DEVICE FOR DETECTING TIMING ERROR

摘要

PURPOSE: A timing error detector is provided which inspects a reference cell before designing of a circuit or circuits already designed to reduce a period of time required for inspecting circuits during design process. CONSTITUTION: A multiplexer(4) receives an input signal and a sampling signal to multiplex the signals. A circuit(1) to be inspected receives the multiplexed signal from the multiplexer to perform a predetermined operation according to the received signal. A timing specification part(2) has a predetermined timing specification according to the input signal. A comparator(3) receives a timing signal from the circuit and timing signal from the timing specification part to compare the timing signals to detect a difference. A recovering unit(5) receives the detection signal to recover the original timing signals when the detection signal of the comparator fails. A sampling-counter(6) accepts the signal from the recovering unit to sample and count the signal according to the detection signal.