| 摘要 |
A monitor including an integrated circuit with an operating voltage and a control unit for controlling the integrated circuit is provided. The control unit includes a driving unit, a counter, and a resetting unit. The control unit is used for sending out a command to drive the integrated circuit and receiving an acknowledge signal responded by the integrated circuit. The counter is coupled to the driving unit, and the counter value of the counter has an initial vale. The resetting unit is coupled to the counter for resetting the control unit. When the operating voltage is lower than a threshold voltage causing the integrated circuit to be shut down, the driving unit will repeatedly send out the command to drive the integrated circuit. If the driving unit drives the integrated circuit but the integrated circuit does not respond the acknowledge signal, the counter value will be increased by one. When the counter value is larger than the first value, the resetting unit will reset the control unit to restore a normal operation of the integrated circuit.
|
