MBedder
Make sure you have configured all unused pins as outputs. The pins which were left floating do readily grab the EMI which can easily cause resets and other unwanted effects especially on the high speed EP series MCU.
Just now I`m implementing this in code. Since it only happen once or so a day, it is very time consuming to find if the error is still available. Let's hope this makes a change.
maxruben
What about Vcap?
Also implemented, right value. Also tried -just to be sure- to add extra caps on the Vcap. No change.
DarioG
In my opinion, since "EP" series by Microchip do have some subtle differences in instructions, this could be a matter of code...
We did an entire code look through. We are only using SPI, Timer and UART. No ADC, PWM or other onboard features.