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公开(公告)号:US20120087175A1
公开(公告)日:2012-04-12
申请号:US13333598
申请日:2011-12-21
申请人: Wenzhong Zhu , Yong Lu , Xiaobin Wang , Yiran Chen , Alan Xuguang Wang , Xiaohua Lou , Haiwen Xi
发明人: Wenzhong Zhu , Yong Lu , Xiaobin Wang , Yiran Chen , Alan Xuguang Wang , Xiaohua Lou , Haiwen Xi
IPC分类号: G11C11/00
CPC分类号: G11C11/16 , G11C11/1659 , G11C11/1675
摘要: An apparatus and method for compensating for asymmetric write current in a non-volatile unit cell. The unit cell comprises a switching device and an asymmetric resistive sense element (RSE), such as an asymmetric resistive random access memory (RRAM) element or an asymmetric spin-torque transfer random access memory (STRAM) element. The RSE is physically oriented within the unit cell relative to the switching device such that a hard direction for programming the RSE is aligned with an easy direction of programming the unit cell, and an easy direction for programming the RSE is aligned with a hard direction for programming the unit cell.
摘要翻译: 一种用于补偿非易失性单元中不对称写入电流的装置和方法。 单位单元包括开关装置和非对称电阻感测元件(RSE),诸如非对称电阻随机存取存储器(RRAM)元件或非对称自旋转矩传递随机存取存储器(STRAM)元件。 RSE相对于开关装置在物理上定位在单位单元内,使得用于编程RSE的硬方向与单元单元的简单编程方向对齐,并且用于编程RSE的简单方向与硬方向对齐 编程单元格
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公开(公告)号:US07881096B2
公开(公告)日:2011-02-01
申请号:US12408996
申请日:2009-03-23
申请人: Wenzhong Zhu , Yong Lu , Xiaobin Wang , Yiran Chen , Alan Xuguang Wang , Xiaohua Lou , Haiwen Xi
发明人: Wenzhong Zhu , Yong Lu , Xiaobin Wang , Yiran Chen , Alan Xuguang Wang , Xiaohua Lou , Haiwen Xi
IPC分类号: G11C17/00
CPC分类号: G11C11/16 , G11C11/1659 , G11C11/1675
摘要: An apparatus and method for compensating for asymmetric write current in a non-volatile unit cell. The unit cell comprises a switching device and an asymmetric resistive sense element (RSE), such as an asymmetric resistive random access memory (RRAM) element or an asymmetric spin-torque transfer random access memory (STRAM) element. The RSE is physically oriented within the unit cell relative to the switching device such that a hard direction for programming the RSE is aligned with an easy direction of programming the unit cell, and an easy direction for programming the RSE is aligned with a hard direction for programming the unit cell.
摘要翻译: 一种用于补偿非易失性单元中不对称写入电流的装置和方法。 单位单元包括开关装置和非对称电阻感测元件(RSE),诸如非对称电阻随机存取存储器(RRAM)元件或非对称自旋转矩传递随机存取存储器(STRAM)元件。 RSE相对于开关装置在物理上定位在单位单元内,使得用于编程RSE的硬方向与单元单元的简单编程方向对齐,并且用于编程RSE的简单方向与硬方向对齐 编程单元格
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公开(公告)号:US08320169B2
公开(公告)日:2012-11-27
申请号:US13333598
申请日:2011-12-21
申请人: Wenzhong Zhu , Yong Lu , Xiaobin Wang , Yiran Chen , Alan Xuguang Wang , Xiaohua Lou , Haiwen Xi
发明人: Wenzhong Zhu , Yong Lu , Xiaobin Wang , Yiran Chen , Alan Xuguang Wang , Xiaohua Lou , Haiwen Xi
IPC分类号: G11C11/00
CPC分类号: G11C11/16 , G11C11/1659 , G11C11/1675
摘要: An apparatus and method for compensating for asymmetric write current in a non-volatile unit cell. The unit cell comprises a switching device and an asymmetric resistive sense element (RSE), such as an asymmetric resistive random access memory (RRAM) element or an asymmetric spin-torque transfer random access memory (STRAM) element. The RSE is physically oriented within the unit cell relative to the switching device such that a hard direction for programming the RSE is aligned with an easy direction of programming the unit cell, and an easy direction for programming the RSE is aligned with a hard direction for programming the unit cell.
摘要翻译: 一种用于补偿非易失性单元中不对称写入电流的装置和方法。 单位单元包括开关装置和非对称电阻感测元件(RSE),诸如非对称电阻随机存取存储器(RRAM)元件或非对称自旋转矩传递随机存取存储器(STRAM)元件。 RSE相对于开关装置在物理上定位在单位单元内,使得用于编程RSE的硬方向与单元单元的简单编程方向对齐,并且用于编程RSE的简单方向与硬方向对齐 编程单元格
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公开(公告)号:US20100085795A1
公开(公告)日:2010-04-08
申请号:US12408996
申请日:2009-03-23
申请人: Wenzhong Zhu , Yong Lu , Xiaobin Wang , Yiran Chen , Alan Xuguang Wang , Xiaohua Lou , Haiwen Xi
发明人: Wenzhong Zhu , Yong Lu , Xiaobin Wang , Yiran Chen , Alan Xuguang Wang , Xiaohua Lou , Haiwen Xi
IPC分类号: G11C11/00 , G11C11/14 , G11C11/416
CPC分类号: G11C11/16 , G11C11/1659 , G11C11/1675
摘要: An apparatus and method for compensating for asymmetric write current in a non-volatile unit cell. The unit cell comprises a switching device and an asymmetric resistive sense element (RSE), such as an asymmetric resistive random access memory (RRAM) element or an asymmetric spin-torque transfer random access memory (STRAM) element. The RSE is physically oriented within the unit cell relative to the switching device such that a hard direction for programming the RSE is aligned with an easy direction of programming the unit cell, and an easy direction for programming the RSE is aligned with a hard direction for programming the unit cell.
摘要翻译: 一种用于补偿非易失性单元中不对称写入电流的装置和方法。 单位单元包括开关装置和非对称电阻感测元件(RSE),诸如非对称电阻随机存取存储器(RRAM)元件或非对称自旋转矩传递随机存取存储器(STRAM)元件。 RSE相对于开关装置在物理上定位在单位单元内,使得用于编程RSE的硬方向与单元单元的简单编程方向对齐,并且用于编程RSE的简单方向与硬方向对齐 编程单元格
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公开(公告)号:US20110134688A1
公开(公告)日:2011-06-09
申请号:US13016445
申请日:2011-01-28
申请人: Wenzhong Zhu , Yong Lu , Xiaobin Wang , Yiran Chen , Alan Xuguang Wang , Xiaohua Lou , Haiwen Xi
发明人: Wenzhong Zhu , Yong Lu , Xiaobin Wang , Yiran Chen , Alan Xuguang Wang , Xiaohua Lou , Haiwen Xi
CPC分类号: G11C11/16 , G11C11/1659 , G11C11/1675
摘要: An apparatus and method for compensating for asymmetric write current in a non-volatile unit cell. The unit cell comprises a switching device and an asymmetric resistive sense element (RSE), such as an asymmetric resistive random access memory (RRAM) element or an asymmetric spin-torque transfer random access memory (STRAM) element. The RSE is physically oriented within the unit cell relative to the switching device such that a hard direction for programming the RSE is aligned with an easy direction of programming the unit cell, and an easy direction for programming the RSE is aligned with a hard direction for programming the unit cell.
摘要翻译: 一种用于补偿非易失性单元中不对称写入电流的装置和方法。 单位单元包括开关装置和非对称电阻感测元件(RSE),诸如非对称电阻随机存取存储器(RRAM)元件或非对称自旋转矩传递随机存取存储器(STRAM)元件。 RSE相对于开关装置在物理上定位在单位单元内,使得用于编程RSE的硬方向与单元单元的简单编程方向对齐,并且用于编程RSE的简单方向与硬方向对齐 编程单元格
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公开(公告)号:US08107282B2
公开(公告)日:2012-01-31
申请号:US13016445
申请日:2011-01-28
申请人: Wenzhong Zhu , Yong Lu , Xiaobin Wang , Yiran Chen , Alan Xuguang Wang , Xiaohua Lou , Haiwen Xi
发明人: Wenzhong Zhu , Yong Lu , Xiaobin Wang , Yiran Chen , Alan Xuguang Wang , Xiaohua Lou , Haiwen Xi
IPC分类号: G11C11/00
CPC分类号: G11C11/16 , G11C11/1659 , G11C11/1675
摘要: An apparatus and method for compensating for asymmetric write current in a non-volatile unit cell. The unit cell comprises a switching device and an asymmetric resistive sense element (RSE), such as an asymmetric resistive random access memory (RRAM) element or an asymmetric spin-torque transfer random access memory (STRAM) element. The RSE is physically oriented within the unit cell relative to the switching device such that a hard direction for programming the RSE is aligned with an easy direction of programming the unit cell, and an easy direction for programming the RSE is aligned with a hard direction for programming the unit cell.
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公开(公告)号:US20100067281A1
公开(公告)日:2010-03-18
申请号:US12210526
申请日:2008-09-15
申请人: Haiwen Xi , Hongyue Liu , Xiaobin Wang , Yong Lu , Yiran Chen , Yuankai Zheng , Dimitar V. Dimitrov , Dexin Wang , Hai Li
发明人: Haiwen Xi , Hongyue Liu , Xiaobin Wang , Yong Lu , Yiran Chen , Yuankai Zheng , Dimitar V. Dimitrov , Dexin Wang , Hai Li
CPC分类号: G11C11/16 , G11C13/0007 , G11C13/004 , G11C13/0064 , G11C13/0069 , G11C2013/0057
摘要: Variable write and read methods for resistance random access memory (RRAM) are disclosed. The methods include initializing a write sequence and verifying the resistance state of the RRAM cell. If a write pulse is needed, then two or more write pulses are applied through the RRAM cell to write the desired data state to the RRAM cell. Each subsequent write pulse has substantially the same or greater write pulse duration. Subsequent write pulses are applied to the RRAM cell until the RRAM cell is in the desired data state or until a predetermined number of write pulses have been applied to the RRAM cell. A read method is also disclosed where subsequent read pulses are applied through the RRAM cell until the read is successful or until a predetermined number of read pulses have been applied to the RRAM cell.
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公开(公告)号:US08054675B2
公开(公告)日:2011-11-08
申请号:US13028246
申请日:2011-02-16
申请人: Haiwen Xi , Hongyue Liu , Xiaobin Wang , Yong Lu , Yiran Chen , Yuankai Zheng , Dimitar V. Dimitrov , Dexin Wang , Hai Li
发明人: Haiwen Xi , Hongyue Liu , Xiaobin Wang , Yong Lu , Yiran Chen , Yuankai Zheng , Dimitar V. Dimitrov , Dexin Wang , Hai Li
CPC分类号: G11C11/16 , G11C13/0007 , G11C13/004 , G11C13/0064 , G11C13/0069 , G11C2013/0057
摘要: Variable write and read methods for resistance random access memory (RRAM) are disclosed. The methods include initializing a write sequence and verifying the resistance state of the RRAM cell. If a write pulse is needed, then two or more write pulses are applied through the RRAM cell to write the desired data state to the RRAM cell. Each subsequent write pulse has substantially the same or greater write pulse duration. Subsequent write pulses are applied to the RRAM cell until the RRAM cell is in the desired data state or until a predetermined number of write pulses have been applied to the RRAM cell. A read method is also disclosed where subsequent read pulses are applied through the RRAM cell until the read is successful or until a predetermined number of read pulses have been applied to the RRAM cell.
摘要翻译: 公开了用于电阻随机存取存储器(RRAM)的可变写和读方法。 这些方法包括初始化写入序列并验证RRAM单元的电阻状态。 如果需要写入脉冲,则通过RRAM单元施加两个或更多写入脉冲,以将期望的数据状态写入RRAM单元。 每个后续写入脉冲具有基本上相同或更大的写入脉冲持续时间。 随后的写入脉冲被施加到RRAM单元,直到RRAM单元处于期望的数据状态,或直到预定数量的写入脉冲已经被施加到RRAM单元为止。 还公开了一种读取方法,其中随后的读取脉冲通过RRAM单元被施加,直到读取成功或直到预定数量的读取脉冲已经被应用于RRAM单元为止。
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公开(公告)号:US20110194337A1
公开(公告)日:2011-08-11
申请号:US13091372
申请日:2011-04-21
申请人: Xiaobin Wang , Yong Lu , Haiwen Xi , Yuankai Zheng , Yiran Chen , Harry Hongyue Liu , Dimitar Dimitrov , Wei Tian , Brian Seungwhan Lee
发明人: Xiaobin Wang , Yong Lu , Haiwen Xi , Yuankai Zheng , Yiran Chen , Harry Hongyue Liu , Dimitar Dimitrov , Wei Tian , Brian Seungwhan Lee
IPC分类号: G11C11/00
CPC分类号: H01F10/329 , B82Y25/00 , G06F7/588 , G11C11/161 , G11C11/1675 , G11C11/1677 , G11C11/1693 , H01F10/3254 , H01F10/3286
摘要: A method and apparatus for writing data to a non-volatile memory cell, such as a spin-torque transfer random access memory (STRAM) memory cell. In some embodiments, a selected resistive state is written to a magnetic tunneling structure by applying a succession of indeterminate write pulses thereto until the selected resistive state is verified.
摘要翻译: 一种将数据写入非易失性存储单元的方法和装置,例如自旋转矩传递随机存取存储器(STRAM)存储单元。 在一些实施例中,通过将一系列不确定的写入脉冲施加到磁性隧道结构中来将所选择的电阻状态写入到所选择的电阻状态。
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公开(公告)号:US07936592B2
公开(公告)日:2011-05-03
申请号:US12364589
申请日:2009-02-03
申请人: Xiaobin Wang , Yong Lu , Haiwen Xi , Yuankai Zheng , Yiran Chen , Harry Hongyue Liu , Dimitar Dimitrov , Wei Tan , Brian Seungwhan Lee
发明人: Xiaobin Wang , Yong Lu , Haiwen Xi , Yuankai Zheng , Yiran Chen , Harry Hongyue Liu , Dimitar Dimitrov , Wei Tan , Brian Seungwhan Lee
IPC分类号: G11C11/00
CPC分类号: H01F10/329 , B82Y25/00 , G06F7/588 , G11C11/161 , G11C11/1675 , G11C11/1677 , G11C11/1693 , H01F10/3254 , H01F10/3286
摘要: A method and apparatus for writing data to a non-volatile memory cell, such as a spin-torque transfer random access memory (STRAM) memory cell. In some embodiments, a selected resistive state is written to a magnetic tunneling structure by applying a succession of indeterminate write pulses thereto until the selected resistive state is verified.
摘要翻译: 一种将数据写入非易失性存储单元的方法和装置,例如自旋转矩传递随机存取存储器(STRAM)存储单元。 在一些实施例中,通过将一系列不确定的写入脉冲施加到磁性隧道结构中来将所选择的电阻状态写入到所选择的电阻状态。
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