Xpress board PIC18F46K42: can it be used "Target powered"?
So I'm looking at the board and currently it is "blobbed" to 3.3V operation, but it looks like there's another spot for 5V operation. As far as I'm aware it is the 5V compatible version of the PIC not the low voltage one so presumably I could change it to 5V?
Can I use it in a circuit that provides its own 5V supply, by opening the connection between the target PIC and voltage regulator. The only problem I can see is that without the USB lead connected MCLR would probably get dragged down meaning the PIC could only run with USB connected.