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ℹ️ - Information / ⁉️-questions / Metal- and Module Selection for Run3
Between 2026-07-31 11:59 p.m. and 2026-09-01 12:00 a.m.
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Is the exact metal code and module selection for run 3 documented anywhere? On the Crowd Supply page, I can only find the code 1P5M26ML, so 5 metal layers, but I can't find any reference to 26ML anywhere in the PDK. From my understanding, all of the following modules must be specified for a gf180mcu run to be fully defined: ============================================================================== | Metal Stack | Top Metal | MIM Layer | MIM Cap | PHRES | nVt NMOS | |=============|===========|===========|===========|=============|============| | 1P5M | 6KA | no MIM | no MIM | no PHRES | no nVtNMOS | | | 9KA | Option A | 1.5fF/um2 | 1000 ohm/sq | nVtNMOS | | | 11KA | Option B | 1.0fF/um2 | 2000 ohm/sq | | | | 30KA | | 2fF/um2 | 3000 ohm/sq | | ============================================================================== Has anyone come across this before or has any information about it?
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26ML just mean it has 26 Mask Layers.
7:14 p.m.
  • 11KA
  • MiM Option B
  • 2 fF/um^2
  • 1000 ohm/sq
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Thanks! Did you find that somewhere on the wafer.space site?
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No, just from previous discussions here ...
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Lukas
Is the exact metal code and module selection for run 3 documented anywhere? On the Crowd Supply page, I can only find the code 1P5M26ML, so 5 metal layers, but I can't find any reference to 26ML anywhere in the PDK. From my understanding, all of the following modules must be specified for a gf180mcu run to be fully defined: ============================================================================== | Metal Stack | Top Metal | MIM Layer | MIM Cap | PHRES | nVt NMOS | |=============|===========|===========|===========|=============|============| | 1P5M | 6KA | no MIM | no MIM | no PHRES | no nVtNMOS | | | 9KA | Option A | 1.5fF/um2 | 1000 ohm/sq | nVtNMOS | | | 11KA | Option B | 1.0fF/um2 | 2000 ohm/sq | | | | 30KA | | 2fF/um2 | 3000 ohm/sq | | ============================================================================== Has anyone come across this before or has any information about it?
oh, nvt NMOS is allowed as well. Extraction for thin oxide ones is maybe still not available; but worse, there are no SPICE yet for thin oxide nvt NMOS.
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Tim 'mithro' Ansell 2026-08-08 1:52 a.m.
There is no thin oxide on GF180MCU, only thick oxide and thicker oxide IIRC
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well, yeah, afaik all the gf180 options never offer more than two thicknesses at once, thus if there's even a difference available, there'll be a "thin" and a "thick" with local meaning.
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namibj
well, yeah, afaik all the gf180 options never offer more than two thicknesses at once, thus if there's even a difference available, there'll be a "thin" and a "thick" with local meaning.
Tim 'mithro' Ansell 2026-08-08 1:55 a.m.
I think you might be right there.
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