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A fault model for PLAs

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2 Author(s)
Ligthart, M.M. ; Philips Res. Labs., Sunnyvale, CA, USA ; Stans, R.J.

A fault model for programmable logic arrays (PLAs) is discussed. This model maps realistic failures on four classes of faults: multiple stuck-at faults, multiple bridging faults, multiple crosspoint faults, and faults due to breaks in lines. It is shown that multiple stuck-at faults are equivalent to multiple crosspoint faults, multiple bridging faults are sub-equivalent to multiple crosspoint faults, and the set of patterns detecting multiple crosspoint faults is a subset of the set of patterns detecting multiple bridging faults. Hence, the set of patterns detecting multiple crosspoint faults also detects all multiple stuck-at faults and multiple bridging faults. This reduces the fault model for PLAs to two classes: multiple missing/extra crosspoint faults and multiple breaks

Published in:

Computer-Aided Design of Integrated Circuits and Systems, IEEE Transactions on  (Volume:10 ,  Issue: 2 )

Date of Publication:

Feb 1991

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