Changes

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The MITO 8M Mini/Nano module uses a 32.768kHz dedicated crystal in order to obtain an accurate time base for the RTC.

On The Real Time Clock is kept operative through the MITO 8M Mini/Nano module PMIC_LICELL pin (J.14): the SNVS voltage rails are obtained by the main supply LICELL pin provides for a connection of the SOMa coin cell backup battery or a “super” capacitor.

For this reason, there is no possibility A small capacitor should be placed from LICELL to keep operative the CPU RTC when the SOM is not connected to the 3.3VIN power railground under all circumstances.

Use an external For more information about PMIC RTC with battery backup functionality if required, please refer to the [https://www.nxp.com/docs/en/data-sheet/PF8121.pdf PF8121] datasheet.