| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a clock generation circuit capable of generating a clock signal of which the frequency is fluctuated at all times, in simple circuit configuration. <P>SOLUTION: The clock generation circuit includes: a ring oscillator 11 in which an odd-number of inverters inv1-invN connected in series are included, the output of the final-stage inverter invN is input to the first-stage inverter inv1 and a clock signal is generated and output; a frequency divider circuit 12 in which the clock signal output from the ring oscillator 11 is given, frequency-divided and output; and a heater 14 which is on-off controlled according to the output of the frequency divider circuit 12 and heats the ring oscillator 11 during ON. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
