EDI8F32512V Datasheet, PDF (1/6 Pages) White Electronic Designs Corporation – 512Kx32 Static RAM CMOS, High Speed Module

White Electronic Designs
EDI8F32512V
512Kx32 Static RAM CMOS, High Speed Module
FEATURES
DESCRIPTION
n 512Kx32 bit CMOS Static RAM
n Random Access Memory
n Access Times: 15, 20, and 25ns
n Individual Byte Selects
n Fully Static, No Clocks
n TTL Compatible I/O
n High Density Package
n 72 Pin ZIP, No. 173
n 72 lead SIMM, No. 174 (Gold Option)
The EDI8F32512V is a high speed 16 Mb 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 (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 EDI8F32512V is offered in 72 pin ZIP and 72 lead SIMM
packages, which enable 16 Mb of memory to be placed in
less than 1.3 square inches of board space.
n Common Data Inputs and Outputs
n Single +3.3V (±10%) Supply Operation
All inputs and outputs are TTL compatible and operate from a
single 3.3V supply. Fully asynchronous circuitry requires no
clocks or refreshing for operation and provides equal access
and cycle times for ease of use.
* This product is subject to change without notice.
Pins PD0- PD3, are used to identify module memory density in
applications where alternate modules can be interchanged.
FIG. 1
Pin Configurations and Block Diagram
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Pin Names
A0-A18
E0#-E3#
W#
G#
DQ0-DQ31
VCC
VSS
NC
Address Inputs
Chip Enables
Write Enable
Output Enable
Common Data
Input/Output
Power (+3.3V±10%)
Ground
No Connectiona
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White Electronic Designs Corp. reserves the right to change products or specifications without notice.
Aug, 2002
Rev. 8A
1
White Electronic Designs Corporation • [phone] • www.wedc.com