7.5.2 I/O Pins
After reset, the I/O pins are tri-stated except PC08 pin (configured as an input with pull-up enabled) which is by default assigned to the SWCLK peripheral function to allow debugger probe detection.
After reset, the I/O pins are tri-stated except PC08 pin (configured as an input with pull-up enabled) which is by default assigned to the SWCLK peripheral function to allow debugger probe detection.