Microcontroller output is open drain?

[eem2am]

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

 

[wally98]

To my understanding they are most likely push-pulls

 

[BobK]

Read section 26.5.6

Bob