These are programming pads for Attiny1616, they use a different programming interface (UDPI) and require a different programmer : Adventures in TinyAVR 1-Series
Adventures in TinyAVR 1-Series - #294 by gchart
These are programming pads for Attiny1616, they use a different programming interface (UDPI) and require a different programmer : Adventures in TinyAVR 1-Series
Adventures in TinyAVR 1-Series - #294 by gchart