23.2.3.1 Clocks
System clock (CLK_PER) is required to be at least four times faster than RTC clock (CLK_RTC) for reading counter value, and this is regardless of the RTC_PRESC setting.
System clock (CLK_PER) is required to be at least four times faster than RTC clock (CLK_RTC) for reading counter value, and this is regardless of the RTC_PRESC setting.
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