[zopf]

After some investigation, you are correct! Knowing that some of TrueNorth's creators previously worked on mixed-mode systems, I made the assumption that this one was too.

It seems the TrueNorth is indeed fully digital, but takes advantage of the event-driven architecture and peer-to-peer communication between many tiny cores to keep things low-power.

( http://paulmerolla.com/merolla_main_som.pdf for some details )

Thank you for the correction!