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F28335 Internal pullup resistors

Dan Murdock
Prodigy 10 points

What is the component value of the pullup resistors that can be enabled/disabled by the GPAPUD (B,C) register?

  • 0
    TI__Guru 61235 points

    Dan,

    The internal pullups are active circuits, and not just resistors.  They are spec'd in terms of current.  See the F2833x datasheet sprs439m, section 6.3, page 117.  The pullups require about 140 uA to override, and the pulldowns about 50 uA to override, typical.

    Regards,

    David