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Open source process design kit for usage with SkyWater Technology Foundry's 130nm node.

16 mentions on Hacker News by 16 people: 2 stories, 14 comments · first 2020-06-15 · latest 2025-09-18

Mentions per year 16 mentions · busiest year 2021 (5)
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  1. …to some vendor's PDK. Here's the one Google open sourced for Cypress Semi's SKY130 process node: https://github.com/google/skywater-pdk
    comment by timschmidt · 2025-09-18 · in Orange Pi RV2 $40 RISC-V SBC: Friendly Gateway to IoT and AI Projects
  2. …as part of that initial effort. https://www.skywatertechnology.com/first-google-sponsored-mp... https://github.com/google/skywater-pdk There's a bunch of other PDKs running around now too. But progress does seem to have distinctly tapered…
    comment by jauntywundrkind · 2025-03-01 · in Efabless – Shutdown Notice
  3. Google have a foss prouction flow for 130nm https://github.com/google/skywater-pdk?tab=readme-ov-file You have to know a lot before you can know what you're looking at.
    comment by keikobadthebad · 2024-08-20 · in Ask HN: My son wants to learn how to build ASICs
  4. ▲ 7
    Ask HN: Open-Source Simple CPU?
    story by roschdal · 2024-03-16 · 2 comments
  5. It looks neat, but the process node is 1 um with 3 metal layers. The open Skywater PDK is 130 nm : https://github.com/google/skywater-pdk (though I don't know how reliable the PDK is?)
    comment by kop316 · 2023-10-19 · in Libre Silicon – Free semiconductors for everyone
  6. …a modern node? I'm assuming you've seen the open source skywater pdk, but here it is just in case. https://github.com/google/skywater-pdk
    comment by nm-f · 2023-07-10 · in Ask HN: How to start a fabless chip company targeting a modern process node?
  7. That would be really neat, but I haven't seen anyone even make a CMOS imager on SKY130. https://github.com/google/skywater-pdk One could make an array of thermopiles, like the hacker that made their own imager out of discrete diodes…
    comment by sitkack · 2023-05-07 · in DIY-Thermocam: A low-cost thermal imager based on the FLIR Lepton sensor
  8. …of it won't want to open source it either (though there are exceptions e.g. the Skywater 130nm PDK https://github.com/google/skywater-pdk ). In OpenTitan we've built all the 'logical' IP ourselves from the ground up. This is the Verilog…
    comment by gchadwick · 2022-04-23 · in Making open source hardware design a reality
  9. …[1] https://docs.siliconcompiler.com/en/latest/reference_manual/... [2] https://github.com/google/skywater-pdk [3] https://github.com/siliconcompiler/zerosoc [4] https://github.com/lowrisc/opentitan
    comment by jimmyswimmy · 2021-12-07 · in Compiling code into silicon
  10. …thing that google sponsors using skywater. It's supposedly an open source PDK, I haven't used it. https://github.com/google/skywater-pdk
    comment by gimmeThaBeet · 2021-12-06 · in Open cores, ISAs, etc.: what is open about them?
  11. …OpenPDK by Skywater (sponsored by Google) is proving this article wrong from the beginning. ( https://github.com/google/skywater-pdk ) Yes, thats a rather old technology node, but you can now synthesize your free RISC-V design with a free…
    comment by cleemens · 2021-12-06 · in Open cores, ISAs, etc.: what is open about them?
  12. …a weak point of the RP2040's thus far. Raspberry Pi took advantage of the Google 130nm process: https://github.com/google/skywater-pdk , and came up with a visionary device. Sadly no RISC-V.
    comment by childintime · 2021-05-17 · in Arduino Nano RP2040 with WiFi and Bluetooth
  13. …Google has financed a project where a foundry has made its data files available without any NDAs: https://github.com/google/skywater-pdk The combination has made it possible to have completely open source chip designs.
    comment by jecel · 2021-04-16 · in SiFive Tapes Out First 5nm TSMC 32-bit RISC-V Chip with 7.2 Gbps HBM3
  14. …roups.google.com/d/forum/skywater-pdk-announce [2] https://groups.google.com/g/skywater-pdk-users [3] https://github.com/google/skywater-pdk
    comment by octoberfranklin · 2020-12-02 · in Google partners with SkyWater to enable open source manufacturing of ASICs
  15. …[4] https://www.nand2tetris.org/ [5] https://www.theregister.com/2020/07/03/open_chip_hardware/ https://github.com/google/skywater-pdk
    comment by seg_lol · 2020-10-02 · in Ask HN: How to get into the chip industry?
  16. ▲ 81
    Open source process design kit for usage with SkyWater Foundry's 130nm node
    story by ksec · 2020-06-15 · 28 comments