发明名称 |
Method of and circuit for preventing the alteration of a stored data value |
摘要 |
According to an embodiment, a method of preventing the alteration of a stored data value is disclosed. The method comprises coupling a first electronic fuse to an output control circuit; coupling a second electronic fuse to the output control circuit; decoding the states of the first electronic fuse and the second electronic fuse after a first processing step to generate a first decoded state; and decoding the states of the first electronic fuse and the second electronic fuse after a second processing step to generate a second decoded state different from the first decoded state; wherein the output control circuit maintains the second decoded state after an attempt to alter a state of an electronic fuse of the first electronic fuse and the second electronic fuse. A circuit for preventing the alteration of a stored data value is also described.
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申请公布号 |
US8502555(B1) |
申请公布日期 |
2013.08.06 |
申请号 |
US201213535610 |
申请日期 |
2012.06.28 |
申请人 |
PETERSON EDWARD S.;ANDERSON JAMES B.;WESSELKAMPER JAMES;XILINX, INC. |
发明人 |
PETERSON EDWARD S.;ANDERSON JAMES B.;WESSELKAMPER JAMES |
分类号 |
G06F11/30;H03K19/00 |
主分类号 |
G06F11/30 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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