Integrated circuit having a filler standard cell

摘要

An integrated circuit includes a functional block having a plurality of standard cells. The plurality of standard cells includes a plurality of functional standard cells and a filler standard cell. Each functional standard cell of the plurality of functional standard cells has a rectangular boundary. The filler standard cell has a rectangular boundary adjacent to at least one of the functional standard cells. The filler standard cell is selectable between a first state and a second state. The filler standard cell is non-functional in the first state. The filler standard cell has functional test structures coupled to a first metal layer in the second state. This allows for test structures helpful in analyzing functionality of circuit features such as transistors without requiring additional space on the integrated circuit.