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:
Sep. 13, 2022
Filed:
May. 27, 2021
Winbond Electronics Corp., Taichung, TW;
Chi-Shun Lin, Fremont, CA (US);
Winbond Electronics Corp., Taichung, TW;
Abstract
A memory structure and an operation method are provided. The memory structure comprises a memory array, having plural blocks, each of the blocks having plural word lines coupled to memory cells; and one marker bit column having one or plural marker bit units, and the one plural marker bit units being coupled to one or the plural word lines. In performing a block erase operation to the blocks of the memory array, for each block, the controller pre-reads the data from the marker bit unit is pre-read, and the marker bit unit is erased during performing the block erase operation if the marker bit indicates a program state, and the block erase operation is skipped if the marker bit indicates an erase state.