EDI8L24129V
White Electronic Designs
128Kx24 SRAM 3ꢀ3 Volt
FEATURES
The EDI8L24129VxxBC is a 373V, three megabit SRAM
constructed with three 128Kx8 die mounted on a multi-
layer laminate substrate7 With 10 to 15ns access times,
x24 width and a 373V operating voltage, the
EDI8L24129V is ideal for creating a single chip memory
solution for the Motorola DSP5630x (Figure 3) or a two
chip solution for the Analog Devices SHARCTM DSP
(Figure 4)7
128Kx24 bit CMOS Static
Random Access Memory Array
< Fast Access Times: 10, 12, and 15ns
< Master Output Enable and Write Control
< TTL Compatible Inputs and Outputs
< Fully Static, No Clocks
The single or dual chip memory solutions offer improved
system performance by reducing the length of board
traces and the number of board connections compared
to using multiple monolithic devices7 For example, the
capacitance load on the data lines for the BGA package
is 58% less than a monolithic SOJ solution7
Surface Mount Package
< 119 Lead BGA (JEDEC MO-163), No7 391
< Small Footprint, 14mm x 22mm
< Multiple Ground Pins for Maximum
Noise Immunity
The JEDEC Standard 119 lead BGA provides a 44%
space savings over using 128Kx8, 300mil wide SOJs
and the BGA package has a maximum height of 100
mils compared to 148 mils for the SOJ packages7 The
BGA package also allows the use of the same manu-
facturing and inspection techniques as the Motorola
DSP, which is also in a BGA package7
Single +373V (±5%) Supply Operation
DSP Memory Solution
< Motorola DSP5630xTM
< Analog Devices SHARCTM
PIN CONFIGURATION
Pin Symbols
Pin Names
AØ-A16
E
Address Inputs
Chip Enable
1
2
3
4
5
6
7
W
G
Master Write Enable
Master Output Enable
Common Data Input/Output
Power (3&3V±5%)
Ground
A
B
C
D
E
F
G
H
I
NC
AO
A5
A1
A2
E
A3
A7
NC
A4
A8
NC
NC
NC
NC
A6
I/012
I/013
I/014
I/015
I/016
I/017
NC
NC
NC
NC
I/00
I/01
I/02
I/03
I/04
I/05
NC
DQØ-DQ23
VCC
GND
NC
VCC
GND
VCC
GND
VCC
GND
VCC
GND
VCC
GND
VCC
NC
GND
VCC
GND
VCC
GND
VCC
GND
VCC
GND
VCC
GND
NC
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
NC
GND VCC
VCC GND
GND VCC
VCC GND
GND VCC
VCC GND
GND VCC
VCC GND
GND VCC
VCC GND
GND VCC
No Connection
J
I/018
I/019
I/020
I/021
I/022
I/023
NC
I/06
I/07
I/08
I/09
I/010
I/011
NC
K
L
M
N
O
P
Q
NC
A11
A15
NC
A12
A16
A9
A10
A14
W
NC
A13
G
NC
July 2002 Rev 3
ECO #14690
1
White Electronic Designs Corporation (508) 366-5151 wwwꢀwhiteedcꢀcom