CLOCK FREQUENCY DIVIDER

摘要

PROBLEM TO BE SOLVED: To provide a clock frequency divider that generates a frequency division clock at a duty ratio with high accuracy even when a frequency division value of any integer is set. SOLUTION: An even number/odd number discrimination section 201 discriminates whether a frequency division setting value N is an even number or an odd number. When the frequency division setting value N is an even number, a frequency division value arithmetic counter 202 frequency-divides a basic clock so that duty ratios of high/low levels of the frequency division clock are both N/2, and when the frequency division setting value N is an odd number, the frequency division value arithmetic counter 202 frequency- divides the basic clock so that one duty ratio of high/low levels is (N+1)/2 and the other is (N-1)/2.