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    • 30. 发明公开
    • 드레인 전압 펌핑 회로
    • 泵送电压电路
    • KR1020000027295A
    • 2000-05-15
    • KR1019980045198
    • 1998-10-27
    • 에스케이하이닉스 주식회사
    • 이종석
    • G11C16/06
    • H02M3/073G11C5/145G11C16/30
    • PURPOSE: A circuit for pumping drain voltage is provided to decrease a current consumption when operating a program by detecting the number of bit when performing a program in a flash memory cell and adjusting a drain pumping voltage according to the number of a cell. CONSTITUTION: A drain voltage pumping unit(12) for programming memory cells of a memory cell array(11) has a ring oscillator(13) and a pumping unit(14). A detecting unit(15) detects the number of bit which is programmed and outputs a program control signal. A first control signal(S1) is generated when the number of bit is 16 bits. A second control signal(S2) is generated when the number of bit is 12 bits. A third control signal(S3) is generated when the number of bit is 8 bits. A fourth control signal(S4) is generated when the number of bit is 4 bits.
    • 目的:提供用于泵浦漏极电压的电路,以在通过在闪速存储器单元中执行程序时检测位数并且根据单元的数量调节漏极泵浦电压来操作程序时降低电流消耗。 构成:用于对存储单元阵列(11)的存储单元进行编程的漏极电压抽运单元(12)具有环形振荡器(13)和泵送单元(14)。 检测单元(15)检测被编程的位数,并输出程序控制信号。 当比特数为16比特时,产生第一控制信号(S1)。 当比特数为12比特时,产生第二控制信号(S2)。 当比特数为8比特时,产生第三控制信号(S3)。 当比特数为4比特时,产生第四控制信号(S4)。