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    • 8. 发明申请
    • Semiconductor memory device
    • 半导体存储器件
    • US20070038919A1
    • 2007-02-15
    • US11495550
    • 2006-07-31
    • Tomonori SekiguchiRiichiro TakemuraSatoru AkiyamaSatoru HanzawaKazuhiko Kajigaya
    • Tomonori SekiguchiRiichiro TakemuraSatoru AkiyamaSatoru HanzawaKazuhiko Kajigaya
    • G11C29/00
    • G06F11/1044G11C2029/0409
    • A semiconductor memory device capable of achieving a sufficient operating margin without increasing an area penalty even in the case of miniaturization is provided. An error correction system composed of a data bit of 64 bits and a check bit of 9 bits is introduced to a memory array such as DRAM, and an error correction code circuit required therein is disposed near a sense amplifier array. In addition to normal memory arrays composed of such memory arrays, a redundant memory array having a sense amplifier array and an error correction code circuit adjacent thereto is provided in a chip. By this means, the error which occurs in the manufacture can be replaced. Also, the error correction code circuit corrects the error at the time of an activate command and stores the check bit at the time of a pre-charge command.
    • 提供了即使在小型化的情况下也能够实现足够的操作余量而不增加面积损失的半导体存储器件。 将由64位的数据位和9位的校验位构成的纠错系统引入到诸如DRAM的存储器阵列中,并且其中需要的纠错码电路设置在读出放大器阵列附近。 除了由这种存储器阵列组成的常规存储器阵列之外,在芯片中提供了具有读出放大器阵列和与其相邻的纠错码电路的冗余存储器阵列。 通过这种方式,可以更换制造过程中发生的错误。 此外,纠错码电路校正了激活命令时的错误,并且在预充电命令时存储检查位。