User manual

Atmel AVR1923
5
8394B-AVR-02/12
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 Figure 3-1.
WARNING Do not power the board without having the jumper or an amperemeter
mounted since this can cause latch-up of the Atmel AVR
ATxmega256A3BU due to current flow into the I/O pins.
3.4 Programming the kit
The kit can be programmed either from an external programming tool or through an
USB boot loader which is pre-programmed on the device.
The boot loader is evoked by pushing the push button (SW0) during power-on, that is
push and hold the button and hence connect an USB cable to the kit. Programming
can be performed through the DFU programmer FLIP.
How a programmer can be connected to the kit is described in Section 4.1.