Invention Grant
US08027206B2 Bit line voltage control in spin transfer torque magnetoresistive random access memory
有权
自旋传输转矩磁阻随机存取存储器中的位线电压控制
- Patent Title: Bit line voltage control in spin transfer torque magnetoresistive random access memory
- Patent Title (中): 自旋传输转矩磁阻随机存取存储器中的位线电压控制
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Application No.: US12362500Application Date: 2009-01-30
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Publication No.: US08027206B2Publication Date: 2011-09-27
- Inventor: Sei Seung Yoon , Seung H. Kang
- Applicant: Sei Seung Yoon , Seung H. Kang
- Applicant Address: US CA San Diego
- Assignee: QUALCOMM Incorporated
- Current Assignee: QUALCOMM Incorporated
- Current Assignee Address: US CA San Diego
- Agent Michelle Gallardo; Nicholas J. Pauley; Jonathan T. Velasco
- Main IPC: G11C7/10
- IPC: G11C7/10

Abstract:
A Spin Transfer Torque Magnetoresistive Random Access Memory (STT-MRAM) and associated read operations are disclosed. A bit cell includes a magnetic tunnel junction (MTJ) and a word line transistor, the bit cell being coupled to a bit line and a source line. A clamping circuit is coupled to the bit line and is configured to clamp the bit line voltage to a desired voltage level during a read operation of the STT-MRAM to prevent the bit line voltage from exceeding the desired voltage level. The desired voltage level is less than a write voltage threshold associated with a write operation of the STT-MRAM.
Public/Granted literature
- US20100195376A1 BIT LINE VOLTAGE CONTROL IN SPIN TRANSFER TORQUE MAGNETORESISTIVE RANDOM ACCESS MEMORY Public/Granted day:2010-08-05
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