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:
Aug. 20, 2024
Filed:
Sep. 16, 2022
Micron Technology, Inc., Boise, ID (US);
Yang Lu, Boise, ID (US);
Sujeet Ayyapureddi, Boise, ID (US);
Edmund J. Gieske, Boise, ID (US);
Cagdas Dirik, Indianola, WA (US);
Ameen D. Akel, Rancho Cordova, CA (US);
Elliott C. Cooper-Balis, San Jose, CA (US);
Amitava Majumdar, Boise, ID (US);
Robert M. Walker, Raleigh, NC (US);
Danilo Caraccio, Milan, IT;
Micron Technology, Inc., Boise, ID (US);
Abstract
Systems, methods, and apparatus for memory device security and row hammer mitigation are described. A control mechanism may be implemented in a front-end and/or a back-end of a memory sub-system to refresh rows of the memory. A row activation command having a row address at control circuitry of a memory sub-system and incrementing a first count of a row counter corresponding to the row address stored in a content addressable memory (CAM) of the memory sub-system may be received. Control circuitry may determine whether the first count is greater than a row hammer threshold (RHT) minus a second count of a CAM decrease counter (CDC); the second count may be incremented each time the CAM is full. A refresh command to the row address may be issued when a determination is made that the first count is greater than the RHT minus the second count.