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:
Jan. 11, 2022
Filed:
Jan. 14, 2020
Winbond Electronics Corp., Taichung, TW;
Norio Hattori, Kanagawa, JP;
Winbond Electronics Corp., Taichung, TW;
Abstract
A semiconductor memory device capable of smoothing the number of cycles of programming/erasing between blocks is provided. The semiconductor memory device includes: a memory cell array; an address translation table defining a relationship between logical address information and physical address information; an invalid block table managing the physical address information for identifying to-be-erased blocks of the blocks; a free block table managing the physical address information used for identifying erased usable blocks; an erasing element for erasing the blocks; a controller. When an erasing command and first logical address information are received from environment, the controller erases the block of the physical address information selected from the invalid block table, and rewrites the address translation table in a manner that the physical address information selected from the free block table corresponds to the first logical address information received from the external environment.