White Microelectronics Phoenix, AZ (602) 437-1520
1
WS128K64V-XG4WX
128Kx64 3.3V SRAM MODULE
ADVANCED*
September 1998
FEATURES
s Access Times of 15, 17, 20, 25ns
s Packaging
116 lead, 40mm square, Hermetic CQFP (Package 504)
s Organized as 128Kx64, User Configurable as 256Kx32,
512Kx16 or 1Mx8.
s Commercial, Industrial and Military Temperature Ranges
s 3 Volt Power Supply
s Low Power CMOS
s 2V Data Retention Devices Available (Low Power Version)
s TTL Compatible Inputs and Outputs
s Built in Decoupling Caps and Multiple Ground Pins for Low
Noise Operation
s Weight
WF128K64V-XG4WX - 20 grams typical
* This data sheet describes a product that may or may not be under
development and is subject to change or cancellation without notice.
Note: Programming information available upon request.
FIG. 1 PIN CONFIGURATION FOR WF128K64V-XG4WX
1
128K x 8
8
I/O 0-7
CS1
2
128K x 8
8
I/O 8-15
CS2
8
I/O...
CSx
8
128K x 8
8
I/O 56-63
CS8
A 0-16
OE
WE1
WE2
WEx
WE8
......
BLOCK DIAGRAM
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
44
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
116
115
114
113
112
111
110
109
108
107
106
105
104
103
I/O3
I/O4
I/O5
I/O6
I/O7
GND
I/O8
I/O9
I/O10
I/O11
I/O12
I/O13
I/O14
I/O15
GND
I/O16
I/O17
I/O18
I/O19
I/O20
I/O21
I/O22
I/O23
GND
I/O24
I/O25
I/O26
I/O27
I/O28
I/O
29
I/O
30
I/O
31
V
CC
WE
3
CS
3
NC
A
16
A
15
WE
4
CS
4
OE
CS
5
WE
5
A
14
A
13
A
12
A
11
A
10
NC
CS
6
WE
6
V
CC
I/O
32
I/O
33
I/O
34
I/O60
I/O59
I/O58
I/O57
I/O56
GND
I/O55
I/O54
I/O53
I/O52
I/O51
I/O50
I/O49
I/O48
GND
I/O47
I/O46
I/O45
I/O44
I/O43
I/O42
I/O41
I/O40
GND
I/O39
I/O38
I/O37
I/O36
I/O35
I/O
2
I/O
1
I/O
0
V
CC
WE
2
CS
2
NC
A
0
A
1
A
2
A
3
A
4
WE
1
CS
1
NC
CS
8
WE
8
A
5
A
6
A
7
A
8
A
9
NC
CS
7
WE
7
V
CC
I/O
63
I/O
62
I/O
61
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
102
101
100
99
98
97
96
95
94
93
92
91
90
89
88
87
86
85
84
83
82
81
80
79
78
77
76
75
74
TOP VIEW
I/O0-63
Data Inputs/Outputs
A0-16
Address Inputs
WE1-8
Write Enables
CS1-8
Chip Selects
OE
Output Enable
VCC
Power Supply
GND
Ground
NC
Not Connected
PIN DESCRIPTION