Invention Grant
- Patent Title: Data refresh in non-volatile memory
- Patent Title (中): 非易失性存储器中的数据刷新
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Application No.: US13680507Application Date: 2012-11-19
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Publication No.: US08972652B2Publication Date: 2015-03-03
- Inventor: Yong K. Kim , Keith H. Wong , Mark A. McClain
- Applicant: Spansion LLC
- Applicant Address: US CA Sunnyvale
- Assignee: Spansion LLC
- Current Assignee: Spansion LLC
- Current Assignee Address: US CA Sunnyvale
- Agency: Sterne, Kessler, Goldstein & Fox PLLC
- Main IPC: G06F12/00
- IPC: G06F12/00 ; G11C16/10 ; G11C16/34 ; G11C16/02 ; G11C16/16

Abstract:
A method of reducing read errors in a non-volatile memory device that result from bit-line or word-line disturb conditions generated by erase operations includes selecting a subset of a memory array for refresh after each erase operation. A pointer to the refresh target section is updated as part of the method to direct the refresh operation to the appropriate subset of the memory array. Refresh may be performed subsequent to an erase operation or concurrently therewith. By distributing the time consumed by refresh operations over many erase operations so the relative refresh time for any one erase becomes small.
Public/Granted literature
- US20140143473A1 DATA REFRESH IN NON-VOLATILE MEMORY Public/Granted day:2014-05-22
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