Layout_Tips-1 - Layout Tips for IBM 0.13 Technology 1. Some...

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Layout Tips for IBM 0.13 Technology 1. Some useful experiences for the layout drawing 1) For our project design, in the cell library design, the distance between pins should be 0.48×n (n=1, 2, 3…) um. And the distance between the GRLogic and its adjacent pin should be 0.24+0.48*n (n=0, 1, 2, 3…) um. The reason is that when we use encounter to assign the layout automatically, the cells will bond by prbond layer, which here is the same figure as the GRLogic. A distance of 0.24+0.48*n in one cell will make the first adjacent pins between two bonded cells have a distance 0.48*m (m=1, 2, 3…). Fig. 1 and 2 show the example. Figure 1. Distance between pins, here it is 0.48um Figure 2. Distance between the bond and the first pin, here it is 0.24+0.48 um; the blue line on the left is prbound, it overlap exactly the GRLogic, that means in our project design we can draw prbound and GRLogic the same
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2) When drawing the GRLogic (also GRLogic), the upper and lower bond should match the upper and lower M1 bonds. That will void the auto layout misalignment in the encounter process. Figure 3 shows an example. Figure 3. The lower bond of prbound matches the lower bond of M1 exactly
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This note was uploaded on 08/23/2009 for the course EE 6325 taught by Professor Vojin during the Fall '09 term at University of Texas at Dallas, Richardson.

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Layout_Tips-1 - Layout Tips for IBM 0.13 Technology 1. Some...

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