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    • 3. 发明授权
    • Semiconductor memory device operating in synchronization with a clock signal for high-speed data write and data read operations
    • 半导体存储器件与时钟信号同步工作,用于高速数据写入和数据读取操作
    • US06427197B1
    • 2002-07-30
    • US09394891
    • 1999-09-13
    • Yasuharu SatoTadao AikawaShinya FujiokaWaichiro FujiedaHitoshi IkedaHiroyuki Kobayashi
    • Yasuharu SatoTadao AikawaShinya FujiokaWaichiro FujiedaHitoshi IkedaHiroyuki Kobayashi
    • G11C800
    • G11C7/1072G11C7/1039
    • The present invention is a memory circuit for writing prescribed numbers of bits of write data, determined according to the burst length, in response to write command, comprising: a first stage for inputting, and then holding, row addresses and column addresses simultaneously with the write command; a second stage having a memory core connected to the first stage via a pipeline switch, wherein the row addresses and column addresses are decoded, and word line and sense amps are activated; a third stage for inputting the write data serially and sending the write data to the memory core in parallel; and a serial data detection circuit for generating write-pipeline control signal for making the pipeline switch conduct, after the prescribed number of bits of write data has been inputted. According to the present invention, in an FCRAM exhibiting a pipeline structure, the memory core in the second stage can be activated after safely fetching the write data in the burst length. When writing successively or reading successively, moreover, the command cycle can made short irrespective of the burst length.
    • 本发明是一种存储电路,用于响应于写命令,写入根据突发长度确定的指定数量的写入数据,包括:第一级,用于与第一级同时输入,然后保持行地址和列地址 写命令 第二级具有经由流水线开关连接到第一级的存储器核,其中行地址和列地址被解码,字线和检测放大器被激活; 用于串行输入写入数据并且将写入数据并行地发送到存储器核心的第三级; 以及串行数据检测电路,用于在输入了规定数量的写入数据之后,产生用于使流水线开关导通的写入流水线控制信号。 根据本发明,在呈现流水线结构的FCRAM中,可以在以突发长度安全地取出写入数据之后激活第二级中的存储器核心。 此外,当连续写入或连续读取时,无论突发长度如何,命令循环可以变短。