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ptsmith
Visitor II
July 1, 2009
Question

unbonded pins

  • July 1, 2009
  • 3 replies
  • 946 views
Posted on July 01, 2009 at 14:25

unbonded pins

    This topic has been closed for replies.

    3 replies

    P
    ptsmithAuthor
    Visitor II
    May 17, 2011
    Posted on May 17, 2011 at 15:03

    How should unbonded pins be configured? For example, Port H0 is on pin 13 of an STM8S208 in the LQFP80 package, but is not present on the LQFP64 package. Should it be setup as an output with a Data value of ''0'' ? Or just ignored?

    Paul Smith

    Indiana University Physics

    M
    mozra27
    Visitor II
    May 17, 2011
    Posted on May 17, 2011 at 15:03

    Hi Paul,

    Some GPIO pins are not available in the small package, the corresponding I/Os are accessible to configure them by software and the configure by default is input floating no external interrupt.

    Regards

    mozra

    G
    good2dog
    Visitor II
    May 17, 2011
    Posted on May 17, 2011 at 15:03

    as you can see, all the port pads that can be unbonded have weak pullup; they are in some way activated by HW (in ST7 this is done by option byte).

    hi-z input can't be leaved floating.

    regards

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