STICK DIAGRAM EMT251. Schematic vs Layout In Out V DD GND Inverter circuit.

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Presentation transcript:

STICK DIAGRAM EMT251

Schematic vs Layout In Out V DD GND Inverter circuit

Schematic vs Layout A Out V DD GND B 2-input NAND gate

Stick Diagram A stick diagram is a graphical view of a layout. Does not show exact placement, transistor sizes, wire lengths, wire widths, tub boundaries.

Stick Diagram Represents relative positions of transistors Stick diagrams help plan layout quickly  Need not be to scale  Draw with color pencils or dry-erase markers In Out V DD GND Inverter A Out V DD GND B NAND2

Stick Diagram Metal (BLUE) Polysilicion (RED) N-Diffusion (Green) P-Diffusion (Brown) Contact / Via Layers

Figure 1: Schematic and Graph

Figure 2: Euler Path

Figure 3: Connection label layout 1 2

Figure 4: VDD, VSS and Output Labels 1 2

Figure 5: Stick Diagram, Interconnected Reference: Chapter 4, Appendix C, Digital Integrated Circuits, Jan M. Rabaey 1 2

Exercise 1 A B C Logic Gate A X = C (A + B) B A C C B i j

Solution: Stick Diagram of C (A + B) ABC X V DD GND

Exercise 2 A B C D X = (A+B)(C+D) D C C AB B A D Logic Gate

Thank you