Cortex-M0+内核Kinetis L系列的低功耗机制分析

Analysis of Low Power Consumption Mechanism of Kinetis L Series Based on Cortex-M0+ Kernel

以Freescale公司KL25微控制器为例,从软硬件功耗模型、优化软硬件功耗因子等角度,分析了超低功耗内核KL系列低功耗实现机制,阐述了在不同功耗模式下与之对应时钟模式的关系以及低功耗中断策略,同时与几款典型微控制器进行了比较分析,给出了KL25在低功耗应用中的性能参数,为Kinetis L系列的低功耗应用提供了技术基础。

The paper analyzes the mechanism of low power implementation, based on Freescale KL25 series microcontroller, from the perspective of the hardware and software model and the interruption strategy. Also the paper compares with a few typical chips for providing the performance parameters of KL25. Eventually it provides the technical basis of low power applications for the Kinetis L series.