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    • 4. 发明公开
    • 반도체 메모리장치의 결함 셀 스크린회로 및 그 방법
    • 半导体存储器件的缺陷电池屏幕电路及其相关方法
    • KR1020040038450A
    • 2004-05-08
    • KR1020020067406
    • 2002-11-01
    • 삼성전자주식회사
    • 배용준한공흠김상균하영남손진국
    • G11C29/00
    • PURPOSE: A defect cell screen circuit of a semiconductor memory device and a method for the same are provided to effectively detect the defect cell since the screen is performed by reducing the pulse width margin of the word line selection signal of a conventional write mode during the defect cell screen mode. CONSTITUTION: A defect cell screen circuit of a semiconductor memory device includes a mode selection circuit(100), a data transition detector(DTD), DTD Summator Pulse signal(PPD) generation circuit(200). The mode selection circuit(100) outputs a pair of mode selection signals being opposite to each other by receiving the option signal through the option pads. The PPD pulse generation circuit(200) controls the width of the word line selection signal by the mode selection signal outputted from the mode selection circuit(100) by receiving the DTD signal.
    • 目的:提供半导体存储器件的缺陷单元屏幕电路及其方法,以有效地检测缺陷单元,因为屏幕是通过减少常规写入模式的字线选择信号的脉冲宽度裕度来执行的 缺陷单元格屏幕模式。 构成:半导体存储器件的缺陷单元屏幕电路包括模式选择电路(100),数据转换检测器(DTD),DTD累加器脉冲信号(PPD)产生电路(200)。 模式选择电路(100)通过通过选项焊盘接收选项信号而输出彼此相反的一对模式选择信号。 PPD脉冲发生电路(200)通过接收DTD信号,通过从模式选择电路(100)输出的模式选择信号来控制字线选择信号的宽度。