Kinetis系列MCU时钟系统结构与配置研究  

Research on Clock System Structure and Configuration of Kinetis Series MCU

作　　者：蒋建武[1,2] 王宜怀[1] 

机构地区：[1]苏州大学计算机科学与技术学院,江苏苏州215006 [2]泰州职业技术学院信息工程学院,江苏泰州225300

出　　处：《电子器件》2014年第6期1172-1176,共5页Chinese Journal of Electron Devices

基　　金：国家自然科学基金项目(61070169);泰州职业技术学院硕博基金项目(TZYBS-14-5)

摘　　要：内嵌ARMCortex TM-M核的Kinetis系列微控制器具有复杂的时钟系统,时钟系统中多功能时钟发生器、锁相环、锁频环、晶振系统等功能模块协调工作时能为应用系统提供稳定的时钟源。通过对K60时钟系统的结构和配置方法的剖析,以及对多功能时钟发生器运行机制的梳理,提出了时钟源性能的测试方法以及芯片系统各功能模块时钟源的选择方法,为Kinetis相关芯片应用设计过程中的时钟系统配置以及时钟源选择提供了借鉴与参考。Kinetis series of MCUs embedded the core of ARMCortexTM-M contains a complex clock system. At the time of each functional module in the clock system which includs multi-function clock generator,phase-locked loop,frequency-locked loopand crystal vibration system,coordinated work,the clock system can provide a stable clock source for the application system. Based on the analysis of the structure and configuration method of K60 clock system and the MCG operating mechanism,the testing method of clock source performance and the clock source selection method of each function modules are proposed. All of above provides references for Kinetis related chips clock system configuration in the process of application design as well as the clock source selection.

关 键 词：微控制器 时钟系统 运行机制 多功能时钟发生器 

分 类 号：TP368.1[自动化与计算机技术—计算机系统结构]