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Learn the principles, concepts and design methodologies adapted to design a VLSI Chip.

What you will learn

Learn the concepts, principles of VLSI Design

Adopt different methodologies to design a VLSI Design

Draw any digital circuit only using the CMOS Technology

Know how to convert a logic design into a physical design

Description

Welcome to my course on ‘VLSI Design’. The course will help you to understand the different design methodologies, rules that are used in the field of VLSI Design.

The course essentially holds 7 different modules.

1. Fundamentals – Introduction to VLSI Design, The VLSI Design Flow,  A review on PMOS, NMOS Transistors.

2. Inverter design – CMOS, Ratioed, Resistive Load Inverters – Working, VTC, Power, Delay

3. Logic design – Complementary CMOS, Pass Transistors, Transmission Gates

4. Dynamic circuits design – Precharge, Evaluation Phases, Characteristics, Dynamic Power Consumption

5.  ALU Subsystem design – Adders, Shifters, Multipliers, Latches, Flipflops, Multiplexers and so on,


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6. Memory Design – Fundamentals, ROM Cell, RAM Cell – SRAM, DRAM

7. Layout Design – CMOS Layouts, Mead-Conway rules.

All these modules will be frequently updated with new learning contents.

Very-large-scale integration (VLSI) is the process of creating an integrated circuit (IC) by combining thousands of transistors into a single chip. VLSI began in the 1970s when complex semiconductor and communication technologies were being developed. The microprocessor is a VLSI device.

Over the past several years, Silicon CMOS technology has become the dominant fabrication process for relatively high performance and cost effective VLSI circuits. The revolutionary nature of these developments is understood by the rapid growth in which the number of transistors integrated on circuit on single chip.

References:

  • Digital Integrated Circuits, A Design Perspective by Jan M. Rabaey, Prentice Hall (1996).
English
language

Content

Fundamentals

What is VLSI ?
The VLSI Design Flow
A Review on NMOS Transistors
A Review on PMOS Transistors

Inverter Design

Complementary CMOS Inverter
VTC Curve of Inverters
Different Regions on VTC Curve of a Inverter
The critical voltages of an inverter
Pseudo NMOS Inverter
Resistive Load Inverters
Static Power Consumption of CMOS Inverters
Static Power Consumption of Resistive Load Inverters

Logic Design

Complementary CMOS Logic – Design rules
Converting any boolean function into a CMOS Circuit
The Ratioed Logic – Pseudo NMOS
Fundamentals of Pass Transistors
Converting any boolean function into a VLSI Circuit using Pass transistors
Introduction to Transmission Gates
Converting any boolean function into a VLSI Circuit using TG

Design of Dynamic Circuits

Dynamic circuits – Precharge Phase, Evaluation Phase
Characteristics of Dynamic circuits
The Dynamic Power Consumption

ALU Subsystem Design

Full adder design using Transmission Gates
Array Multiplier Design
Introduction to Latches, Bistability Principle
Static D Latch using Transmission Gates
Shifter Design
Introduction to Multiplexers
Transmission Gate Implementation of 2×1 MUX

Memory Design

Fundamentals of Memory Design
4×4 ROM Cell
Introduction to Random Access Memories
6T SRAM Cell using CMOS Inverters

Layout Design

Introduction to VLSI Layout Design
Rules of Layout Design
Mead-Conway rules, Layout of CMOS Inverter