin ZIP/SIMM package
which enables eight megabits of memory to be placed in
less than 1.4 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.
The ZIP and SIMM modules contain two pins, PD1
and PD2, which are used to identify module memory
density in applications where alternate modules can be
interchanged.
FIG. 1 – PIN CONFIGURATIONS AND BLOCK DIAGRAM
PIN NAMES
PD0 2
DQ0 4
DQ1 6
DQ2 8
DQ3 10
VCC 12
A7 14
A8 16
A9 18
DQ4 20
DQ5 22
DQ6 24
DQ7 26
W# 28
A14 30
E0# 32
1 VSS
3 PD1
5 DQ8
7 DQ9
9 DQ10
11 DQ11
13 A0
15 A1
17 A2
19 DQ12
21 DQ13
23 DQ14
25 DQ15
27 VSS
29 A15
31 E1#
E2# 34
A16 36
VSS 38
DQ16 40
DQ17 42
DQ18 44
DQ19 46
A10 48
A11 50
A12 52
A13 54
DQ20 56
DQ21 58
DQ22 60
DQ23 62
VSS 64
33 E3#
35 NC
37 G#
39 DQ24
41 DQ25
43 DQ26
45 DQ27
47 A3
49 A4
51 A5
53 VCC
55 A6
57 DQ28
59 DQ29
61 DQ30
63 DQ31
PD0 = OPEN
PD1 = OPEN
AØ-A16 Address Inputs
EØ#-E3# Chip Enables
W#
Write Enables
G#
Output Enable
DQØ-DQ31 Common Data Input/Output
VCC
Power (+5V ± 10%)
VSS
Ground
BLOCK DIAGRAM
A0 - A17
W#
G#
128Kx8 DQ0-7
E0#
128Kx8 DQ8-15
E1#
128Kx8 DQ16-23
E2#
128Kx8 DQ24-31
E3#
White Electronic Designs Corp. reserves the right to change products or specifications without notice.
May 2006
Rev. 1
1
White Electronic Designs Corporation • [phone] • www.wedc.com