Invention Grant
- Patent Title: Systems and methods for lower page writes
- Patent Title (中): 较低页面写入的系统和方法
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Application No.: US14276925Application Date: 2014-05-13
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Publication No.: US08902652B1Publication Date: 2014-12-02
- Inventor: Jianmin Huang , Bo Lei , Jun Wan , Gerrit Jan Hemink , Steven T. Sprouse , Dana Lee
- Applicant: SanDisk Technologies Inc.
- Applicant Address: US TX Plano
- Assignee: SanDisk Technologies Inc.
- Current Assignee: SanDisk Technologies Inc.
- Current Assignee Address: US TX Plano
- Agency: Davis Wright Tremaine LLP
- Main IPC: G11C16/04
- IPC: G11C16/04 ; G11C16/10
Abstract:
In a Multi Level Cell (MLC) memory array block in which lower pages are written first, before any upper pages, the lower page data is subject to an exclusive OR (XOR) operation so that if any lower page becomes uncorrectable by ECC (UECC) then the page can be recovered using XOR. Lower pages in such blocks may be written in nonsequential order.
Information query
