TERNARY CONTENT ADDRESSABLE MEMORY USING PHASE CHANGE DEVICES
    1.
    发明申请
    TERNARY CONTENT ADDRESSABLE MEMORY USING PHASE CHANGE DEVICES 审中-公开
    使用相位变更设备的内容可寻址存储器

    公开(公告)号:US20120120701A1

    公开(公告)日:2012-05-17

    申请号:US13350823

    申请日:2012-01-16

    IPC分类号: G11C15/00

    CPC分类号: G11C15/046 G11C13/0004

    摘要: A content addressable memory device with a plurality of memory cells storing ternary data values of high, low, and don't care. An aspect of the content addressable memory device is the use of first memory elements and second memory elements in the memory cells. The first and second memory elements are electrically coupled in parallel circuit to a match-line. The first memory elements are coupled to first word-lines and the second memory elements are coupled to second word-lines. The first memory elements are configured to store low resistance states if the ternary data value is low and high resistance states if the ternary data value is either high or don't care. The second memory elements are configured to store the low resistance states if the ternary data value is high and the high resistance states if the ternary data value is either low or don't care.

    摘要翻译: 一种具有多个存储单元的内容可寻址存储器件,其存储高,低和不关心的三进制数据值。 内容可寻址存储器件的一个方面是在存储器单元中使用第一存储器元件和第二存储器元件。 第一和第二存储器元件以并联电路电耦合到匹配线。 第一存储器元件耦合到第一字线,并且第二存储器元件耦合到第二字线。 如果三进制数据值低,则第一存储器元件被配置为存储低电阻状态,并且如果三进制数据值高或不在乎,则高电阻状态。 如果三进制数据值高,则第二存储器元件被配置为存储低电阻状态,并且如果三进制数据值为低或不关心,则存在高电阻状态。

    Content addressable memory using phase change devices
    2.
    发明授权
    Content addressable memory using phase change devices 有权
    内容可寻址内存使用相变设备

    公开(公告)号:US07751217B2

    公开(公告)日:2010-07-06

    申请号:US12166311

    申请日:2008-07-01

    IPC分类号: G11C15/00

    CPC分类号: G11C13/0004 G11C15/046

    摘要: Content addressable memory device utilizing phase change devices. An aspect of the content addressable memory device is the use of a comparatively lower power search-line access element and a comparatively higher power word-line access element. The word-line access element is only utilized during write operations and the search-line access element is only utilized during search operations. The word-line access element being electrically coupled to a second end of a phase change memory element and a word-line. The search-line access element also being electrically coupled to the second end of the phase change memory element and a search-line. The search-line being electrically coupled to a match-line. A bit-line is electrically coupled to a first end of the phase change memory element. Additionally, a complementary set of access elements, a complementary phase change memory element, a complementary search-line, and a complementary bit-line are also included in the content addressable memory device.

    摘要翻译: 使用相变装置的内容寻址存储装置。 内容可寻址存储器件的一个方面是使用相对较低功率的搜索线访问元件和相对较高功率的字线访问元件。 字线访问元件仅在写入操作期间使用,并且搜索线访问元件仅在搜索操作期间被使用。 字线访问元件电耦合到相变存储器元件的第二端和字线。 搜索线访问元件还电耦合到相变存储元件的第二端和搜索线。 搜索线电耦合到匹配线。 位线电耦合到相变存储元件的第一端。 此外,内容可寻址存储器件中还包括互补的一组存取元件,互补相变存储器元件,互补搜索线和互补位线。

    CONTENT ADDRESSABLE MEMORY USING PHASE CHANGE DEVICES
    3.
    发明申请
    CONTENT ADDRESSABLE MEMORY USING PHASE CHANGE DEVICES 有权
    使用相位变更设备的内容可寻址存储器

    公开(公告)号:US20100002481A1

    公开(公告)日:2010-01-07

    申请号:US12166311

    申请日:2008-07-01

    IPC分类号: G11C15/00 G11C11/00

    CPC分类号: G11C13/0004 G11C15/046

    摘要: Content addressable memory device utilizing phase change devices. An aspect of the content addressable memory device is the use of a comparatively lower power search-line access element and a comparatively higher power word-line access element. The word-line access element is only utilized during write operations and the search-line access element is only utilized during search operations. The word-line access element being electrically coupled to a second end of a phase change memory element and a word-line. The search-line access element also being electrically coupled to the second end of the phase change memory element and a search-line. The search-line being electrically coupled to a match-line. A bit-line is electrically coupled to a first end of the phase change memory element. Additionally, a complementary set of access elements, a complementary phase change memory element, a complementary search-line, and a complementary bit-line are also included in the content addressable memory device.

    摘要翻译: 使用相变装置的内容寻址存储装置。 内容可寻址存储器件的一个方面是使用相对较低功率的搜索线访问元件和相对较高功率的字线访问元件。 字线访问元件仅在写入操作期间使用,并且搜索线访问元件仅在搜索操作期间被使用。 字线访问元件电耦合到相变存储器元件的第二端和字线。 搜索线访问元件还电耦合到相变存储元件的第二端和搜索线。 搜索线电耦合到匹配线。 位线电耦合到相变存储元件的第一端。 此外,内容可寻址存储器件中还包括互补的一组存取元件,互补相变存储器元件,互补搜索线和互补位线。

    Ternary content addressable memory using phase change devices
    4.
    发明授权
    Ternary content addressable memory using phase change devices 有权
    使用相变装置的三元内容可寻址存储器

    公开(公告)号:US08120937B2

    公开(公告)日:2012-02-21

    申请号:US12399346

    申请日:2009-03-06

    IPC分类号: G11C10/00 G11C11/00 G11C11/56

    CPC分类号: G11C15/046 G11C13/0004

    摘要: A content addressable memory device with a plurality of memory cells storing ternary data values of high, low, and don't care. An aspect of the content addressable memory device is the use of first memory elements and second memory elements in the memory cells. The first and second memory elements are electrically coupled in parallel circuit to a match-line. The first memory elements are coupled to first word-lines and the second memory elements are coupled to second word-lines. The first memory elements are configured to store low resistance states if the ternary data value is low and high resistance states if the ternary data value is either high or don't care. The second memory elements are configured to store the low resistance states if the ternary data value is high and the high resistance states if the ternary data value is either low or don't care.

    摘要翻译: 一种具有多个存储单元的内容可寻址存储器件,其存储高,低和不关心的三进制数据值。 内容可寻址存储器件的一个方面是在存储器单元中使用第一存储器元件和第二存储器元件。 第一和第二存储器元件以并联电路电耦合到匹配线。 第一存储器元件耦合到第一字线,并且第二存储器元件耦合到第二字线。 如果三进制数据值低,则第一存储器元件被配置为存储低电阻状态,并且如果三进制数据值高或不在乎,则高电阻状态。 如果三进制数据值高,则第二存储器元件被配置为存储低电阻状态,并且如果三进制数据值为低或不关心,则存在高电阻状态。

    TERNARY CONTENT ADDRESSABLE MEMORY USING PHASE CHANGE DEVICES
    5.
    发明申请
    TERNARY CONTENT ADDRESSABLE MEMORY USING PHASE CHANGE DEVICES 有权
    使用相位变更设备的内容可寻址存储器

    公开(公告)号:US20100226161A1

    公开(公告)日:2010-09-09

    申请号:US12399346

    申请日:2009-03-06

    IPC分类号: G11C15/00 G11C11/00 G11C11/56

    CPC分类号: G11C15/046 G11C13/0004

    摘要: A content addressable memory device with a plurality of memory cells storing ternary data values of high, low, and don't care. An aspect of the content addressable memory device is the use of first memory elements and second memory elements in the memory cells. The first and second memory elements are electrically coupled in parallel circuit to a match-line. The first memory elements are coupled to first word-lines and the second memory elements are coupled to second word-lines. The first memory elements are configured to store low resistance states if the ternary data value is low and high resistance states if the ternary data value is either high or don't care. The second memory elements are configured to store the low resistance states if the ternary data value is high and the high resistance states if the ternary data value is either low or don't care.

    摘要翻译: 一种具有多个存储单元的内容可寻址存储器件,其存储高,低和不关心的三进制数据值。 内容可寻址存储器件的一个方面是在存储器单元中使用第一存储器元件和第二存储器元件。 第一和第二存储器元件以并联电路电耦合到匹配线。 第一存储器元件耦合到第一字线,并且第二存储器元件耦合到第二字线。 如果三进制数据值低,则第一存储器元件被配置为存储低电阻状态,并且如果三进制数据值高或不在乎,则高电阻状态。 如果三进制数据值高,则第二存储器元件被配置为存储低电阻状态,并且如果三进制数据值为低或不关心,则存在高电阻状态。

    Phase change memory with finite annular conductive path
    6.
    发明授权
    Phase change memory with finite annular conductive path 有权
    具有有限环形导电路径的相变存储器

    公开(公告)号:US07965537B2

    公开(公告)日:2011-06-21

    申请号:US12491816

    申请日:2009-06-25

    IPC分类号: G11C11/00

    摘要: A phase change memory device and a method for programming the same. The method includes determining a maximum possible resistance for the memory cells in the phase change memory device. The method includes determining a high resistance state for the memory cells in the phase change memory device. The method includes receiving a request to program a target memory cell in the phase change memory device to the high resistance state. The method also includes resetting the target memory cell in the phase change memory device to the high resistance state such that the high resistance state of the target memory cell is of less resistance than the maximum possible resistance. In one embodiment of the invention, the high resistance state for the memory cells in the phase change memory device is at least 10% less than the maximum possible resistance.

    摘要翻译: 相变存储器件及其编程方法。 该方法包括确定相变存储器件中的存储器单元的最大可能电阻。 该方法包括确定相变存储器件中存储单元的高电阻状态。 该方法包括接收将相变存储器件中的目标存储单元编程为高电阻状态的请求。 该方法还包括将相变存储器件中的目标存储单元重置为高电阻状态,使得目标存储单元的高电阻状态的阻抗比最大可能的电阻小。 在本发明的一个实施例中,相变存储器件中的存储单元的高电阻状态比最大可能电阻小至少10%。

    High density ternary content addressable memory
    8.
    发明授权
    High density ternary content addressable memory 有权
    高密度三元内容可寻址内存

    公开(公告)号:US07872889B2

    公开(公告)日:2011-01-18

    申请号:US12427484

    申请日:2009-04-21

    IPC分类号: G11C15/00

    摘要: A content addressable memory device with a plurality of memory cells storing data words. Each data bit in the data words is set to one of three values of a first binary value, a second binary value, and a don't care value. An aspect of the content addressable memory device is the use of a single memory element and an access device in the memory cells. The memory cells are arranged such that each memory cell is electrically coupled to a single bit line, a single match line, and a single word line. The memory elements in the memory cells store low resistance states if the data bit value is the first binary value, high resistance states if the data bit value is the second binary value, and very high resistance states if the data bit value is the don't care value.

    摘要翻译: 一种具有存储数据字的多个存储器单元的内容可寻址存储器件。 数据字中的每个数据位被设置为第一二进制值,第二二进制值和不关心值的三个值之一。 内容可寻址存储器件的一个方面是在存储器单元中使用单个存储器元件和存取器件。 存储器单元被布置成使得每个存储器单元电耦合到单个位线,单个匹配线和单个字线。 如果数据位值是第一个二进制值,则存储器单元中的存储元件存储低电阻状态,如果数据位值是第二个二进制值则为高电阻状态,如果数据位值为“ 关心价值。

    Multi-level memory cell utilizing measurement time delay as the characteristic parameter for level definition
    9.
    发明授权
    Multi-level memory cell utilizing measurement time delay as the characteristic parameter for level definition 有权
    利用测量时间延迟作为电平定义的特征参数的多电平存储单元

    公开(公告)号:US07764533B2

    公开(公告)日:2010-07-27

    申请号:US11857321

    申请日:2007-09-18

    IPC分类号: G11C11/00

    摘要: A memory array and computer program product for operating a memory cell and memory array. An embodiment of the invention entails receiving a request to read a binary value stored in the memory cell. A pre-charging operation pre-charges a bit-line capacitor in an electronic circuit formed by the memory cell to a pre-charge voltage. A word-line in the electronic circuit is then activated. A discharging operation discharges the bit-line capacitor through the said memory cell in the electronic circuit to the word-line. Additionally, an electron discharge time measurement is started when the word-line is activated. The electron discharge time measurement is stopped when the voltage level in the bit-line falls below a pre-defined reference voltage. A determining operation determines the binary value from the measured electron discharge time.

    摘要翻译: 用于操作存储器单元和存储器阵列的存储器阵列和计算机程序产品。 本发明的实施例需要接收读取存储在存储单元中的二进制值的请求。 预充电操作将由存储器单元形成的电子电路中的位线电容器预先充电到预充电电压。 然后激活电子电路中的字线。 放电操作通过电子电路中的所述存储单元将位线电容器放电到字线。 此外,当字线被激活时,电子放电时间测量开始。 当位线中的电压电平低于预定义的参考电压时,停止电子放电时间测量。 确定操作根据测量的电子放电时间确定二进制值。

    Thermally insulated phase change material memory cells
    10.
    发明授权
    Thermally insulated phase change material memory cells 有权
    热绝缘相变材料存储单元

    公开(公告)号:US08536675B2

    公开(公告)日:2013-09-17

    申请号:US13364153

    申请日:2012-02-01

    IPC分类号: H01L23/52 H01L29/00

    摘要: A memory cell structure and method for forming the same. The method includes forming a pore within a dielectric layer. The pore is formed over the center of an electrically conducting bottom electrode. The method includes depositing a thermally insulating layer along at least one sidewall of the pore. The thermally insulating layer isolates heat from phase change current to the volume of the pore. In one embodiment phase change material is deposited within the pore and the volume of the thermally insulating layer. In another embodiment a pore electrode is formed within the pore and the volume of the thermally insulating layer, with the phase change material being deposited above the pore electrode. The method also includes forming an electrically conducting top electrode above the phase change material.

    摘要翻译: 一种存储单元结构及其形成方法。 该方法包括在电介质层内形成孔。 孔形成在导电底部电极的中心上方。 该方法包括沿孔的至少一个侧壁沉积绝热层。 绝热层将热量从相变电流隔离成孔的体积。 在一个实施例中,相变材料沉积在孔隙和隔热层的体积内。 在另一个实施方案中,孔隙电极形成在绝热层的孔隙和体积内,相变材料沉积在孔电极上方。 该方法还包括在相变材料上形成导电顶电极。