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    • 1. 发明授权
    • Semiconductor storage device with automatic write/erase function
    • 具有自动写入/擦除功能的半导体存储设备
    • US06222779B1
    • 2001-04-24
    • US09460644
    • 1999-12-15
    • Hidetoshi SaitoHideo KatoNaoto TomitaTokumasa Hara
    • Hidetoshi SaitoHideo KatoNaoto TomitaTokumasa Hara
    • G11C700
    • G11C16/16G11C16/12
    • A semiconductor storage device, which has an automatic write/erase function, and uses a potential obtained by boosting a power supply voltage upon write/erase, has a write division control circuit which shifts the selection timings of bit lines upon write, so as to decrease the number of bits to be written simultaneously, thereby reducing the consumption current and compensating for insufficient current supply performance of a power supply circuit in case the power supply voltage is low, and refers to the contents of erase flags upon pre-programming in erase, and erase only blocks that require erases, while, when the power supply voltage is high as the power supply voltage has a wide range or the write time is short as in an acceleration test, the number of bits to be selected at the same time is increased to prevent an increase in write/erase time.
    • 具有自动写入/擦除功能并且使用通过在写入/擦除时提高电源电压而获得的电位的半导体存储装置具有写入分配控制电路,其在写入时移位位线的选择定时,以便 减少要同时写入的位数,从而降低消耗电流并补偿在电源电压低的情况下电源电路的电流供应不足,并且在擦除预编程时参考擦除标志的内容 ,并且仅擦除需要擦除的块,而当电源电压为高电平时,电源电压具有较大的范围或写入时间短于加速度测试时,同时选择的位数 增加以防止写入/擦除时间的增加。
    • 7. 发明授权
    • Semiconductor memory device
    • 半导体存储器件
    • US06906960B2
    • 2005-06-14
    • US10383633
    • 2003-03-10
    • Hidetoshi SaitoHideo KatoTokumasa Hara
    • Hidetoshi SaitoHideo KatoTokumasa Hara
    • G11C16/02G11C8/12G11C16/08G11C16/04
    • G11C8/12G11C16/08G11C2216/22
    • A semiconductor memory device includes: a plurality of banks with electrically rewritable memory cells arranged therein, the banks being configured to be simultaneously accessible in such a manner that a data write operation into a bank and a data read operation for another bank are simultaneously performed; a write-use data bus commonly disposed for the plurality of banks; a read-use data bus commonly disposed for the plurality of banks; a write circuit connected to the write-use data bus; a read circuit connected to the read-use data bus; a bank address decoder circuit for decoding external bank address signals for bank selecting to output internal bank address signals, the bank address decoder circuit having such an address conversion function that one of plural kinds of address conversions between the external bank address signals and the internal bank address signals is selectable; and a rewrite control circuit for sequence controlling a data write operation for a bank selected by the bank address decoder circuit.
    • 一种半导体存储器件包括:具有布置在其中的电可重写存储器单元的多个存储体,所述存储体被配置为可同时访问,以使得对于存储体的数据写操作和对于另一存储体的数据读操作同时进行; 通常为多个银行设置的写用数据总线; 通常为多个银行设置的读取用数据总线; 连接到写入用数据总线的写入电路; 连接到读取用数据总线的读取电路; 用于解码用于存储体选择的外部存储体地址信号以输出内部存储体地址信号的存储体地址解码器电路,该存储体地址译码器电路具有这样一种地址转换功能:外部存储体地址信号与内部存储体之间的多种地址转换之一 地址信号可选; 以及重写控制电路,用于对由银行地址解码器电路选择的存储体进行数据写入操作的顺序控制。