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Published byAnnabel Heath Modified over 8 years ago
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An Introduction to VLSI (Very Large Scale Integrated) Circuit Design
Presented at EE1001 Nov 12th, 2015 By Hua Tang
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The First Computer
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The first electronic computer (1946)
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First Transistor (Bipolar)
Bell Labs, 1948
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The First Integrated Circuits
Bipolar logic 1960’s ECL 3-input Gate Motorola 1966
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Basic IC circuit component: MOS transistor
MOS: Metal Oxide Semiconductor
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Intel 4004 Micro-Processor
1971 1000 transistors < 1MHz operation 10μm technology
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Intel Pentium (IV) microprocessor
2001 42 Million transistors 1.5 GHz operation 0.18μm technology
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More recent Processors
2007 800 Million transistors 2 GHz operation 45nm technology 2010 Core i7 1.2 Billion transistors 3.3 GHz operation 32nm technology 2012 Core i7 (newer generations) 1.7 Billion transistors 4.0 GHz operation 22nm technology nm, then 10nm in 20xx, and then …..???
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Not Only Microprocessors
Analog Baseband Digital Baseband (DSP + MCU) Power Management Small Signal RF RF Cell Phone HDTV PDA ….
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What is a MOS Transistor?
A Switch! |V GS | An MOS Transistor
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MOS Transistors - Types and Symbols
if G=“1” or Vdd switch on G S NMOS S if G=“0” or Gnd switch on G D PMOS
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The CMOS Inverter: A First Glance
out C L DD
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CMOS Inverter First-Order DC Analysis
DD in = V =0 out V =V R n p DD
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Transient Response The delay Essentially determines the
clock speed of the processor tpLH tpHL
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Static CMOS (Complementary MOS)
VDD In1 PMOS only In2 PUN … InN F(In1,In2,…InN) In1 In2 PDN … NMOS only InN One and only one of the networks (PUN or PDN) is conducting in steady state PUN and PDN are dual logic networks
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NMOS Transistors in Series/Parallel Connection
Transistors can be thought as a switch controlled by its gate signal NMOS switch closes when switch control input is high
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PMOS Transistors in Series/Parallel Connection
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Example Gate: NAND
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Example Gate: NOR
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Full-Adder
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The Binary Adder
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Complimentary Static CMOS Full Adder
28 Transistors
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The Ripple-Carry Adder
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SRAM Memory cell
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The add-up 32-bit adder: >3,000 32-bit comparator: >3,000
32-bit multiplier: >50,000 1k SRAM: 6,000 …
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Future Design Challenges
Processor architecture (multiple-core; interconnections) Semi-conductor materials (current leakage; process variation) Power consumption (power density; thermal dissipation)
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Career in VLSI design VLSI circuit design and design automation
Intel, IBM, AMD, Texas Ins., Agilent,… Qualcomm, Broadcom, Samsung,… Micron, Seagate, WesternDigital… Cadence, Synopsys, MentorGraphics… Xilinx, Altera, …. ....
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Contact Information: Office: MWAH 276 Hour: am M, W, Th, and F Phone: Http:
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