EDI8L32128C
White Electronic Designs
128Kx32 CMOS High Speed Static RAM
FEATURES
DESCRIPTION
The EDI8L32128C is a high speed, high performance,
four megabit density Static RAM organized as a 128Kx32
bit array.
128Kx32 bit CMOS Static
Random Access Memory Array
Fast Access Times: 12, 15, 17, 20, and 25ns
Individual Byte Enables
Four Chip Enables, Write Control, and Output Enable
provide the user with a flexible memory solution. The user
may independently enable each of the four bytes, and,
with minimal additional peripheral logic, the unit may be
configured as a 256Kx16 or 512Kx8 array.
User Configurable Organization with Minimal
Additional Logic
Master Output Enable and Write Control
TTL Compatible Inputs and Outputs
Fully Static, No Clocks
Fully asynchronous circuitry is used, requiring no clocks or
refreshing for operation and providing equal access and
cycle times for ease of use.
Surface Mount Package
The EDI8L32128C, allows 4 megabits of memory to be
placed in less than 0.990 square inches of board space; a
savings of 0.885 square inches over four standard 128Kx8
components.
68 Lead PLCC, No. 99 (JEDEC MO-47AE)
Small Footprint, 0.990 Sq. In.
Multiple Ground Pins for Maximum Noise
Immunity
NOTE: Solder Reflow temperature should not exceed 230°C
Single +5V (±5%) Supply Operation
FIG. 1 PIN CONFIGURATION
TOP VIEW
PIN DESCRIPTION
AØ-16
EØ-3#
W#
Address Inputs
Chip Enables (One per Byte)
Master Write Enable
Master Output Enable
Common Data Input/Output
Power (+5V±5%)
G#
60 DQ14
59 DQ13
58 DQ12
57 VSS
DQ17 10
DQ18 11
DQ19 12
VSS 13
DQØ-31
VCC
56 DQ11
55 DQ10
54 DQ9
53 DQ8
52 VCC
51 DQ7
50 DQ6
49 DQ5
48 DQ4
47 VSS
VSS
Ground
DQ20 14
DQ21 15
DQ22 16
DQ23 17
VCC 18
DQ24 19
DQ25 20
DQ26 21
DQ27 22
VSS 23
NC
No Connection
BLOCK DIAGRAM
A
0-A16
G#
W#
E0#
E1#
E2#
E3#
17
46 DQ3
45 DQ2
44 DQ1
DQ28 24
DQ29 25
DQ30 26
DQ0-DQ7
128Kx32
Memory
Array
DQ8-DQ15
DQ16-DQ23
DQ24-DQ31
NOTE: Pin 2 & 67 on the 64Kx32 (EDI8L3265C) and the 256Kx32 (EDI8L32256C) are word select pins.
White Electronic Designs Corp. reserves the right to change products or specifications without notice.
August, 2002
1
White Electronic Designs Corporation • (602) 437-1520 • www.wedc.com
Rev. 6