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    • 7. 发明授权
    • Semiconductor device and operating method thereof
    • 半导体器件及其操作方法
    • US07868674B2
    • 2011-01-11
    • US12761734
    • 2010-04-16
    • Young-Hoon Oh
    • Young-Hoon Oh
    • H03L7/06
    • H03L7/087H03L7/0812H03L7/093
    • A delay locked loop (DLL) of a semiconductor device has a relatively small area and low current consumption while having a function of correcting a duty ratio. The semiconductor device includes a split unit configured to receive and split a reference clock to output a first clock corresponding to a first edge of the reference clock and a second clock corresponding to a second edge, a voltage generation unit configured to generate a first voltage corresponding to a duty ratio of the first clock and a second voltage corresponding to a duty ratio of the second clock, a voltage comparison unit configured to compare levels of the first and second voltages with each other, and a clock delay unit configured to receive one of the first and second clocks to delay the received clock of which delay amount is determined in response to an output signal of the voltage comparison unit.
    • 半导体器件的延迟锁定环(DLL)具有相对小的面积和低的电流消耗,同时具有校正占空比的功能。 所述半导体器件包括分配单元,其被配置为接收和分离参考时钟以输出对应于所述参考时钟的第一边缘的第一时钟和对应于第二边缘的第二时钟;电压生成单元,被配置为产生对应于 对应于第一时钟的占空比和对应于第二时钟的占空比的第二电压,电压比较单元,被配置为将第一和第二电压的电平彼此进行比较;以及时钟延迟单元,被配置为接收 用于响应于电压比较单元的输出信号来确定延迟量的接收时钟的第一和第二时钟。