- 专利标题: Physically unclonable function based on comparison of MTJ resistances
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申请号: US15185441申请日: 2016-06-17
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公开(公告)号: US09870811B2公开(公告)日: 2018-01-16
- 发明人: Peiyuan Wang , Jung Pill Kim , Jimmy Jianan Kan , Chando Park , Seung Kang
- 申请人: QUALCOMM Incorporated
- 申请人地址: US CA San Diego
- 专利权人: QUALCOMM Incorporated
- 当前专利权人: QUALCOMM Incorporated
- 当前专利权人地址: US CA San Diego
- 代理机构: Toler Law Group, PC.
- 主分类号: G11C11/16
- IPC分类号: G11C11/16 ; G11C17/02
摘要:
In a particular aspect, an apparatus includes a magnetic random access memory (MRAM) cell including a pair of cross coupled inverters including a first inverter and a second inverter. The first inverter includes a first transistor coupled to a first node and a second transistor coupled to the first node. The second inverter includes a third transistor coupled to a second node and a fourth transistor coupled to the second node. The MRAM cell includes a first magnetic tunnel junction (MTJ) element coupled to the second transistor and a second MTJ element coupled to the fourth transistor. The apparatus further includes a voltage initialization circuit coupled to the MRAM cell. The voltage initialization circuit is configured to substantially equalize voltages of the first node and the second node in response to an initialization signal.
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