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Generating At-Speed Array Fail Maps with Low-Speed ATE
Napa Valley, California April 25-April 29
DOI Bookmark: http://doi.ieeecomputersociety.org/10.1109/VTEST.2004.129923022nd IEEE VLSI Test Symposium
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Michael Nelms, IBM Microelectronics Division, Essex Junction, VT
Kevin Gorman, IBM Microelectronics Division, Essex Junction, VT
Darren Anand, IBM Microelectronics Division, Essex Junction, VT
A circuit has been developed to accurately generate embedded memory Fail Maps utilizing At-Speed test clocks generated from low-speed Automated Test Equipment (ATE). The circuit provides a simple interface to communicate between the BIST and ATE for fail data collection. The BIST engine utilizes on-chip clock frequency multiplication to exercise the memory At-Speed. The described implementation reduces test time devoted to creating detailed fail maps in manufacturing by providing the ability to run the part At-Speed, and providing a means to collect fail map data in one test pass on a logic tester.
Index Terms:
BIST, Delay & Performance Test, Design for Testability, Diagnosis & Debug, Memory Test
Citation:
Michael Nelms, Kevin Gorman, Darren Anand, "Generating At-Speed Array Fail Maps with Low-Speed ATE," vts, pp.87, 22nd IEEE VLSI Test Symposium, 2004
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