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:
Oct. 23, 2018
Filed:
Sep. 11, 2017
Applicant:
Renesas Electronics Corporation, Tokyo, JP;
Inventor:
Hirokazu Nagase, Tokyo, JP;
Assignee:
RENESAS ELECTRONICS CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C 11/34 (2006.01); G11C 16/04 (2006.01); G11C 16/10 (2006.01); G11C 16/32 (2006.01);
U.S. Cl.
CPC ...
G11C 16/10 (2013.01); G11C 16/32 (2013.01);
Abstract
A storage device includes a plurality of flash memory cells, a controller which writes data into a memory cell which is used as the cell which stores data therein in the plurality of flash memory cells and performs resetting of a threshold voltage of a timer cell used for decision of a threshold voltage of the memory cell in the plurality of flash memory cells and a level decision unit which estimates a state of a second threshold voltage which is the current threshold voltage of the memory cell on the basis of a first threshold voltage which is the current threshold voltage of the timer cell.