Xmega adapter boards for breadboarding2010/04/16
I’ve got a number of projects coming up that would be radically simplified by a) using ATXmega parts, and b) breadboarding a prototype. The problem is that Xmega’s don’t come in anything but surface-mount packages. The obvious solution is to construct an adapter board. A straight pin conversion would be a waste of effort, so adding programming headers, clocks, and decoupling capacitors is a necessity.
I posted to the DorkbotPDX list to see if anybody is interested in ordering some of these alongside my own order in the next group PCB buy (April 26th), and got one response almost immediately. As a result I’m going to tweak the boards up and make sure they’re ready to go, and post them up here for comments.
The first board here is the ATxmega*A4 unit, which is a 40-pin 600-mil DIP. PDI header on the right, crystal on the left, decoupling and AVCC filter caps scattered around. Port pins are labeled as are + and -. PDI pins are accessible on the main header as well as the programming header. Discretes are all 0603 for ease of assembly, though the chip itself is a QFN (unfortunately).
I’ll be tweaking these over the next few days, and hopefully producing a batch of them in the next couple weeks.