EDI8L32128C Datasheet, PDF (1/5 Pages) White Electronic Designs Corporation – 128Kx32 CMOS High Speed Static RAM

White Electronic Designs
EDI8L32128C
128Kx32 CMOS High Speed Static RAM
FEATURES
 128Kx32 bit CMOS Static
 Random Access Memory Array
 Fast Access Times: 12, 15, 17, 20, and 25ns
 Individual Byte Enables
 User Configurable Organization with Minimal
Additional Logic
 Master Output Enable and Write Control
 TTL Compatible Inputs and Outputs
 Fully Static, No Clocks
 Surface Mount Package
 68 Lead PLCC, No. 99 (JEDEC MO-47AE)
 Small Footprint, 0.990 Sq. In.
 Multiple Ground Pins for Maximum Noise
Immunity
 Single +5V (±5%) Supply Operation
DESCRIPTION
The EDI8L32128C is a high speed, high performance,
four megabit density Static RAM organized as a 128Kx32
bit array.
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.
Fully asynchronous circuitry is used, requiring no clocks or
refreshing for operation and providing equal access and
cycle times for ease of use.
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.
NOTE: Solder Reflow temperature should not exceed 230°C
FIG. 1 PIN CONFIGURATION
TOP VIEW
DQ17 10
DQ18 11
DQ19 12
VSS 13
DQ20 14
DQ21 15
DQ22 16
DQ23 17
VCC 18
DQ24 19
DQ25 20
DQ26 21
DQ27 22
VSS 23
DQ28 24
DQ29 25
DQ30 26
60 DQ14
59 DQ13
58 DQ12
57 VSS
56 DQ11
55 DQ10
54 DQ9
53 DQ8
52 VCC
51 DQ7
50 DQ6
49 DQ5
48 DQ4
47 VSS
46 DQ3
45 DQ2
44 DQ1
PIN DESCRIPTION
AØ-16
EØ-3#
W#
G#
DQØ-31
VCC
VSS
NC
Address Inputs
Chip Enables (One per Byte)
Master Write Enable
Master Output Enable
Common Data Input/Output
Power (+5V±5%)
Ground
No Connection
BLOCK DIAGRAM
A0-A16
G#
17
W#
E0#
E1#
E2#
E3#
128Kx32
Memory
Array
DQ0-DQ7
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
Rev. 6
1
White Electronic Designs Corporation • [phone] • www.wedc.com