| 摘要 |
<p>PURPOSE:To obtain the timer-incorporated device from which time information can accurately be grasped for a long time even after a power failure. CONSTITUTION:This device is equipped with a clock generating circuit 1 which generates a clock signal G to a microcomputer 100, clock generating circuits 2 and 3 which generates a clock signal F, a time data updating means 114 which updates time data 14a according to the clock signal F, and a counter circuit 9. If a power failure occurs, the counter circuit 9 is reset and during the power failure, the clock generating circuits 2 and 3 and counter circuit 9 are supplied with the electric power from a capacitor C1, and the counter circuit 9 counts the clock signal F and at the end of the power failure, the time data 14a are updated according to the count value of the counter circuit.</p> |
