Semiconductor device and method for designing a semiconductor device

A semiconductor device design method performed in a semiconductor design apparatus including a processor, the method comprising:

• computing, under control of the processor, a consumption current in a macro cell region in a semiconductor device based on a virtual-model-based simulation of an operation of the semiconductor device;
• defining, under control of the processor, a first region as having a first shape and size on an upper surface on at least one end of a one-side end portion of the macro cell region based on the consumption current in the macro cell region and an allowable current per via that connects a power supply layer and the macro cell region in the semiconductor device to each other;
• defining, under control of the processor, a second region as having a second shape and size on the upper surface of the macro cell region based on the first region;
• determining, under control of the processor, an arrangement of the macro cell region and the power supply layer in the semiconductor device based on the second region;
• determining, under control of the processor, an arrangement of vias in the second region based on the arrangement of the macro cell region and the power supply layer;
• and
• producing the semiconductor device based on the resulting arrangements of the macro cell region, power supply layer, and vias.