Low-Power Programmable PRPG With Test Compression Capabilities - 2015
This project describes an occasional-power (LP) programmable generator capable of manufacturing pseudorandom take a look at patterns with desired toggling levels and enhanced fault coverage gradient compared with the most effective-to-date engineered-in self-test (BIST)-based mostly pseudorandom test pattern generators. It is comprised of a linear finite state machine (a linear feedback shift register or a hoop generator) driving an applicable phase shifter, and it comes with a variety of options permitting this device to provide binary sequences with preselected toggling (PRESTO) activity. We tend to introduce a technique to automatically select many controls of the generator providing straightforward and precise tuning. The same technique is subsequently employed to deterministically guide the generator toward test sequences with improved fault-coverage-to-pattern-count ratios. Furthermore, this project proposes an LP check compression methodology that permits shaping the take a look at power envelope in a very fully predictable, accurate, and versatile fashion by adapting the PRESTO-based logic BIST (LBIST) infrastructure. The proposed hybrid theme efficiently combines check compression with LBIST, where each techniques will work synergistically to deliver top quality tests. Experimental results obtained for industrial styles illustrate the feasibility of the proposed take a look at schemes and are reported herein.
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