As part of an evaluation of the ATxmega256A3BU, it can be of interest to measure its power consumption. Because the XMEGA has a separate power plane (VCC_MCU_P3V3) on this board it is possible to measure the current consumption by measuring the current that is flowing into this plane. The VCC_MCU_P3V3 plane is connected via a jumper to the main power plane (VCC_P3V3) and by replacing the jumper with an amperemeter it is possible to determine the current consumption. To locate the power measurement header, please refer to the figure in Kit Overview.
Warning
WARNING, do not power the board without having the jumper or an amperemeter mounted since this can cause latch-up of the ATxmega256A3BU due to current flow into the I/O pins.