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Scan-architecture-based evaluation technique of SET and SEU soft-error rates at each flip-flop in logic VLSI systems

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5 Author(s)
Y. Yanagawa ; Department of Electronic Engineering, School of Engineering, The University of Tokyo, 113-8656 Japan ; D. Kobayashi ; H. Ikeda ; H. Saito
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A scan flip-flop (FF) is designed to observe both single event transient (SET) and single event upset (SEU) soft errors in logic VLSI systems. The SET and SEL' soft errors mean the upset caused by latching an SET pulse that originates in combinational logic blocks and the upset caused by a direct ion hit to the FF, respectively. An irradiation test method using the scan FF is proposed to obtain SET and SEL soft-error rates at each FF distributed in logic VLSI systems. A test chip is designed using a 0.2-mum fully-depleted silicon-on-insnlator standard cell library. The basic concepts have been validated with Verilog timing simulations. The cell-level implementation costs of the proposed scan FF are estimated to be reasonable.

Published in:

Radiation and Its Effects on Components and Systems, 2007. RADECS 2007. 9th European Conference on

Date of Conference:

10-14 Sept. 2007