I set the fuse bit for active a BOD function of ATxmega128A1.
after this work, one of five devices is not able to work. The writing and reading by JTAGICE3 is not possible, too.
The following error message comes out when I perform Device signature.
Unable to enter programming mode.
Please verify device selection, interface settings, target power and connections to the target device. Look in the details section for more information.
Timestamp: 2015-04-20 15:37:06.599
PDI enable failed. Debugger command Activate physical failed.
Unable to enter programming mode. Verify device selection, interface settings, target power and connections to the target device.
I hope that I have you instruct the solution to this phenomenon.