Title :
VTH-hopping scheme for 82% power saving in low-voltage processors
Author :
Nose, Koichi ; Hirabayashi, Masayuki ; Kawaguchi, Hiroshi ; Lee, Seongsoo ; Sakurai, Takayasu
Author_Institution :
Inst. of Ind. Sci., Tokyo Univ., Japan
Abstract :
A threshold voltage hopping (VTH-hopping) scheme is proposed where VTH is dynamically controlled through software depending on a workload. VTH-hopping is shown to reduce the power to 18% of the fixed low-VTH circuits in 0.5 V supply voltage regime for multimedia applications. A positive back-gate bias scheme within VTH-hopping is presented for the high-performance and low-voltage processors. The measurement result shows about 90% leakage power reduction is possible by using VTH -hopping
Keywords :
CMOS digital integrated circuits; VLSI; low-power electronics; microprocessor chips; reduced instruction set computing; 0.5 V; LV processors; RISC processor; VTH-hopping scheme; dynamically controlled threshold voltage; fixed low-VTH circuits; leakage power reduction; low-voltage processors; multimedia applications; positive back-gate bias scheme; power saving; threshold voltage hopping scheme; Clocks; Encoding; Frequency; MPEG 4 Standard; Power control; Power dissipation; Signal processing; Testing; Video coding; Voltage control;
Conference_Titel :
Custom Integrated Circuits, 2001, IEEE Conference on.
Conference_Location :
San Diego, CA
Print_ISBN :
0-7803-6591-7
DOI :
10.1109/CICC.2001.929731
