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White Electronic Designs Corporation • (602) 437-1520 • www.whiteedc.com
WS256K32-XXX
TOP VIEW
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
60
59
58
57
56
55
54
53
52
51
50
49
48
47
46
45
44
9 8 7 6 5 4 3 2 1 68 67 66 65 64 63 62 61
27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43
I/O0
I/O1
I/O2
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
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/O29
I/O30
I/O31
FIG. 2
PIN CONFIGURATION FOR WS256K32-XG4X
PIN DESCRIPTION
I/O0-31
Data Inputs/Outputs
A0-17
Address Inputs
WE
Write Enable
CS1-2
Chip Selects
OE
Output Enable
VCC
Power Supply
GND
Ground
NC
Not Connected
BLOCK DIAGRAM
256K x 16
16
I/O 0-15
CS1
256K x 16
16
I/O 16-31
CS2
A 0 - 17
OE
WE