Title:
メモリシステムをプログラムする方法
Document Type and Number:
Japanese Patent JP7414921
Kind Code:
B2
Abstract:
A memory system includes a plurality of memory cells, and the memory cells are multiple-level cells. The memory system performs program operations to program the memory cells. After each program operation, at least one threshold voltage test is performed to determine if threshold voltages of the memory cells are greater than the verification voltage. When the threshold voltage of a first memory cell is determined to be greater than a first verification voltage, the first memory cell will be inhibited from being programmed during the next program operation. When the threshold voltage of a second memory cell is determined to newly become greater than a second verification voltage, where the second verification voltage is greater than the first verification voltage, the second memory cell will be programmed again during the next program operation.
Inventors:
Li Hibo
Mui Manrun
Mui Manrun
Application Number:
JP2022151045A
Publication Date:
January 16, 2024
Filing Date:
September 22, 2022
Export Citation:
Assignee:
Yangtze Memory Technologies Co.,Ltd.
International Classes:
G11C11/56; G11C16/34
Domestic Patent References:
| JP2005243230A | ||||
| JP7148727B2 | ||||
| JP11317087A |
Foreign References:
| US20160118126 | ||||
| US20140219027 | ||||
| US20110194346 |
Attorney, Agent or Firm:
Hiromori Arai