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Thread: `ANTENNAGATEPLUSDIFF` missing from Metal1

8 Discord messages from 📐 - Designing/📝-project-template/threads/antennagateplusdiff-missing-from-metal1.md.

Category: 📐 - Designing Parent channel: #📝-project-template Thread ID: 1516040175241789481

Messages: 8

message-1516088059425198284

2026-06-15T14:32:40.921+00:00 — Leo Moser (mole99) (@mole99)

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message-1516088063883739336

2026-06-15T14:32:41.984+00:00 — Leo Moser (mole99) (@mole99)

Content

It seems that `ANTENNAGATEPLUSDIFF` is missing from Metal1 in all of the techlefs: https://github.com/fossi-foundation/globalfoundries-pdk-libs-gf180mcu_fd_sc_mcu9t5v0/blob/e0e80f5a6522f10b82165d3aeab9b8ee28e89849/tech/gf180mcu_4LM_1TM_11K_9t_tech.lef#L71
That seems to be wrong, do you agree?

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message-1516089403041386548

2026-06-15T14:38:01.264+00:00 — tnt (@246tnt)

Content

I think so.
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message-1516089530946555925

2026-06-15T14:38:31.759+00:00 — tnt (@246tnt)

Content

I guess it won't really have any impact since nothing is routed on met1, it's the standard cell themselves.
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message-1516089615373697108

2026-06-15T14:38:51.888+00:00 — Leo Moser (mole99) (@mole99)

Content

Right, That's probably the reason!
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message-1516089705630797935

2026-06-15T14:39:13.407+00:00 — Leo Moser (mole99) (@mole99)

Content

Then I'll leave it as is and only adjust the other layers.
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message-1516091913130868913

2026-06-15T14:47:59.716+00:00 — Leo Moser (mole99) (@mole99)

Content

Done:

- https://github.com/fossi-foundation/globalfoundries-pdk-libs-gf180mcu_fd_sc_mcu9t5v0/pull/2
- https://github.com/fossi-foundation/globalfoundries-pdk-libs-gf180mcu_fd_sc_mcu7t5v0/pull/2

I'll ask Tim to merge and update the open_pdks hashes.

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message-1516093206607958048

2026-06-15T14:53:08.105+00:00 — tnt (@246tnt)

Content

Thanks !

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