Total ionizing dose (TID) effects and radiation tests of complex multifunctional Very-large-scale integration (VLSI) integrated circuits (ICs) rise up some particularities as compared to conventional ?simple? ICs. The main difficulty is to organize informative and quick functional tests directly under irradiation. Functional tests approach specified for complex multifunctional VLSI devices is presented and the basic radiation test procedure is discussed in application to some typical examples.

In this paper, we propose a method that combines dedicated test designs, readback and bitstream comparisons to investigate soft errors in a nanoscale SRAM-based FPGA under photoelectric stimulation. Static test is performed to analyze the SEU dependency to voltage supply. Static cross-section and threshold energy are presented. Dynamic test is accomplished by using a set of designs in order to diagnose errors from SET in the logic clock tree, SEU in embedded soft-core processor and in the reconfigurable ICAP interface. A picosecond laser is used in the experiments.Index Terms-Laser testing, soft errors, SRAM-based FPGAs.

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