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    • 3. 发明授权
    • Charge-sharing technique during flash memory programming
    • 闪存编程中的电荷共享技术
    • US07196938B1
    • 2007-03-27
    • US11229530
    • 2005-09-20
    • Yonggang WuGuowei WangNian YangAaron Lee
    • Yonggang WuGuowei WangNian YangAaron Lee
    • G11C16/04
    • G11C16/12
    • A non-volatile memory cell array, such as a Flash NOR array, is programmed by applying voltages to bit lines that connect to memory cells in the memory cell array. A first bit line corresponding to a first memory cell in the memory array may be turned on to perform a first programming operation for the first memory cell and second bit line corresponding to a second memory cell in the memory array may be turned on to perform a second programming operation that is configured to complete after the first programming operation. The turning on/off of the first and second bit lines may be overlapped to share charge between the first and second bit lines. This overlapping can reduce wasted power and decrease programming pulse overshoot problems.
    • 诸如闪存NOR阵列的非易失性存储单元阵列通过将电压施加到连接到存储单元阵列中的存储单元的位线来编程。 对应于存储器阵列中的第一存储器单元的第一位线可以被接通以对第一存储器单元执行第一编程操作,并且可以打开与存储器阵列中的第二存储器单元相对应的第二位线来执行 第二编程操作被配置为在第一编程操作之后完成。 第一和第二位线的导通/截止可以重叠以在第一和第二位线之间共享电荷。 这种重叠可以减少浪费的功率并减少编程脉冲过冲问题。
    • 8. 发明授权
    • Method and apparatus for high voltage operation for a high performance semiconductor memory device
    • 用于高性能半导体存储器件的高电压操作的方法和装置
    • US07613044B2
    • 2009-11-03
    • US11950811
    • 2007-12-05
    • Nian YangBoon-Aik AngYonggang WuGuowei WangFan Wan Lai
    • Nian YangBoon-Aik AngYonggang WuGuowei WangFan Wan Lai
    • G11C11/34G11C16/04G11C16/06G11C7/10
    • G11C7/1039G11C8/08G11C16/0475G11C16/0491G11C16/08G11C16/30G11C2207/2245
    • A method and apparatus are provided for high performance, high voltage memory operations on selected memory cells (200) of a semiconductor memory device (100). A high voltage generator (106) during program or erase operations provides a continuous high voltage level (702) on selected word lines (502) and maintains a continuous high voltage level supply to a bit line decoder (120) which sequentially provides the high voltage level (706) to a first portion of bit lines (504) and discharges (708) those bit lines (504) before providing the high voltage level to a second portion (710). For additional improvements to program operations, the high voltage generator (106) decouples high voltages provided to the word lines (502) and the bit lines (504) by providing a current flow control device (1208) therebetween and provides a boosting voltage at a time (1104) to overcome a voltage level drop (1102) resulting from a capacitor load associated with selected bit lines (504) and/or the bit line decoder (120) precharges (1716) a second portion of the bit lines (504) while providing a high voltage level to a first portion to program (1706) a first portion of memory cells (200). For improvements to read operations, whether dynamic reference cells (2002) are blank is determined by providing non-identically regulated high voltage levels from a first voltage source (2112) to the dynamic reference cells (2002) and from a second voltage source (2104) to static reference cells (2004) and, if the dynamic reference cells (2002) are not blank, reads selected memory cells (200) by providing identically regulated high voltage levels to the selected memory cells (200), the dynamic reference cells (2002) and the static reference cells (2004).
    • 提供了一种用于在半导体存储器件(100)的选定存储单元(200)上进行高性能,高电压存储器操作的方法和装置。 在编程或擦除操作期间,高电压发生器(106)在所选择的字线(502)上提供连续的高电压电平(702),并且向位线解码器(120)保持连续的高电压电平供应,位线解码器(120)依次提供高电压 电平(706)到位线(504)的第一部分,并且在将高电压电平提供给第二部分(710)之前对那些位线(504)进行放电(708)。 为了对编程操作进一步改进,高电压发生器(106)通过在其间提供电流控制装置(1208)来解耦提供给字线(502)和位线(504)的高电压,并在 时间(1104)以克服由与所选位线(504)和/或位线解码器(120)相关联的电容器负载导致的电压电平下降(1102),所述位线(504)的第二部分预充电(1716) 同时向第一部分提供高电压电平以对存储单元(200)的第一部分进行编程(1706)。 为了改进读取操作,动态参考单元(2002)是空白的是通过从第一电压源(2112)到动态参考单元(2002)和从第二电压源(2104)提供非相同调节的高电压电平来确定的 )到静态参考单元(2004),并且如果动态参考单元(2002)不为空白,则通过向所选择的存储单元(200),动态参考单元(200)提供相同调节的高电压电平来读取所选存储单元(200) 2002)和静态参考单元(2004)。