3.3.2 External Supply

PIC18F47K42 Curiosity Nano can be powered by an external voltage instead of the on-board target regulator. When the Voltage Off (VOFF) pin is shorted to ground (GND) the on-board debugger firmware disables the target regulator, and it is safe to apply an external voltage to the VTG pin.

Warning: Applying an external voltage to the VTG pin without shorting VOFF to GND may cause permanent damage to the kit.

Warning: Absolute maximum external voltage is 5.5V for the on-board level shifters, and the standard operating condition of the PIC18F47K42 is 2.3-5.5V. Applying a higher voltage may cause permanent damage to the kit.

Programming, debugging, and data streaming are still possible with an external power supply: The debugger and signal level shifters will be powered from the USB cable. Both regulators, the debugger, and the level shifters are powered down when the USB cable is removed.