Pulse Width Verification Device and Pulse Width Verification Method

摘要

Conventionally, when measuring the pulse width of a received signal, when measuring a long pulse, it took a long time and it could not cope with high speed pulse communication.;Two initial count values corresponding to the minimum value and the maximum value of the predetermined range of the pulse width are stored in two registers in advance, and downcounted in the down counter 108 using these values as initial values, and then timing at which underflow occurs. And whether the pulse width of the pulse signal is within a predetermined range based on the temporal relationship between the timing at which the pulse signal to be verified and the falling time falls.