8 Bits Gray Code Converter

By: Dawei Kou

Flora Wu

Linda Htay

Specification

• 8 bits Gray Code Converter converts regular binary number to Gray code number

• Clock frequency = 200 MHz

• Power < 250mW@200MHz

• No Metal 2

Design Method

• 3 bits and 4 bits Gray Code Converter by K-map

• Verify 8 bits input and 8 bits output in excel

• Design XOR and DFF

XOR Schematic

XOR Layout

XOR LVS

XOR Post Extracted Simulation

Time Delay

Nand Schematic

Nand Layout

Nand LVS Report

Nand Post Extracted Stimulation

DFF Schematic

DFF Layout

DFF LVS Report

DFF Post Extracted Stimulation

Gray Code Converter Schematic

DFFXOR

Gray Code Converter Cell

DFF

XOR

Gray Code Converter Layout

Gray Code Converter LVS

Post Extracted Simulation, Input

Post Extracted Simulation, Output

Conclusion

• 8 bits Gray Code Converter

• Clock frequency = 200 MHz

• Power = 11.6mW@200MHz

• Total Area = 103 * 470 um2

• No Metal 2