6.2.2 Serial Wire Debug Interface Pinout

Only the SWCLK pin is mapped to the normal PORT functions. A debugger cold-plugging or hot-plugging detection will automatically switch the SWDIO port to the SWDIO function.

Table 6-4. Serial Wire Debug Interface Pinout
Signal Supply I/O pin
SWCLK VDDIO PA30
SWDIO VDDIO PA31