| 摘要 |
PROBLEM TO BE SOLVED: To provide an integrated circuit device and the like capable of preventing a malfunction caused by electrostatic discharge or the like. SOLUTION: An integrated circuit device includes an I/O circuit 20 which buffers and outputs an input signal D from a pad 18 when an enable signal ENB is set at a second voltage level, a circuit block 50 to which an output signal from the I/O circuit 20 is inputted, and a malfunction prevention circuit 30 which outputs to the circuit block 50 an output signal QP of which a voltage level is set by a 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 ENB changes from the first voltage level to the second voltage level, and outputs to the circuit block 50 the output signal QP corresponding to an output signal QI from the I/O circuit 20 in a period T3 in which the signal ENB is set at the second voltage level. COPYRIGHT: (C)2007,JPO&INPIT
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