19.4 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.

CAUTION: The transition time of the following pins must be greater than 50µs in order to not affect the XOSC32 cycle to cycle jitter.
Table 19-1. XOSC32K Jitter Minimization
Package Pin Name
TQFP48 / VQFN48PA02, PB03
TQFP64 / VQFN64PA02, PB03
TQFP100PC00, PB03