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angelo
Visitor II
July 30, 2009
Question

High Sink on ST72F264 BGA pin PA3

  • July 30, 2009
  • 2 replies
  • 732 views
Posted on July 30, 2009 at 06:18

High Sink on ST72F264 BGA pin PA3

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    2 replies

    A
    angeloAuthor
    Visitor II
    July 30, 2009
    Posted on July 30, 2009 at 06:18

    I need to be able to power up a peripheral on PA3 at 3.0V and 15mA when Vdd of the F264 is 3.0V. Is that doable? PA3 will typically be low, but when it goes high can it provide the 15mA without sagging it's output below 5% of Vdd. No other outputs will need High Current.

    N
    Nickname13136_O
    Visitor II
    March 28, 2011
    Posted on March 28, 2011 at 14:35

    You can't source 15mA current from ST72F264 device. Even if you source 5mA current at Vdd = 5V, there is drop in output from IO which is ~4.2V. Which is not within 5% range.

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