ESP32-S3

[Deepfried5]

I’m designing a PCB with multiple ESP32-S3’s. Is it possible to use a single 40Mhz oscillator for more then one chip?

[ahsrabrifat]

Possible but some conditions must be fulfilled. You CANNOT share a crystal between chips because each chip needs its own internal load capacitance network for oscillation.You CAN share a clock oscillator (an active device that outputs a square wave) with multiple chips, under proper conditions. If you're concerned about signal integrity or complexity with a single oscillator, consider using a dedicated oscillator for each ESP32-S3 chip, especially if you have RF components or other sensitive circuits on the same board. At 40 MHz, interference between signals can become a concern. Pay close attention to proper grounding and shielding techniques to minimize noise and crosstalk between the oscillator signal and other traces on the PCB. In case you also want to mase a ESP32-S3 development board, you can follow this design.
https://www.pcbway.com/project/sharepro ... 5f6ec.html

[Deepfried5]

Yeah I decided to go with individual crystals for each chip. Makes design a bit more complicated but once I seen the way I’d have to route the signals to all chips it made the decision easy.

[greengnu]

In case you also want to mase a ESP32-S3 development board, you can follow this design.
https://www.pcbway.com/project/sharepro ... 5f6ec.html

This link doesn't work, do you happen to have another link for this design?