Invention Grant
US07986554B2 Different combinations of wordline order and look-ahead read to improve non-volatile memory performance
有权
字线顺序和预先读取的不同组合可以改善非易失性存储器的性能
- Patent Title: Different combinations of wordline order and look-ahead read to improve non-volatile memory performance
- Patent Title (中): 字线顺序和预先读取的不同组合可以改善非易失性存储器的性能
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Application No.: US12051492Application Date: 2008-03-19
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Publication No.: US07986554B2Publication Date: 2011-07-26
- Inventor: Yan Li
- Applicant: Yan Li
- 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: G11C11/34
- IPC: G11C11/34

Abstract:
For a non-volatile memory storing three or more bits per cell, pages of data are written in an order where more than one, but less than all of the logical pages that a physical page along a wordline can store are written concurrently. More than one, but less than all of the logical pages that a physical page along a wordline can store are then written concurrently on an adjacent wordline. The process then comes back to the first wordline and writes at least one more logical page. A process is also described where one or more logical pages are written into a physical page along a wordline, after which one or more logical pages are written into a physical page along an adjacent wordline. A read operation is then performed on the first wordline and the resultant read is corrected based on the result of programming the adjacent wordline. This corrected read is then used in writing at least one more logical page in a second programming operation on the first wordline.
Public/Granted literature
- US20090237999A1 Different Combinations of Wordline Order and Look-Ahead Read to Improve Non-Volatile Memory Performance Public/Granted day:2009-09-24
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