低功耗定时可以运行在以LSE，LSI或外部时钟驱动的情况下，包括停止模式。
The low-power timer has an independentclock and is running also in Stop mode if it is clocked by LSE, LSI or anexternal clock.
外部设备——例如，通用串行总线(usb)端口或系统时钟。
External devices — For instance, Universal Serial Bus (USB) ports or the system clock.
CPU 电源状态程度越深，采取的电能节省措施就越多 — 比如说停止处理器时钟或停止外部中断请求。
The deeper the C state, the more power saving steps are taken—steps like stopping the processor clock or stopping interrupts from coming in.
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