| 摘要 |
An option circuit of a semiconductor chip and a method thereof are provided to change a fuse option through an electric fuse or a soldering option after assembling a package, by selectively controlling the fuse option, the soldering option, or the electric fuse through a mode register setting option. An option circuit of a semiconductor chip is composed of a package pre-option circuit(22) programmed in a wafer test step to output a first option signal(WOP) for setting an operation mode of the semiconductor chip as a first option mode; a package post-option circuit(24) programmed in a package test step to output a second option signal(POP) for setting the operation mode of the semiconductor chip as a second option mode; and a selection circuit(26) for receiving the first and second option signals to set the final operation mode of the semiconductor chip, selecting one of the first and second option signals by external control signals(CON1,CON2), and outputting one selected option signal.
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