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
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
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
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:
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
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 2bit ,04 100,16 6,36 4,77 64,87 47,62 CSKA 4bit ,43 60,11 9,22 6,46 104,26 107,47 CSKA 8bit ,01 5,95 5,51 78,28 72,49 CSKA 4bit mit CLA 188,439,22104,26 CSKA variabel ,416,6797,50 CSKA variabel , ,44 Vorgabe197, ,70