Patent ID: 8692585

Claim:
A semiconductor integrated circuit comprising: a first output driver configured to drive a first comparison signal, which is generated by comparing a voltage of a pad coupled to an external resistor with an upper-limit reference voltage, according to drivability determined by a pull-up code and a pull-down code, and output the driven signal as first output data; and a second output driver configured to drive a second comparison signal, which is generated by comparing the voltage of the pad with a lower-limit reference voltage, according to the drivability determined by the pull-up code and the pull-down code, and output the driven signal as second output data, wherein the first output driver comprises a driving signal generation section configured to selectively buffer input data or the first comparison signal in response to a test signal and generate a pull-up driving signal and a pull-down driving signal, and a driving section configured to drive the first output data in response to the pull-up driving signal and the pull-down driving signal according to drivability determined by the pull-up code and the pull-down code.