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MMC cards and AVR Microcontroller

Discussion in 'Electronic Design' started by [email protected], Aug 25, 2006.

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  1. Guest

    hi,
    I'm in need of using mmc or sd memmory card in my project but
    unfortunatly i don't have any idea how they works?
    i know they need 3.3 v for working. should this voltage be percise?
    I want to read and also write on it in spi mode using an avr. I've used
    the programm suggested in some relevant sites but it seems there is a
    bug in those programmes or mey be i can't used them properly.could
    anyone introduce me a reliable source on this issue?
    meny thanks
     
  2. Loads of good info at:

    http://www.mcselec.com/index2.php?option=com_forum&Itemid=59&page=viewforum&f=9

    And lots of card details from:

    http://en.wikipedia.org/wiki/Secure_Digital_card

    --
    Regards,

    Adrian Jansen adrianjansen at internode dot on dot net
    Design Engineer J & K Micro Systems
    Microcomputer solutions for industrial control
    Note reply address is invalid, convert address above to machine form.
     
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