6.2.1 Oscillator Pinout

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

Table 6-2. Oscillator Pinout
OscillatorSupplySignalI/O pin
XOSCVDDIOXINPB22
XOUTPB23
XOSC32KVSWOUTXIN32PA00
XOUT32PA01
Note: In order to minimize the cycle-to-cycle jitter of the external oscillator, keep the neighboring pins as steady as possible. For neighboring pin details, refer to the Oscillator Pinout section.
Table 6-3. XOSC32K Jitter Minimization
PackageSteady Signal Recommended
L22NPB00, PB01, PB02, PB03, PC00, PC01
L22JPB00, PB01, PB02, PB03, PA02, PA03
L22GPB02, PB03, PA02, PA03