4.2 Oscillators Pinout

The oscillators are not mapped to the I/O Pin Controller (PORT) functions and their multiplexing is controlled by the Oscillators Controller (OSCCTRL) and 32 kHz Oscillators Controller (OSC32KCTRL) registers.

Table 4-2. Oscillator Pinout
Oscillator Supply Signal I/O pin
XOSC VDDIO XIN PA14
XOUT PA15
XOSC32K VDDANA XIN32 PA00
XOUT32 PA01

The transition time of the following pins must be greater than 50us in order to not affect the XOSC32 cycle to cycle jitter:

Table 4-3. XOSC32 Jitter Minimization
Package Pin Name
TQFP32 / VQFN32 / VQFN24 / SSOP24 PA02, PA31
WLCSP32 PA30