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  1. #1
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    72 pin SIMM pinout and circuit

    Hi to all,

    I do not understand what is the correct pinout of the old 72 pin SIMM memories, some of the documents that I have found are conflicting for some PINs.

    I am creating a project to drive several SIMMs with one FPGA, could you show me some reference scheme?

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  2. #2
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    Re: 72 pin SIMM pinout and circuit

    Hi,

    If you are the designer, the you should give specifications.
    Otherwise we could guess a hundred posts....

    Klaus
    Please don´t contact me via PM, because there is no time to respond to them. No friend requests. Thank you.



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  3. #3
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    Re: 72 pin SIMM pinout and circuit

    Hi see these documents:

    https://pinouts.ru/Memory/Simm72_pinout.shtml
    https://allpinouts.org/pinouts/conne...mm-ecc-72-pin/

    PIN 19 is Not connected or is Address10?
    PIN 29 is Address11 or Data16?
    PIN 41 is /CAS1 or Address10?

    And so on..



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  4. #4
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    Re: 72 pin SIMM pinout and circuit

    If you experience contradicting hearsay specs, why not refer to major manufacturers datasheets instead?



  5. #5
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    Re: 72 pin SIMM pinout and circuit

    Hi,

    A fully agree with FvM.
    The first results of a simple internet search "simm sdram specification" leads you the big manufacturers... and reliable informations.

    Klaus
    Please don´t contact me via PM, because there is no time to respond to them. No friend requests. Thank you.



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