Dynamic RAM having word line voltage intermittently boosted in
synchronism with an external clock signal
    1.
    发明授权
    Dynamic RAM having word line voltage intermittently boosted in synchronism with an external clock signal 失效
    具有与外部时钟信号同步的字线电压的动态RAM间歇地升压

    公开(公告)号:US6115319A

    公开(公告)日:2000-09-05

    申请号:US23880

    申请日:1998-02-13

    摘要: A bootstrap circuit is provided for a word line selector for setting word lines connected with dynamic memory cells at a select level corresponding to a first voltage and a nonselect level corresponding to a second voltage. The bootstrap circuit generates a bootstrap voltage which is given a difference substantially equal to the threshold voltage of address select MOSFETs with respect to the high level of bit lines connected with the memory cells, and feeds the bootstrap voltage to the selected word lines. The bootstrap circuit is activated in synchronism with a clock signal at a timing corresponding to an action mode designated by a command in an SDRAM before a precharge action, thereby changing the select level of the word lines from the first voltage to the bootstrap voltage.

    摘要翻译: 提供了一种用于字线选择器的引导电路,用于将与动态存储单元相连的字线设置在对应于与第二电压对应的第一电压和非选择电平的选择电平。 引导电路产生自举电压,该自举电压相对于与存储器单元连接的高电平位线给予基本上等于地址选择MOSFET的阈值电压的差值,并将自举电压馈送到所选择的字线。 引导电路在与预充电动作之前的SDRAM中由命令指定的动作模式对应的定时与时钟信号同步地激活,从而将字线的选择电平从第一电压改变为自举电压。

    Semiconductor integrated circuit device
    6.
    发明授权
    Semiconductor integrated circuit device 有权
    半导体集成电路器件

    公开(公告)号:US06314044B1

    公开(公告)日:2001-11-06

    申请号:US09594840

    申请日:2000-06-15

    IPC分类号: G11C800

    CPC分类号: G11C8/12

    摘要: A RAM mounted so as to mix with logic circuits has a plurality of memory mats and one control circuit provided for the plurality of memory mats. Arithmetic circuits for respectively performing +1 or −1 arithmetic operation are respectively provided so as to correspond to the respective memory mats and are electrically connected in cascade form. An input terminal of the initial-stage arithmetic circuit is supplied with address-setting fixed address signals. Input signals supplied to the next and subsequent arithmetic circuits or signals outputted therefrom are defined as own-assigned address signals (those assigned to the corresponding memory mats). A comparator provided in association with each arithmetic circuit referred to above makes comparisons for coincidence between the address signals and address signals input upon memory access. The corresponding memory mat is selected based on the resultant coincidence signal.

    摘要翻译: 安装成与逻辑电路混合的RAM具有多个存储器垫和为多个存储器垫提供的一个控制电路。 分别提供用于分别执行+1或-1运算的算术电路,以对应于相应的存储器垫并且以级联形式电连接。 初始级算术电路的输入端被提供地址设定固定地址信号。 提供给下一个和后续运算电路的输入信号或从其输出的信号被定义为自己分配的地址信号(分配给相应的存储器垫的那些)。 与上述每个运算电路相关联地提供的比较器比较了存储器访问时输入的地址信号和地址信号之间的一致性。 基于所得到的一致信号来选择相应的存储器垫。