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    • 3. 发明授权
    • Methods to operate a memory cell
    • 操作存储单元的方法
    • US08619475B2
    • 2013-12-31
    • US13204014
    • 2011-08-05
    • Seiichi AritomeSoojin WiAngelo ViscontiSilvia BeltramiChristian Monzio CompagnoniAlessandro Sottocornola Spinelli
    • Seiichi AritomeSoojin WiAngelo ViscontiSilvia BeltramiChristian Monzio CompagnoniAlessandro Sottocornola Spinelli
    • G11C11/34
    • G11C16/3404G11C11/5628G11C16/3459
    • Memory devices and methods for operating a memory cell are disclosed, such as a method that uses two program verify levels (e.g., low program verify level and program verify level) to determine how a data line voltage should be increased. A threshold voltage of a memory cell that has been biased with a programming voltage is determined and its relationship with the two program verify levels is determined. If the threshold voltage is less than the low program verify level, the data line can be biased at a ground voltage (e.g., 0V) for a subsequent programming pulse. If the threshold voltage is greater than the program verify level, the data line can be biased at an inhibit voltage for a subsequent programming pulse. If the threshold voltage is between the two program verify levels, the data line voltage can be increased for each subsequent programming pulse in which the threshold voltage is between the two program verify levels.
    • 公开了用于操作存储器单元的存储器件和方法,诸如使用两个程序验证电平(例如,低程序验证电平和程序验证电平)来确定如何增加数据线电压的方法。 确定已经用编程电压偏置的存储单元的阈值电压,并确定其与两个程序验证电平的关系。 如果阈值电压小于低编程验证电平,则可以将数据线偏置在接地电压(例如0V)以用于随后的编程脉冲。 如果阈值电压大于程序验证电平,则数据线可以被偏置在用于后续编程脉冲的禁止电压。 如果阈值电压在两个程序验证电平之间,则对于其中阈值电压在两个程序验证电平之间的每个后续编程脉冲,可以增加数据线电压。