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    • 62. 发明授权
    • Multi-level-cell programming methods of non-volatile memories
    • 非易失性存储器的多级单元编程方法
    • US07180780B1
    • 2007-02-20
    • US11281181
    • 2005-11-17
    • Wen Chiao HoChin Hung ChangKuen Long ChangChun Hsiung Hung
    • Wen Chiao HoChin Hung ChangKuen Long ChangChun Hsiung Hung
    • G11C11/34G11C7/00
    • G11C16/12G11C11/5671G11C16/0475G11C16/3459
    • The present invention provides a novel method in altering the sequence of multi-level-cell programming in a multi-bit-cell of a nitride trapping memory cell that reduces or eliminates voltage threshold shifts between program steps while avoiding the suppression in the duration of a read window caused by a complementary bit disturbance. In a first embodiment, the present invention programs the multi-level cell in a multi-bit-cell having four bits in the following order: programming a third program level (level3), programming a first program level (level1) and a second program level (level2) to level 1, and programming the second program level from the first program level. In a second embodiment, the present invention programs the multi-level cell in the multi-bit-cell having four bits in the following order: programming a third program level (level3), programming a second program level (level2), and programming a first program level (level 1).
    • 本发明提供了一种在氮化物俘获存储器单元的多位单元中改变多电平单元编程的顺序的新颖方法,其减少或消除了程序步骤之间的电压阈值偏移,同时避免了在 读取窗口由互补位干扰引起。 在第一实施例中,本发明按照以下顺序在具有四位的多位单元中编程多电平单元:编程第三程序级(level3),编程第一程序级(level1)和第二程序 级别(level2)到级别1,并从第一程序级别编程第二程序级别。 在第二实施例中,本发明按照以下顺序对具有四位的多比特单元中的多电平单元进行编程:编程第三程序级(level3),编程第二程序级(level2),并编程 第一程序级(1级)。
    • 63. 发明授权
    • Rapid on chip voltage generation for low power integrated circuits
    • 用于低功率集成电路的快速片上电压产生
    • US06255900B1
    • 2001-07-03
    • US09284435
    • 1999-04-12
    • Kuen-Long ChangChun-Hsiung HungKen-Hui ChenTien-Shin HoI-Long LeeTzeng-Hei ShiauRay-Lin Wan
    • Kuen-Long ChangChun-Hsiung HungKen-Hui ChenTien-Shin HoI-Long LeeTzeng-Hei ShiauRay-Lin Wan
    • G05F110
    • G11C16/30G05F3/242G11C5/145G11C16/08H02M3/07
    • An on chip voltage generation circuit is provided suitable for use on integrated circuits such as flash memory devices with a low power supply voltage (e.g., 2.7 to 3.6 volts). A voltage boost circuit is coupled to the supply voltage input and to a boost signal, which boosts the on-chip voltage at a node on the integrated circuit in response to a transition of the boost signal. The voltage boost circuit has a first mode which in response to the transition boosts the on-chip voltage at a first rate of boosting until a first threshold, and a second mode which in response to the transition boosts the on-chip voltage at a second rate of boosting until a second threshold. The second rate of boosting in the preferred system is slower than the first rate of boosting. A detection circuit is coupled to the node on the integrated circuit which receives the on-chip voltage, and to the voltage boost circuit. The detection circuit signals the voltage boost circuit when the node reaches the first threshold, and signals the voltage boost circuit when the node reaches the second threshold. According to one aspect of the invention, the first threshold is reached within less than 5 nanoseconds, and more preferably about 2 nanoseconds, or less, of the transition in the boost signal.
    • 提供了适用于具有低电源电压(例如,2.7至3.6伏特)的闪存器件的集成电路的片上电压产生电路。 电压升压电路耦合到电源电压输入和升压信号,该升压信号响应于升压信号的转变而升高集成电路上的节点上的片内电压。 升压电路具有第一模式,其响应于转换而以第一升压速率提升片上电压直到第一阈值,并且响应于转换的第二模式将片上电压提升到第二阈值 升压速率直到第二个阈值。 优选系统中的第二次升压速度比第一次升压速率慢。 检测电路耦合到接收片上电压的集成电路上的节点和电压升压电路。 当节点达到第一阈值时,检测电路向升压电路发信号,当节点达到第二阈值时,信号通知升压电路。 根据本发明的一个方面,在升压信号中的转变的小于5纳秒,更优选约2纳秒或更小的范围内达到第一阈值。
    • 64. 发明授权
    • Memory apparatus
    • 存储设备
    • US08825978B2
    • 2014-09-02
    • US13584393
    • 2012-08-13
    • Yu-Meng ChaungChun-Hsiung HungKuen-Long ChangKen-Hui ChenNai-Ping Kuo
    • Yu-Meng ChaungChun-Hsiung HungKuen-Long ChangKen-Hui ChenNai-Ping Kuo
    • G06F12/00G06F13/42G11C29/00
    • G11C7/1072G11C7/1066G11C7/222G11C2207/104
    • A memory apparatus includes a host device and a slave device. The host device stores verification data. The slave device includes a memory unit, a control unit, and a logic unit. The control unit drives the memory unit to provide storage data in a data transmission sub-period, and further provides a control signal, indicating the first verification data, in a dummy sub-period. The logic unit provides first preamble data, indicating substantially a same data value as the verification data, in the dummy sub-period in response to the first control signal. The preamble data and the storage data are transmitted according to an internal clock signal. The host device samples the first preamble data according to an external clock signal, and determines whether the external and the internal clock signals are synchronized by comparing the first preamble data and the first verification data.
    • 存储装置包括主机装置和从装置。 主机设备存储验证数据。 从设备包括存储单元,控制单元和逻辑单元。 控制单元驱动存储单元以在数据传输子时段中提供存储数据,并且还在虚拟子周期中提供指示第一验证数据的控制信号。 逻辑单元响应于第一控制信号,在虚拟子周期中提供与验证数据基本上相同的数据值的第一前同步码数据。 前导码数据和存储数据根据内部时钟信号发送。 主机设备根据外部时钟信号对第一前同步码数据进行采样,并且通过比较第一前导码数据和第一验证数据来确定外部和内部时钟信号是否被同步。
    • 67. 发明申请
    • Method and Apparatus for Reducing Erase Time of Memory By Using Partial Pre-Programming
    • 通过部分预编程减少存储器擦除时间的方法和装置
    • US20130279265A1
    • 2013-10-24
    • US13453312
    • 2012-04-23
    • Chun-Yi LeeKuen-Long ChangChun-Hsiung Hung
    • Chun-Yi LeeKuen-Long ChangChun-Hsiung Hung
    • G11C16/04
    • G11C16/14G11C16/16G11C16/344
    • Memory cells of a nonvolatile memory array are characterized by one of multiple threshold voltage ranges including at least an erased threshold voltage range and a programmed threshold voltage range. Responsive to an erase command to erase a group of memory cells of the nonvolatile memory array, a plurality of phases are performed, including at least a pre-program phase and an erase phase. The pre-program phase programs a first set of memory cells in the group having threshold voltages within the erased threshold voltage range, and does not program a second set of memory cells in the group having threshold voltages within the erased threshold voltage range in the group. By not programming the second set of memory cells, the pre-program phase is performed more quickly than if the second set of memory cells were programmed along with the first set of memory cells.
    • 非易失性存储器阵列的存储单元的特征在于包括至少一个擦除的阈值电压范围和编程的阈值电压范围的多个阈值电压范围之一。 响应于擦除非易失性存储器阵列的一组存储单元的擦除命令,执行至少包括预编程相位和擦除阶段的多个相位。 预编程相位对组内的阈值电压中的第一组存储器单元进行编程,并且不对组中擦除的阈值电压范围内的阈值电压的组中的第二组存储器单元进行编程 。 通过不对第二组存储器单元进行编程,如果第二组存储器单元与第一组存储器单元一起被编程,那么执行预编程相位更快。