RTC of ESP32-WROOM-32E
Posted: Sun May 02, 2021 4:06 am
I would like to understand is it a way to power internal RTC from the battery (e.g. CR2032) on the new ESP32-WROOM-32E, to guarantee that internal RTC will work if 220V power is down? It's a pity that we must use an additional RTC chip and external crystal clock while ESP32-WROOM-32E already has them.
Thank you.
Thank you.