Abstract

VLSI internal testing through silicon substrate has been widely studied and techniques like Time Resolved Emission has given impressive results. Nevertheless, Integrated Circuits (IC) are still evolving with more and more complex functions and various kinds of signals that could be split into two main categories: data and control. Controls activate specific block and according to the wide range of different blocks and device complexity, the first analysis task is to check block activity related to control line status. In this paper, we show how Time Resolved Imaging can precisely answer this challenge even in up-to-date technologies at low power supply.

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