Configuring multiple scan chains for minimum test time
ICCAD '92 Proceedings of the 1992 IEEE/ACM international conference on Computer-aided design
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This paper presents a design-for-testability technique, called partially parallel scan chain ( PPSC ), which aims at reduction of test length for sequential circuits. Since the partially parallel scan chain allows to control and observe subset of flip-flops (FFs) concurrently during scan shift operations, the number of scan shift clocks is reduced.