Have you seen this -
Also followed the recommendations for bypassing in the datasheet ?
Well, yes I did.
I connected each capacitance and JTAG close to the µC, the VCCD is connected with a short trace...
The only difference with the example and my schematic is that they put 1µF on Vddd and Vdda, It can be the problem?
Connections2.png 112.9 K