Esp32-P4 VBAT pin

[allexok]

Hello guys,
does anyone know what is the purpose of Esp32-P4 VBat pin? Is it for some sort of RTC battery? Or the whole chip can be powered from it? Can it be left floating if no battery is connected? Are there additional funtions(For example, maybe it's internally connected to ADC, so the battery voltage can be measured)? In the preliminary datasheet it's labeled as Battery power supply.
Alex

[ESP_Sprite]

From what I recall, the P4 can power (parts of) the RTC power domain from a battery, so it's probably the supply voltage for that. Docs on the RTC are still being written, so I don't have that much more info, sorry.

[allexok]

From what I recall, the P4 can power (parts of) the RTC power domain from a battery, so it's probably the supply voltage for that. Docs on the RTC are still being written, so I don't have that much more info, sorry.

Cool, thanks, any info is bettter than nothing:)