| 摘要 |
<p>PURPOSE:To increase the speed of a peripheral circuit by generating an original oscillation clock according to the signal inputted from a clock input terminal and inputting it to the necessary peripheral circuit. CONSTITUTION:A frequency divider 102 divides the frequency of the external clock signal 101 and a waveform shaping circuit 103 generates the CPU clock. An original oscillation clock generating circuit 104, on the other hand, generates the original oscillation clock with the external clock signal and inputs it to the peripheral circuit. The peripheral circuit is enabled to operate at an operation frequency higher than a fundamental clock signal as the CPU clock.</p> |
