User manual

Atmel SAM D21 Xplained Pro [USER GUIDE]
42220A-MCU-02/2014
9
Pin number PWR header Pin name Description
4 VCC_P3V3 Regulated 3.3V (output, used as
main power for the kit)
Note
If the board is powered from a battery source it is recommended to use the PWR header. If there
is a power source connected to EDBG USB, the EDBG is activated and it will consume more
power.