Integrated Digital Electronics Module 3B2 Lectures 1-8 Engineering Tripos Part IIA David Holburn January 2006

l 8 lectures in LT2:-  Tuesday at 12, Friday at 9 l Four handouts (roughly one per two lectures).  some gaps to be filled in  places where you need to add own notes l Two examples sheets:-  MOS circuits (lecture 4)  Bipolar circuits (lecture 8) l Various other notes, graphs and leaflets l Material on the WWW 3B2 Integrated Digital Electronics

3B2 Material on the Web

l There’s a link to an HTML version of this presentation. l Point your browser at :

Spice Simulator

Related courses l Related activities in the 3rd year  Module 3B2 – Integrated Digital Electronics – Logic (Dr Udrea)  Module 3B5 – Semiconductor Devices  Computer-Based Project C7 - VLSI design (Easter term) l Related modules in the 4th year  Module 4B2 - Power Electronics and Applications  Module 4B6 - Solid State Devices  Module 4B7 - VLSI Design & Technology  Module 4B8 - Electronic System Design

Evolution of the Microprocessor Module 3B2: Integrated Digital Electronics Engineering Tripos Part IIA

The First Transistor New York Times “ A device called a transistor, which has several applications in radio where a vacuum tube ordinarily is employed, was demonstrated for the first time yesterday at Bell Telephone Laboratories, 463 West Street, where it was invented.” 23rd December

The First Integrated Circuit 1958, Jack Kilby, a young electrical engineer at Texas Instruments, figured out how to put all the circuit elements - transistors, resistors, and capacitors, along with their interconnecting wiring - into a single piece of germanium. His rough prototype was a thin piece of germanium about one-half inch long containing five separate components linked together by tiny wires.

The Microprocessor 4004: Intel’s first microprocessor The speed of this 1971 device is estimated at 0.06 MIPS. By comparison, Intel's new P6 runs at 133 MHz, contains 5.5 million transistors, and executes 300 MIPS (million instructions/s). The 4-bit 4004 ran at 108 kHz & contained 2300 transistors.

Intel 8086/8088 and IBM PC 1978: 8086/8088 Microprocessor A pivotal sale to IBM’s new personal computer division made the 8088 the brains of IBM’s new ‘hit product’ -- the IBM PC. This was followed in 1982 by the 80286, on which was based the IBM PC/AT (Advanced Technology) computer.

Intel and The Intel ‘386 (1985) contained 275,000 transistors. It was Intel’s first ‘32-bit’ chip, and was capable of ‘multi-tasking’. The ‘486 (1989, shown) was significantly more powerful, and was the first to offer a built-in math. co-processor, greatly speeding up transcendental functions.

Intel Pentium The Pentium was first introduced in 1993; it was designed to allow computers to handle “real-world” data, e.g. speech, sound & images. The Pentium II (1997) contained 7.5 million transistors and is packaged in a unique format - SEC or Single Edge Contact.

Scaling - Intel Pentium Original design used MOSFETs with L=0.8  m  Speed limited to f clk = 66 MHz Shrink minimum dimension to 0.6  m  Raise clock to 100 MHz - 50% more throughput  Lower power consumption  Latest P4 uses L=0.09  m  f clk =3800MHz !! Relative sizes

Intel Pentium IV l Introduced late 2000 l > 42  10 6 transistors l 217 mm 2 chip area l Initially 0.18  m process l 75 2GHz l Now 0.09  m Si process l 3.8 GHz max clock freq.

Moore’s Law l Gordon Moore forecast exponential growth in the IC industry l.. so far his prediction has been stunningly accurate l.. the billion transistor IC is just over the horizon!

Moore’s Law 1. Chip complexity doubles every process generation 2. Factory cost doubles every factory generation Complexity Pentium ® Pentium ® Pentium ® Pro $5000 $2000 $500 $200 Cost in $M cost complexity

Silicon Technology Intel386™ DX Processor1.5µ 1.0µ 1.0µ 0.8µ 0.8µ 0.6µ 0.6µ 0.4µ 0.4µ 0.25µ 0.25µ Silicon Process Technology Intel486™ DX Processor Pentium ® Processor Pentium ® II Processor

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