Exact Wiring Fault Minimization via Comprehensive Layout Synthesis for CMOS Logic Cells

This paper proposes an exact cell layout synthesis technique to minimize the probability of wiring faults due to spot defects. We modeled the probability of faults on intra-cell routings with considering the spot defects size distribution and the end effect of critical areas. By using the model as a cost function, we comprehensively generate the minimum width layout of CMOS logic cells and select the optimum layouts. Experimental results show that our technique reduces about 15% of the fault probabilities compared with the wire-length-minimum layouts for CMOS logic circuits which have up to 14 transistors.