Method and apparatus for controlling slope of word line voltage in nonvolatile memory device
    83.
    发明申请
    Method and apparatus for controlling slope of word line voltage in nonvolatile memory device 有权
    用于控制非易失性存储器件中字线电压斜率的方法和装置

    公开(公告)号:US20070025155A1

    公开(公告)日:2007-02-01

    申请号:US11354917

    申请日:2006-02-16

    CPC classification number: G11C16/12 G11C16/0483 G11C16/10 G11C16/30 G11C16/32

    Abstract: A nonvolatile memory device includes a nonvolatile memory cell array including a plurality of nonvolatile memory cells connected to a plurality of word lines, a word line voltage generator configured to generate first and second sequences of voltage pulses. The device selectively supplies one of the first and second sequences of voltage pulses to a selected one of the word lines to program the nonvolatile memory cells connected to the selected word line. A slope of at least one voltage pulse of the first sequence of voltage pulses is greater than a slope of at least one voltage pulse of the second sequence of voltage pulses. In general, the first sequence is applied to word lines far away from the string select line (SSL), and the second sequence is applied to word lines that are close to the SSL.

    Abstract translation: 非易失性存储器件包括非易失性存储单元阵列,包括连接到多个字线的多个非易失性存储器单元,字线电压发生器,被配置为产生第一和第二电压脉冲序列。 该装置选择性地将第一和第二电压脉冲序列中的一个提供给选定的字线之一,以编程连接到所选字线的非易失存储器单元。 电压脉冲的第一序列的至少一个电压脉冲的斜率大于第二电压脉冲序列的至少一个电压脉冲的斜率。 通常,第一个序列应用于远离字符串选择行(SSL)的字线,第二个序列应用于接近SSL的字线。

    Flash memory device and program verification method thereof
    86.
    发明授权
    Flash memory device and program verification method thereof 有权
    闪存设备及其程序验证方法

    公开(公告)号:US07099196B2

    公开(公告)日:2006-08-29

    申请号:US10712652

    申请日:2003-11-12

    CPC classification number: G11C16/3454 G11C16/0483 G11C16/30

    Abstract: Disclosed is a flash memory device and a program verification method thereof which can prevent a misjudgment as to whether flash memory cells are programmed or not. The flash memory device includes: a program verification voltage generator for variably generating program verification voltages used to verify whether the flash memory cells are programmed or not and a word line level selector for transferring the program verification voltages to word lines connected to control gates of the flash memory cells. The flash memory cells that are verified as uncertain as to whether the flash memory cells are programmed or not can be completely programmed since the program verification operation is carried out with program verification voltage levels that are changed according to the selective activations of the program verification control signals.

    Abstract translation: 公开了一种闪速存储器件及其程序验证方法,其可以防止对闪存单元是否被编程的错误判断。 闪速存储装置包括:程序验证电压发生器,用于可变地产生用于验证闪存单元是否被编程的程序验证电压;以及字线电平选择器,用于将程序验证电压传送到连接到控制门的字线 闪存单元。 由于程序验证操作是根据程序验证控制的选择性激活而改变的程序验证电压进行的,所以被验证为对闪速存储器单元是否被编程的闪存单元是否可以被完全编程 信号。

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