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).
Oscillator | Supply | Signal | I/O pin |
---|---|---|---|
XOSC | VDDIO | XIN | PA14 |
XOUT | PA15 | ||
XOSC32K | VSWOUT | XIN32 | PA00 |
XOUT32 | PA01 |
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:
Package Pin Count | Static Signal Recommended |
---|---|
64 | PB00, PB01, PB02, PB03, PA02, PA03 |
48 | PB02, PB03, PA02, PA03 |
32 | PA02, PA03 |
References: