PRELIMINARY
PDM4M3120
Pin Configuration(1)
Pin Assignment
Pin
Signal
1
3
NC
PD0 - Vss
I/O31-I/O0
A19-A0
CS4-CS1
WE
Data Inputs/Outputs
Addresses
2
NC
PD3
PD0
I/O0
I/O1
I/O2
I/O3
Vcc
A7
PD2
Vss
PD1 - NC
PD2 - Vss
PD3 - NC
4
5
Chip Selects
Write Enable
Output Enable
Depth Identification
Power
6
7
PD1
I/O8
I/O9
I/O10
I/O11
A0
8
9
OE
10
12
14
16
18
20
22
24
26
28
30
32
34
36
11
13
15
17
19
21
23
25
27
29
31
33
35
PD3-PD0
V
V
CC
SS
Ground
A1
A8
A2
A9
I/O12
I/O13
I/O14
I/O15
Vss
I/O4
I/O5
I/O6
I/O7
WE
A15
CS2
A14
CS1
ZIP, SIMM
TOP VIEW
37
39
41
43
45
47
49
51
53
55
57
59
61
63
65
67
69
71
CS4
A17
OE
38
40
42
44
46
48
50
52
54
56
58
60
62
64
66
68
70
72
CS3
A16
Vss
I/O24
I/O25
I/O26
I/O27
A3
I/O16
I/O17
I/O18
I/O19
A10
A4
A11
A5
A12
Vcc
A13
A6
I/O20
I/O21
I/O22
I/O23
Vss
I/O28
I/O29
I/O30
I/O31
A18
NC
A19
NC
NOTE: 1. Pins 3, 4, 6, and 7 (PD0, PD1, PD02, and PD3
respectively) are read by the user to determine the
density of the module. If PD0 reads V , PD1 reads
SS
NC, PD2 reads V , PD3 reads NC then the mod-
SS
ule has a 1M depth.
2
Rev 1.1