Method for Automatically Routing Multi-Voltage Multi-Pitch Metal Lines

A method for program routing a circuit with at least a first and second voltages in a metal layer, the first voltage being higher than the second voltage, the method comprising:

• defining a first and second layer types corresponding to the first and second voltages, respectively;
• specifying at least one first attribute for the first layer type and at least one second attribute for the second layer type;
• specifying at least one first net in a description of the circuit with a first voltage and at least one second net of the same description of the circuit with a second voltage;
• reading the voltage information associated with the at least one first net and the at least one second net by a computer program;
• routing at least one first polygon for the at least one first net onto the first layer type with the at least one first attribute by the computer program;
• routing at least one second polygon for the at least one second net onto the second layer type with the at least one second attribute by the same computer program
• defining the first layer type with the corresponding at least one first attribute in a design rule check (DRC) input deck;
• defining the second layer type with the corresponding at least one second attribute in the same DRC input deck;
• and
• verifying the at least one first polygon and the at least one second polygon according to the DRC input deck.

A method for program routing a circuit with at least a first and second voltages in a metal layer, the first voltage being higher than the second voltage, the method comprising:

• defining a first and second layer types corresponding to the first and second voltages, respectively;
• specifying a first space attribute for the first layer type and a second space attribute for the second layer type;
• specifying at least one first net in a description of the circuit with a first voltage and at least one second net of the same description of the circuit with a second voltage;
• reading the voltage information associated with the at least one first net and the at least one second net by a computer program;
• routing at least one first polygon for the at least one first net onto the first layer type with the first space attribute by the computer program;
• and
• routing at least one second polygon for the at least one second net onto the second layer type with the second space attribute by the same computer program except when the at least one second polygon being adjacent to the at least one first polygon, in which case, routing the at least one second polygon with the first space attribute instead.