wafer.space Community

Deleted User 06/01/2025 18:56

2

@Deleted User - What is the state of GF180MCU support in OpenLane 2?

algofoogle (Anton Maurovic)

Very cool

thanks for following up

If you have any more comments / thoughts / resources on eFuse releated stuff, please put it into the document @ https://bit.ly/ws-gf180mcu-efuses (edited)

wafer.space - GF180MCU eFuse Information - bit.ly/ws-gf180mcu-efuses

wafer.space - GF180MCU eFuse Information https://bit.ly/ws-gf180mcu-efuses Current Status Egorxe has created an efure compiler @ https://github.com/egorxe/gf180_efuse_compiler These efuses were taped out on the Google GFMPW-0 free shuttle. An issue with missing via's meant the design didn't wor...

Tim 'mithro' Ansell

@Deleted User - What is the state of GF180MCU support in OpenLane 2?

Right behind sky130, it's been in the CI forever

20:32

The key is OL2/LibreLane weren't really used for any GFMPW designs so that practical part is missing

Deleted User

Right behind sky130, it's been in the CI forever

Do you know if people have used it to tape out? I don't recall how the timeline of Openlane 2 and the MPW programs ended going

I don't believe so, no.

Okay

20:34

@Deleted User - BTW volare has been moved / renamed too?

Yes - https://github.com/fossi-foundation/ciel

GitHub - fossi-foundation/ciel: Open-source PDK version manager

Open-source PDK version manager. Contribute to fossi-foundation/ciel development by creating an account on GitHub.

@Deleted User - Thanks! Also thanks for all your work on these things.

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Tim 'mithro' Ansell

If you have any more comments / thoughts / resources on eFuse releated stuff, please put it into the document @ https://bit.ly/ws-gf180mcu-efuses (edited)

Cheers Tim. There’s a typo in that URL BTW: “wf” should be “ws”

algofoogle (Anton Maurovic)

Cheers Tim. There’s a typo in that URL BTW: “wf” should be “ws”

Fixed I think...

I have wafer.space business cards! The ones on the right have silver foil look on the logo, while the ones on the right are slightly embossed / raised.

Anyone know much about https://ishi-kai.org/openmpw/shuttle/ptc06/2025/05/24/shuttle_ISHI-Kai_OpenMPW-PTC06-2_start.html ?

ISHI会版OpenMPW PTC06-2開始！！！～2025年PTC06（フェニ...

ISHI会版OpenMPW PTC06-2開始！！！～2025年PTC06（フェニテックシャトル）の相乗り募集～去年のISHI会版OpenMPW PTC06-1に続いて、今年はサンケン電気株式会社様がスポンサーとして付く形でフェニテックシャトルの相乗り募集をすることになりました！すなわち、小...

This is super cool -> https://www.youtube.com/watch?v=RFPe4FT126M

Zero To ASIC Course

180 GHz chip design with open source tools - an interview with Shaf...

Hi! I joined recently and I just realized I should maybe introduce myself for those that don’t know me yet. I’m here because I have a lot of experience with GF180MCU from my three submissions to GFMPW shuttles (one of which was a multi-project die), and a lot of tapeout experience overall. I want to help however I can, considering how much time I’ve spent working with gf180. And am also just excited to get to make chips again using this PDK.

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I may actually be interested in making a custom standard cell library for gf180, just as I have for sky130. I took a look at the 7 track cells in magic, and I see room for improvement, I think.

After a little bit of fighting with gf180mcu’s oddities, I was able to extract, simulate and characterize one of the 7-track standard cells with magic, SPICE and lctime. So it looks like my usual workflow can work here. Well, ignoring the fact that the output values of my characterization are up to 50% off from whats in the PDK’s liberty files. Still investigating this.

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