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:
Jun. 01, 2021
Filed:
May. 11, 2018
Sony Semiconductor Solutions Corporation, Kanagawa, JP;
Yotaro Mori, Kanagawa, JP;
Makoto Kitagawa, Kanagawa, JP;
Jun Okuno, Kanagawa, JP;
Haruhiko Terada, Kanagawa, JP;
SONY SEMICONDUCTOR SOLUTIONS CORPORATION, Kanagawa, JP;
Abstract
A memory apparatus includes a memory cell disposed at an intersection of a first wiring line and a second wiring line, and including a variable resistor and a selector, the variable resistor having a resistance state that changes to a first resistance state and a second resistance state, and a drive circuit that writes data to the memory cell by changing the variable resistor from the first resistance state to the second resistance state, and erases the data stored in the memory cell by changing the variable resistor from the second resistance state to the first resistance state. When erasing the data, the drive circuit changing in a stepwise manner a voltage applied to the memory cell, and changing in a stepwise manner a current limit value that limits a magnitude of a current flowing through the memory cell.