Content addressable memory
    17.
    发明授权
    Content addressable memory 有权
    内容可寻址内存

    公开(公告)号:US09087572B2

    公开(公告)日:2015-07-21

    申请号:US14091213

    申请日:2013-11-26

    Applicant: Rambus Inc.

    CPC classification number: G11C15/00 G11C13/0002 G11C15/046

    Abstract: A content addressable memory can include an array of memory cells having multiple memory elements, such as RRAM elements, to store data based on a plurality resistive states. A common switching device, such as a transistor, can electrically couple a plurality of the multiple memory elements with a matchline during read, write, erase, and search operations. In search operations, the memory cells can receive a search word and selectively discharge a voltage level on the matchline based on the data stored by the memory elements and the search word provided to the memory elements. The voltage level of the matchline can indicate whether the search word matched the data stored in the memory cells. The content addressable memory can potentially have an effective memory cell sizing under 0.5F2 depending on the number of layers of memory cells formed over the switching device.

    Abstract translation: 内容可寻址存储器可以包括具有多个存储器元件(诸如RRAM元件)的存储器单元阵列,以存储基于多个电阻状态的数据。 诸如晶体管的公共开关器件可以在读,写,擦除和搜索操作期间用匹配线电耦合多个多个存储器元件。 在搜索操作中,存储器单元可以接收搜索词,并且基于由存储元件存储的数据和提供给存储器元件的搜索词来选择性地排放匹配线上的电压电平。 匹配线的电压电平可以指示搜索词是否匹配存储在存储单元中的数据。 内容可寻址存储器可能潜在地具有根据在开关器件上形成的存储器单元的层数在0.5F2下的有效存储单元大小。

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