| 摘要 |
PROBLEM TO BE SOLVED: To provide a delay time calculation method for calculating a delay time whose error is small in the delay time calculation of a logic circuit. SOLUTION: The operating characteristics of a transistor are expressed with the resistance element of a fixed value and a power supply voltage changing according to the lapse of a time. A power supply voltage is expressed with a waveform obtained by combining a straight line increasing from a fixed delay t0, and becoming V1 afterΔt1 and a straight line changing from V1 to E betweenΔt1 andΔt2, and becoming a fixed value E afterwards. The difference of the waveform shapes of an input waveform is received as a correction parameter, and the values ofΔt1, V1 andΔt2 are decided. COPYRIGHT: (C)2006,JPO&NCIPI
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