Hardware pinouts information and cables schemes

SIMM (30 pin) pinout

memory connector

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SIMM=Single Inline Memory Module

30 pin SIMM connector layout

30 pin SIMM connector
at the computer



Pin Name Description
1VCC+5 VDC
2/CASColumn Address Strobe
3DQ0Data 0
4A0Address 0
5A1Address 1
6DQ1Data 1
7A2Address 2
8A3Address 3
9GNDGround
10DQ2Data 2
11A4Address 4
12A5Address 5
13DQ3Data 3
14A6Address 6
15A7Address 7
16DQ4Data 4
17A8Address 8
18A9Address 9
19A10Address 10
20DQ5Data 5
21/WEWrite Enable
22GNDGround
23DQ6Data 6
24A11Address 11
25DQ7Data 7
26QPData Parity Out
27/RASRow Address Strobe
28/CASPCAS Parity
29DPData Parity In
30VCC+5 VDC

Note: SIMM above is a 4MBx9.
QP & DP is N/C on SIMMs without parity.
A9 is N/C on 256kB.
A10 is N/C on 256kB & 1MB. A11 is N/C on 256kB, 1MB & 4MB.


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Pinouts.ru > Memory slots and cards connectors pinouts >  Pinout of SIMM (30 pin) and layout of 30 pin SIMM connector
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Source(s) of this and additional information:  comp.sys.ibm.pc.hardware.* FAQ Part 4, maintained by Ralph Valentino, from J. Ogren and Helfried Behre, comp.sys.ibm.pc.hardware.* FAQ Part 4, maintained by Ralph Valentino 1 reports
Last updated at Fri Jun 9 2006. Submit additions or corrections for this document. Is this document correct or incorrect? What is your opinion?
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