Fuse circuit and layout designing method thereof

An apparatus comprising:

• a fuse program control unit configured to provide a fuse open voltage in response to a program signal;
• a fuse cell unit configured to use a via resistor connecting a node supplied with the fuse open voltage and a node supplied with a fuse connection voltage as a fuse, the fuse cell unit outputting state information of the via resistor in response to the fuse open voltage;
• and
• a fuse sensing unit configured to output a fuse data signal corresponding to the state information of the via resistor in response to a read signal.

A method comprising:

• forming an active region in a semiconductor;
• forming a first line for supplying a fuse open voltage and a second line for supplying a fuse connection voltage on the active region;
• forming a first contact as a fuse between the active region and the first line;
• and
• forming a second contact between the active region and the second line,
• wherein information for sensing a state of the fuse is outputted through the first line.

A method comprising:

• forming a first line for supplying a fuse open voltage and a second line for supplying a fuse connection voltage in a semiconductor device;
• and
• forming a via as a fuse between the first line and the second line,
• wherein information for sensing a state of the fuse is outputted through the first line.