How should i connect SWD Pins as safety for EMC/EMI?

[ugurozkan52]

Hi Dear,

I connected as picture my SWD pins. What is best solution for SWD Pins? Sould i capasitor, TVS or safety component? Is there any guide for STM32?

 

 

 

 

 

[Ozone]

Normally you don’t need EMI protection for the debug interface, the SWD/JTAG lines have system voltage level, and are short.
The debug adapter works at the same voltage level (3.3V), so interferences are very unlikely.

If you have a very EMI-prone environment like motor control or another kind of driver for large inductivities, I would recommend an isolated debug interface.

As far as I understand it (I am not a hardware guy), these isolated debug adapters are intended to protect the debug adapter and the host, not the target.