公开(公告)号：US20160148703A1

公开(公告)日：2016-05-26

申请号：US14883922

申请日：2015-10-15

申请人： KWANGHOON KIM ,  Younggeon Yoo ,  Junjin Kong

发明人： KWANGHOON KIM ,  Younggeon Yoo ,  Junjin Kong

IPC分类号： G11C16/26 ,  G11C16/04

CPC分类号： G11C16/26 ,  G11C7/1006 ,  G11C11/5642 ,  G11C16/0483

摘要： An operation method of a nonvolatile memory system in accordance with example embodiments of inventive concepts includes detecting an on-cell count of the memory cells using a sampling start voltage, comparing the detected on-cell count with a reference value, setting a plurality of sampling voltages based on the comparison result, performing a sampling operation with respect to the memory cells using the sampling voltages, and detecting an optimum read voltage for distinguishing any one program state among the program states based on a result of the sampling operation.

摘要翻译： 根据本发明的示例性实施例的非易失性存储器系统的操作方法包括使用采样开始电压来检测存储器单元的单元计数，将检测到的单元计数与参考值进行比较，设置多个采样 基于比较结果的电压，使用采样电压对存储单元执行采样操作，并且基于采样操作的结果，检测用于区分程序状态中的任何一个程序状态的最佳读取电压。