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    • 6. 发明授权
    • Semiconductor memory device capable of detecting repair address at high speed
    • 能够高速检测修复地址的半导体存储器件
    • US07106640B2
    • 2006-09-12
    • US11024902
    • 2004-12-30
    • Seok-Cheol YoonJae-Jin Lee
    • Seok-Cheol YoonJae-Jin Lee
    • G11C7/00
    • G11C29/027G11C29/24G11C29/781G11C2029/4402
    • There is provided a semiconductor memory device capable of detecting a repaired address in a test mode. The semiconductor memory device includes: a plurality of unit address detectors for comparing 1-bit address signal with a stored 1-bit repair address signal to output a repair signal, and for buffering the stored repair address signal and outputting the buffered repair address signal as the repair signal in a test mode; a redundancy address detector for combining the plurality of repair signals from the unit address detectors and outputting a detection signal for detecting whether a current input address is a redundancy address; and a redundancy flag signal generator for generating a redundancy flag signal in response to the detection signal and transferring the redundancy flag signal to a data output path.
    • 提供了能够在测试模式下检测修复的地址的半导体存储器件。 半导体存储器件包括:多个单元地址检测器,用于将1位地址信号与存储的1位修复地址信号进行比较,以输出修复信号,并用于缓存存储的修复地址信号,并将缓冲的修复地址信号作为 修复信号处于测试模式; 冗余地址检测器,用于组合来自单元地址检测器的多个修复信号,并输出用于检测当前输入地址是否为冗余地址的检测信号; 以及冗余标志信号发生器,用于响应于检测信号产生冗余标志信号,并将冗余标志信号传送到数据输出路径。