Does anyone work with CIF (Caltech Intermediate Format) files? These are files that are generated by IC layout programs, such as TannerEDA L-Edit, which define the layers and layout of masks used in VLSI semiconductor device processing (photolithography).
I would like to parse these CIF files to generate a wafer map of the devices for use in on-wafer testing. Currently, a shot map is made and then I manually go through and define row and column coordinates for the edge of a wafer and various drop-in locations. I would like to automate this process, and I know if can be done by reading these CIF files. However, I don't really know how to read them, and I can only get so much information from the Wikipedia page and from the original paper.
So I ask: does anyone have a set of VIs that make reading CIF files easier? Or, can anyone who works with them help me with my problem? I can describe it in much better detail once someone comes along...
Solved! Go to Solution.
Oh excellent! Aside from LabVIEW, the other language that I know well is Mathematica, so that works out perfectly. If you can't find the LV stuff, the Mathematica stuff would be helpful.
Here is one of my CIF notebooks from Mathematica (remove the .txt extension obviously). I used this one to create a new CIF file with four instances of the object contained in a file.
You can load a file by the following:
symName = loadCIF;
You can see the layers:
You can view the layers:
(add multiple layers to the list if desired)
If you have a typical CIF file I can also test to see that it recognizes the objects you use, I typically stick to polygons and boxes.
I'll use this code to try and make something useful in LV.