[synack]

TI's PRU is a similar concept, but the PIO here is simpler. Parallax Propeller also has a similar flavor with lots of small cores doing different things. It's not a new idea, but the PIO looks like a nice balance between capability and complexity.

I'm in love with this documentation. It's not just prettier than other vendors' datasheets, it's also got lots of examples, links, tips, and explanations about the "why" in addition to the "how"