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In this paper, we propose a layout-based scan chain ordering method to improve fault coverage for skewedload delay test with minimum routing overhead. This approach provides many advantages over previous methods. (1) The proposed method can provide 100% test pair coverage for all detectable transition faults. (2) With layout information taken into account, the routing penalty is small, and thus the impact on circuit performance will not be significant. 15th Asian Test Symposium (ATS'06)doi:10.1109/ats.2006.261016 fatcat:pjwidysry5cz3d2vjouxkvfi54