Designing your own integrated circuits as a one-person operation from your home workshop sounds like science fiction. But 20 years ago, so did rolling your own circuit boards to host a 600 MHz microcontroller with firmware you wrote yourself. Turns out silicon design isn’t nearly as out of reach as it used to be and Matt Venn shows us the ropes in his Zero to ASIC workshop.
Held during the 2020 Hackaday Remoticon, this is a guided tour of the tools used in the Skywater PDK — the Process Design Kit that is an open-source ASIC toolkit produced in a partnership between Google and SkyWater Technology. We covered the news when first announced back in June, but this the most comprehensive look we’ve seen into the actual design process.
Drawing N-channel MOSFET in silicon
Matt builds up the demo starting from the very simple design of an N-channel MOSFET with click-and-drag tools similar to graphics editing software. The good news it that although you can draw your own structures like this, for digital designs you won’t have to. A wide variety of IP has been contributed to the open source project allowing basic building blocks to be pulled in using HDL. However, the power of drawing structures will certainly be the playground for those needing analog design as part of their projects.
As with EDA software used for circuit boards, the PDK includes design rule checks to ensure you aren’t violating the limits of the 130 nm chip fab. There’s some other ..
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