CAP1 and CAP2 rc circuit functionality

[damian]

I have doubts about the function of the RC circuit connected to CAP1 and CAP2. The only words about it are in ESP32 Hardware Design Guidelines :

Removing the RC circuit may slightly affect ESP32 in Deep-sleep mode

So the rc circuit is involved in the 8MHz internal oscillator used in deep-sleep mode?
If I never go in deep-sleep mode can I leave CAP1 and CAP2 unconnected?
Thanks!!

[chris1seto]

Hi, I am also wondering about this. Bump!

[damian]

After some experiments I saw that the removal of this RC circuit doesn't affect anything visible (I note that I don't use deep sleep in my application).
However I hope that the functionality of this circuit will be explained in an upcoming release of the official technical documentation.

[ESP_krzychb]

Explanation is provided in https://esp32.com/viewtopic.php?f=12&t= ... 278#p29278

[damian]

Thanks krzychb.