1. Four Bit ALU Presented By: Project Manager: Arturo Coronado Digital Circuit Design: Rodger Stamness Clocking:Rodger Stamness I/O:Juan Tello

2. Objective Familiarization with the full custom IC design methodology. Develop good test and debugging skills. Learn to work on a team Learn documentation procedures Have fun!!!!!!

3. Design Flow

4. Philips’s 74L181

5. Specifications Functionality: Logic and Arithmetic implementation of Philips 74L181 Frequency: 25MHz Power: 750 mW Area: 1800 X 1800

6. Chip Input & Output Circuits Design quality is a critical factor -Reliability -Signal Integrity -Interchip Communication speed ESD -Most prevalent causes for chip failures: -Manufacturing and Field Operation

7. Schimtt Trigger

8. Super Buffer

9. Padframe Floor plan

10. Functions

11. Cell-Base implementation A.O.I each function to get circuits. Each circuit is turned into a cell. Each cell builds up the ALU one cell at time; thus Bottom-Up design. Approximately 1/3 of the Design

12. Transistor Level Design

13. Cell Z1

14. Cell-Base implementation

15. Layout Cellular Design

16. Final ALU Test Bench

17. Waveform

18. Project Update Completed: -15/16 Functional Logic Blocks -DFF -Superbuffer -Schmitt Trigger To be Completed -Final Floor Plan and Verification Block -Full Layout Assembly and Test May 15, 2002