Public

Process and PDK

GF180MCU process and gf180mcu PDK naming, flow role, and version boundary.

Names

  • Confirmed: GF180MCU is the fabrication-process name. gf180mcu is the open PDK name. The two spellings are not interchangeable. (archive message; Discord)
  • Confirmed archive usage: wafer.space design discussions use the gf180mcuD PDK variant. Leo Moser described MIM Option B as the wafer.space stack in one analog discussion. (archive message; Discord)

Flow role

  • Confirmed: The project template is the recommended starting point. The online precheck is the manufacturing gate; local precheck is useful because it gives a better place to debug failures. (archive message; Discord)
  • Confirmed: A GDS may be produced with LibreLane or another design tool, but it must pass the platform precheck. (archive message; Discord)

Controlled-option warning

Open question: The messages disagree or remain uncertain about top-metal thickness, MIM option and density, and high-resistor option. Do not infer these fabrication options from a layout tool default. The evidence and conflict are listed on Process options and open questions. (archive message; Discord) (archive message; Discord)

Version boundary

Confirmed archive fact, not current-version advice: The last explicit paired release in the archive is Project Template 1.5.8 and Precheck 1.7.2 on 2026-07-14. It fixed a critical 3.3 V buffer-cell issue and a text-ID issue. Verify versions before a new submission. (archive message; Discord)

Sources

  • 1413804033298268221 — 2025-09-06T08:32:28.747+00:00 — Leo Moser — archive — Discord — Process and PDK spelling distinction.
  • 1509202657083133983 — 2026-05-27T14:32:33.078+00:00 — Leo Moser — archive — Discord — gf180mcuD and MIM Option B statement.
  • 1428379167623483543 — 2025-10-16T13:48:51.563+00:00 — Leo Moser — archive — Discord — Template and precheck roles.
  • 1523496492365512827 — 2026-07-06T01:11:08.976+00:00 — Tim 'mithro' Ansell — archive — Discord — Tool-neutral GDS generation and required precheck.
  • 1526579676183662662 — 2026-07-14T13:22:37.281+00:00 — Leo Moser — archive — Discord — Last explicit template/precheck pair in the archive.