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stuart23
Visitor II
June 28, 2006
Question

Not using USB

  • June 28, 2006
  • 3 replies
  • 928 views
Posted on June 28, 2006 at 11:58

Not using USB

    This topic has been closed for replies.

    3 replies

    S
    stuart23Author
    Visitor II
    May 17, 2011
    Posted on May 17, 2011 at 09:30

    Hello

    I am using an STR911FM44X6 in a design which does not require the USB peripheral. Is it safe to leave the USB pins open or should they be tied to ground as per the rest of the unused port pins? (see MD's post on this issue)

    Stuart

    J
    jhshen
    Visitor II
    May 17, 2011
    Posted on May 17, 2011 at 09:30

    Hi,

    There is no problem to leave those pins open.

    A
    anis
    Visitor II
    May 17, 2011
    Posted on May 17, 2011 at 09:30

    Hi,

    It is recommended to leave USBDN not connected and put a pull-up of 1.5Kohm to VDDQ on USBDP.

    Best regards,

    STARM

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