PIOs

  Signal Name Recommended Pin Connection Description
 

PAx

PBx

PCx

PDx

PEx

Application dependent.

(Pullup at VDDIO if needed)

All PIOs are pulled-up inputs (100 kOhm) at reset except those which are multiplexed with Oscillators Drivers and Debug interface that require to be enabled as peripherals:

Refer to the column “Reset State” of the pin description tables in the section "Package and Pinout".

Schmitt trigger on all inputs.

To reduce power consumption if not used, the concerned PIO can be configured as an output, driven at ‘0’ with internal pullup disabled.