EELE 414 – Introduction to VLSI Design
Homework #13
Name:
Grade:
__________________________
_____ /20
You are going to design a combinational logic circuit using a Full Custom AOI/OAI approach. Your circuit should
implement the truth table given below.
ABC
0 0 0
0 0 1
0 1 0
0 1 1
1 0 0
1 0 1
1 1 0
1 1 1
|
|
|
|
|
|
|
|
|
F
0
1
0
0
1
1
0
0
You will need to enter your entire circuit into S-edit and perform a functional SPICE simulation to verify its
operation. You will then need to layout your entire circuit and successfully pass DRC & LVS.
Hint 1: After finding the minimized Logic expression, you’ll need to manipulate it into a format that is suitable for
AOI/OAI synthesis. It might be useful to perform a double inversion on your logic expression.
Deliverables:
a)
Provide an S-edit transistor level schematic showing your logic circuit and your work for creating the
CMOS circuit (i.e., logic manipulation, dual pull-up/down graphs, etc..).
(4 Points)
b) Provide a simulation waveform verifying your circuit behaves as intended. Again use 3 different pulse
voltage sources to generate all possible input codes (000-001-010….111). You should create a symbol for
your circuit with 3 inputs and 1 output. Within your symbol will be a large transistor level schematic. If
you do it this way, you can leverage your top level test schematic from last week.
(4 Points)
c)
Turn in a printout of your entire L-edit layout.
(4 Points)
d) Turn in a screenshot showing a successfully DRC.
(4 Points)
e)
Turn in a screenshot showing a successfully LVS.
(4 Points)