Patent ID: 6920403
Filing Date: 2005-07-19
Classification: G06F

Abstract:
1. A power supply voltage fluctuation analyzing method which performs power supply voltage fluctuation analyzing for a semiconductor product that includes a plurality of function cells, each of said function cells having at least one first common power supply line and at least first and second current sources, each of said first and second current sources being spaced apart from each other and flowing first and second currents therethrough via said first common power supply line, the method comprising: preparing an input library for each of said plurality of function cells, said input library including first and second position information, said first position information being indicative of a first position of a first current source with respect to said first common power supply line, said second position information being indicative of a second position of a second current source with respect to said first common power supply line, said input library further including current ratio information indicative of a ratio in current between said first and second current sources; determining a power consumption distribution in each of said function cells of said semiconductor product by using said first and second position information and said current ratio information of said input library; and allocating power consumption to each of said function cells.