Semiconductor integrated circuit, electronic device using the same, and controlling method of semiconductor integrated circuit

Abstract

A semiconductor integrated circuit comprises a logic circuit unit, a signal control unit, a first signal selecting unit to a third signal selecting unit, and a first element electrode to a fourth element electrode. A part of signal lines of the logic circuit unit is connectable to different element electrodes, in accordance with the operating state of the logic circuit unit. The signal control unit generates connection information related to the connection of the signal lines to the element electrodes, thereafter sending the connection information to an external LSI. The connection is made after a retaining period, during which the element electrode concerned is maintained at high impedance, thereby avoiding unexpected failure. According to the present structure, the number of element electrodes required by the semiconductor integrated circuit can be reduced.