TI中文支持网我想通过降低运行频率来降低cc2640r2f的功耗，但没找到例程
da qin zheng sheng：
通用的arm芯片比如stm32通过
pll锁相环来改变mcu 频率，cc26系列内部晶振48Mhz,
外部晶振24MHz。
da qin zheng sheng：
cc2640蓝牙芯片通常工作在standby模式降低功耗，通过内部rtc来唤醒。
Susan Yang：
参考 www.ti.com/…/swcu117h.pdf 可知 可以通过SCLK_HF_DIV来设置
Active mode is requested when there is no request set for power down or power off. When active system mode is entered, the AUX clock source is derived from the high-speed system clock, which can be divided down by configuring the AON_WUC:AUXCLK.SCLK_HF_DIV register.
The maximum frequency is 24 MHz, and the configuration of clock division must be done by the system CPU.
When the AUX_PD is in active mode, the device is prevented from entering standby or shutdown power modes because the AUX_PD is requesting system resources from the supply system.
