| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an interface circuit capable of reducing power consumption at the time of low power consumption when data communication is not performed. <P>SOLUTION: A switching power supply circuit 10 is provided to stabilize the voltage level of a VBUS terminal 1 to 0V and 5V, a change detecting part 13 is configured so as to be able to detect the rise or the fall of a signal from the VBUS terminal 1 and an ID terminal 2 without using a clock signal from an oscillation circuit 6, and the operation of the oscillation circuit 6 is stopped at the time of low power consumption. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
