【摘要】 为了延长电池供电的便携式电子产品的寿命并满足性能需求,迫切需要降低功耗。以军用手持计算器设计为例,研究了手持设备低功耗设计的主要技术和关键设计环节。从器件选择、动态电压调整(DVS)、供电管理和存储器管理等方面详细阐述了各部件的软硬件协同低功耗实现。测试结果表明,该计算器达到低功耗应用要求,设计方法对于其它的手持设备具有参考价值。更多还原

【Abstract】 To extend the service life of battery-powered portable devices while meeting performance requirements,reducing the power consumption has become a major concern.A design of military handheld calculator based on TMS320VC5509A is introduced as an exam-ple.The realization of low power by cooperation with hardware and software of all parts is described in detail,such as choices of devices,dynamic voltage scaling,management of power supply and memory etc.Test result shows that the calculator needs the requirement of low power.The methods are very useful to the design of other handheld device.更多还原