WE512K16-XG4X
HI-RELIABILITY PRODUCT
512Kx16 CMOS EEPROM MODULE
FEATURES
s
Access Time of 140, 150, 200ns
s
Packaging:
鈥?68 lead, 40mm Hermetic CQFP (Package 501)
s
Organized as 4 banks of 128Kx16
s
Write Endurance 10,000 Cycles
s
Data Retention Ten Years Minimum
s
Military Temperature Range
s
Low Power CMOS
s
Automatic Page Write Operation
s
Page Write Cycle Time: 10ms Max
s
Data Polling for End of Write Detection
s
Hardware and Software Data Protection
s
TTL Compatible Inputs and Outputs
s
5 Volt Power Supply
s
8 Built-in Decoupling Caps and Multiple Ground Pins for Low
Noise Operation
s
Weight - 20 grams typical
FIG. 1
PIN CONFIGURATION
TOP VIEW
NC
A
0
A
1
A
2
A
3
A
4
A
5
CS
1
GND
CS
3
WE
A
6
A
7
A
8
A
9
A
10
V
CC
PIN DESCRIPTION
I/O
0-15
Data Inputs/Outputs
A
0-16
Address Inputs
Write Enable
Chip Selects
Output Enable
Power Supply
Ground
Not Connected
9 8 7 6 5 4 3 2 1 68 67 66 65 64 63 62 61
I/O
0
I/O
1
I/O
2
I/O
3
I/O
4
I/O
5
I/O
6
I/O
7
GND
I/O
8
I/O
9
I/O
10
I/O
11
I/O
12
I/O
13
I/O
14
I/O
15
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43
128K x 8
WE
60
59
58
57
56
55
54
53
52
51
50
49
48
47
46
45
44
NC
NC
INC
NC
NC
NC
NC
NC
GND
NC
NC
NC
NC
NC
NC
NC
NC
CS
1-4
OE
V
CC
GND
NC
BLOCK DIAGRAM
CS
1
C S
2
CS
3
CS
4
A
0-16
OE
WE
128K x 8
128K x 8
128K x 8
128K x 8
V
CC
A
11
A
12
A
13
A
14
A
15
A
16
CS
2
OE
CS
4
NC
NC
NC
NC
NC
NC
NC
128K x 8
128K x 8
128K x 8
I/O
0-7
I/O
8-15
NOTE:
CS
1-4
are used as bank selects. During reads, only one CSx can be
active at one time.
April 1999 Rev. 2
1
White Electronic Designs Corporation 鈥?Phoenix, AZ 鈥?(602) 437-1520