144 pin SO DIMM Memory Module Pinout


[144-Pin SODIMM] [144-Pin EDO SODIMM]
[72-Pin EDO SODIMM]

Personal Computer Memory Module description, 144 pin SODIMM Pin out. The 144-pin SODIMM has 72 pins per PWB side.
The table may be misleading because it's in one column; the board pinout for the Front side are the odd pins 1 to pin# 143.
The back side [reverse side on the board] pinout are the even pins from 2 to pin 144. Most or all of the IC's are on the front side.
SODIMM memory modules would be found in portable Computers; Laptops, Notebooks, Mobile Work-Stations or embedded applications.





144-Pin SODIMM PinOut
Pin # Normal name ECC name Pin Description
1 GND GND Ground
2 GND GND 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 +3.3 VDC
12 VCC VCC +3.3 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 GND GND Ground
22 GND GND 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 +3.3 VDC
28 VCC VCC +3.3 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 GND GND Ground
36 GND GND 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 +3.3 VDC
46 VCC VCC +3.3 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 GND GND Ground
56 GND GND Ground
57 RSVD CB0  
58 RSVD CB4  
59 RSVD CB1  
60 RSVD CB5  
61 CK0 RFU Reserved for Future Use
62 CKE0 RFU Reserved for Future Use
63 VCC VCC +3.3 VDC
64 VCC VCC +3.3 VDC
65 /RAS RFU Reserved for Future Use
66 /CAS RFU Reserved for Future Use
67 /WE /WE Read/Write
68 CKE1 RFU Reserved for Future Use
69 /RAS0 /RAS0 Row Address Strobe 0
70 A12 RFU Reserved for Future Use
71 /RAS1 /RAS1 Row Address Strobe 1
72 A13, DSF RFU Reserved for Future Use
73 NU /OE Output Enable
74 CK1 RFU Reserved for Future Use
75 GND GND Ground
76 GND GND Ground
77 RFU CB2  
78 RFU CB6  
79 RFU CB3  
80 RFU CB7  
81 VCC VCC +3.3 VDC
82 VCC VCC +3.3 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 GND GND Ground
92 GND GND 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 +3.3 VDC
102 VCC VCC +3.3 VDC
103 A6 A6 Address 6
104 A7 A7 Address 7
105 A8 A8 Address 8
106 BA0 BA0 -
107 GND GND Ground
108 GND GND Ground
109 A9 A9 Address 9
110 BA1 BA1 -
111 A10/AP A10 Address 10
112 A11 A11 Address 11
113 VCC VCC +3.3 VDC
114 VCC VCC +3.3 VDC
115 DQMB2 DQMB2 -
116 DQMB6 DQMB6 -
117 DQMB3 DQMB3 -
118 DQMB7 DQMB7 -
119 GND GND Ground
120 GND GND 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 +3.3 VDC
130 VCC VCC +3.3 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 GND GND Ground
140 GND GND Ground
141 SDA SDA Serial Data Line
142 SCL SCL Serial Clock Line
143 VCC VCC +3.3 VDC
144 VCC VCC +3.3 VDC

Data width is 64 bits per memory stick [the front side 72 pins are not connected together with the back side 72 pins].
Note: /CAS# is also DQMB#. The pinout for the Normal name is good, watch the differences with the ECC pin out.





72-pin SODIMM Memory Module picture used to represent a 144-pin

The approximate PWB size. 2.625" x 1.0"

Memory Module Acronyms
SIMM: Single Inline Memory Module
DRAM: Dynamic Random Access Memory
SO DIMM: Small Outline Dual Inline Memory Module
EDO: Extended Data Out: (asynchronous) A superset of FPM, just faster than FPM.
The 144 pin SODIMMs have an alignment notch on the bottom [left] center side.
All 144 pin SODIMMs use either EDO, 66MHz SDRAM, PC100 SDRAM, or PC133 SDRAM memory.
This page provides pinout details for PC100 /PC133 SDRAM modules.

These devices are LVTTL [3.3 volt] compatible.

Example Memory Speed and Size
Speed Capacity Description
PC100 32MB 4M x 64 Bits
PC100 / PC133 64MB 8Mx64 Bits
PC100 / PC133 128MB 16M x 64 Bits
PC100 / PC133 256MB 32M x 64 Bits

Back to the main Computer Memory Modules information page for a description of memory stick types and module speed.
For electronic device manufacturers see one of these pages: Memory IC manufacturers, or Memory Module manufacturers
Electronic Equipment manufacturers are found by selecting the OEM Equipment icon below, component manufacturers by selecting the Components icon.


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Modified 7/16/2015
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