Circuits and methods for detecting decreases in a supply voltage in an integrated circuit

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 12249988
APP PUB NO 20210313989A1
SERIAL NO

17353549

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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An integrated circuit includes a first voltage decrease detection circuit that has a first comparator circuit that compares a supply voltage in the integrated circuit to a threshold voltage to generate a first detection signal that indicates a decrease in the supply voltage, and a first timestamp storage circuit that stores a first timestamp in response to the first detection signal indicating the decrease. The integrated circuit includes a second voltage decrease detection circuit that has a second comparator circuit that compares the supply voltage to the threshold voltage to generate a second detection signal that indicates the decrease, and a second timestamp storage circuit that stores a second timestamp in response to the second detection signal indicating the decrease. The integrated circuit includes a control circuit that determines a location of a source of the decrease in the integrated circuit based on the first and the second timestamps.

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Patent Owner(s)

  • ALTERA CORPORATION

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chen, Guang Fremont, US 109 789
Kondapalli, Venu San Jose, US 3 20
Liu, Ping-Chen Fremont, US 29 231

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