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ESP32C3 USB JTAG circuitry

Posted: Thu Dec 26, 2024 2:35 pm
by Helge.Suess
Hi!

I am designing a PCB that features an ESP32-C3 mini 1 module. What additional components do I need to provide to use USB JTAG for flashing the device?
Do I need pull-up or pull-down resisitors and capacitors for D+ and D- lines? If yes, what are recommended values?

The code was developed using the Arduino IDE and an XSEED XIAO ESP32C3 module for prototyping.

Is there any preparation required (e.g. burning fuses) to enable flashing through USB JTAG before soldering?
Which additional pads should I provide to be available as e.g. test points? EN? IO9? Other strap pins?

TIA,
Helge