58.6.1 External Clock Source
| Signal Name | Recommended Pin Connection | Description |
|---|---|---|
| XIN | XIN is used as input for an external clock signal | Input for inverting oscillator pin External Clock frequency range specified in the XOSC Electrical Specifications (XOSC_35 parameter) |
| XOUT/GPIO | Can be left unconnected or used as normal GPIO | NC/GPIO |