发明名称 |
Method for performing memory access management, and associated memory device and controller thereof |
摘要 |
A method for accessing a memory includes: utilizing a Flash memory to perform a plurality of sensing operations with a plurality of different sensing voltages respectively corresponding to the plurality of sensing operations; according to the plurality of sensing operations, generating a first digital value of a Flash cell of the Flash memory; according to the plurality of sensing operations and the first digital value, generating at least a second digital value of the Flash cell; and obtaining soft information of the Flash cell according to the second digital value. The first digital value and the second digital value are used for determining information of a same bit stored in the Flash cell, a number of possible bit(s) of the Flash cell directly corresponds to a number of possible states of the Flash cell, and the obtained soft information is used for performing soft decoding. |
申请公布号 |
US9239685(B2) |
申请公布日期 |
2016.01.19 |
申请号 |
US201414327580 |
申请日期 |
2014.07.10 |
申请人 |
Silicon Motion Inc. |
发明人 |
Yang Tsung-Chieh;Chang Hsiao-Te;Wang Wen-Long |
分类号 |
G11C16/06;G06F3/06;G11C11/56;G11C16/26 |
主分类号 |
G11C16/06 |
代理机构 |
|
代理人 |
Hsu Winston;Margo Scott |
主权项 |
1. A method for accessing a memory, the method comprising:
utilizing a Flash memory to perform a plurality of sensing operations with a plurality of different sensing voltages respectively corresponding to the plurality of sensing operations; according to the plurality of sensing operations, generating a first digital value of a Flash cell of the Flash memory; according to the plurality of sensing operations and the generated first digital value, generating at least a second digital value of the Flash cell; and obtaining soft information of the Flash cell according to the at least one second digital value;wherein the first digital value and the at least one second digital value are used for determining information of a same bit stored in the Flash cell, a number of possible bit(s) of the Flash cell directly corresponds to a number of possible states of the Flash cell, and the obtained soft information is used for performing soft decoding. |
地址 |
Jhubei, Hsinchu County TW |