What This Document Is
This document outlines the requirements for Phase II of a larger term project within an introductory digital integrated circuits course (ELENG 141) at the University of California, Berkeley. It serves as a detailed assignment specification, guiding students through the design and implementation of a fundamental building block in digital systems. It details the expectations for a practical, hands-on project involving both schematic design and physical layout of an integrated circuit.
Why This Document Matters
This assignment is crucial for students enrolled in the course who are seeking to solidify their understanding of digital logic design principles. It’s particularly valuable for those preparing to move onto more complex circuit topologies and optimization techniques in subsequent phases of the project. Students will benefit from carefully reviewing this document *before* beginning their design work to ensure they fully grasp the project goals and constraints. It’s essential for successful completion of the project and demonstrates practical application of theoretical concepts.
Topics Covered
* Adder Architectures (specifically ripple-carry)
* Combinational Logic Design
* Full and Half Adder Implementation
* Static Logic Gates (NAND, NOR, XOR, XNOR, INV)
* Schematic Capture and Layout Design
* Verification and Analysis (LVS/DRC)
* Circuit Delay and Performance Considerations
* Input Capacitance and its impact on design
What This Document Provides
* A clear description of the project goal: designing a 5-bit adder with a 6-bit output.
* Specifications for input and output signals and their relationships.
* A library of standard cells available for use in the design.
* Logical equations for half and full adders.
* Guidance on utilizing a provided SPICE deck for exhaustive circuit verification.
* Instructions regarding capacitive loading for accurate analysis and simulation.
* Information on how to approach delay analysis and identify critical paths within the adder circuit.
