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:
Aug. 27, 2024
Filed:
Oct. 28, 2022
Winbond Electronics Corp., Taichung, TW;
Masaru Yano, Kanagawa, JP;
Winbond Electronics Corp., Taichung, TW;
Abstract
A semiconductor memory device capable of automatically restoring writing interrupted due to a momentary stop or a fluctuation of a power supply voltage is provided. A non-volatile memory of the disclosure includes a memory cell array formed with a NOR array and a variable resistance array. When the power supply voltage drops to a power-off level during writing into the NOR array, a reading/writing control unit writes unwritten data into the variable resistance array. Subsequently, when a power-on of the power supply voltage is detected, the reading/writing control unit reads the unwritten data from the variable resistance array and writes the unwritten data into the NOR array, so that interrupted writing is restored.