资 源 简 介
利用先进的时钟控制能力提高MCU设计的处理效率
MCUs扩散到越来越多的权力约束的设计，加工效率成为提高系统设计的关注。以较少的功率获得额外的处理能力的驱动器不仅在电池供电产品中很重要，而且，越来越多的电源也被限制在许多“插件”模块中，这些电源模块的规格限制了电源。在这种情况下，一个高效的设计将能够提供更多的功能，并创造一个较低的效率实现竞争优势。
单片机设计的一个被忽视的方面是在时钟控制区域。设计人员可以通过使用时钟控制模块的高级功能来调整CPU、外设和其他消耗资源的时钟，从而创建更高效的设计。本文将探讨先进的时钟控制模块的一些常见功能的能力，并展示他们如何使用，可以提高处理效率，在大多数基于MCU的设计。
Clock sources
The overall operaTIon of the MCU is managed by a clock-control block and many clock-control blocks have features that can be used to select， control， and manage the clock sources for the CPU， memory， peripherals， and analog blocks. By controlling the clocks to these blocks， and even turning off the clock for features not being used during certain processing rouTInes， power can be applied to just the secTIons of the MCU that need it and just when they need it， making for a very efficient implementaTIon. The starting point for clock management and control are the various clock sources available for use by the various sub-modules. Understanding the advantages and disadvantages of each clock source is the starting point for an efficient MCU implementation.
