Thread: Digital IO pull-ups/downs
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Unread 16-10-2014, 12:41
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Re: Digital IO pull-ups/downs
The DIO signal pins are pulled up to 3.3V by a weak 40k resistor. DIO 14 and 15 on the MXP are pulled up to 3.3V with 2.1k resistors for use with I2C.

http://www.ni.com/pdf/manuals/376099a.pdf, page 8.