ESP32 Forum

I notice the supply for the RTC is also connected to the general 3V3 supply on the schematic for the ESP32-C3-MINI-1-H4 module.

If i supply 3.3V power to the ESP32-C3-MINI-1-H4 but have the enable line low, so chip disabled, will the RTC keep on running if it has been set previously?

Or for the RTC to remain functioning but the chip powered down will I need to create my own layout to break out the RTC 3V3 pin and therefore I wont be able to use the ESP32-C3-MINI-1-H4 module?

Thanks

Neither. The ESP32C3 needs to have all 3.3V power pins powered at the same time, it's not possible to power the RTC domain separately. Disabling the chip using EN will shut down the entirety of the chip, including the RTC. To make use of the RTC in low power mode, you need to use software to put the chip into deep sleep.