| 摘要 |
PROBLEM TO BE SOLVED: To suppress the whole current consumption of an input buffer as much as possible while considerably reducing the required area of the input buffer during the execution of one operation mode in a semiconductor circuit provided with plural input buffers. SOLUTION: A semiconductor integrated circuit provided with 1st and 2nd modes has plural input buffers. At least one input buffer is used for controlling the switching of each of operation modes. The input buffer IB1 for controlling the switching of each of the operation modes has a driver circuit provided with an inverter circuit 11 whose static loss current is slight. Each of remaining input buffers IB1 to IBn has a differential amplifier circuit DA, which is interrupted in the 2nd mode. The minimum current consumption of the semiconductor circuit can be suppressed by the inverter circuit 11 capable of switching the modes at high reliability even with low voltage supply.
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