Pulse signal generation circuit and pulse signal generation method

摘要

A pulse signal generation circuit comprises a frequency setting register (1) which is at least (n+1) bits long for setting a value of 2 or smaller as a frequency value of a pulse signal to be generated, and a cumulative addition circuit (22) having an adder (2) and a flip-flop (3) which is at least (n+1) bits long. The cumulative addition circuit (22) repeats at a rate of 2 times per second, operations of making the adder (2) add a value set in the frequency setting register (1) to a value held in the flip-flop (3) and then making the flip-flop (3) hold the addition result, and outputs a signal having a value of (n+1)th bit in the flip-flop (3) as the pulse signal.