Full Custom IC Desig..

Figure 76: Hierarchy Editor
In order to map the parasitics generated from LPE to your inverter cell, select starrc under the
“Selected” column for the inverter instance, see figure 77 for reference. The format for your
inverter instance name in the instance column is schematic_instance_name (mylibrary, inverter).
Notice that as starrc is selected, resistor and capacitor instances will show up under the instance
column, this substitution replaces the inverter cell with its equivalent schematic containing its
resistive and capacitive components. Afterwards save the settings by going to File Save.
For future reference, to apply parasitics for a general case, a schematic must have its equivalent
schematic symbol and layout created since a layout is used to generate the parasitics and a
schematic symbol is used as a vessel to hold the parasitics. The testbench schematic is created to
test the symbol containing the schematic with its applied parasitics.
San Francisco State University Nano‐electronics and Computing Research Lab 71