| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a real time clock which improves the reliability of stored event data. <P>SOLUTION: The real time clock 10 is provided with; an event detection circuit 20 which detects that event detection signals are input from the outside; a time measuring circuit 18 which generates time data on the basis of signals output from an oscillation circuit 16; a memory 40; and a control circuit 42 which records event data to the memory 40 when the input of the event detection signals is detected by the event detection circuit 20, the event data having additional data, which indicate the operational condition of the real time clock 10, and the time data generated by the time measuring circuit 18. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
