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Microcontroller output is open drain?

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Discussion in 'Microcontrollers, Programming and IoT' started by eem2am, May 11, 2013.

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  1. May 11, 2013 #1
    eem2am

    eem2am

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    Aug 3, 2009
    Hello,

    Is the PA20 and PA21 pins of the Atmel SAM3N00B microcontroller open drain outputs or push-pull?

    I can't tell from page 8 of the datasheet (it seems to suggest that pull up resistors are needed to take the pins high?)......


    SAM3N00B MICROCONTROLLER DATASHEET:
    http://www.atmel.com/Images/doc11011.pdf
     
  2. May 11, 2013 #2
    wally98

    wally98

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    May 11, 2013
    To my understanding they are most likely push-pulls
     
  3. May 13, 2013 #3
    BobK

    BobK

    7,682
    1,688
    Jan 5, 2010
    Read section 26.5.6

    Bob
     
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