The ATmega324PB
Xplained Pro can be powered from an external
battery connected directly to the target. To do this the on-board programmer/debugger
has to be disconnected.
The following procedure should be followed:
- Remove all resistors connecting the EDBG to the target. They can be found on the
backside nicely aligned and ready to be removed.
- Remove R105 to disconnect the target from the on board power supply.
- Attach an external battery to the
Power header (J101). GND to J101.2 and VCC to J101.4 (usually the RED
wire).
Tip: An external
debugger/programmer can be connected to the ATmega324PB JTAG header.
Tip: To save
battery power during debugging it is possible to connect a wire from the
3.3V test point (J100) to the power header J101.4, using the USB power
to supply the target.
Figure 1.
ATmega324PB
Xplained Pro Connector Overview