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 1. External 32.768kHz Crystals
Pin on XMEGA Function
PQ0 XIN32 (TOSC1)
PQ1 XOUT32 (TOSC2)
Parent topic: Peripherals