Project help
This help is quoted from the last term's FAQ. The example shows how to construct a ring oscillator with inverters.
Through this exercise, you'll learn how to generate a symbol of a sub-circuit and how to use existing symbols to generate
a larger circuit.
Through this exercise, you'll learn how to generate a symbol of a sub-circuit and how to use existing symbols to generate
a larger circuit.
Create a symbol of an inverter
After finish your inverter schematic, attach an input and an output pin.
(Make sure that you attach VDD and GND symbols. Do not attach any voltages sources.)
Hit Design > Creat CellView > From CellView
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Locate the symbol of the inverter
The symbol for your inverter is now generated under [your library] > [your cmos inveter cell's name] > symbol
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Add instances of your inverter
Open a new schematic cell view for a ring oscillator and add instances of your symbol and connect them
to build a ring oscillator.
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Apply voltage source
Draw vdd and gnd in some empty space in the ring oscillator schematic.
Connect vdd and gnd with vdc (2.5V). Voltage source to vdd must be unique.
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