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Guild: wafer.space Community
Channel: ℹ️ - Information / ⁉️-questions / Metal- and Module Selection for Run3
After: 2026-07-31 11:59 p.m.
Before: 2026-09-01 12:00 a.m.
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[2026-08-06 7:01 p.m.] lukas_88179
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?


[2026-08-06 7:13 p.m.] 246tnt
26ML just mean it has 26 Mask Layers.


[2026-08-06 7:14 p.m.] 246tnt
* 11KA
* MiM Option B
* 2 fF/um^2
* 1000 ohm/sq


[2026-08-06 7:18 p.m.] lukas_88179
Thanks! Did you find that somewhere on the wafer.space site?


[2026-08-06 7:30 p.m.] 246tnt
No, just from previous discussions here ...

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[2026-08-07 6:20 p.m.] namibj
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.


[2026-08-08 1:52 a.m.] mithro_
There is no thin oxide on GF180MCU, only thick oxide and thicker oxide IIRC


[2026-08-08 1:53 a.m.] 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.


[2026-08-08 1:55 a.m.] mithro_
I think you might be right there.


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