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    • 2. 发明授权
    • Random access memory having burst mode capability and method for
operating the same
    • US06031785A
    • 2000-02-29
    • US39782
    • 1998-03-16
    • Hee-Choul ParkEun-Cheol Kim
    • Hee-Choul ParkEun-Cheol Kim
    • G11C11/413G11C7/10G11C11/401G11C11/407G11C11/409G11C8/00
    • G11C7/1018
    • A burst SRAM device is provided having a burst column selection circuit which is activated in accordance with a burst address, in addition to a column selection circuit for selecting columns of a memory cell array capable of storing a binary data. An internal column address portion of an external column address is applied to the column selection circuit as a first burst address signal. The column selection circuit selects at the same time at least two columns in response to the first burst address signal. During a burst read mode, at least two columns are simultaneously selected in response to the first burst address signal, and data stored in the selected cells are simultaneously sensed and amplified by at least two sense amplifiers corresponding to the selected memory cells. The data amplified thus are stored in a data output register. The burst addresses are applied to the burst column selection circuit. The burst column selection circuit allows the data stored in the data output register to be sequentially delivered to input/output data line pair in response to the burst addresses. As a result, an interval between a generation time of the first burst address and the time, which takes for a sensing operation of the last 1-bit data to be completed by the last burst address, can be considerably shortened as compared with the conventional device. During a burst write mode, at least two columns are simultaneously selected by the first burst address, and 1-bit data from the input/output data line pair corresponding to locations of the first burst address of the data input register are stored. The burst column selection circuit allows the data delivered sequentially from the data line pair to be sequentially stored in regions of the other burst addresses of the data input register in response to the other burst addresses. At least 2-bit data stored in the data input register are sequentially or simultaneously written in the selected memory cells of the selected columns.
    • 3. 发明授权
    • Internal clock generation circuit for synchronous semiconductor device
    • 用于同步半导体器件的内部时钟发生电路
    • US5991229A
    • 1999-11-23
    • US4000
    • 1998-01-08
    • Eun-cheol KimHee-choul Park
    • Eun-cheol KimHee-choul Park
    • G11C11/413G06F1/04G11C7/22G11C8/18G11C11/407G11C11/409G11C11/417G11C8/00
    • G11C7/22G11C8/18
    • A synchronous semiconductor device being operated in synchronism with an external clock signal includes an internal clock controller and an internal clock generator. The internal clock controller is responsive to an externally applied signal indicative of a beginning of an operation and generates an internal control signal in synchronism with the external clock signal. The internal control signal is only activated for a predetermined time interval long enough to carry out the operation. The internal clock generator serves to generate an internal clock signal synchronized with the external clock signal while the internal control signal is activated. An internal buffer circuit is operated in synchronism with the internal clock signal. Accordingly, power consumption can be reduced while in a standby mode.
    • 与外部时钟信号同步操作的同步半导体器件包括内部时钟控制器和内部时钟发生器。 内部时钟控制器响应于表示操作开始的外部施加的信号,并且与外部时钟信号同步地产生内部控制信号。 内部控制信号仅被激活一段足够长的预定时间间隔以执行该操作。 内部时钟发生器用于在内部控制信号被激活时产生与外部时钟信号同步的内部时钟信号。 内部缓冲电路与内部时钟信号同步工作。 因此,在待机模式下能够降低功耗。
    • 6. 发明授权
    • Method for programming a flash memory device
    • Flash存储设备编程方法
    • US06335881B2
    • 2002-01-01
    • US09781932
    • 2001-02-12
    • Jong-Hwa KimEun-Cheol Kim
    • Jong-Hwa KimEun-Cheol Kim
    • G11C1604
    • G11C16/34G11C16/12
    • The method for programming a flash memory device includes sequentially loading program data in the page buffer circuit responsive to a first command signal, the first command signal indicating program data input and generating a program voltage responsive to a second command signal, the second command signal indicating programming initiation. EEPROM cells are programmed after the program voltage reaches a predetermined target. All of the programmed EEPROM cells are verified to ensure that they are properly programmed. If the EEPROM cells are not properly programmed, programming is repeated until all of the EEPROM cells are properly programmed. The program voltage is increased in a stepwise manner every time programming is repeated.
    • 用于对闪速存储器件进行编程的方法包括响应于第一命令信号顺序地将程序数据加载到页缓冲器电路中,第一命令信号指示程序数据输入并响应于第二命令信号产生编程电压,第二命令信号指示 编程启动。 在程序电压达到预定目标之后,对EEPROM单元进行编程。 验证所有编程的EEPROM单元,以确保它们被正确编程。 如果EEPROM单元未正确编程,则重复编程,直到所有EEPROM单元都被正确编程。 每当重复编程时,逐步地增加编程电压。
    • 7. 发明授权
    • Multi-state non-volatile semiconductor memory device
    • 多状态非易失性半导体存储器件
    • US06483744B2
    • 2002-11-19
    • US09887904
    • 2001-06-21
    • Eun-Cheol KimYeong-Taek Lee
    • Eun-Cheol KimYeong-Taek Lee
    • G11C1604
    • G11C16/0483G11C11/5621G11C11/5642G11C16/24
    • A non-volatile semiconductor memory device including a memory cell array having a plurality of memory cells coupled to a plurality of bitlines and wordlines, each memory cell being programmed to one of plurality of data storage states. A node is connected to a selected bitline responsive to a storage state in a selected memory cell. A plurality of latched registers is connected to the node to store and output data bits corresponding the storage state, the data bits being assigned to the selected bitline. A circuit is adapted to precharge the selected bitline before sensing the selected memory cell and is adapted to equalize the selected bitline and the node after sensing the selected memory cell.
    • 一种非易失性半导体存储器件,包括具有耦合到多个位线和字线的多个存储器单元的存储单元阵列,每个存储器单元被编程为多个数据存储状态之一。 响应于所选存储器单元中的存储状态,节点连接到选定的位线。 多个锁存寄存器连接到节点以存储和输出与存储状态相对应的数据位,数据位被分配给所选择的位线。 电路适于在感测所选择的存储器单元之前对所选位线进行预充电,并且适于在感测所选择的存储器单元之后均衡所选择的位线和节点。
    • 9. 发明授权
    • Clock monitor circuit and synchronous semiconductor memory device utilizing the circuit
    • 时钟监视电路和利用该电路的同步半导体存储器件
    • US06307412B1
    • 2001-10-23
    • US09323590
    • 1999-06-01
    • Eun-Cheol KimKook-Hwan Kwon
    • Eun-Cheol KimKook-Hwan Kwon
    • H03K501
    • G11C7/225G11C7/22G11C7/222G11C2207/2227H03K5/13H03K5/15H03K5/19
    • A clock monitor circuit includes a first and second delay and clock signal generating unit for receiving a clock signal and an inverted clock signal, respectively. The first and second delay and clock signal generating units generate a first and second signals, respectively. A logic sum unit logically-sums the first and second signals to generate a stop clock signal. The clock monitor circuit according to the present invention can monitor the presence of a clock signal irrespective of an operation cycle of the clock signal. Further, the synchronous semiconductor memory device utilizing the clock monitor circuit according to the present invention is adapted to consume electric current only when a clock signal is present. That is, the device does not consume electric current when the clock signal is not present thereby reducing unnecessary waste of electric power in the stand-by mode.
    • 时钟监视电路包括分别接收时钟信号和反相时钟信号的第一和第二延迟和时钟信号产生单元。 第一和第二延迟和时钟信号产生单元分别产生第一和第二信号。 逻辑和单元对第一和第二信号进行逻辑加和,以产生停止时钟信号。 根据本发明的时钟监控电路可以监视时钟信号的存在,而与时钟信号的操作周期无关。 此外,利用根据本发明的时钟监视电路的同步半导体存储器件仅在存在时钟信号时才消耗电流。 也就是说,当不存在时钟信号时,该装置不消耗电流,从而在待机模式下减少不必要的电力浪费。