We present an automated procedure for improving the testability of a product by improving the testability of cells in the cell library. This method was applied to a scan flip-flop from Cyrix's standard cell library. Based on this analysis, some design and layout changes were suggested, which brought down the probability of difficult-to-detect faults by 70%, without compromising the performance or increasing the area of the circuit.
Citation:
Jingjing Xu, Rahul Kundu, F. Joel Ferguson, "A Systematic DFT Procedure for Library Cells," vts, pp.460, 1999 17TH IEEE VLSI Test Symposium, 1999