MCU控制電池管理是成功的物聯(lián)網(wǎng)實現(xiàn)的關(guān)鍵

　　MCUs將在物聯(lián)網(wǎng)（IoT）的主要控制元件導向設(shè)計這些MCU可能是電池供電。電源效率將是至關(guān)重要的，以實現(xiàn)可接受的電池壽命，因此MCU將需要管理電池使用更精確比以往任何時候。許多微控制器具有特殊的功能，幫助管理電池功率和使用這些功能的優(yōu)化可以贏得或失去在市場上的差異。

　　本文將快速回顧一些關(guān)鍵功能，需要實現(xiàn)高效的基于電池的MCU設(shè)計，并舉例說明，使用示例設(shè)備，這些功能如何提高效率和電池壽命。軟件工具，幫助估計電池壽命將用于顯示如何估計壽命之前詳細的設(shè)計實現(xiàn)。這有助于顯著與設(shè)備的選擇，是一個關(guān)鍵技術(shù)，創(chuàng)造高效節(jié)能的設(shè)計。

　　Managing power domains

　　When thinking of battery-based MCU implementations we may initially have the assumption that there is a single MCU power domain， running off a battery and that our objective is to manage this power domain to create the most power-efficient MCU implementation possible. Soon we will discover that this assumption is usually false， however， and that even simple MCUs typically have multiple power domains on-chip. It turns out that having multiple power domains can be a big advantage when power efficiency is of primary importance to our design. Having multiple domains can allow us to more efficiently manage and control power to the portions of the MCU that are needed based on the functions we need to perform for our particular implementation. Let’s look at a specific MCU and see how multiple power domains can be advantageous to a typical battery-powered design.