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andykim
andykim
Associate II
December 3, 2013
Question

9bit SPI Interface

  • December 3, 2013
  • 3 replies
  • 746 views
Posted on December 03, 2013 at 09:26

Hi.

I want to know that there are any MCU which support 9 bit SPI interface.

Do you know that?

I will wait for your answer.

Thanks.
    This topic has been closed for replies.

    3 replies

    Andrew Neil
    Andrew Neil
    Super User
    December 3, 2013
    Posted on December 03, 2013 at 13:07

    Do you mean any MCU at all, or is there a particular family/subset you're interested in?

    Have you looked at any datasheets?
    A complex system that works is invariably found to have evolved from a simple system that worked.A complex system designed from scratch never works and cannot be patched up to make it work.
    Tesla DeLorean
    Tesla DeLorean
    Guru
    December 3, 2013
    Posted on December 03, 2013 at 15:32

    I got a couple of SoC designs that work from 1-to-32 bits. The STM32F0 and STM32F3 parts support 9-bit configurations.

    On other parts you can play games with sending 9x 8-bit bytes, or simply bit-banging the bus.

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    zzdz2
    zzdz2
    Associate
    December 4, 2013
    Posted on December 04, 2013 at 09:21

    It's possible to bit bang 1 bit and send 8 bits with hardware, tricky but works.

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