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    • 2. 发明授权
    • Semiconductor memory device
    • 半导体存储器件
    • US07656733B2
    • 2010-02-02
    • US12059220
    • 2008-03-31
    • Masao ShinozakiHajime Sato
    • Masao ShinozakiHajime Sato
    • G11C7/02
    • G11C7/22G11C7/227G11C11/412G11C11/419G11C2207/229
    • This invention provides a semiconductor memory device with enhanced speed performance or enabling timing adjustment reflected in characteristic variation of memory cells, adapted to suppress an increase in the number of circuit elements. A write dummy bit section comprises a first dummy line and a second dummy line corresponding to complementary bit lines and a plurality of first dummy cells formed to be similar in shape to static memory cells, wherein a write current path is coupled between the first dummy line and the second dummy line. In the write dummy bit section, one voltage level is input to the first dummy line through driver MOSFETs in relation to write signal inputs to the static memory cells and a signal change in the second dummy line precharged at the other voltage level is sensed and output. A timing control circuit deselects a word line selected by an output signal from the write dummy bit section.
    • 本发明提供了一种半导体存储器件,其具有增强的速度性能或能够反映在存储器单元的特性变化中的时序调整,适于抑制电路元件数量的增加。 写入虚拟位部分包括对应于互补位线的第一虚拟线和第二虚拟线以及形状与静态存储单元类似的多个第一虚拟单元,其中写入电流路径耦合在第一虚拟线 和第二虚线。 在写入虚拟位部分中,相对于静态存储器单元的写信号输入,通过驱动器MOSFET将一个电压电平输入到第一虚拟线,并且在另一电压电平处预充电的第二虚拟线中的信号变化被感测和输出 。 定时控制电路取消由写入虚拟位部分的输出信号选择的字线。
    • 4. 发明授权
    • Semiconductor storage device
    • 半导体存储设备
    • US08351283B2
    • 2013-01-08
    • US12814478
    • 2010-06-13
    • Masao ShinozakiHajime Sato
    • Masao ShinozakiHajime Sato
    • G11C7/22
    • G11C7/22G11C7/222G11C2207/2272
    • The present invention is directed to realize high-speed operation and low latency of a semiconductor storage device employing the QDR method. A memory cell array, a first buffer, a second buffer, a first circuit, a second circuit, a first DLL circuit, and a second DLL circuit are provided. The first DLL circuit generates a first internal clock signal so as to reduce a phase difference between a first clock signal fetched via the first buffer and the first internal clock signal transmitted to the first circuit. The second DLL circuit generates the second internal clock signal so as to reduce a phase difference between the second clock signal fetched via the second buffer and the second internal clock signal transmitted to the second circuit. With the configuration, input setup and hold time can be shortened, and the frequency of the clock signal can be further increased.
    • 本发明旨在实现采用QDR方法的半导体存储装置的高速操作和低延迟。 提供存储单元阵列,第一缓冲器,第二缓冲器,第一电路,第二电路,第一DLL电路和第二DLL电路。 第一DLL电路产生第一内部时钟信号,以便减少经由第一缓冲器取得的第一时钟信号和发送到第一电路的第一内部时钟信号之间的相位差。 第二DLL电路产生第二内部时钟信号,以便减小经由第二缓冲器取得的第二时钟信号和发送到第二电路的第二内部时钟信号之间的相位差。 通过该配置,可以缩短输入建立和保持时间,并且可以进一步增加时钟信号的频率。
    • 5. 发明申请
    • SEMICONDUCTOR STORAGE DEVICE
    • 半导体存储设备
    • US20100322022A1
    • 2010-12-23
    • US12814478
    • 2010-06-13
    • Masao ShinozakiHajime Sato
    • Masao ShinozakiHajime Sato
    • G11C8/18G11C7/00
    • G11C7/22G11C7/222G11C2207/2272
    • The present invention is directed to realize high-speed operation and low latency of a semiconductor storage device employing the QDR method. A memory cell array, a first buffer, a second buffer, a first circuit, a second circuit, a first DLL circuit, and a second DLL circuit are provided. The first DLL circuit generates a first internal clock signal so as to reduce a phase difference between a first clock signal fetched via the first buffer and the first internal clock signal transmitted to the first circuit. The second DLL circuit generates the second internal clock signal so as to reduce a phase difference between the second clock signal fetched via the second buffer and the second internal clock signal transmitted to the second circuit. With the configuration, input setup and hold time can be shortened, and the frequency of the clock signal can be further increased.
    • 本发明旨在实现采用QDR方法的半导体存储装置的高速操作和低延迟。 提供存储单元阵列,第一缓冲器,第二缓冲器,第一电路,第二电路,第一DLL电路和第二DLL电路。 第一DLL电路产生第一内部时钟信号,以便减少经由第一缓冲器取得的第一时钟信号和发送到第一电路的第一内部时钟信号之间的相位差。 第二DLL电路产生第二内部时钟信号,以便减小经由第二缓冲器取得的第二时钟信号和发送到第二电路的第二内部时钟信号之间的相位差。 通过该配置,可以缩短输入建立和保持时间,并且可以进一步增加时钟信号的频率。