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[参考译文] TM4C123GH6PZ：两个系统时钟速度的配置

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Other Parts Discussed in Thread: EK-TM4C1294XL
请注意，本文内容源自机器翻译，可能存在语法或其它翻译错误，仅供参考。如需获取准确内容，请参阅链接中的英语原文或自行翻译。

https://e2e.ti.com/support/microcontrollers/arm-based-microcontrollers-group/arm-based-microcontrollers/f/arm-based-microcontrollers-forum/1224050/tm4c123gh6pz-configuration-of-two-system-clock-speed

器件型号：TM4C123GH6PZ
主题中讨论的其他器件：EK-TM4C1294XL、 TM4C123

如何在两个不同的系统时钟速度之间配置和切换？

例如、我需要在常规运行(主电源打开)期间使用80MHz 时钟速度、在低功耗模式和备用电池(主电源关闭)期间使用40MHz 时钟速度？

我的程序应该正常运行在80MHz、主电源打开时、它应该在检测到主电源关闭条件时切换到40MHz 的不同系统时钟速度。

请共享示例代码以执行上述任务。