Can ESP32-s3 be operated with built-in PLL?

gunslinger
Posts: 1
Joined: Thu Nov 09, 2023 3:48 am

Can ESP32-s3 be operated with built-in PLL?

Postby gunslinger » Thu Nov 09, 2023 4:09 am

Hello all,

I am designing a board equipped with ESP32-S3 SOC.
Wireless function(Wifi & Bluetooth) is not used.

Is it possible to operate with the built-in PLL without an external oscillator?

if possible,I would like to know the frequency accuracy of the built-in PLL when not using an external oscillator.
I looked in the technical_reference_manual, but couldn't find any information.

ESP_Sprite
Posts: 9766
Joined: Thu Nov 26, 2015 4:08 am

Re: Can ESP32-s3 be operated with built-in PLL?

Postby ESP_Sprite » Fri Nov 10, 2023 1:00 am

No, you need a crystal.

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