TTSKY25b sent to foundry — 98% Utilization
TTSKY25b heads to ChipFoundry with 316 designs.
20 November 2025
Full GDS
Our latest chip is on the way to the foundry!
TTSKY25b is packed to the gills. At 98% utilization, nearly every scrap of silicon is being used. This shuttle closed on November 10th with 316 designs, a staggering amount of community creativity crammed into one tapeout.
Among the designs is a WSPR radio transmitter for long-distance amateur radio communications. A tiny GPU — actual graphics acceleration on an open source ASIC. And most impressively, a uLinux-capable RISC-V SoC: a complete processor capable of running actual Linux.
Big thanks to ChipFoundry for sponsoring this shuttle. Their support keeps the momentum going and makes these ambitious projects possible.
For all the details on TTSKY25b, check out the datasheet and interactive chip map here.
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Last modified by Matt Venn on 24 July 2026. Commit 69cd11e. Suggestions?