| 摘要 |
PROBLEM TO BE SOLVED: To extend the wait time with one charging of a battery by setting a microcomputer to the stop state when there is no interrupt handling. SOLUTION: A microcomputer 11 enters the stop state after acquisition of a control channel of a receiver 12, securing data synchronization, time setting of a hard-wave timer, etc., and is set to the wait state for interrupt signals from the hardware timer 110 and other circuits and starts the activity again in receiving an interrupt signal to execute the processing corresponding to the interrupt signal. That is, the microcomputer 11 controls operations of the receiver 12 and a display part 17 to receive and check the interrupt signals or information from a field intensity detector 13, a reception data synchronization detector 14 with an interrupt signal generation circuit, a reception data storage register 15 with an interrupt signal generation circuit, an operation button part 16 with an interrupt signal generation circuit, a battery voltage detector 18, the hardware timer 110, etc., and executes required processings. |
