Analysis and Minimization of Test Time in a Combined BIST and External Test Approach

In this paper, an analysis of test time by CBET (which is an acronym for Combination of BIST and External Test) test approach is presented. The analysis validates that CBET test approach can achieve shorter testing time than both external test and BIST in many situations. An efficient test time minimization algorithm for CBET-based LSIs is also proposed. It uses several characteristics of CBET test approach derived by the analysis to reduce computation time to find the optimum test sets. The algorithm helps designers to save their precious design time.

• Type: Conference
• Year: 2000
• Where: DATE
• Authors: Makoto Sugihara, Hiroto Yasuura, Hiroshi Date
• Keywords: CBET Test Approach, DATE 2000, Hardware, Test Approach, Test Time