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Impact of NDA-Free&Open Source on LSI Design & Fabrication

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Open Hardware Summit (OHS) 2020

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Impact of NDA-Free&Open Source on LSI Design & Fabrication

  1. 1. Interface Device Laboratory, Kanazawa University http://ifdl.jp/ Impact of NDA-Free&Open Source on LSI Design & Fabrication Junichi Akita Kanazawa University
  2. 2. 2020/3/13 Interface Device Laboratory, Kanazawa University http://ifdl.jp/ Contents Introduction & Background LSI as Tools Moore’s Law: its two faces NDA-free & Open Source LSI Design & Fabrication Project Design rule Libraries & Design Flow Examples
  3. 3. 2020/3/13 Interface Device Laboratory, Kanazawa University http://ifdl.jp/ What is “Moore’s Law” More transistors on Single Chip Continuous Size Reduction ref: http://www.intel.com/jp/intel/museum/processor/index.htm
  4. 4. 2020/3/13 Interface Device Laboratory, Kanazawa University http://ifdl.jp/ What Did Moore’s Law Achieved? DEC VAX(1976) 1MIPS Cray-1 (1978) 100MIPS MIPS:Million Instruction Per Second (World’s 1st Super Computer) “Faster Super Computer” & “So-fast Computer Everywhere” 20000MIPS 10MIPS 100MIPS 20MIPS 20000MIPS 109MFLOPS
  5. 5. 2020/3/13 Interface Device Laboratory, Kanazawa University http://ifdl.jp/ Paradigm Shift in “LED Blinking” No reason to employ MCU for “LED Blinking” Low Cost, High Functionality Extended practical application area of computer “Feature Size Reduction” is NOT the only way MCU #Component=1 $1 Oscillator(555) #Component=4 $1.5 while(1){ a = 1; sleep(1); a = 0; sleep(1); } Possible, but non-realistic by PC
  6. 6. 2020/3/13 Interface Device Laboratory, Kanazawa University http://ifdl.jp/ What Did Moore’s Law Caused? Drastic Increase in LSI Design & Fabrication Cost Shuttle Fabrication Service 〜$1k Initial Fabrication Cost (Masks) 〜$1M Design Tools 〜$1M NDA (Non Disclosure Agreement) : Priceless Fabrication Facilities 〜$1G
  7. 7. 2020/3/13 Interface Device Laboratory, Kanazawa University http://ifdl.jp/ What NDA affects? We can’t share the designed circuits on GitHub…! We can’t fork the designed circuits by others…!
  8. 8. 2020/3/13 Interface Device Laboratory, Kanazawa University http://ifdl.jp/ Is “LSI” a Tool for Everyone?: Survey CMOS 0.18um 5Al 2.5mm x 2.5mm RingOSC x 1001 T-FF (Div) (※LSI=集積回路のこと) https://www.youtube.com/watch?v=Pt9i2ABe_mE Comments: Stupid, Waste of tech, Mottainai, … = “LSI is NOT a “true” tool for realizing something
  9. 9. 2020/3/13 Interface Device Laboratory, Kanazawa University http://ifdl.jp/ Is “LSI” a Tool for Everyone? Most people CAN’T imagine to “design original LSIs” Too expensive, Too complicated, No Experiences Most people simply consider to buy LSI MCU, Sensors, … Lots Realized Restrictions in Thinking: Using Exsisting LSI Everyone use Kinect, few can invent Kinect Losing Chance of Innovation
  10. 10. 2020/3/13 Interface Device Laboratory, Kanazawa University http://ifdl.jp/ What Required for “LSI as Tool”? CAD Tool Too Expensive Commercial Tools Too Complicated CAD System Fabrication Service Too Expensive, Too Long TAT (several months) Strict NDA s User Community Specialists who know not only “How to design”, but also “What to use” LSIs.
  11. 11. 2020/3/13 Interface Device Laboratory, Kanazawa University http://ifdl.jp/ MakeLSI: - Outline Know-how Sharing Freeware CAD Basic Knowledges Community 100+ in ML LSI Specialists & Non-specialists NDA-Free Design & Fabrication http://ifdl.jp/make_lsi
  12. 12. 2020/3/13 Interface Device Laboratory, Kanazawa University http://ifdl.jp/ MakeLSI: - Design Rule 1um-grid rule Can “satisfy” some fab’s design rules PTS 0.6um (JP) HHGrace0.35um (CN) … Independent on fab’s “limit” of design rule = NDA-free https://github.com/makelsi/OpenRule1um
  13. 13. 2020/3/13 Interface Device Laboratory, Kanazawa University http://ifdl.jp/ MakeLSI: - Libraries Standard Logic Cells Analog Components (under development) Distributed development by contributors
  14. 14. 2020/3/13 Interface Device Laboratory, Kanazawa University http://ifdl.jp/ MakeLSI: - Tools Layout Tool: Glade, K-Layout Circuit Simulator: LTspice / Spice3 Logic Synthesize & P&R: Alliance, Qflow *Open Source Softwares RISC-V processor (subset)
  15. 15. 2020/3/13 Interface Device Laboratory, Kanazawa University http://ifdl.jp/ MakeLSI: - Fabrication Commercial Fab’s shuttle Phenitec Semiconductors (JP) HH Grace (CN) : (will try soon) (Future) minimalfab by AIST, Japan 0.5in wafer, Mask-less exposure, 1week TAT Order custom LSI like PCB…!
  16. 16. 2020/3/13 Interface Device Laboratory, Kanazawa University http://ifdl.jp/ MakeLSI: - 1st Trial in 2015 8 Contributors Free fee, Open & Share Contents 11 Circuits Kilburn Adder Guitar Effector 1bit CPU 4-16 Decoder Ring VCO, LC-VCO, BGR Wide Variety, Passionate Activity Saw Oscillator OPA MOSFET TEGs Timer“555”
  17. 17. 2020/3/13 Interface Device Laboratory, Kanazawa University http://ifdl.jp/ MakeLSI: - 2nd Trial in 2016 11 Contributors Free fee, Open & Share Contents 12 Circuits ALU Guitar Effector RingOSC PSG Delta-sigma ADC Wide Variety, Passionate Activity R-2R DAC NRZI Codec GoldCoder Inverter, FA Timer“555”
  18. 18. 2020/3/13 Interface Device Laboratory, Kanazawa University http://ifdl.jp/ Summary Effect of Moore’s Law High Performance & Wide Spread of Applications Drastic Increase of Cost and Requirement of NDA Technology MUST become a Tool for Everyone Wide application, Seed of innovation NDA-free & Open Source LSI Development Open framework, NDA-Free Rapid development & improvement in IP

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