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Scan chain hold-time violations may occur due to manufacturing defects or to errors in timing closure process during the physical design stage. The latter type of violations prohibits the test of manufactured chips, leading to a zero yield, although these chips with scan hold-time violations may be perfectly functional. In this paper, we propose a suite of techniques which enable the diagnosis and...
Errors in timing closure process during the physical design stage may result in systematic silicon failures, such as scan chain hold time violations, which prohibit the test of manufactured chips. In this paper, we propose a set of techniques that enable the accurate pinpointing of hold time violating scan cells, their modeling and tolerance, paving the way for the generation of valid test data that...
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