The SAM G53 Xplained Pro kit contains one mounted 32kHz crystal and
a footprint for a second crystal. The crystal circuit 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 application note AVR4100.
Table 1. External 32.768kHz
Crystal| Pin on SAM G53 |
Function |
|---|
| PA07 |
XIN32 |
| PA08 |
XOUT32 |
Table 2. Footprint for Additional
Crystal| Pin on SAM G53 |
Function |
|---|
| PB09 |
XIN |
| PB08 |
XOUT |