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Stick Diagram & Boolean Function

This document discusses stick diagrams and Boolean functions for a lab assignment on implementing AND and OR gates using CMOS transistors. Students are asked to submit the transistor-level circuit, layout, and simulations for the gates in the next lab. The document provides information on stick diagrams, including color coding, rules, and examples of stick diagrams for a CMOS inverter and NOR gate. It also discusses implementing Boolean functions using individual CMOS inverters versus a layout approach.

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Syed Abdullah Hasan Chishti
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256 views17 pages

Stick Diagram & Boolean Function

This document discusses stick diagrams and Boolean functions for a lab assignment on implementing AND and OR gates using CMOS transistors. Students are asked to submit the transistor-level circuit, layout, and simulations for the gates in the next lab. The document provides information on stick diagrams, including color coding, rules, and examples of stick diagrams for a CMOS inverter and NOR gate. It also discusses implementing Boolean functions using individual CMOS inverters versus a layout approach.

Uploaded by

Syed Abdullah Hasan Chishti
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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LAB # 4

STICK DIAGRAM & BOOLEAN FUNCTION


ASSIGNMENT # 2

Implement AND & OR Gate Using CMOS


Transistors
(Transistor level circuit, Layout, Simulations)

SUBMISSION IN NEXT LAB !!!

Lab Engr : Sara Nawaz


STICK DIAGRAM

Lab Engr : Sara Nawaz


Stick Diagram
Acts as an interface between transistor level circuit
and the actual layout
Useful for planning layout
Stick diagrams convey layer information through
color codes
Does show all components/contacts
Does not show exact placement of components,
transistor sizes, wire lengths, wire widths etc

Lab Engr : Sara Nawaz


Lab Engr : Sara Nawaz
Stick Diagram Notation (Color Coding)

Lab Engr : Sara Nawaz


Stick Diagram Rules
Rule # 1

When STICKS of same type touch or cross each other that


represents an electrical contact

Lab Engr : Sara Nawaz


Rule # 2

When two or more sticks of different type cross or touch each


other there is no electrical contact
If electrical contact is needed we have to show the connection
explicitly

Lab Engr : Sara Nawaz


Rule # 3

When a poly crosses diffusion it represents a transistor


If a contact is shown then it is not a transistor

Lab Engr : Sara Nawaz


Rule # 4

Avoid touching of p-diff with n-diff


All PMOS must lie on one side and all NMOS will have to be
on the other side

Lab Engr : Sara Nawaz


Stick Diagrams Of CMOS Inverter

1. 2.

Lab Engr : Sara Nawaz


Stick Diagrams Of CMOS NOR
Gate

Lab Engr : Sara Nawaz


BOOLEAN FUNCTION

Lab Engr : Sara Nawaz


Problems In Implementing Boolean Function Using
Individual CMOS Inverters

Complex

Area

Redundancy

Overlapping of Metals

Lab Engr : Sara Nawaz


Layout Using Individual Inverters

Lab Engr : Sara Nawaz


Layout

Lab Engr : Sara Nawaz


Implement Layout Of Given Boolean
Function

Lab Engr : Sara Nawaz

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