Novel Bi-partitioned Scan Architecture to Improve Transition Fault Coverage

Abstract

In very deep submicron era, high transition fault coverage is crucial to ensure low levels of Defective Parts Per Million(DPPM). In this paper, the role of bi-partitioning a netlist for transition fault test is analyzed and novel bi-partitioned scan architectures are proposed to improve transition fault coverage with slow speed scan enable. Experiments on 5 industrial ASIC designs show a consistent increase in transition fault coverage.