LPO Frequency deviation - RTC scalling | S32K146

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LPO Frequency deviation - RTC scalling | S32K146

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jan_glos
Contributor I

Hi all,

I have question regarding LPO frequency in S32K146, I couldn't find any details about thermal compensation and frequency deviation during run-time.

I'm obligated to use LPO oscillator in RTC unite - it's only way during VLPS(without external oscillator 32, 768 kHz).

In case of big frequency fault (~10%) I will use LPO trimming but I want to know - how the system works while temperature changes.

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Another question is the best practices during automatic RTC scaling before entering LPO mode, if you have any working way, please share it.

Thank you in advance, Jan

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