| 摘要 |
PURPOSE:To raise a strobe signal in a time other than the noise generation time, by performing simulation with a waveform where indefinite value of an input are inserted in both sides of the switching time of the input pattern. CONSTITUTION:Patterns including indefintite values of a time width corresponding to variances among test input pins 1, 4, and 5 are inputted to test pattern inputs (a), (b), and (c) at the switching time of a pattern to perform a simulation; and if indefinite values are propagated in a gate, the time of noise generation due to the time difference among input pins 1, 4, and 5 and the variance of the threshold of the gate is detected at the test data generation time. As the result, a strobe signal is raised at a time other than the noise generation time. |
