| 摘要 |
<p>PROBLEM TO BE SOLVED: To improve the precision of the time of a real-time clock in a chip set. SOLUTION: The circuit and method are characterized in that the chip set 3 having the real-time clock 4 inside, a bus 2, a dedicated interface 11, a real- time clock 12 connected to the dedicated interface 11, and a CPU 1, which is connected to the bus 2 and performs program control, are provided and the time information of the real-time clock 12 is copied to the real-time clock 4 when the CPU 1 is started up.</p> |
