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    • 4. 发明授权
    • Memory device with source-side sensing
    • 具有源侧感测的存储器件
    • US08760930B1
    • 2014-06-24
    • US13769398
    • 2013-02-18
    • (Spansion Inc.) Spansion LLC.
    • Alexander KushnarenkoYoram Betser
    • G11C16/06
    • G11C16/26G11C16/0491G11C16/24
    • A source-sensing configuration for non-volatile memory devices to simultaneously read 2 bits in two different memory cells sharing a same word line is disclosed. In a first cell arrangement, a drain of a first read cell is biased and its source and that of two adjacent cells in a direction towards the second read cell are connected through source bit lines to a source sense amplifier. In a second cell arrangement, the drain of the second read cell is biased and its source and that of its two adjacent cells in a direction towards the first read cell are connected through source bit lines to a source sense amplifier. A memory cell acts as a cell pipe and joins together the first and second cell arrangements. Driving all six source bit lines simultaneously allows the 2 bits to be simultaneously read while maintaining currents due to pipe effect substantially minimized.
    • 公开了一种用于非易失性存储器件同时读取共享相同字线的两个不同存储单元中的2位的源感测配置。 在第一单元布置中,第一读单元的漏极被偏置,并且其源极和朝向第二读单元的方向的两个相邻单元的源极通过源位线连接到源读出放大器。 在第二单元布置中,第二读单元的漏极被偏置,并且其源向与其第二读单元的方向相反的两个相邻单元的源极通过源位线连接到源读出放大器。 存储器单元用作单元管,并将第一和第二单元布置连接在一起。 同时驱动所有六个源位线允许同时读取2位,同时由于管道效应基本上最小化而保持电流。