7.2.1 Oscillator Pinout

The oscillators are not mapped to the normal PORT functions and their multiplexing are controlled by registers in the Oscillators Controller (OSCCTRL) and in the 32 kHz Oscillator Controller (OSC32KCTRL).

Table 7-2. Oscillator Pinout
OscillatorSupplySignalI/O pin
XOSCVDDIOXINPA14
XOUTPA15
XOSC32KVSWOUTXIN32PA00
XOUT32PA01
Note: To improve the cycle-to-cycle jitter of XOSC32, it is recommended to keep the neighboring pins of XIN32 and XOUT32 pins as static as possible as shown in the table below:
Table 7-3. XOSC32 Jitter Minimization
Package Pin CountStatic Signal Recommended
64PB00, PB01, PB02, PB03, PA02, PA03
48PB02, PB03, PA02, PA03
32PA02, PA03

References:

Schematic Checklist

External Real time Oscillator