低功耗智能电源应用的微控制器

　　低功耗智能电源应用的微控制器

　　微控制器正在以更低的功耗运行，以开辟新的应用，如智能照明和无线计量。新的设备正在降低功耗，给工程师们提供更多的选择，从高级语言开发工具到不同外设的范围。

　　智能电源的驱动来自多个方向。能够监视和控制接近负载点的电力消耗，使电力更均匀地分布在电网上，减少了操作员的浪费能力。对于用户来说，它可以提供更灵活的关税，更低的电力成本，并有助于降低整体电力使用，降低成本甚至更进一步。然而，无论是在资金成本还是在维护方面，这些设备都必须具有成本效益。数以百万计的智能电表更换电池是电网运营商的主要运营成本，也是实施的一个潜在缺陷。降低智能设备的功耗不仅可以降低功耗，还能使电池运行多年。

　　Reducing power further through effective device management， new low power design architectures， and power-sensitive manufacturing processes can also bring the total power budget down to the point where no batteries are needed. At this point， energy can be harvested from the environment – often from vibrational or thermal energy in an industrial environment – and stored in a local battery. This provides power for a microcontroller and often a sensor and a network link for monitoring. The choice of architecture for the node and for the microcontroller is vital for the performance and the battery life， and there are several different options.