分区和物联网设计带来的8位微控制器到聚光灯下

　　分区和物联网设计带来的8位微控制器到聚光灯下

　　虽然微控制器系统的设计实践开始转向32位设备几年前，简单的电路和瘦客户机在物联网（物联网）应用程序的优势是有可能保持8位MCU市场的健康成长路径。这将增加已经健康的8位市场在汽车，工业和商业应用，到目前为止还没有移动到32位指令集设备。

　　从市场份额来看，毫无疑问，世界正朝着设计的32位微控制器发展，根据总部位于英国的市场研究公司IC Insights。2013、32位MCU出货量增加了约百分之20，而4 / 8位MCU的出货量增长了约百分之6和16位的额同比增长百分之9。尽管32位的设计，越来越受欢迎，然而，4 / 8位和16位的MCUs单位体积继续增大，如图1所示。

　　The growth of 32-bit computing is due to several factors， including a trend toward unit costs that are， in some instances， competitive with the smaller-bit-width MCUs. From a technical perspective， 32-bit popularity is due to its expanded memory requirements， native 32-bit math， and advanced peripherals.

　　When these features are not required， the case for choosing 32-bit MCUs is considerably weakened and one of these applications domains is IoT.