Abstract: By providing plural layers in which circuit components of an integrated circuit using plural voltages are arranged in accordance with used voltages, separately arranging the circuit component to which a high voltage is applied in a specific layer among the plural layers, recognizing the used voltage for each layer, and performing a layout verification by applying a condition in accordance with the used voltage, it is possible to recognize the circuit component, to which a high voltage is applied, on the layout, and to perform the layout verification using a layout rule in accordance with the used voltage using only the layers used in an actual process without newly generating a dummy layer etc.

Abstract: A wiring layout method of an integrated circuit is disclosed. Checking of wiring area ratio is performed after an automatic wiring process. For a wiring other than a grid-shaped wiring, the line width W is classified into three steps of line-width range, and a minimum space width Smin between lines in each step of line-width range is defined in advance to satisfy a condition that Wmax/(Wmax+Smin)?Pmax for a maximum line width Wmax in each step of line-width range. For grid-shaped wirings, a line width W is classified into two steps of line-width range. Further, in its upper step of line-width range, an allowable minimum area Amin (Amin?Amin0) of a metal-removed area A is defined in advance to satisfy a condition that the wiring area ratio P is less than the allowable maximum value Pmax for a maximum line width Wmax. On the other hand, in its lower step of line-width range, made is a definition that the wiring area ratio P is same as the allowable maximum value Pmax for a maximum line width Wmax.

Abstract: A wiring layout method of an integrated circuit is disclosed. Checking of wiring area ratio is performed after an automatic wiring process. For a wiring other than a grid-shaped wiring, the line width W is classified into three steps of line-width range, and a minimum space width Smin between lines in each step of line-width range is defined in advance to satisfy a condition that Wmax/(Wmax+Smin)≦Pmax for a maximum line width Wmax in each step of line-width range. For grid-shaped wirings, a line width W is classified into two steps of line-width range. Further, in its upper step of line-width range, an allowable minimum area Amin (Amin≦Amin0) of a metal-removed area A is defined in advance to satisfy a condition that the wiring area ratio P is less than the allowable maximum value Pmax for a maximum line width Wmax. On the other hand, in its lower step of line-width range, made is a definition that the wiring area ratio P is same as the allowable maximum value Pmax for a maximum line width Wmax.