4.3.2 Crystal
The ATtiny3217 Xplained Pro kit contains a 32.768 kHz crystal, which can be used as the clock source for the ATtiny3217 device. The crystal has a cut-strap next to it, which 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 the AN2648 application note from Microchip.
There is a 9 pF, 32.768 kHz crystal in a 3.2 mm by 1.5 mm package mounted on ATtiny3217 Xplained Pro.
ATtiny3217 Pin | Function |
---|---|
PB2 | XOUT32 |
PB3 | XIN32 |