WSE128K16-XXX
1
White Electronic Designs Corporation • (602) 437-1520 • www.wedc.com
White Electronic Designs
PRELIMINARY*
White Electronic Designs Corp. reserves the right to change products or specifi cations without notice.
March 2005
Rev. 3
128Kx16 SRAM/EEPROM MODULE
FEATURES
Access Times of 35ns (SRAM) and 150ns (EEPROM)
Access Times of 45ns (SRAM) and 120ns (EEPROM)
Access Times of 70ns (SRAM) and 300ns (EEPROM)
Packaging
• 66 pin, PGA Type, 1.075" square HIP, Hermetic
Ceramic HIP (H1) (Package 400)
• 68 lead, Hermetic CQFP (G2T), 22mm (0.880")
square (Package 509). Designed to fi t JEDEC 68
lead 0.990" CQFJ footprint (FIGURE 2)
128Kx16 SRAM
128Kx16 EEPROM
Organized as 128Kx16 of SRAM and 128Kx16 of
EEPROM Memory with separate Data Buses
Both blocks of memory are User Confi gurable as
256Kx8
Low Power CMOS
BLOCK DIAGRAM
PIN DESCRIPTION
ED
0-15
EEPROM Data Inputs/Outputs
SD
0-15
SRAM Data Inputs/Outputs
A
0-16
Address Inputs
SWE#
1-2
SRAM Write Enable
SCS#
1-2
SRAM Chip Selects
OE# Output Enable
V
CC
Power Supply
GND Ground
NC Not Connected
EWE#
1-2
EEPROM Write Enable
ECS#
1-2
EEPROM Chip Select
Top View
FIGURE 1 – WSE128K16-XH1X PIN
CONFIGURATION
Commercial, Industrial and Military Temperature
Ranges
TTL Compatible Inputs and Outputs
Built-in Decoupling Caps and Multiple Ground Pins
for Low Noise Operation
Weight - 13 grams typical
EEPROM MEMORY FEATURES
Write Endurance 10,000 Cycles
Data Retention at 25°C, 10 Years
Low Power CMOS Operation
Automatic Page Write Operation
Page Write Cycle Time 10ms Max.
Data Polling for End of Write Detection
Hardware and Software Data Protection
TTL Compatible Inputs and Outputs
* This product is under development, is not qualifi ed or characterized and is subject to
change without notice.
SD
8
SD
9
SD
10
A
13
A
14
A
15
A
16
NC
SD
0
SD
1
SD
2
11 22 33 44 55 66
11223 344556
ED
8
ED
9
ED
10
A
6
A
7
NC
A
8
A
9
ED
0
ED
1
ED
2
SD
15
SD
14
SD
13
SD
12
OE#
NC
SWE#
1
SD
7
SD
6
SD
5
SD
4
SWE
2
#
SCS
2
#
GND
SD
11
A
10
A
11
A
12
V
CC
SCS
1
#
NC
SD
3
ED
15
ED
14
ED
13
ED
12
A
0
A
1
A
2
ED
7
ED
6
ED
5
ED
5
V
CC
ECS
2
#
EWE
2
#
ED
11
A
3
A
4
A
5
EWE
1
#
ECS
1
#
GND
ED
3
EWE
1
# ECS
1
# EWE
2
# ECS
2
#SWE
2
# SCS
2
#
128K x 8
SRAM
8
SD
0-7
128K x 8
SRAM
8
SD
8-15
128K x 8
EEPROM
8
ED
0-7
128K x 8
EEPROM
8
ED
8-15
A
0-16
OE#
SWE
1
# SCS
1
#
