Vlsi
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VLSI Very Large Scale Integration
•ƒ Integration of (mathematical expression) dx •ƒ Integration of (Transistors and complex logic gates)
1940
Transistors invented in Bell Laboratory
1950
First IC (JK-FF by Jack Kilby at TI)
1960
Early 60s Small Scale Integration (SSI) 10 transistors on a chip Medium Scale Integration (MSI) 100s of transistors on a chip
1970
Early 70s Large Scale Integration (LSI)1000s of transistor on a chip
1980
Early 80s VLSI 10,000s of transistors on a chip (later 100,000s & now 1,000,000s)
1989
Ultra LSI is sometimes used for 1,000,000s
Generations Of VLSI Era
Date
Complexity (Number of logic blocks/chip)
Single transistor
1959
Less than 1
Unit Logic (one gate)
1960
1
Multi-function
1962
2-4
Complex Function
1964
5-20
Medium Scale Integration
1967
20-200
Large Scale Integration
1972
200-2000
Very Large Scale Integration
1978
2000-20000
Ultra Large Scale Integration
1989
20000-?
Design Flow
System Specification Functional Design
Behavioral representation
Functional Verification Logic Design
Logical representation
Logic Verification Circuit Design
Circuit representation
Circuit Verification Physical Design
Layout representation
Layout Verification Fabrication and Testing
Task
Sub-task
Sub-tasks
Sub-task
Sub-tasks
Sub-tasks
Design Hierarchy
Sub-tasks
The 4-bit adder
Simplified form to a single BIT
Concepts Of VLSI Design
VLSI Design Styles
• Field programmable gate array (FPGA) • Gate Array Design • Standard-cells based design • Full custom design
The Intel 486 Microprocessor is an example of Full-custom design.
VLSI in Today's world
VLSI in Communication
• VLSI has enabled us to use portable media tools like radio, mobile phones & PDA
• Recently INDIA launched its PSLV –polar satellite launch vehicle .This was only possible due to VLSI.
VLSI in Computers •VLSI Design system was used in the Intel 80286 processor from 1978. •All modern computers use either VLSI or its advanced versions like the ULSI (Ultra Large Scale Integration). •This has reduced the size of computers & these days we have palmtops
Future of VLSI
•Emergence of GSI (Giga-Scale Integration) and TSI (Tera-Scale Intgration)
•Use of Carbon Nano-Tubes •ULSI (Ultra Large Scale Integration) & Wafer Scale Integration and more developed versions of SoC (System on Chip).
Moore’s Law
• After every 24 months the number of transistors on a IC doubles for minimum component cost.
Gordon Moore
CONCLUSION
The vast development in the VLSI design system and its successor the ULSI will lead to a rapid growth in the electronics field.
•ƒ Integration of (mathematical expression) dx •ƒ Integration of (Transistors and complex logic gates)
1940
Transistors invented in Bell Laboratory
1950
First IC (JK-FF by Jack Kilby at TI)
1960
Early 60s Small Scale Integration (SSI) 10 transistors on a chip Medium Scale Integration (MSI) 100s of transistors on a chip
1970
Early 70s Large Scale Integration (LSI)1000s of transistor on a chip
1980
Early 80s VLSI 10,000s of transistors on a chip (later 100,000s & now 1,000,000s)
1989
Ultra LSI is sometimes used for 1,000,000s
Generations Of VLSI Era
Date
Complexity (Number of logic blocks/chip)
Single transistor
1959
Less than 1
Unit Logic (one gate)
1960
1
Multi-function
1962
2-4
Complex Function
1964
5-20
Medium Scale Integration
1967
20-200
Large Scale Integration
1972
200-2000
Very Large Scale Integration
1978
2000-20000
Ultra Large Scale Integration
1989
20000-?
Design Flow
System Specification Functional Design
Behavioral representation
Functional Verification Logic Design
Logical representation
Logic Verification Circuit Design
Circuit representation
Circuit Verification Physical Design
Layout representation
Layout Verification Fabrication and Testing
Task
Sub-task
Sub-tasks
Sub-task
Sub-tasks
Sub-tasks
Design Hierarchy
Sub-tasks
The 4-bit adder
Simplified form to a single BIT
Concepts Of VLSI Design
VLSI Design Styles
• Field programmable gate array (FPGA) • Gate Array Design • Standard-cells based design • Full custom design
The Intel 486 Microprocessor is an example of Full-custom design.
VLSI in Today's world
VLSI in Communication
• VLSI has enabled us to use portable media tools like radio, mobile phones & PDA
• Recently INDIA launched its PSLV –polar satellite launch vehicle .This was only possible due to VLSI.
VLSI in Computers •VLSI Design system was used in the Intel 80286 processor from 1978. •All modern computers use either VLSI or its advanced versions like the ULSI (Ultra Large Scale Integration). •This has reduced the size of computers & these days we have palmtops
Future of VLSI
•Emergence of GSI (Giga-Scale Integration) and TSI (Tera-Scale Intgration)
•Use of Carbon Nano-Tubes •ULSI (Ultra Large Scale Integration) & Wafer Scale Integration and more developed versions of SoC (System on Chip).
Moore’s Law
• After every 24 months the number of transistors on a IC doubles for minimum component cost.
Gordon Moore
CONCLUSION
The vast development in the VLSI design system and its successor the ULSI will lead to a rapid growth in the electronics field.
