Nonvolatile memory control method and semiconductor device
    10.
    发明专利
    Nonvolatile memory control method and semiconductor device 有权
    非易失性存储器控制方法和半导体器件

    公开(公告)号:JP2010039983A

    公开(公告)日:2010-02-18

    申请号:JP2008205414

    申请日:2008-08-08

    IPC分类号: G06F12/16 G11C16/02

    CPC分类号: G11C16/10 G11C16/105

    摘要: PROBLEM TO BE SOLVED: To return a threshold to a state before fluctuation without undesirably increasing writing frequencies in a nonvolatile memory. SOLUTION: A system includes: a nonvolatile memory (14); a random number generator (12); and a controller (11) capable of accessing the nonvolatile memory, and determines an area for refreshment with the controller based on random numbers generated by the random number generator whenever the nonvolatile memory is accessed. Then, the controller is made to execute refreshment control for performing rewrite to the area for refreshment. By such refreshment control, the threshold is returned to the state before fluctuation without undesirably increasing writing frequencies. COPYRIGHT: (C)2010,JPO&INPIT

    摘要翻译: 要解决的问题:将门限返回到波动之前的状态,而不会不期望地增加非易失性存储器中的写入频率。 解决方案:系统包括:非易失性存储器(14); 随机数发生器(12); 以及能够访问非易失性存储器的控制器(11),并且每当访问非易失性存储器时,基于由随机数发生器生成的随机数来确定与控制器的刷新区域。 然后,使控制器执行刷新控制,以对刷新区进行重写。 通过这种刷新控制,阈值返回到波动之前的状态,而不会不期望地增加写入频率。 版权所有(C)2010,JPO&INPIT