| 摘要 |
PROBLEM TO BE SOLVED: To provide USB(universal serial bus) equipment, which can be automatically reset when a power source is turned on, in the case of a runaway or when a reset (RESET) state is detected on a USB line, and is excellent in reliability and operability. SOLUTION: This equipment is composed of a one-chip microcomputer 2, a USB interface 3, reset circuit 4 provided with a voltage monitoring circuit 5, a watchdog timer 6, a USB line monitoring circuit 7, and a key matrix 8. |
