Non-volatile semiconductor memory device for selectively re-checking word lines
    10.
    发明授权
    Non-volatile semiconductor memory device for selectively re-checking word lines 有权
    用于选择性地重新检查字线的非易失性半导体存储器件

    公开(公告)号:US06711061B2

    公开(公告)日:2004-03-23

    申请号:US10223488

    申请日:2002-08-20

    IPC分类号: G11C1604

    摘要: A method for settling threshold voltages of word lines on a predetermined level in an erasing processing of a non-volatile semiconductor memory device so as to speed up the erasing processing. A word latch circuit is provided for each word line and the threshold voltage of each memory cell is managed for each word line in a selected memory block. Each word latch circuit is shared by a plurality of word lines so as to reduce the required chip area. A rewriting voltage is set for each finished non-volatile memory and the voltage information is stored in the boot area of the non-volatile memory, so that the voltage is recognized by the system each time the system is powered.

    摘要翻译: 一种用于在非易失性半导体存储器件的擦除处理中在预定电平上建立字线的阈值电压的方法,以加速擦除处理。 为每个字线提供字锁存电路,并且在所选择的存储器块中为每个字线管理每个存储器单元的阈值电压。 每个字锁存电路由多个字线共享,以便减少所需的芯片面积。 为每个完成的非易失性存储器设置重写电压,并且电压信息被存储在非易失性存储器的引导区域中,使得每当系统供电时,系统识别电压。