21.4 Signal Description

SignalDescriptionType
XIN32Analog Input32.768 kHz Crystal Oscillator or external clock input
XOUT32Analog Output32.768 kHz Crystal Oscillator output

The I/O lines are automatically selected when XOSC32K is enabled and do not need to be configured by the user. The external 32.768 kHz crystal must be connected between the XIN32 and XOUT32 pins, along with any required load capacitors.