ZERO DIFFUSION BREAK

A standard cell in a Place and Route (PNR) library of standard cells includes a cell boundary and cell configuration information. The cell boundary includes a first edge and a second edge that is opposite the first edge. The cell configuration information indicates a power connection configuration to be used with a second standard cell when the standard cell is placed next to the second standard cell in a layout in a PNR environment, such that at least one transistor source electrode is physically shared between the standard cell and the second standard cell. The cell configuration information may be edge identifier information for the first edge and/or the second edge of the first standard cell. The power connection configuration may also indicate that the power connection configuration for the first edge and/or the second edge is outside the cell boundary for the standard cell.