| 摘要 |
An integrated circuit device includes an I/O circuit which buffers and outputs an input signal D from a pad when an enable signal ENB is set at a second voltage level, a circuit block to which an output signal from the I/O circuit is input, and a malfunction prevention circuit which outputs to the circuit block an output signal QP of which a voltage level is set by a first power supply VDDC in a period T1 in which the signal ENB is set at a first voltage level and a period T2 including a period in which the signal ENB changes from the first voltage level to the second voltage level, and outputs to the circuit block the output signal QP corresponding to an output signal QI from the I/O circuit in a period T3 in which the signal ENB is set at the second voltage level. |
