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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

    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:

    And lots of card details from:


    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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