{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

HW1-Solution

# HW1-Solution - ≈ 20 billion Clock speed estimation based...

This preview shows pages 1–2. Sign up to view the full content.

EL 5473 Introduction to VLSI Design Homework Assignment 1 Solution 1. Explain what is Moore’s Law. Based on the evolutionary trends described in chapter 1, predict the integration complexity and the clock speed of a microprocessor in the year 2020. Answer: Page 4 in text, Moore observed in 1965 that plotting the number of transistors that can be most economically manufactured on a chip gives a straight line on a semi-logarithmic scale. At the time he found transistor count doubling every 18 months. Intel microprocessors have double transistor number every 26 months (~2 years). Integration complexity estimation: based on Fig 1.4 in text, transistor # is ~ 20 million in 2000. Transistor # doubles every 2 years. Then transistor # in 2020 will be 20 million * 2^ (20 years /2 years) = 20 million*2^10

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: ≈ 20 billion. Clock speed estimation: based on Fig. 1.5 in text, clock freq. in 2000 was close to 1GHz. Clock frequency doubles every 34 months. Then clock frequency in 2020 will be 1GHz * 2^(12*20 months / 34 months) ≈ 1GHz*2^7 ≈ 128GHz. 2. (Problem 1.3 in text) Sketch a transistor-level schematic for a CMOS 4-input NOR gate. VDD OUT A B C D 3. (Problem 1.6 in text) Sketch a transistor-level schematic of a CMOS 3-inpt XOR gate. You may assume you have both true and complementary versions of the inputs available. 4. Draw layout and cross-section for a PMOS transistor in an n-well process that has active, p-select, n-select, polysilicon, contact, and metal 1 masks. Include the well contact to VDD. V DD Y A well tap pMOS transistor p+ n well Y V DD n+ well tap p+...
View Full Document

{[ snackBarMessage ]}

### Page1 / 2

HW1-Solution - ≈ 20 billion Clock speed estimation based...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online