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. 29, 2022
Filed:
Oct. 07, 2020
Micron Technology, Inc., Boise, ID (US);
Harish Reddy Singidi, Fremont, CA (US);
Giuseppe Cariello, Boise, ID (US);
Deping He, Boise, ID (US);
Scott Anthony Stoller, Boise, ID (US);
Devin Batutis, San Jose, CA (US);
Preston Allen Thomson, Boise, ID (US);
Micron Technology, Inc., Boise, ID (US);
Abstract
Devices and techniques for a flash memory block retirement policy are disclosed herein. In an example embodiment, a first memory block is provisionally removed from service in response to encountering read errors in the first memory block. Memory pages of the first memory block are tested in a second mode comprising reading memory pages at different read voltages. A raw bit error rate (RBER) or a read window budget (RWB) is determined for memory pages at the different read voltages and the provisionally removed first memory block is returned to service or retired based on the determined RBER or the RWB.