qprox qt60161b

hello all,

Two of these small wonders are lying in front of me and i wonder if someone has experience with them.

for the less informed, this is a 16 key touch sensor in matrix setup. Actually it is a whole microcomputer with a spi, uart and parallel output.
The parallel output emulates a regular keypad, but i'm more interested in the uart way, as it saves precious inputs on our arduino's.

I want to use a Vmusic2 as well, so maybe using SPI is a better option, but i have no expierence with that protocol.