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Scan-based manufacturing test of low power designs often exceeds the very tight functional constraints on average and instantaneous logic switching. The logic activity during the shift and launch-capture of test pattern data may lead to excessive power consumption and voltage droop. This paper focuses on the management of instantaneous power during the capture phase. By taking advantage of the existing...
We propose a built-in scheme for generating all patterns of a given deterministic test set T. The scheme is based on grouping the columns of T, so that in each group of columns the number ri of unique representatives (row subvectors) as well as their product R over all such groups is kept at a minimum. The representatives of each group (segment) are then generated by a small finite state machine (FSM)...
Soft errors caused by ionizing radiation have emerged as a major concern for current generation of CMOS technologies and the trend is expected to get worse. Soft error rate (SER) measurement, expressed as number of failures encountered per billion hours of device operation, is time consuming and involves significant test cost. The cost stems from having to connect a device-under-test to a tester for...
Software-based self-test (SBST) has emerged as an effective strategy for non-concurrent on-line testing of processors integrated in embedded system applications. It offers the potential for on-line testing without any hardware overhead. However, test generation is usually based in a semi-automated approach and gate-level information is required for effective test program generation.In this paper we...
IC testing based on a full-scan design methodology and ATPG is the most widely used test strategy today. However, rapidly growing test costs are severely challenging the applicability of scan-based testing. Both test data size and number of test cycles increase drastically as circuit size grows and feature size shrinks. For a full-scan circuit, test data volume and test cycle count are both proportional...
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