The search functionality is under construction.
The search functionality is under construction.

A Study of Capture-Safe Test Generation Flow for At-Speed Testing

Kohei MIYASE, Xiaoqing WEN, Seiji KAJIHARA, Yuta YAMATO, Atsushi TAKASHIMA, Hiroshi FURUKAWA, Kenji NODA, Hideaki ITO, Kazumi HATAYAMA, Takashi AIKYO, Kewal K. SALUJA

  • Full Text Views

    0

  • Cite this

Summary :

Capture-safety, (defined as the avoidance of timing error due to unduly high launch switching activity in capture mode during at-speed scan testing), is critical in avoiding test induced yield loss. Although several sophisticated techniques are available for reducing capture IR-drop, there are few complete capture-safe test generation flows. This paper addresses the problem by proposing a novel and practical capture-safe test generation flow, featuring (1) a complete capture-safe test generation flow; (2) reliable capture-safety checking; and (3) effective capture-safety improvement by combining X-bit identification & X-filling with low launch-switching-activity test generation. The proposed flow minimizes test data inflation and is compatible with existing automatic test pattern generation (ATPG) flow. The techniques proposed in the flow achieve capture-safety without changing the circuit-under-test or the clocking scheme.

Publication
IEICE TRANSACTIONS on Fundamentals Vol.E93-A No.7 pp.1309-1318
Publication Date
2010/07/01
Publicized
Online ISSN
1745-1337
DOI
10.1587/transfun.E93.A.1309
Type of Manuscript
PAPER
Category
VLSI Design Technology and CAD

Authors

Keyword