59.2.5 PIOs
| Signal Name | Recommended Pin Connection | Description | |
|---|---|---|---|
|
PAx PBx PCx PDx PEx |
Application dependent. (Pull up 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, except XIN32/XOUT32 (PA7/PA8) and XIN/XOUT (PB8/PB9). If XIN32/XOUT32 and XIN/XOUT are not used, they must be setup as outputs and attached to a dedicated trace to reduce current consumption. To reduce power consumption if not used, the concerned PIO can be configured as an output, driven at ‘0’ with internal pull up disabled. |