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Minimal Vbat voltage to keep RTC time on MK64/66 MCUs?

Question asked by Vladimir Blanshey on Jun 26, 2018
Latest reply on Jun 28, 2018 by Jorge Antonio Alcala Vazquez

Hi, there is MK64 datasheet table "VBAT power operating requirements" which seems to imply the answer to my question but the meaning of the variable shown there is not obvious and there is no description of that spec. What is "VPOR_VBAT -> Falling VBAT supply POR detect voltage" ? How does it relate to the table's title "VBAT power operating requirements" ?


Will RTC clock be maintained when powering down the main power Vdd and keeping a button battery voltage ~1.5 V on Vbat?