Download - 1 8 Bit Gray Code Converter Rasha Shaba Hala Shaba Kai Homidi Advisor: David Parent DATE 12/06/04
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Agenda
• Abstract• Introduction
– Why– Simple Theory– Back Ground information
• Project (Experimental) Details• Verifications of Results• Lessons Learned• Summary
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Abstract
• We designed an 8-bit gray code converter according to the following specifications.
Frequency: 200 MHz. Power: <25mW Area: <800mx800m
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Introduction• We chose a gray code converter for our project
because It is applied in a broad range of applications It incorporates all principles taught in
EE-166
• The basic theory of our project is to convert a series of binary numbers to gray code numbers with the use of XOR gates
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Project Details
• The Gray Code Converter consists of the following:NAND gatesXOR gatesD Flip Flops
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Longest Path CalculationsLogic Level
Gate Cg to Drive
#CDNs #CDPs #LNs #LPs WN (H.C)
WP (H.C)
WN (S)
WP (S)
WN (L)
WP (L)
Cg of gate
1 NAND3 20 5 3 3 1 1.10 0.63 1.5 1.5 1.5 1.5 5.10 2 NAND3 5.10 5 3 3 1 0.54 0.31 1.5 1.5 1.5 1.5 5.10 3 INV 5.10 1 1 1 1 0.07 0.10 1.5 1.5 1.5 1.5 5.10 4 NOR 5.10 4 6 2 2 0.49 0.83 1.5 1.5 1.5 1.5 5.10 5 NOR 5.10 4 6 2 2 0.49 0.83 1.5 1.5 1.5 1.5 5.10 6 INV 5.10 1 1 1 1 0.07 0.10 1.5 1.5 1.5 1.5 5.10 7 NAND3 5.10 5 3 3 1 0.54 0.31 1.5 1.5 1.5 1.5 5.10 8 NAND3 5.10 5 3 3 1 0.54 0.31 1.5 1.5 1.5 1.5 5.10
nsns
PHL 625.8
5 Note: All widths are in microns
and capacitances in fF
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Gray Code Converter Schematic
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Lessons Learned
• Advice to EE-166 students:Start earlyConsult with Professor Parent in office hoursPay attention to lectureThink of the project as a learning experience
• Advice to EE-166 professors:Narrow down class notes to more useful
examples
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Summary
• The gray code converter project was worthwhile because it firmly illustrated the principles taught in EE-166 course
• The main results of the project are the following Timing specifications were met The basic principles of design and layout of CMOS
technology were learned
• Gray code converters will continue to be a main components in may systems to come