Open Source Utilized Silicon Initiatives
Tokyo, Japan.
Joined January 2024
- Tweets153
- Following2
- Followers110
- Likes6
OpenSUSI retweeted
I wrote a brief note about ICTA 2026 and the Special Session for Open Source PDK.
note.com/jun1okamura/n/n0420…
OpenSUSI retweeted
We've officially closed applications for OpenSUSI-MPW, and the shuttle is now in the wafer-in process.
prtimes.jp/main/html/rd/p/00…
OpenSUSI retweeted
素晴らしい！！！
今日は @Open_SUSI 主催、@Ishi_Kai_ASIC 指導のもと、半導体Bootcampなるものに参加してきました！
人生で初めて、回路図を半導体のチップレイアウトに落とした🪄
オープンソースのツールでここまでできるのすごい。
設計したチップは実際に製造されて、2月に届くみたい。楽しみ〜！
OpenSUSI retweeted
I have completed the synthesis and automatic P&R of TD4, an educational 4-bit CPU, with Claude and TR-1um. I also designed a custom 8×16 register file, reduced the stdcell height, and created a simplified .lib file to enable STA.
github.com/jun1okamura/TR-1u…
OpenSUSI retweeted
I shared my Open-Source Silicon activity in Japan with the San Diego delegation team at the RISE GATE conference hall. It was a great opportunity to share an update on the last three years.
See PR: aist-solutions.co.jp/news/re…
OpenSUSI retweeted
I have uploaded a new Qiita article, “Implementing an Asynchronous I2C Circuit with Claude (SPICE Version).” This time, as a follow-up to the previous design work, I ran final timing and chip-level verification in SPICE (ngspice) .
qiita.com/jun1okamura/items/…
OpenSUSI retweeted
OpenSUSI-MPW now has 22 outstanding orders, and chip designs keep coming in. The first shuttle is taking shape!
OpenSUSI retweeted
I have just uploaded my first TR-1um chip design to the OpenSUSI-MPW aggregation repository and updated the README in my source repository. This is my first actual chip design for the TR-1um Open-Source PDK!
github.com/jun1okamura/TR-1u…
OpenSUSI retweeted
I posted an article about a chip-level timing verification process with Claude. Since TR-1um STDCELL has no timing information, I used IRSIM to verify timing. Claude found two serious bugs, fixed them with NET, and then re-ran AP&R.
qiita.com/jun1okamura/items/…
OpenSUSI retweeted
I posted an article about completing a new chip design with Claude. The goal was to perform AP&R using only Klayout and Xschem, and I did. The key is that the open-source Klayout API and text-based Xschem sch/sym files both work well in Claude's sandbox.
qiita.com/jun1okamura/items/…
OpenSUSI retweeted
I gave a talk about the Open-Source Ecosystem in Japan at COSCUP 2026 in Taiwan. (coscup.org/2026/)
Finally, we have reached a collaboration agreement with Google.
prtimes.jp/main/html/rd/p/00…
OpenSUSI retweeted
The event recording is now live on YouTube. I had the honor of giving both the opening and closing talks. It was a great event with many inspiring discussions and participants.
youtube.com/watch?v=9k9PUTSj…
We are kicking off the “First Tapeout” event in Tenjin, Fukuoka, Today!
youtube.com/@Open_SUSI
既報の First Tapeout 募集６枠に対して最終倍率は３.５倍となました。１２日にＰＭによるブラインド審査の結果６枠（九州４、その他２）の採択者を決定いたしました。２０日にキックオフ・イベントを天神・福岡にて開催いたします。
opensusi.org/first-tapeout
First Tapeout の申し込みを締め切りました。 opensusi.org/first-tapeout最終倍率は＞3倍になりました。オープンソースシリコンでの半導体設計というプラットフォームへの存在的な期待が国内に残っていることが証明できて大変嬉しいです。