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christoph239955_stm1_stmicro_c
christoph239955_stm1_stmicro_c
Associate
April 13, 2011
Question

STM32 and external (S)DRAM

  • April 13, 2011
  • 3 replies
  • 833 views
Posted on April 13, 2011 at 11:29

STM32 and external (S)DRAM

    This topic has been closed for replies.

    3 replies

    trevor23
    trevor23
    Associate III
    May 17, 2011
    Posted on May 17, 2011 at 14:31

    Can't be DRAM, must be SRAM. You can get 8M (4M x 16) e.g. CY62187EV30.

    This seems an ambitious project for a microcontroller such as the STM32 which isn't really that suited to running code from external memory.

    Tesla DeLorean
    Tesla DeLorean
    Guru
    May 17, 2011
    Posted on May 17, 2011 at 14:31

    Because external bus access is relatively slow, and the part doesn't have a cache.

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    christoph239955_stm1_stmicro_c
    christoph239955_stm1_stmicro_cAuthor
    Associate
    May 17, 2011
    Posted on May 17, 2011 at 14:31

    Thank you for the info about the SRAM module.

    Why is the STM32 not suited to running code from external memory?

    Do you see other options to run code from a SD-Card (or maybe an other Cortex-M3 microcontroller which is better suited for such thing)?

    Greets

    Christoph

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