Method of controlling a semiconductor storage device
    3.
    发明授权
    Method of controlling a semiconductor storage device 有权
    控制半导体存储装置的方法

    公开(公告)号:US08583972B2

    公开(公告)日:2013-11-12

    申请号:US13486718

    申请日:2012-06-01

    IPC分类号: G11C29/00

    摘要: A method of controlling a nonvolatile semiconductor memory including a plurality of blocks, each one of the plurality of blocks being a unit of data erasing, includes determining a monitored block as a candidate for refresh operation from among the plurality of blocks based on a predetermined condition. The method includes monitoring an error count of data stored in the monitored block and not monitoring an error count of data stored in blocks excluding the monitored block among the plurality of blocks. The method also includes performing the refresh operation on data stored in the monitored block in which the error count is larger than a first threshold value.

    摘要翻译: 一种控制包括多个块的非易失性半导体存储器的方法,所述多个块中的每一个是数据擦除单元,包括:基于预定条件,将所监视的块作为所述多个块中的刷新操作的候补确定 。 该方法包括监视存储在所监视的块中的数据的错误计数,并且不监视存储在多个块中的被监视块之外的块中存储的数据的错误计数。 该方法还包括对存储在监视块中的数据执行刷新操作,其中错误计数大于第一阈值。