XMEGA A1U

4.2.1 Crystal

The XMEGA A1U Xplained Pro kit contains one crystal that can be used as clock source for the XMEGA 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 4-6. External 32.768kHz Crystals
Pin on XMEGA	Function
PQ0	XIN32 (TOSC1)
PQ1	XOUT32 (TOSC2)

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