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公开(公告)号：US07154772B2
公开(公告)日：2006-12-26
申请号：US11076523
申请日：2005-03-09
IPC分类号： G11C11/00
CPC分类号： G11C11/16
摘要： A magnetoresistive random access memory (MRAM) has separate read and write paths. This reduces the peripheral circuitry by not requiring switching between read and write functions on a particular line. By having the paths dedicated to either read signals or write signals, the voltage levels can be optimized for these functions. The select transistors, which are part of only the read function, may be of the low-voltage type because they do not have to receive the relatively higher voltages of the write circuitry. Similarly, the write voltages do not have to be degraded to accommodate the lower-voltage type transistors. The size of the overall memory is kept efficiently small while improving performance. The memory cells are grouped so that adjacent to groups are coupled to a common global bit line which reduces the space required for providing the capacitance-reducing group approach to memory cell selection.
摘要翻译： 磁阻随机存取存储器（MRAM）具有单独的读写路径。 这通过不需要在特定线路上的读取和写入功能之间切换来减少外围电路。 通过具有专用于读取信号或写入信号的路径，可以针对这些功能优化电压电平。 作为仅读取功能的一部分的选择晶体管可以是低电压型，因为它们不必接收写电路的相对较高的电压。 类似地，写入电压不必降低以适应低电压型晶体管。 整体存储器的大小保持有效小，同时提高性能。 存储器单元被分组，使得与组相邻耦合到公共全局位线，这减少了为降低存储器单元选择提供电容减小组方法所需的空间。
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公开(公告)号：US06760266B2
公开(公告)日：2004-07-06
申请号：US10185566
申请日：2002-06-28
申请人： Bradley J. Garni , Mark F. Deherrera , Mark A. Durlam , Bradley N. Engel , Thomas W. Andre , Joseph J. Nahas , Chitra K. Subramanian
发明人： Bradley J. Garni , Mark F. Deherrera , Mark A. Durlam , Bradley N. Engel , Thomas W. Andre , Joseph J. Nahas , Chitra K. Subramanian
IPC分类号： G11C702
摘要： A sense amplifier (1300, 1500) is provided for sensing the state of a toggling type magnetoresistive random access memory (MRAM) cell without using a reference. The sense amplifier (1300, 1500) employs a sample-and-hold circuit (1336, 1508) combined with a current-to-voltage converter (1301, 1501), gain circuit (1303), and cross-coupled latch (1305, 1503) to sense the state of a bit. The sense amplifier (1300, 1500), first senses and holds a first state of the cell. The cell is toggled to a second state. Then, the sense amplifier (1300, 1500) compares the first state to the second state to determine the first state of a toggling type memory cell.
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公开(公告)号：US06903964B2
公开(公告)日：2005-06-07
申请号：US10185868
申请日：2002-06-28
CPC分类号： G11C11/16
摘要： A magnetoresistive random access memory (MRAM) has separate read and write paths. This reduces the peripheral circuitry by not requiring switching between read and write functions on a particular line. By having the paths dedicated to either read signals or write signals, the voltage levels can be optimized for these functions. The select transistors, which are part of only the read function, may be of the low-voltage type because they do not have to receive the relatively higher voltages of the write circuitry. Similarly, the write voltages do not have to be degraded to accommodate the lower-voltage type transistors. The size of the overall memory is kept efficiently small while improving performance. The memory cells are grouped so that adjacent to groups are coupled to a common global bit line which reduces the space required for providing the capacitance-reducing group approach to memory cell selection.
摘要翻译： 磁阻随机存取存储器（MRAM）具有单独的读写路径。 这通过不需要在特定线路上的读取和写入功能之间切换来减少外围电路。 通过具有专用于读取信号或写入信号的路径，可以针对这些功能优化电压电平。 作为仅读取功能的一部分的选择晶体管可以是低电压型，因为它们不必接收写电路的相对较高的电压。 类似地，写入电压不必降低以适应低电压型晶体管。 整体存储器的大小保持有效小，同时提高性能。 存储器单元被分组，使得与组相邻耦合到公共全局位线，这减少了为降低存储器单元选择提供电容减小组方法所需的空间。
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公开(公告)号：US06909631B2
公开(公告)日：2005-06-21
申请号：US10679134
申请日：2003-10-02
申请人： Mark A. Durlam , Thomas W. Andre , Mark F. DeHerrera , Bradley N. Engel , Bradley J. Garni , Joseph J. Nahas , Nicholas D. Rizzo , Saied Tehrani
发明人： Mark A. Durlam , Thomas W. Andre , Mark F. DeHerrera , Bradley N. Engel , Bradley J. Garni , Joseph J. Nahas , Nicholas D. Rizzo , Saied Tehrani
摘要： An MRAM is provided that minimizes the limits in MRAM density imposed by utilization of an isolation or select device in each memory cell. In addition, methods are provided for reading an MTJ in a ganged memory cell of the MRAM. The method includes determining an electrical value that is at least partially associated with a resistance of a ganged memory cell of the MRAM. The MTJ in the ganged memory cell is toggled and a second electrical value, which is at least partially associated with the resistance of the ganged memory cell, is determined after toggling the MTJ. Once the electrical value prior to the toggling and after the toggling is determined, the difference between the two electrical values is analyzed to determine the value of the MTJ.
摘要翻译： 提供了一种MRAM，其通过利用每个存储单元中的隔离或选择装置来最小化MRAM密度的限制。 另外，提供了用于读取MRAM的联动存储单元中的MTJ的方法。 该方法包括确定至少部分地与MRAM的联动存储器单元的电阻相关联的电气值。 切换联合存储器单元中的MTJ，并且在切换MTJ之后确定至少部分地与组合存储器单元的电阻相关联的第二电值。 一旦确定了切换之前和切换之后的电气值，则分析两个电气值之间的差异，以确定MTJ的值。
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公开(公告)号：US06888743B2
公开(公告)日：2005-05-03
申请号：US10331058
申请日：2002-12-27
申请人： Mark A. Durlam , Thomas W. Andre , Brian R. Butcher , Mark F. Deherrera , Bradley N. Engel , Bradley J. Garni , Gregory W. Grynkewich , Joseph J. Nahas , Nicholas D. Rizzo , Saied Tehrani , Clarance J. Tracy
发明人： Mark A. Durlam , Thomas W. Andre , Brian R. Butcher , Mark F. Deherrera , Bradley N. Engel , Bradley J. Garni , Gregory W. Grynkewich , Joseph J. Nahas , Nicholas D. Rizzo , Saied Tehrani , Clarance J. Tracy
CPC分类号： G11C11/16
摘要： An MRAM architecture is provided that reduces the number of isolation transistors. The MRAM architecture includes magnetoresistive memory cells that are electrically coupled to form a ganged memory cell. The magnetoresistive memory cells of the ganged memory cell are formed with Magnetic Tunnel Junctions (MTJs) and formed without isolation devices, such as isolation transistors, and a programming line and a bit line are adjacent to each of the magnetoresistive memory cells. Preferably, the magnetoresistive memory cells of the ganged memory cell only include MTJs, and a programming line and a bit line are adjacent to each of the magnetoresistive memory cells.
摘要翻译： 提供了一种减少隔离晶体管数量的MRAM架构。 MRAM架构包括电耦合以形成有组合的存储单元的磁阻存储单元。 组合存储单元的磁阻存储单元由磁隧道结（MTJ）形成，并且形成为没有隔离器件，例如隔离晶体管，并且编程线和位线与每个磁阻存储器单元相邻。 优选地，联动存储单元的磁阻存储单元仅包括MTJ，并且编程线和位线与每个磁阻存储单元相邻。
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6.发明授权公开(公告)号：US07747926B2
公开(公告)日：2010-06-29
申请号：US11416850
申请日：2006-05-02
申请人： Loren J. Wise , Thomas W. Andre , Mark A. Durlam , Eric J. Salter
发明人： Loren J. Wise , Thomas W. Andre , Mark A. Durlam , Eric J. Salter
IPC分类号： G11C29/00
CPC分类号： G11C29/52 , G06F11/1008 , G11C11/16
摘要： A memory device, such an MRAM device, includes self-healing reference bits (104) associated with a set of array bits (102). The memory performs an error detection step (e.g., using an error-correction coding (ECC) algorithm, to detect the presence of a set of errors within the data bits. One of the reference bits (104) is toggled to a different state if an error count is greater than a predetermined threshold. If the set of errors remains unchanged when subsequently read, the reference bit (104) is toggled back to its original state.
摘要翻译： 诸如MRAM设备的存储器件包括与一组阵列位（102）相关联的自修复参考位（104）。 存储器执行错误检测步骤（例如，使用纠错编码（ECC）算法）来检测数据位内的一组错误的存在，其中一个参考位（104）被切换到不同的状态，如果 错误计数大于预定阈值，如果随后读取的错误集合保持不变，则将参考位（104）切换回其初始状态。
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公开(公告)号：US07510883B2
公开(公告)日：2009-03-31
申请号：US11239884
申请日：2005-09-30
申请人： Young Sir Chung , Robert W. Baird , Mark A. Durlam
发明人： Young Sir Chung , Robert W. Baird , Mark A. Durlam
CPC分类号： H01L27/228 , G01K7/36 , Y10T428/1114
摘要： Techniques of sensing a temperature of a heat source disposed in a substrate of an integrated circuit are provided. According to one exemplary method, a Magnetic Tunnel Junction (“MTJ”) temperature sensor is provided over the heat source. The MTJ temperature sensor comprises an MTJ core configured to output a current during operation thereof. The value of the current varies based on a resistance value of the particular MTJ core. The resistance value of the MTJ core varies as a function of the temperature of the heat source. A value of the current of the MTJ core can then be associated with a corresponding temperature of the heat source.
摘要翻译： 提供了感测设置在集成电路的基板中的热源的温度的技术。 根据一个示例性方法，在热源上提供磁隧道结（“MTJ”）温度传感器。 MTJ温度传感器包括被配置为在其操作期间输出电流的MTJ内核。 电流值根据特定MTJ磁芯的电阻值而变化。 MTJ芯的电阻值随着热源的温度而变化。 然后，MTJ芯的电流的值可以与热源的相应温度相关联。
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8.发明授权3-D inductor and transformer devices in MRAM embedded integrated circuits 失效3-D电感和变压器装置在MRAM嵌入式集成电路中公开(公告)号：US07262069B2
公开(公告)日：2007-08-28
申请号：US11147599
申请日：2005-06-07
IPC分类号： H01L21/00
CPC分类号： H01L27/222 , G11C11/16 , H01F17/0006 , H01F19/04 , H01L23/5227 , H01L2924/0002 , H01L2924/00
摘要： An integrated circuit device includes a magnetic random access memory (“MRAM”) architecture and at least one inductance element formed on the same substrate using the same fabrication process technology. The inductance element, which may be an inductor or a transformer, is formed at the same metal layer (or layers) as the program lines of the MRAM architecture. Any available metal layer in addition to the program line layers can be added to the inductance element to enhance its efficiency. The concurrent fabrication of the MRAM architecture and the inductance element facilitates an efficient and cost effective use of the physical space available over active circuit blocks of the substrate, resulting in three-dimensional integration.
摘要翻译： 集成电路器件包括磁性随机存取存储器（“MRAM”）结构以及使用相同的制造工艺技术在同一衬底上形成的至少一个电感元件。 可以是电感器或变压器的电感元件形成在与MRAM架构的程序线相同的金属层（或多层）上。 除了编程线层之外，可以将任何可用的金属层添加到电感元件以增强其效率。 MRAM架构和电感元件的并发制造有助于在衬底的有源电路块上可用的物理空间的有效和成本有效的使用，从而导致三维集成。
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9.发明授权公开(公告)号：US07169622B2
公开(公告)日：2007-01-30
申请号：US10912979
申请日：2004-08-05
IPC分类号： H01L21/00
CPC分类号： G11C11/16 , B82Y10/00 , H01L27/228
摘要： Fabricating a magnetoresistive random access memory cell and a structure for a magnetoresistive random access memory cell begins by providing a substrate having a transistor formed therein. A contact element is formed electrically coupled to the transistor and a dielectric material is deposited within an area partially bounded by the contact element. A digit line is formed within the dielectric material, the digit line overlying a portion of the contact element. A conductive layer is formed overlying the digit line and in electrical communication with the contact element.
摘要翻译： 制造磁阻随机存取存储器单元和用于磁阻随机存取存储单元的结构开始于提供其中形成有晶体管的衬底。 形成电耦合到晶体管的接触元件，并且电介质材料沉积在由接触元件部分界定的区域内。 在电介质材料内形成数字线，数字线覆盖接触元件的一部分。 导电层形成在数字线上方并与接触元件电连通。
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10.发明授权公开(公告)号：US06518071B1
公开(公告)日：2003-02-11
申请号：US10109429
申请日：2002-03-28
申请人： Mark A. Durlam , Mark F. Deherrera , Kelly W. Kyler , Brian R. Butcher , Gregory W. Grynkewich , Steven M. Smith , Charles Snyder , Jon M. Slaughter
发明人： Mark A. Durlam , Mark F. Deherrera , Kelly W. Kyler , Brian R. Butcher , Gregory W. Grynkewich , Steven M. Smith , Charles Snyder , Jon M. Slaughter
IPC分类号： H01L2100
CPC分类号： H01L43/12
摘要： A method of fabricating a MRAM device with a taper comprising the steps of providing a substrate, forming a dielectric region with positioned on the substrate, patterning and isotropically etching through the dielectric region to the substrate to form a trench, depositing the MRAM device within the trench wherein the MRAM device includes a first ferromagnetic region with a width positioned on the substrate, a non-ferromagnetic spacer layer with a width positioned on the first ferromagnetic region, and a second ferromagnetic region with a width positioned on the non-ferromagnetic spacer layer wherein the taper is formed by making the width of the first ferromagnetic region greater than the width of the non-ferromagnetic spacer layer, and the width of the non-ferromagnetic spacer layer greater than the width of the second ferromagnetic region so that the first ferromagnetic region is separated from the second ferromagnetic region.
摘要翻译： 一种制造具有锥形的MRAM器件的方法，包括以下步骤：提供衬底，形成位于衬底上的电介质区域，对介质区域进行图案化和各向同性地蚀刻到衬底以形成沟槽，将MRAM器件沉积在 沟槽，其中MRAM器件包括位于衬底上的宽度的第一铁磁区域，具有位于第一铁磁区域上的宽度的非铁磁间隔层，以及位于非铁磁间隔层上的宽度的第二铁磁区域 其中所述锥形通过使所述第一铁磁性区域的宽度大于所述非铁磁间隔层的宽度而形成，并且所述非铁磁隔离层的宽度大于所述第二铁磁区域的宽度，使得所述第一铁磁性区域 区域与第二铁磁区域分离。
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