| 摘要 |
PROBLEM TO BE SOLVED: To provide a circuit simulation method that can easily and accurately analyze an analog/digital mixed circuit with respect to all the circuit nets wherever they may be in consideration of the effect of chattering such as noise generated in the circuit or incoming noise. SOLUTION: In a simulated analog/digital mixed circuit, an AD conversion element 104 having a chattering generation circuit 102 for generating chattering is inserted in a net part connecting an analog circuit 111 and a digital circuit 112, and the chattering generated by the AD conversion element 104 is added to the signal waveform of an analog signal 121 at specified frequencies or generation timings when the analog signal 121 crosses a predetermined threshold. COPYRIGHT: (C)2007,JPO&INPIT
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