Verilog HDL Example Instantiation
DFF <instance_name> (.d(<input_wire>), .clk(<input_wire>),
.clrn(<input_wire>), .prn(<input_wire>), .q(<output_wire>));
DFF <instance_name> (.d(<input_wire>), .clk(<input_wire>),
.clrn(<input_wire>), .prn(<input_wire>), .q(<output_wire>));