Intel Corporation

Suriya Kumar

James W Tschanz

Charles Augustine

Suraj Sindia

Carlos Alfonso Tokunaga

Clark N Vandam

Ricardo Ascazubi

Curtis Shirota

Systems and methods for latch-up detection and mitigation. One aspect includes a method implemented in a system divided into a plurality of power blocks, where each power block is powered by a corresponding power rail and includes a voltage droop monitoring circuitry. The method comprises receiving frequency information from the plurality of voltage droop monitoring circuitries; normalizing the received frequency information from each of the plurality of voltage droop monitoring circuitries; creating a matrix of cross-correlation values based on the normalized frequency information between each pair of the plurality of power blocks; determining deviations in the cross-correlation values indicating an occurrence of voltage droop; determining an abnormal variation based on the determined deviations to identify a first power block, out of the plurality of power blocks, experiencing a latch-up event; and resetting power to the first power block without interrupting power to rest of the plurality of power blocks.

Systems and methods for latch-up detection and mitigation

Some embodiments include apparatus and methods using a first ring oscillator, a second ring oscillator, and circuit coupled to the first and second ring oscillators. The first ring oscillator includes a first memory cell and a first plurality of stages coupled to the first memory cell. The second ring oscillator includes a second memory cell and a second plurality of stages coupled to the second memory cell. The circuit includes a first input node coupled to an output node of the first ring oscillator and a second input node coupled to an output node of the second ring oscillator. In one of such embodiments, the circuit can operate to generate identification information to authenticate the apparatus.

Physically unclonable function circuit including memory elements

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Portland, OR, United States of America

Suriya Kumar