Data Sheet

Schematic Capture
77
terminals with the correct names. If you are in any doubt regarding power nets and
connections please see the section earlier in the document on powering the circuit
or consult the reference manual.
Click on the Add Pin button underneath the grid, type VSS to name the pin and then repeat the
process for the VDD pin. Remember that connections to these virtual pins are made according
to their name so make sure that you name them correctly.
Adding a virtual pin
Having created the pins we assign them to pads on the footprint as follows:
Click in the column at the far right of the VSS pin.
Click on the corresponding pad on the footprint (pad 9).
The cursor will move down to the next pin (VDD) so all we need to do is click on pad 18
on the preview.
Clicking on pads will assign the pin