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How to interface flash memory cards to microcontroller for external memory excess?

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  • partha pabbu
    hi friends, Can you plz gude for this question. How to interface flash memory cards to microcontroller for external memory excess? Thank you chaitanya ...
    Message 1 of 9 , Aug 1, 2006
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      hi friends,
      Can you plz gude for this question.
      How to interface flash memory cards to microcontroller for external memory excess?
      Thank you
      chaitanya


      ---------------------------------
      Here’s a new way to find what you're looking for - Yahoo! Answers

      [Non-text portions of this message have been removed]
    • partha pabbu
      hi friends, Can you plz gude for this question. How to interface flash memory cards to microcontroller for external memory excess? Thank you chaitanya ...
      Message 2 of 9 , Aug 1, 2006
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        hi friends,
        Can you plz gude for this question.
        How to interface flash memory cards to microcontroller for external memory excess?
        Thank you
        chaitanya


        ---------------------------------
        Here’s a new way to find what you're looking for - Yahoo! Answers

        [Non-text portions of this message have been removed]
      • partha pabbu
        hi friends, Can you plz gude for this question. How to interface flash memory cards to microcontroller for external memory excess? Thank you chaitanya ...
        Message 3 of 9 , Aug 1, 2006
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          hi friends,
          Can you plz gude for this question.
          How to interface flash memory cards to microcontroller for external memory excess?
          Thank you
          chaitanya


          ---------------------------------
          Here’s a new way to find what you're looking for - Yahoo! Answers

          [Non-text portions of this message have been removed]
        • partha pabbu
          hi friends, Can you plz gude for this question. How to interface flash memory cards to microcontroller for external memory excess? Thank you chaitanya ...
          Message 4 of 9 , Aug 1, 2006
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            hi friends,
            Can you plz gude for this question.
            How to interface flash memory cards to microcontroller for external memory excess?
            Thank you
            chaitanya


            ---------------------------------
            Here’s a new way to find what you're looking for - Yahoo! Answers

            [Non-text portions of this message have been removed]
          • partha pabbu
            hi friends, Can you plz gude for this question. How to interface flash memory cards to microcontroller for external memory excess? Thank you chaitanya ...
            Message 5 of 9 , Aug 1, 2006
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              hi friends,
              Can you plz gude for this question.
              How to interface flash memory cards to microcontroller for external memory excess?
              Thank you
              chaitanya


              ---------------------------------
              Here’s a new way to find what you're looking for - Yahoo! Answers

              [Non-text portions of this message have been removed]
            • partha pabbu
              hi friends, Can you plz gude for this question. How to interface flash memory cards to microcontroller for external memory excess? Thank you chaitanya ...
              Message 6 of 9 , Aug 1, 2006
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                hi friends,
                Can you plz gude for this question.
                How to interface flash memory cards to microcontroller for external memory excess?
                Thank you
                chaitanya


                ---------------------------------
                Here’s a new way to find what you're looking for - Yahoo! Answers

                [Non-text portions of this message have been removed]
              • partha pabbu
                hi friends, Can you plz gude for this question. How to interface flash memory cards to microcontroller for external memory excess? Thank you chaitanya ...
                Message 7 of 9 , Aug 1, 2006
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                  hi friends,
                  Can you plz gude for this question.
                  How to interface flash memory cards to microcontroller for external memory excess?
                  Thank you
                  chaitanya


                  ---------------------------------
                  Here’s a new way to find what you're looking for - Yahoo! Answers

                  [Non-text portions of this message have been removed]
                • BobGardner@aol.com
                  Can you plz gude for this question. How to interface flash memory cards to microcontroller for external memory excess? =====================================
                  Message 8 of 9 , Aug 1, 2006
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                    Can you plz gude for this question. How to interface flash memory cards to microcontroller for external memory excess?
                    =====================================
                    Usually they have a serial interface that uses a clock line and a data line. Most microcontrrollers have an SPI interface that automatically shifts out the clock and data, but it is also possible to write a subroutine that shifts each bit out and sets the clk line hi then lo for each bit (usually called 'bitbanging'). So just study the data sheet for the memory card and the microcontroller to see which lines need to connect to what on the memory card, then write subroutines to so the low level read write functions described in the datashett... read a sector, write a sector... usually just a loop of reading or writing 524 bytes, or however many bytes in the memory card block. Sound easy so far?
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                  • David Kelly
                    ... That is true for many FLASH storage chips such as the Atmel AT45DB011. FLASH memory cards such as Compact Flash have a parallel bus interface which is a 50
                    Message 9 of 9 , Aug 1, 2006
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                      On Tue, Aug 01, 2006 at 01:08:18PM -0400, BobGardner@... wrote:
                      > > Can you plz gude for this question. How to interface flash memory
                      > > cards to microcontroller for external memory excess?
                      > =====================================
                      > Usually they have a serial interface that uses a clock line and a data
                      > line.

                      That is true for many FLASH storage chips such as the Atmel AT45DB011.
                      FLASH memory cards such as Compact Flash have a parallel bus interface
                      which is a 50 pin version of PCMCIA which is similar to a 16 bit ISA bus
                      but with working hot swap and plug-and-play.

                      --
                      David Kelly N4HHE, dkelly@...
                      ========================================================================
                      Whom computers would destroy, they must first drive mad.
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