# 144 pin SO DIMM

SO SIMM=Small Outline Single Inline Memory Module

(at the computer)

144 PIN SO SIMM at the computer.

Pin | Normal | ECC | Description
--- | --- | --- | ---
1 | VSS | VSS | Ground
2 | VSS | VSS | Ground
3 | DQ0 | DQ0 | Data 0
4 | DQ32 | DQ32 | Data 32
5 | DQ1 | DQ1 | Data 1
6 | DQ33 | DQ33 | Data 33
7 | DQ2 | DQ2 | Data 2
8 | DQ34 | DQ34 | Data 34
9 | DQ3 | DQ3 | Data 3
10 | DQ35 | DQ35 | Data 35
11 | VCC | VCC | +5 VDC
12 | VCC | VCC | +5 VDC
13 | DQ4 | DQ4 | Data 4
14 | DQ36 | DQ36 | Data 36
15 | DQ5 | DQ5 | Data 5
16 | DQ37 | DQ37 | Data 37
17 | DQ6 | DQ6 | Data 6
18 | DQ38 | DQ38 | Data 38
19 | DQ7 | DQ7 | Data 7
20 | DQ39 | DQ39 | Data 39
21 | VSS | VSS | Ground
22 | VSS | VSS | Ground
23 | /CAS0 | /CAS0 | Column Address Strobe 0
24 | /CAS4 | /CAS4 | Column Address Strobe 4
25 | /CAS1 | /CAS1 | Column Address Strobe 1
26 | /CAS5 | /CAS5 | Column Address Strobe 5
27 | VCC | VCC | +5 VDC
28 | VCC | VCC | +5 VDC
29 | A0 | A0 | Address 0
30 | A3 | A3 | Address 3
31 | A1 | A1 | Address 1
32 | A4 | A4 | Address 4
33 | A2 | A2 | Address 2
34 | A5 | A5 | Address 5
35 | VSS | VSS | Ground
36 | VSS | VSS | Ground
37 | DQ8 | DQ8 | Data 8
38 | DQ40 | DQ40 | Data 40
39 | DQ9 | DQ9 | Data 9
40 | DQ41 | DQ41 | Data 41
41 | DQ10 | DQ10 | Data 10
42 | DQ42 | DQ42 | Data 42
43 | DQ11 | DQ11 | Data 11
44 | DQ43 | DQ43 | Data 43
45 | VCC | VCC | +5 VDC
46 | VCC | VCC | +5 VDC
47 | DQ12 | DQ12 | Data 12
48 | DQ44 | DQ44 | Data 44
49 | DQ13 | DQ13 | Data 13
50 | DQ45 | DQ45 | Data 45
51 | DQ14 | DQ14 | Data 14
52 | DQ46 | DQ46 | Data 46
53 | DQ15 | DQ15 | Data 15
54 | DQ47 | DQ47 | Data 47
55 | VSS | VSS | Ground
56 | VSS | VSS | Ground
57 | n/c | CB0 |
58 | n/c | CB4 |
59 | n/c | CB1 |
60 | n/c | CB5 |
61 | DU | DU | Don't use
62 | DU | DU | Don't use
63 | VCC | VCC | +5 VDC
64 | VCC | VCC | +5 VDC
65 | DU | DU | Don't use
66 | DU | DU | Don't use
67 | /WE | /WE | Read/Write
68 | n/c | n/c | Not connected
69 | /RAS0 | /RAS0 | Row Address Strobe 0
70 | n/c | n/c | Not connected
71 | /RAS1 | /RAS1 | Row Address Strobe 1
72 | n/c | n/c | Not connected
73 | /OE | /OE |
74 | n/c | n/c | Not connected
75 | VSS | VSS | Ground
76 | VSS | VSS | Ground
77 | n/c | CB2 |
78 | n/c | CB6 |
79 | n/c | CB3 |
80 | n/c | CB7 |
81 | VCC | VCC | +5 VDC
82 | VCC | VCC | +5 VDC
83 | DQ16 | DQ16 | Data 16
84 | DQ48 | DQ48 | Data 48
85 | DQ17 | DQ17 | Data 17
86 | DQ49 | DQ49 | Data 49
87 | DQ18 | DQ18 | Data 18
88 | DQ50 | DQ50 | Data 50
89 | DQ19 | DQ19 | Data 19
90 | DQ51 | DQ51 | Data 51
91 | VSS | VSS | Ground
92 | VSS | VSS | Ground
93 | DQ20 | DQ20 | Data 20
94 | DQ52 | DQ52 | Data 52
95 | DQ21 | DQ21 | Data 21
96 | DQ53 | DQ53 | Data 53
97 | DQ22 | DQ22 | Data 22
98 | DQ54 | DQ54 | Data 54
99 | DQ23 | DQ23 | Data 23
100 | DQ55 | DQ55 | Data 55
101 | VCC | VCC | +5 VDC
102 | VCC | VCC | +5 VDC
103 | A6 | A6 | Address 6
104 | A7 | A7 | Address 7
105 | A8 | A8 | Address 8
106 | A11 | A11 | Address 11
107 | VSS | VSS | Ground
108 | VSS | VSS | Ground
109 | A9 | A9 | Address 9
110 | A12 | A12 | Address 12
111 | A10 | A10 | Address 10
112 | A13 | A13 | Address 13
113 | VCC | VCC | +5 VDC
114 | VCC | VCC | +5 VDC
115 | /CAS2 | /CAS2 | Column Address Strobe 2
116 | /CAS6 | /CAS6 | Column Address Strobe 6
117 | /CAS3 | /CAS3 | Column Address Strobe 3
118 | /CAS7 | /CAS7 | Column Address Strobe 7
119 | VSS | VSS | Ground
120 | /VSS | /VSS | Ground
121 | DQ24 | DQ24 | Data 24
122 | DQ56 | DQ56 | Data 56
123 | DQ25 | DQ25 | Data 25
124 | DQ57 | DQ57 | Data 57
125 | DQ26 | DQ26 | Data 26
126 | DQ58 | DQ58 | Data 58
127 | DQ27 | DQ27 | Data 27
128 | DQ59 | DQ59 | Data 59
129 | VCC | VCC | +5 VDC
130 | VCC | VCC | +5 VDC
131 | DQ28 | DQ28 | Data 28
132 | DQ60 | DQ60 | Data 60
133 | DQ29 | DQ29 | Data 29
134 | DQ61 | DQ61 | Data 61
135 | DQ30 | DQ30 | Data 30
136 | DQ62 | DQ62 | Data 62
137 | DQ31 | DQ31 | Data 31
138 | DQ63 | DQ63 | Data 63
139 | VSS | VSS | Ground
140 | VSS | VSS | Ground
141 | SDA | SDA |
142 | SCL | SCL |
143 | VCC | VCC | +5 VDC
144 | VCC | VCC | +5 VDC

Contributor: | Joakim Ögren, Mark Brown

Source: | Various productsheets at IBM Memory Products

Copyright © The Hardware Book Team 1996-2004.
May be copied and redistributed, partially or in whole, as appropriate.
Document last modified: 2002-01-10