Presentation 2009-05-20
A scan test generation method to reduce the number of detected untestable faults
Hiroshi OGAWA, Masayoshi YOSHIMURA, Toshinori HOSOKAWA, Koji YAMAZAKI,
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Abstract(in English) There are faults which can be detected by only the invalid test patterns. This is one of the causes for the overtesting. Overtesting occurs that faults on a chip are detected under invalid states using scan chains. However it is difficult to find all invalid states based on circuit structures. On the other hand, untestable faults identification can be used sequential ATPG based on time expansion models. The our proposed method is composed of generating multi cycle capture test patterns, identifying untestable faults and extracting single cycle capture patterns from multi cycle capture sequences to reduce the number of detection for untestable faults.
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Keyword(in English) untestable fault / κ cycle capture test pattern generation / scan design / time expansion model
Paper # VLD2009-3
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Committee VLD
Conference Date 2009/5/13(1days)
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Registration To VLSI Design Technologies (VLD)
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) A scan test generation method to reduce the number of detected untestable faults
Sub Title (in English)
Keyword(1) untestable fault
Keyword(2) κ cycle capture test pattern generation
Keyword(3) scan design
Keyword(4) time expansion model
1st Author's Name Hiroshi OGAWA
1st Author's Affiliation Graduate School of Industrial Technology, Nihon University()
2nd Author's Name Masayoshi YOSHIMURA
2nd Author's Affiliation Graduate School of Infomation Science and Electrical Engineering, Kyushu University
3rd Author's Name Toshinori HOSOKAWA
3rd Author's Affiliation College of Industrial Technology, Nihon University
4th Author's Name Koji YAMAZAKI
4th Author's Affiliation School of Information and Communication, Meiji University
Date 2009-05-20
Paper # VLD2009-3
Volume (vol) vol.109
Number (no) 34
Page pp.pp.-
#Pages 6
Date of Issue