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    • 5. 发明授权
    • Destructive read type memory circuit, restoring circuit for the same and sense amplifier
    • 破坏性读取型存储电路,恢复电路为相同和感测放大器
    • US06333883B2
    • 2001-12-25
    • US09768465
    • 2001-01-25
    • Shigetoshi WakayamaKohtaroh GotohMiyoshi SaitoJunji Ogawa
    • Shigetoshi WakayamaKohtaroh GotohMiyoshi SaitoJunji Ogawa
    • G11C700
    • G11C7/065G11C7/06G11C11/4091
    • A restoring circuit 24, provided for each of the memory blocks 191 and 192, having registers and a selector for selecting one of the present row address and the output of the registers, provides the output of the selector to a word decoder 26. The present row address is held in one of the registers. When amplification is started by a sense amplifier 15, transfer gates 10 and 11 connected between the bit lines BL1 and *BL1 and the sense amplifier 15 are turned off to decrease the load of the sense amplifier 15, the amplified signal is stored in a buffer memory cell circuit 18, and accessing is completed with omitting restoring to the memory cell 12. While the memory cell block 191 is not selected, the data held in the buffer memory cell circuit 18 is stored into the memory cell row addressed by the content of the selected register. The sense amplifier 15 has PMOS and NMOS sense amplifiers. The PMOS sense amplifier, having a pair of cross-coupled PMOS transistors and a pair of transfer gates, the potential of the sources of the PMOS transistors being fixed at Vii, operates in a direct sensing mode when the transfer gates are off state, and then functions as a usual PMOS sense amplifier by turning on the transfer gates. Likewise for the NMOS sense amplifier.
    • 为每个存储器块191和192提供的恢复电路24具有寄存器和用于选择当前行地址和寄存器的输出之一的选择器,将选择器的输出提供给字解码器26.现在 行地址保存在其中一个寄存器中。 当由读出放大器15开始放大时,连接在位线BL1和* BL1与读出放大器15之间的传输门10和11被截止以减小读出放大器15的负载,放大的信号被存储在缓冲器 存储单元电路18,并且通过省略对存储单元12的恢复来完成访问。虽然没有选择存储单元块191,但是保持在缓冲存储单元电路18中的数据被存储到由 所选寄存器。 读出放大器15具有PMOS和NMOS读出放大器。 具有一对交叉耦合PMOS晶体管和一对传输栅极的PMOS读出放大器,PMOS晶体管的源极的电位固定在Vii处,当传输门断开时,其工作在直接感测模式,而 然后通过打开传输门来作为通常的PMOS读出放大器。 类似于NMOS读出放大器。