TTSky25a submitted — most packed ASIC to date

237 projects submitted to ChipFoundry, including Asteroid RISC-V SoC at 60k cells

Tiny Tapeout Team

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1 October 2025

We just packed 237 of your projects into our most exciting ASIC to date! Let’s take a look inside…

Asteroid RISC-V Takes Flight

This was the first time we enabled 4-tile high designs, and it opened the door to something special: Asteroid, a monster crowdsourced RISC-V microcontroller. At 60,000 standard cells, it’s the biggest design we’ve ever seen on Tiny Tapeout. We’ll be announcing the RISC-V competition results in the next few days!

Analog Innovation

Inspired by Peter Kinget, we commissioned Andrew Kang to create a Mini MOSBius circuit especially for us. The idea is brilliant! An analog FPGA that lets analog designers get faster feedback on their circuit designs, right on real silicon.

Tributes and Community

Mitch Altman has long inspired us, so as a tribute we included an ASIC version of his classic TV-B-Gone — the universal off button for TVs. This also provided a good opportunity to test Sylvain Munaut’s ROM.

We have our first commissioned art piece from Sabine Wieluch: “Cross Stitch Creatures” — the first of a 4-part series exploring what silicon art looks like.

Mixed-Signal Maturity

It’s fantastic to see people using our service to test bigger, more ambitious mixed-signal designs. Jesse put a tiny 16×32 OpenRAM memory block inside a 4-tile digital design.

Another designer created a PLL that takes full advantage of our smallest and cheapest tile — with excellent documentation too! And Anton Maurovic designed a beautiful current steering DAC optimized to drive VGA monitors. Great to see your mixed-signal skills evolving, Anton!

What’s Next

Thanks to ChipFoundry for sponsoring us and keeping ASIC design and manufacturing affordable! Our next shuttle is already open, and thanks to ChipFoundry you can tape out a single-tile digital design and receive your own ASIC for just €185 including shipping.

For all the details, check out the interactive viewer and the full datasheet here.

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