Hi all, i have an issue on a product which is basically a 12V DC motor controller.
Recently i have had some boards returned and the flash has been corrupted.
Reprogramming the board fixes the issue and all works well again.
I would suggest this is happening when a motor jams and large currents are drawn.
I dont have a boot loader.
I have the BOD enabled.
My FAE suggested that it could be caused by noise on the PDI pin causing the flash to be written too.
I normally leave the programming header pins not tied to to anything as the PDI pin has internal pull down.
Has anyone ever heard of this issue.
Should i tie the programming pin to gnd or Vcc ?
Thanks in advance