Crystal

The SAM D20 Xplained Pro kit contains one crystals that can be used as clock source for the SAM D20 device. The crystal has a cut-strap next to it that can be used to measure the oscillator safety factor. This is done by cutting the strap and adding a resistor across the strap. More information about oscillator allowance and safety factor can be found in appnote AVR4100.

Table 1. External 32.768kHz Crystal
Pin on SAM D20 Function
PA00 XIN32
PA01 XOUT32
Parent topic: Peripherals