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:
Dec. 10, 2024
Filed:
Sep. 23, 2021
Stmicroelectronics International N.v., Geneva, CH;
Kedar Janardan Dhori, Ghaziabad, IN;
STMicroelectronics International N.V., Geneva, CH;
Abstract
A static random access memory (SRAM) device disclosed herein includes an array of SRAM cells powered between first and second voltages. A reference voltage generator generates a reference voltage that is proportional to absolute temperature, with a magnitude curve of the reference voltage being based upon a control word. A low dropout amplifier sets and maintains the second voltage as being equal to the reference voltage. Control circuitry generates the control word based upon process variation information about the SRAM device. In one instance, the control circuitry monitors a canary bit-cell and increments the control word, to thereby increase the magnitude curve of the reference voltage, until the canary bit-cell fails. In another instance, the control circuitry measures the oscillation frequency of a ring oscillator, and selects the control word based upon the measured oscillation frequency.