Non-volatile flip-flop
    3.
    发明授权
    Non-volatile flip-flop 有权
    非易失性触发器

    公开(公告)号:US08670266B2

    公开(公告)日:2014-03-11

    申请号:US13361760

    申请日:2012-01-30

    IPC分类号: G11C11/00 G11C11/14 G11C7/10

    摘要: A flip-flop has an output control node and an isolation switch selectively couples a retention sense node to the output control node. A sense circuit selectively couples an external sense current source to the retention sense node and to magnetic tunneling junction (MTJ) elements. Optionally a write circuit selectively injects a write current through one MTJ element and then another MTJ element. Optionally, a write circuit injects a write current through a first MTJ element concurrently with injecting a write current through a second MTJ element.

    摘要翻译: 触发器具有输出控制节点,并且隔离开关选择性地将保持感测节点耦合到输出控制节点。 感测电路将外部感测电流源选择性地耦合到保持感测节点和磁性隧道结(MTJ)元件。 可选地,写入电路通过一个MTJ元件和另一个MTJ元件选择性地注入写入电流。 可选地,写入电路通过第一MTJ元件同时注入写入电流,并通过第二MTJ元件注入写入电流。

    Low sensing current non-volatile flip-flop
    6.
    发明授权
    Low sensing current non-volatile flip-flop 有权
    低感测电流非易失性触发器

    公开(公告)号:US09196337B2

    公开(公告)日:2015-11-24

    申请号:US13613205

    申请日:2012-09-13

    IPC分类号: G11C11/16 G11C7/06 G11C14/00

    摘要: A low sensing current non volatile flip flop includes a first stage to sense a resistance difference between two magnetic tunnel junctions (MTJs) and a second stage having circuitry to amplify the output of the first stage. The output of the first stage is initially pre-charged and determined by the resistance difference of the two MTJs when the sensing operation starts. The first stage does not have a pull-up path to a source voltage (VDD), and therefore does not have a DC path from VDD to ground during the sensing operation. A slow sense enable (SE) signal slope reduces peak sensing current in the first stage. A secondary current path reduces the sensing current duration of the first stage.

    摘要翻译: 低感测电流非易失性触发器包括用于感测两个磁性隧道结(MTJ)之间的电阻差的第一级和具有用于放大第一级的输出的电路的第二级。 第一级的输出最初是预充电的,并且由感测操作开始时的两个MTJ的电阻差决定。 第一级没有到源极电压(VDD)的上拉路径,因此在感测操作期间没有从VDD到地的DC路径。 缓慢感应使能(SE)信号斜率可以降低第一级的峰值检测电流。 次级电流路径减小了第一级的感测电流持续时间。

    NON-VOLATILE FLIP-FLOP
    7.
    发明申请
    NON-VOLATILE FLIP-FLOP 有权
    非挥发性飞溅

    公开(公告)号:US20130194862A1

    公开(公告)日:2013-08-01

    申请号:US13361760

    申请日:2012-01-30

    IPC分类号: G11C11/16

    摘要: A flip-flop has an output control node and an isolation switch selectively couples a retention sense node to the output control node. A sense circuit selectively couples an external sense current source to the retention sense node and to magnetic tunneling junction (MTJ) elements. Optionally a write circuit selectively injects a write current through one MTJ element and then another MTJ element. Optionally, a write circuit injects a write current through a first MTJ element concurrently with injecting a write current through a second MTJ element.

    摘要翻译: 触发器具有输出控制节点,并且隔离开关选择性地将保持感测节点耦合到输出控制节点。 感测电路将外部感测电流源选择性地耦合到保持感测节点和磁性隧道结(MTJ)元件。 可选地,写入电路通过一个MTJ元件和另一个MTJ元件选择性地注入写入电流。 可选地,写入电路通过第一MTJ元件同时注入写入电流,并通过第二MTJ元件注入写入电流。

    Latching Circuit
    8.
    发明申请
    Latching Circuit 有权
    闭锁电路

    公开(公告)号:US20120026783A1

    公开(公告)日:2012-02-02

    申请号:US12847371

    申请日:2010-07-30

    IPC分类号: G11C11/00 G11C7/10

    摘要: A non-volatile latch circuit includes a pair of cross-coupled inverters, a pair of resistance-based memory elements, and write circuitry configured to write data to the pair of resistance-based memory elements. The pair of resistance-based memory elements is isolated from the pair of cross-coupled inverters during a latching operation. A sensing circuit includes a first current path that includes a first resistance-based memory element and an output of the sensing circuit. The sensing circuit includes a second current path to reduce current flow through the first resistance-based memory element at a first operating point of the sensing circuit. The sensing circuit may also include an n-type metal-oxide-semiconductor (NMOS) transistor to provide a step down supply voltage to the first current path.

    摘要翻译: 非易失性锁存电路包括一对交叉耦合的反相器,一对基于电阻的存储器元件和被配置为将数据写入到该对基于电阻的存储器元件的写入电路。 在锁定操作期间,一对基于电阻的存储器元件与一对交叉耦合的反相器隔离。 感测电路包括第一电流路径,其包括第一基于电阻的存储元件和感测电路的输出。 感测电路包括第二电流路径,以减小在感测电路的第一工作点处通过第一基于电阻的存储元件的电流。 感测电路还可以包括n型金属氧化物半导体(NMOS)晶体管,以向第一电流路径提供降压电源电压。

    Invalid Write Prevention for STT-MRAM Array
    9.
    发明申请
    Invalid Write Prevention for STT-MRAM Array 有权
    STT-MRAM阵列无效写入预防

    公开(公告)号:US20110267874A1

    公开(公告)日:2011-11-03

    申请号:US12769995

    申请日:2010-04-29

    摘要: In a Spin Transfer Torque Magnetoresistive Random Access Memory (STT-MRAM) a bit cell array can have a source line substantially parallel to a word line. The source line can be substantially perpendicular to bit lines. A source line control unit includes a common source line driver and a source line selector configured to select individual ones of the source lines. The source line driver and source line selector can be coupled in multiplexed relation. A bit line control unit includes a common bit line driver and a bit line selector in multiplexed relation. The bit line control unit includes a positive channel metal oxide semiconductor (PMOS) element coupled between the common source line driver and bit line select lines and bit lines.

    摘要翻译: 在自旋转移力矩磁阻随机存取存储器(STT-MRAM)中,位单元阵列可以具有基本上平行于字线的源极线。 源极线可以基本上垂直于位线。 源极线控制单元包括公共源极线驱动器和被配置为选择各个源极线的源极线选择器。 源极线驱动器和源极线选择器可以以多路复用关系耦合。 位线控制单元包括公共位线驱动器和复用关系的位线选择器。 位线控制单元包括耦合在公共源线驱动器和位线选择线和位线之间的正沟道金属氧化物半导体(PMOS)元件。

    LOW SENSING CURRENT NON-VOLATILE FLIP-FLOP
    10.
    发明申请
    LOW SENSING CURRENT NON-VOLATILE FLIP-FLOP 有权
    低感测电流非挥发性FLOP-FLOP

    公开(公告)号:US20130286721A1

    公开(公告)日:2013-10-31

    申请号:US13613205

    申请日:2012-09-13

    IPC分类号: G11C11/16

    摘要: A low sensing current non volatile flip flop includes a first stage to sense a resistance difference between two magnetic tunnel junctions (MTJs) and a second stage having circuitry to amplify the output of the first stage. The output of the first stage is initially pre-charged and determined by the resistance difference of the two MTJs when the sensing operation starts. The first stage does not have a pull-up path to a source voltage (VDD), and therefore does not have a DC path from VDD to ground during the sensing operation. A slow sense enable (SE) signal slope reduces peak sensing current in the first stage. A secondary current path reduces the sensing current duration of the first stage.

    摘要翻译: 低感测电流非易失性触发器包括用于感测两个磁性隧道结(MTJ)之间的电阻差的第一级和具有用于放大第一级的输出的电路的第二级。 第一级的输出最初是预充电的,并且由感测操作开始时的两个MTJ的电阻差决定。 第一级没有到源极电压(VDD)的上拉路径,因此在感测操作期间没有从VDD到地的直流路径。 缓慢感应使能(SE)信号斜率可以降低第一级的峰值检测电流。 次级电流路径减小了第一级的感测电流持续时间。