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MMC / SD Spi Interface

Discussion in 'Electronic Design' started by Ezmeralda, May 16, 2007.

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  1. Ezmeralda

    Ezmeralda Guest


    what is the maximum possible speed on SPI Interface for MMC and SD
    Is there any difference between the cards? Is it possible to do SPI
    with the new high speed rates defined ~50MHz or is the high speed rate
    via parallel interface only?

  2. Donald

    Donald Guest

    Conversion of parallel to serial (SPI) is done all the time.

    The question is how do you want to do it ?

    Are you looking for an off-the-shelf solution or
    do you want to design, build, troubleshoot your own.


    PS: I have not seen a off-the-shelf parallel to MMC/SD device.

    PPS: Speed of download to an SD card is only part of the time involved,
    there is also internal burn timing to consider.

    good luck
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