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Ninth Asian Test Symposium (ATS'00)
Design for sequential testability: an internal state reseeding approach for 100 % fault coverage
Taipei, Taiwan
December 04-December 06
ISBN: 0-7695-0887-1
M.L. Flottes, Lab. d'Inf. de Robotique et de Microelectron., Montpellier, France
C. Landrault, Lab. d'Inf. de Robotique et de Microelectron., Montpellier, France
A. Petitqueux, Lab. d'Inf. de Robotique et de Microelectron., Montpellier, France
This paper proposes a method to select observation points and flip-flops for partial reset. The method does not target minimum DFT insertion but a maximum improvement on testability. The proposed non-scan approach allows a at-speed testing. Experimental results show that the method achieves 100% fault coverage and 100% fault efficiency for benchmark circuits while requiring less ATPG effort (CPU time) with no scan necessity.
Index Terms:
sequential circuits; logic design; logic testing; design for testability; fault diagnosis; controllability; automatic test pattern generation; observability; sequential testability; internal state reseeding; fault coverage; observation points; flip-flops; partial reset; minimum DFT insertion; non-scan approach; at-speed testing; controllability; benchmark circuits; fault efficiency; ATPG; CPU time; 100 percent
Citation:
M.L. Flottes, C. Landrault, A. Petitqueux, "Design for sequential testability: an internal state reseeding approach for 100 % fault coverage," ats, pp.404, Ninth Asian Test Symposium (ATS'00), 2000
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