Invention Grant
US08228728B1 Programming method for multi-level cell flash for minimizing inter-cell interference
有权
用于最小化单元间干扰的多级单元闪存的编程方法
- Patent Title: Programming method for multi-level cell flash for minimizing inter-cell interference
- Patent Title (中): 用于最小化单元间干扰的多级单元闪存的编程方法
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Application No.: US12881127Application Date: 2010-09-13
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Publication No.: US08228728B1Publication Date: 2012-07-24
- Inventor: Xueshi Yang , Zining Wu
- Applicant: Xueshi Yang , Zining Wu
- Applicant Address: BM Hamilton
- Assignee: Marvell International Ltd.
- Current Assignee: Marvell International Ltd.
- Current Assignee Address: BM Hamilton
- Main IPC: G11C16/04
- IPC: G11C16/04

Abstract:
Systems, methods and computer program products for minimizing floating gate coupling interference and threshold voltage drift associated with flash memory cells are described. In some implementations, the memory cells can be programmed in a predetermined sequence that allows pages with the most-significant bit (MSB) and central significant bit (CSB) to be programmed first prior to programming pages with the least-significant bit (LSB). This sequence allows neighboring cells (e.g., cells neighboring a target cell) to be programmed first so as to reduce the floating gate coupling interference and threshold voltage drift on the target cell that is to be programmed in the subsequent stage. To accommodate the programming sequence (e.g., at the device level), additional buffer memories can be added.
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