Title :
Energy efficient addition by two-sided carry-reverse computation
Author :
Wimer, Shmuel ; Stanislavsky, Amnon ; Kolodny, Avinoam
Author_Institution :
EE Dept., Technion - Israel Inst. of Technol., Haifa, Israel
Abstract :
This paper shows how addition can be accelerated by considering the carry as being propagating from LSB and from MSB towards a midpoint. A closed form expression for the optimal midpoint is derived. The acceleration is used to reduce the energy consumed by the adder. A 64 bit adder targeting 500MHz clock frequency, designed in 65 nanometers, consumed 18% less energy and area compared to adder generated by state-of-the-art EDA synthesis tool.
Keywords :
VLSI; adders; carry logic; logic design; LSB; MSB; energy consumption reduction; energy efficient addition; frequency 500 MHz; least significant bit; most significant bits; size 65 nm; state-of-the-art EDA synthesis tool; storage capacity 64 bit; two-sided carry-reverse computation; Acceleration; Adders; Clocks; Delay; Energy efficiency; Repeaters; Very large scale integration; Adders; Low-energy; VLSI design;
Conference_Titel :
Electrical & Electronics Engineers in Israel (IEEEI), 2012 IEEE 27th Convention of
Conference_Location :
Eilat
Print_ISBN :
978-1-4673-4682-5
DOI :
10.1109/EEEI.2012.6377135
