SEMICONDUCTOR MEMORY DEVICE HAVING RESISTIVE MEMORY CELLS AND METHOD OF TESTING THE SAME
    3.
    发明申请
    SEMICONDUCTOR MEMORY DEVICE HAVING RESISTIVE MEMORY CELLS AND METHOD OF TESTING THE SAME 有权
    具有电阻记忆体的半导体存储器件及其测试方法

    公开(公告)号:US20140022836A1

    公开(公告)日:2014-01-23

    申请号:US13945007

    申请日:2013-07-18

    IPC分类号: G11C29/10 G11C11/16

    摘要: A semiconductor memory device includes a memory cell array, a mode register set and a test circuit. The memory cell array includes a plurality of wordlines, a plurality of bitlines, and a plurality of spin-transfer torque magneto-resistive random access memory (STT-MRAM) cells, and each STT-MRAM cell disposed in a cross area of each wordline and bitline, and the STT-MRAM cell includes a magnetic tunnel junction (MTJ) element and a cell transistor. The MTJ element includes a free layer, a barrier layer and a pinned layer. A gate of the cell transistor is coupled to a wordline, a first electrode of the cell transistor is coupled to a bitline via the MTJ element, and a second electrode of the cell transistor is coupled to a source line. The mode register set is configured to set a test mode, and the test circuit is configured to perform a test operation by using the mode register set.

    摘要翻译: 半导体存储器件包括存储单元阵列,模式寄存器组和测试电路。 存储单元阵列包括多个字线,多个位线和多个自旋转移转矩磁阻随机存取存储器(STT-MRAM)单元,每个STT-MRAM单元设置在每个字线的交叉区域 和位线,并且STT-MRAM单元包括磁隧道结(MTJ)元件和单元晶体管。 MTJ元件包括自由层,阻挡层和钉扎层。 单元晶体管的栅极耦合到字线,单元晶体管的第一电极通过MTJ元件耦合到位线,并且单元晶体管的第二电极耦合到源极线。 模式寄存器组被配置为设置测试模式,并且测试电路被配置为通过使用模式寄存器集执行测试操作。

    MEMORY DEVICES AND MEMORY CONTROLLERS
    6.
    发明申请
    MEMORY DEVICES AND MEMORY CONTROLLERS 有权
    存储器件和存储器控制器

    公开(公告)号:US20130279283A1

    公开(公告)日:2013-10-24

    申请号:US13733884

    申请日:2013-01-03

    IPC分类号: G11C7/00

    CPC分类号: G11C7/00 G11C11/40611

    摘要: A memory system includes at least one memory device and a memory controller. The at least one memory device includes a refresh request circuit that generates refresh request signals at timings based on data retention times of memory cells, such as based on individual data retention times of a memory cell row. The memory controller schedules operation commands for the at least one memory device in response to the received refresh request signals.

    摘要翻译: 存储器系统包括至少一个存储器设备和存储器控制器。 所述至少一个存储器件包括刷新请求电路,其基于存储器单元的数据保留时间(例如基于存储器单元行的各个数据保留时间)在定时产生刷新请求信号。 存储器控制器响应于接收到的刷新请求信号调度至少一个存储器件的操作命令。

    MEMORY DEVICE HAVING ERROR NOTIFICATION FUNCTION
    7.
    发明申请
    MEMORY DEVICE HAVING ERROR NOTIFICATION FUNCTION 有权
    具有错误通知功能的存储器

    公开(公告)号:US20160055056A1

    公开(公告)日:2016-02-25

    申请号:US14729656

    申请日:2015-06-03

    IPC分类号: G06F11/10 G11C29/52

    摘要: A memory device having an error notification function includes an error correction code (ECC) engine detecting and correcting an error bit by performing an ECC operation on data of the plurality of memory cells, and an error notifying circuit configured to output an error signal according to the ECC operation. The ECC engine outputs error information corresponding to the error bit corresponding to a particular address corrected by the ECC operation. The error notifying circuit may output the error signal when the particular address is not the same as any one of existing one or more failed addresses.

    摘要翻译: 具有错误通知功能的存储装置包括通过对多个存储单元的数据执行ECC操作来检测和校正错误位的纠错码(ECC)引擎,以及错误通知电路,配置为根据 ECC操作。 ECC引擎输出与通过ECC操作校正的特定地址相对应的错误位对应的错误信息。 当特定地址与现有一个或多个故障地址中的任一个不同时,错误通知电路可以输出错误信号。

    MEMORY DEVICES WITH SELECTIVE ERROR CORRECTION CODE
    8.
    发明申请
    MEMORY DEVICES WITH SELECTIVE ERROR CORRECTION CODE 有权
    具有选择性错误修正代码的存储器件

    公开(公告)号:US20140013183A1

    公开(公告)日:2014-01-09

    申请号:US13915179

    申请日:2013-06-11

    IPC分类号: G06F11/10

    摘要: An error correction apparatus includes an error correction circuit configured to selectively perform error correction on a portion of data that is at least one of written to and read from a plurality of memory cells of a memory device. The portion of data is at least one of written to and read from a subset of the plurality of memory cells, and the subset includes only fail cells among the plurality of memory cells. The error correction apparatus further includes a fail address storage circuit configured to store address information for the fail cells.

    摘要翻译: 纠错装置包括:纠错电路,被配置为对存储器件的多个存储单元的至少一个写入和读出的数据的一部分进行选择性地执行纠错。 数据的部分是从多个存储器单元的子集写入和读出中的至少一个,并且该子集仅包括多个存储器单元中的故障单元。 误差校正装置还包括故障地址存储电路,其被配置为存储故障单元的地址信息。

    METHOD FOR OUTPUTTING INTERNAL TEMPERATURE DATA IN SEMICONDUCTOR MEMORY DEVICE AND CIRCUIT OF OUTPUTTING INTERNAL TEMPERATURE DATA THEREBY
    9.
    发明申请
    METHOD FOR OUTPUTTING INTERNAL TEMPERATURE DATA IN SEMICONDUCTOR MEMORY DEVICE AND CIRCUIT OF OUTPUTTING INTERNAL TEMPERATURE DATA THEREBY 审中-公开
    在半导体存储器件中输出内部温度数据的方法和输出内部温度数据的电路

    公开(公告)号:US20070109013A1

    公开(公告)日:2007-05-17

    申请号:US11566670

    申请日:2006-12-04

    IPC分类号: H03K19/003

    CPC分类号: G01K7/42

    摘要: A method for outputting internal temperature data in a semiconductor memory device can output, at high speed, relatively accurate temperature data externally, without continuously or periodically driving a temperature sensor. The method for outputting the internal temperature data comprises externally outputting internal temperature data stored in a register in a preceding driving cycle in response to a temperature data request signal; driving a temperature sensor during a predefined time section after the output of the internal temperature data is completed; and storing the internal temperature data obtained from the temperature sensor in the register. Power consumption is reduced and accurate temperature data is output externally within a shorter time.

    摘要翻译: 用于输出半导体存储器件中的内部温度数据的方法可以高速输出外部相对精确的温度数据,而不用连续地或周期地驱动温度传感器。 用于输出内部温度数据的方法包括响应于温度数据请求信号在前一个驱动周期内外部输出存储在寄存器中的内部温度数据; 在内部温度数据的输出完成之后的预定时间段内驱动温度传感器; 并将从温度传感器获得的内部温度数据存储在寄存器中。 降低功耗,并在较短的时间内外部输出精确的温度数据。