Title :
Dynamic voltage and frequency management for a low-power embedded microprocessor
Author :
Akui, Satoshi ; Seno, Katsunori ; Nakai, Masakatsu ; Meguro, Tetsumasa ; Seki, Takahiro ; Kondo, Tetsuo ; Hashiguchi, Akihiko ; Kawahara, Hirokazu ; Kumano, Kazuo ; Shimura, Masayuki
Author_Institution :
Sony, Tokyo, Japan
Abstract :
A dynamic voltage and frequency management scheme that autonomously controls the clock frequency (8 to 123 MHz at 0.5 MHz step) and adaptively controls the voltage (0.9 to 1.6 V at 5 mV step) with a leakage power compensation effect is developed for a low-power embedded microprocessor. It achieves 82% power reduction in personal information manager (PIM) application.
Keywords :
adaptive control; clocks; compensation; frequency control; integrated circuit design; leakage currents; low-power electronics; microprocessor chips; personal information systems; voltage control; 0.9 to 1.6 V; 8 to 123 MHz; PIM; adaptive voltage control; autonomous clock frequency control; dynamic frequency management; dynamic voltage management; leakage power compensation effect; low-power embedded microprocessor; personal information manager application; power reduction; Clocks; Delay; Detectors; Digital-to-frequency converters; Frequency; Large scale integration; Microprocessors; Monitoring; Synthesizers; Voltage control;
Conference_Titel :
Solid-State Circuits Conference, 2004. Digest of Technical Papers. ISSCC. 2004 IEEE International
Print_ISBN :
0-7803-8267-6
DOI :
10.1109/ISSCC.2004.1332595
