The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 01, 2022
Filed:
Sep. 24, 2020
Advanced Micro Devices, Inc., Santa Clara, CA (US);
Ravinder Reddy Rachala, Austin, TX (US);
Advanced Micro Devices, Inc., Santa Clara, CA (US);
Abstract
A system and method for measuring power supply variations are described. A functional unit includes one or more power supply monitors capable of measuring power supply variations. The power supply monitors forego use of a clock signal from clock generating circuitry and forego use of a reference voltage from a reference power supply. The power supply monitors use an output of a source ring oscillator as a clock signal for the sequential elements of a counter. The counter measures a number of revolutions of a measuring ring oscillator within a period of the output of the source oscillator. The revolutions of the measuring ring oscillator are associated with a number of rising edges and falling edges of the output signal of the measuring ring oscillator. An encoder converts the output of the sequential elements to a binary value, and sends the binary value to an external age tracking unit.