28.4.1 Slow RC Oscillator (32 kHz typical)

The slow RC oscillator is a permanent clock that is the source clock of MD_SLCK and the default source clock of TD_SLCK.

Compared to the 32.768 kHz crystal oscillator, this oscillator offers a faster start-up time and is less exposed to the external environment, as it is fully integrated. However, its output frequency is subject to larger variations with supply voltage, temperature and manufacturing process. Therefore, the user must take these variations into account when this oscillator is used as a time base (start-up counter, frequency monitor, etc.). Refer to the section “Electrical Characteristics”.