这是开发Freeescale MC9S12系列的单片机的PWM模块的一个详细介绍文档，内容全面而完整，强烈建议初学者参考该文档学习MC9S12C和MC9S12XS系列的PWM模块开发，后边我有把我自己写的一个PWM开发源码发送上来，以供参考。开发环境还是CodeWarrior Development Studio for S12(X) V5.1-This is a development Freeescale MC9S12 series microcontroller PWM module has a detailed document, comprehensive and complete, we strongly recommend beginners learn MC9S12C reference to the document and MC9S12XS series of PWM module development, I have put myself behind the writing development of a PWM source to send up for reference. Development environment is CodeWarrior Development Studio for S12 (X) V5.1