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    • 10. 发明授权
    • Non-volatile semiconductor storage device
    • 非易失性半导体存储装置
    • US08279670B2
    • 2012-10-02
    • US12882507
    • 2010-09-15
    • Takuya FutatsuyamaYoshihisa KondoNoboru Shibata
    • Takuya FutatsuyamaYoshihisa KondoNoboru Shibata
    • G11C16/04
    • G11C16/10G11C8/00G11C11/5621G11C16/0483G11C2211/5641
    • A non-volatile semiconductor storage device according to an embodiment includes: a memory cell array including an array of electrically rewritable memory cells and configured to be able to store N bits of data (where N is a natural number not less than 2) in one memory cell; and a controller operative to control read, write and erase operations of the memory cell array. The memory cell array includes a first region having a first memory cell operative to retain N bits of data, and a second region having a second memory cell operative to retain M bits of data (where M is a natural number less than N). A data structure of address data received by the controller when accessing the first memory cell is the same as a data structure of address data received from the outside when accessing the second memory cell.
    • 根据实施例的非易失性半导体存储装置包括:包括电可重写存储器单元阵列的存储单元阵列,并且被配置为能够将N位数据(其中N是不小于2的自然数)存储在一个 记忆体; 以及控制器,用于控制存储单元阵列的读,写和擦除操作。 存储单元阵列包括具有第一存储器单元的第一区域,该第一存储器单元可操作以保留N位数据,以及具有第二存储单元的第二区域,该第二存储单元可操作以保持M位数据(其中M是小于N的自然数)。 当访问第一存储器单元时,由控制器接收的地址数据的数据结构与在访问第二存储单元时从外部接收的地址数据的数据结构相同。