Fuse circuit and repair control circuit using the same
OwnerSung-Soo CHI, Ki-Chang Kweaninventors
Life of this patent
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Abstract
A fuse circuit includes a fuse driving unit, a separation/connection unit, a voltage equalization unit, and a latching unit. The fuse driving unit is configured to drive an output terminal in response to a fuse reset signal, depending on data programmed in a fuse. The separation/connection unit is disposed between the fuse and the output terminal and configured to separate or connect the fuse from or to the output terminal in response to a control signal. The voltage equalization unit is configured to equalize both ends of the fuse to the same voltage in response to the control signal. The latching unit is configured to latch and output the output terminal driven by the fuse driving unit.
Claims23
A fuse circuit, comprising:
- a fuse driving unit configured to drive an output terminal in response to a fuse reset signal, depending on data programmed in a fuse;
- a separation/connection unit disposed between the fuse and the output terminal and configured to separate or connect the fuse from or to the output terminal in response to a control signal;
- a voltage equalization unit configured to equalize both ends of the fuse to the same voltage in response to the control signal;
- and
- a latching unit configured to latch and output a signal of the output terminal driven by the fuse driving unit.
A repair control circuit comprising:
- a plurality of storage units each comprising a fuse circuit, and configured to latch and output address information programmed in the corresponding fuse circuit in response to a fuse reset signal and equalize both ends of the fuse to the same voltage in response to a control signal.
A method for driving a fuse circuit, comprising:
- transmitting information programmed in a fuse to an output terminal after a power-up operation;
- separating the fuse from the output terminal in response to a control signal;
- and
- equalizing both ends of the fuse to the same voltage in response to the control signal.
Dependencies are inferred from the claim text.