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:
Feb. 04, 2020
Filed:
Aug. 29, 2018
Applicant:
Toshiba Memory Corporation, Tokyo, JP;
Inventor:
Naoki Shimizu, Kawasaki Kanagawa, JP;
Assignee:
TOSHIBA MEMORY CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11C 13/00 (2006.01);
U.S. Cl.
CPC ...
G11C 13/0069 (2013.01); G11C 13/004 (2013.01); G11C 13/0026 (2013.01); G11C 13/0028 (2013.01); G11C 13/0035 (2013.01); G11C 13/0064 (2013.01); G11C 2013/0076 (2013.01);
Abstract
A semiconductor memory device includes nonvolatile memory cells. A first circuit is configured to receive data to be written to the plurality of memory cells, read data from the plurality of memory cells, compare the data to be written to the data that was read, identify each memory cell presently storing a data value that differs from a data value to be written, and identify weak bit data in the existing data. A second circuit is configured to simultaneously program the weak bits and memory cells identified as presently storing the data value that differs from the data value to be written to the memory cell.