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:
Jul. 06, 2021
Filed:
Oct. 23, 2019
Applicant:
Micron Technology, Inc., Boise, ID (US);
Inventors:
Assignee:
Micron Technology, Inc., Boise, ID (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C 11/406 (2006.01); G11C 11/408 (2006.01);
U.S. Cl.
CPC ...
G11C 11/40611 (2013.01); G11C 11/4087 (2013.01);
Abstract
Disclosed herein is an apparatus that includes a memory cell array, a row hammer refresh circuit configured to generate a row hammer refresh address based on an access history of the memory cell array, a redundancy circuit configured to store a plurality of defective addresses of the memory cell array, and a row pre-decoder configured to skip a refresh operation on the row hammer refresh address when the row hammer refresh address matches any one of the plurality of defective addresses.