To provide a pulse generation circuit that allows an easy and accurate adjustment of pulse width and generates a pulse signal asynchronously with a system clock.

The pulse generation circuit includes: a constant current source 32 for generating a current of a predetermined current value; a capacitor 36 electrically charged by the current from the constant current source 32; and a comparator 40 for outputting a pulse signal according to the result of comparison of a voltage 130 based on the electrical charge to the capacitor 36 with a reference voltage 42 having a predetermined voltage value V_R. A pull-up transistor 44 is provided to pull up an output terminal of the comparator to a high potential side supply potential.