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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

Programming method for multi-level cell flash for minimizing inter-cell interference
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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