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US 7,924,647 B2Granted
Fuse circuit and driving method thereof
AssigneeHynix Semiconductor Inc.
InventorsKeun-Soo Song, Kwan-Weon Kim
Life of this patent
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Abstract
A fuse circuit includes a fuse unit configured to form a current path on a first node according to whether or not a fuse is cut; a driving current controller configured to control a potential level of the first node in response to a test signal; and an output unit configured to output a fuse state signal in response to the potential level of the first node.
Claims20
A fuse circuit, comprising:
- a fuse unit configured to form a current path on a first node according to whether or not a fuse is cut;
- a driving current controller configured to control a potential level of the first node in response to a test signal;
- and
- an output unit configured to output a fuse state signal in response to the potential level of the first node.
1 more element
A fuse circuit comprising:
- a fuse unit configured to form a current path on a first node whether or not a fuse is cut;
- a latching unit configured to latch the first node so as to output a fuse state signal;
- and
- a supply current controller configured to control a driving current applied to the latching unit in response to a test signal.
1 more element
A method for driving a fuse circuit, the method comprising:
- generating a test signal when a test mode is entered;
- forming a current path through a first node and a fuse;
- driving the first node in response to a test signal;
- and
- detecting a state of the fuse after buffering a potential of the first node.
2 more elements
Dependencies are inferred from the claim text.