If you want to supply Vcc yourself, the onboard VReg should be isolated by cutting SJ2 and SJ5 (back-powering the board could make the VReg hot and grumpy otherwise). This board is designed to be powered via the Micro-USB header. SJ5 (default: connected) connects VReg output to Vcc (board v1c onwards) SJ4 (default: connected) connects USB D+/D- to the XMega. SJ3 (default: not connected) connects header pins D6/D7 to the XMega. SJ2 (default: connected) connects USB 5v to the voltage regulator. SJ1 (default: connected) connects Vcc to AVcc. Pads for a standard crystal (HC49/US) and load caps (0805) are onboard. We've got a page with some XMega examples, which might be useful.
#USB FORMAT TOOL VER1.0.2011 SOFTWARE#
The multi-platform dfu-programmer software also supports the XMega DFU bootloader. The bootloader is run if pin C3 is grounded when the board is powered up (we still recommend that you've got a PDI programmer around though!).Ītmel's FLIP utility can then be used to program the board via USB. Note: We're now supplying these boards with Atmel's DFU bootloader pre-programmed. The board has been designed to keep port pins together and all the I/O pins have been brought out to clearly labelled headers. This simple open-source board brings all the I/O pins of the XMegaA4 out to your breadboard.Īn onboard Micro-USB socket provides power (via an onboard 3.3v LDO voltage regulator).Īll parts except the header pins are pre-soldered, fully tested, and ready to go!