Revision as of 14:23, 1 June 2017

Semiconductor lithography processes technology

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The 7 nanometer (7 nm) lithography process is a technology node semiconductor manufacturing process following the 10 nm process node. The term "7 nm" is simply a commercial name for a generation of a certain size and its technology and does not represent any geometry of a transistor. Commercial mass production of integrated circuit using 7 nm process is set to begin sometimes in 2019 or 2020. This technology will be replaced by 5 nm process around 2022.

Industry

Only four semiconductor foundries are able to develop the advanced 7nm: Intel, Samsung, TSMC, and GlobalFoundries.

Preliminary Data! Information presented in this article deal with future products, data, features, and specifications that have yet to be finalized, announced, or released. Information may be incomplete and can change by final release.

Intel

In May of 2017, Intel's Technology and Manufacturing Group Director, Mark Bohr, confirmed that Intel's 7 nm node has entered development phase and that the company's research focuses on the 5 nm and 3 nm nodes. Intel has been maintaining the details of their 7 nm node secrete for now.

GlobalFoundries

On May 30 2017, GlobalFoundries Senior Vice President and head of CMOS Business Unit, Gregg Bartlett, announced their updated roadmap. Instead of EUV, the company will use multiple patterning 193i for their 7 nm node. The company is planning on first tape-out in the 2nd half of 2018 with mass production to begin in 2019. Bartlett noted that GF will switch to EUVL when it's ready.

TSMC

In ISSCC 2017, the memory group at TSMC detailed their test 256 MiB SRAM chip which featured a 42.64 mm² die. The chip is manufactured on TSMC's 7nm HK-MG FinFET process using 4P4E LELELELE patterning technique. The over die is 0.34x smaller than their 16 nm process version. At the same conference, Samsung detailed limited use for EUV in their 7nm node, though not much more is known. On February 8 2017 Intel announced a $7B investment in Arizona's Fab 42 which will eventually produce chips on a 7 nm process.

TSMC 256 Mib SRAM demo 7 nm wafer
Technology 7 nm HK-MG FinFET Metal scheme 1 Poly / 7 Metal Supply voltage 0.75 V (core) 1.8 V (i/o) Bit cell size 0.027 µm² macro configs 4096x32 MUX16 258 bits/BL 272 bits/WL Capacity 256 Mib Test Features Row/Column Redundancy Programmable E-fuse Die Size 5903 µm x 7223 µm = 42.64 mm²

7 nm Microprocessors

• MediaTek
  • Helio

This list is incomplete; you can help by expanding it.

7 nm Microarchitectures

• AMD
  • Zen 2
  • Zen 3

References

• Chang, Jonathan, et al. "12.1 A 7nm 256Mb SRAM in high-k metal-gate FinFET technology with write-assist circuitry for low-V MIN applications." Solid-State Circuits Conference (ISSCC), 2017 IEEE International. IEEE, 2017.
• Standaert, T., et al. "BEOL process integration for the 7 nm technology node." Interconnect Technology Conference/Advanced Metallization Conference (IITC/AMC), 2016 IEEE International. IEEE, 2016.
• Samsung/GlobalFoundries, IEEE International Electron Devices Meeting (IEDM) 2016