Atom Pro pullup information

Lynxmotion Electronics & Software
1

The Atom Pro 28 has weak pullups on these pins only.

P0 PUCR5.bit0
P1 PUCR5.bit1
P2 PUCR5.bit2
P3 PUCR5.bit3
P4 PUCR5.bit4
P5 PUCR5.bit5
P8 PUCR1.bit5
P12 PUCR1.bit0
P16 PUCR1.bit1
P17 PUCR1.bit2
P18 PUCR1.bit7
P19 PUCR1.bit6

2

Set the appropriate bit to 1 to enable weak pullups on that pin.