12MHz Crystal Selection

The selected 12MHz crystal FQ5032B-12-C-C-C-200-1 has a load of 20pF, this is outside the recommended range of 12.5pF to 17.5pF in the ATSAMV71Q21 datasheet. Using a crystal with loads outside the recommended range can cause instability when operating the device close to maximum/minimum parameters for supply voltage and temperature.

None, any new design should select a crystal within the limits specified in the datasheet.