[report] OpenSUSI Open Source Ecosystem in Japan

Jun Okamura

Open Source Ecosystem in Japan, New OSS Design Activities

IEEE Solid-State Circuits Magazine (Winter 2025)

DOI: 10.1109/MSSC.2025.3634946

The Open Source Utilized Silicon Initiatives (OpenSUSI), established in April 2024 as a nonprofit organization, released an open source 1μm CMOS technology document and the original PDK known as TR-1um [1], on its GitHub repository. The technology was provided by TOKAI RIKA Co., Ltd. [2]. Together with platforms such as SkyWater, GlobalFoundries, and IHP, the availability of such alternative device technologies is vital for the global OSS design community.

On 24–25 September 2025, Kyushu University, TOKAI RIKA, OpenSUSI, and ISHI-Kaian OSS design community in Japan, jointly held a hands-on design seminar using the TR-1-μm open source PDK [read more...]

FIG: (a) and (b) The GDSIIs made by the hands-on design seminar at Kyushu University.

References:

[1] "OpenSUSI/TR-1um" GitHub. [Online]. Available: https://github.com/OpenSUSI/TR-1um

[2] "Tokai Rika" Tokai Rika. [Online]. Available: https://www.tokai-rika.co.jp/en/

[3] "Education Center for Semiconductors and Value Creation" Kyushu University. [Online]. Available: https://ecsvc. ed.kyushu-u.ac.jp/en/index.html

[4] "Security camp 2025 national convention | developing digital talent" IPA (Independent Administrative Agency for Information Processing Promotion). [Online]. Available: https://www.ipa.go.jp/jinzai/security-camp/2025/camp/zenkoku/index.html

[5] R. Brown, "Re: Open letter to the openSUSE Board, project and community (final)," openSUSE Mailing Lists, Jul. 15, 2024. [Online]. Available: https://www. opensusi.org/open-letter