lec5 - ECE 3060 VLSI and Advanced Digital Design Lecture 5...

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ECE 3060 VLSI and Advanced Digital Design Lecture 5 Complex Gates
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ECE 3060 Lecture 5–2 Example: NAND Gate (Vertical)
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ECE 3060 Lecture 5–3 Example: NAND Gate (Horizontal)
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A B OUT VDD GND V DD A B Example: NOR Gate (Horizontal) OUT
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ECE 3060 Lecture 5–4 Other Gates And Or Invert (AOI) Or And Invert (OAI) XOR XNOR
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ECE 3060 Lecture 5–5 Complex Gates The gate “function” does not need to be primitive, or symmetric Any may be implemented Algorithm: 1. put in form with only AND, OR, and literals (use DeMorgans). 2. compute using generalized DeMorgan’s Theorem 3. construct complimentary networks using transistors in series for AND, and transistors in parallel for OR Note: There are many correct networks due to commu- tivity f x () f x f
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ECE 3060 Lecture 5–6 Euler Paths Mapping CMOS Circuits to Graphs Circuit Nodes Map to Graph Vertices Transistors Map to Graph Edges Complementary Circuit Networks Map to Dual Graphs A C A B C B Out V dd Gnd Out A B C
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ECE 3060 Lecture 5–7
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lec5 - ECE 3060 VLSI and Advanced Digital Design Lecture 5...

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