Dear PJRC Community,

I am trying to migrate Teensy 3.2 projects into the new Teensy 4.0, ideally using the same arduino firmware with compatible libraries should be compatible, and the performance theoretically might improve.

Actually, I have done the first prototypes, while the Teensy 4.0 seems to be better in performance, it randomly produce automatic resets, and then my software get unresponsive. I have tried multiple configurations on the frequency and there is not any relation with it.

I have checked the 3.3V OUTPUT, and it seems is randomly shutting its output.

The same firmware runs stable and properly in a Teensy 3.2.

What could you recommend to solve this issue? Please let us know what type of further information is required to analyze this.