1. Institute of Applied Microelectronics and Computer Engineering College of Computer Science and Electrical Engineering, University of Rostock Spezielle Anwendungen des VLSI-Entwurfs Special applications of VLSI design Low ( -est! ) Power Adder Andreas Tockhorn, Hagen Sämrow Course and contest 2005

2. Institute of Applied Microelectronics and Computer Engineering College of Computer Science and Electrical Engineering, University of Rostock Spezielle Anwendungen des VLSI-Entwurfs Special applications of VLSI design Inhalt 1.Vorüberlegung 2.Prinzip 3.Implementation 4.Ergebnisse

3. Institute of Applied Microelectronics and Computer Engineering College of Computer Science and Electrical Engineering, University of Rostock Spezielle Anwendungen des VLSI-Entwurfs Special applications of VLSI design Vorüberlegung - Idee: kleine Fläche ( wenig Verdrahtung, wenig Transistoren ) => Low Power =>Ripple Carry Adder - RCA Carry Skip Adder - CSKA

4. Institute of Applied Microelectronics and Computer Engineering College of Computer Science and Electrical Engineering, University of Rostock Spezielle Anwendungen des VLSI-Entwurfs Special applications of VLSI design Prinzip RCA - CSKA RCA: CSKA:

5. Institute of Applied Microelectronics and Computer Engineering College of Computer Science and Electrical Engineering, University of Rostock Spezielle Anwendungen des VLSI-Entwurfs Special applications of VLSI design Implementation Version1: Verdrahtung von Komponenten bis in die Ebene der Voll- und Halbaddierer Version2: Verwendung von Prozessen

6. Institute of Applied Microelectronics and Computer Engineering College of Computer Science and Electrical Engineering, University of Rostock Spezielle Anwendungen des VLSI-Entwurfs Special applications of VLSI design Ergebnisse DesignVersionMax. Frequenz /MHzLogik - Power /mW Power – Delay /pJ RCA1100,166,2362,20 CSKA 2bit1212 98,04 100,16 6,36 4,77 64,87 47,62 CSKA 4bit1212 88,43 60,11 9,22 6,46 104,26 107,47 CSKA 8bit1212 76,01 5,95 5,51 78,28 72,49 CSKA 4bit mit CLA 188,439,22104,26 CSKA variabel 1-2-3-4-5-6-5-3-2-1 168,416,6797,50 CSKA variabel 2-2-3-3-4-4-4-3-3-2-2 164,826.64102,44 Vorgabe197,003.2916,70