一种支持外部控制的动态电源管理方法

发布时间：2018-08-14 08:42

【摘要】：为降低微控制器(MCU)应用系统的功耗,节省硬件资源,提出了一种新型的动态电源管理方法。该动态电源管理方法在支持内部软件控制MCU系统内部电源域的基础上,扩展支持了外部设备对MCU系统内部电源域的控制;外部设备能够根据实际的应用场景实时通过通信电路对MCU系统内部电源域进行开启或关断控制;通信电路使用的通信端口与外部唤醒端口复用一个IO端口。仿真结果表明,对比传统门控时钟的低功耗方法,采用该动态电源管理方法在降低驱动电机的通用MCU系统的静态功耗方面有显著作用:在脉宽调制模块(PWM)稳定工作和待机状态时,系统总静态功耗分别降低了27.43%和98.18%。有效降低了MCU的系统功耗,节省了硬件资源,提高了对MCU内部电源域控制的灵活性和高效性。
[Abstract]:In order to reduce the power consumption of microcontroller (MCU) application system and save hardware resources, a new dynamic power management method is proposed. The dynamic power management method supports the internal software control of the internal power domain of MCU system, and extends the external equipment to control the internal power domain of the MCU system. According to the actual application scene, the external equipment can turn on or off the internal power supply domain of the MCU system in real time through the communication circuit, and the communication port used by the communication circuit can reuse an IO port with the external wake-up port. The simulation results show that, compared with the traditional gated clock method, The dynamic power management method has a significant effect on reducing the static power consumption of the general MCU system of the drive motor. The total static power consumption of the system is reduced by 27.43% and 98.18% respectively when the pulse width modulation module (PWM) is working stably and standby. It can effectively reduce the power consumption of MCU system, save hardware resources, and improve the flexibility and efficiency of MCU internal power domain control.
【作者单位】：辽宁大学物理学院;合肥科盛微电子科技有限公司;
【基金】：辽宁省教育厅高等学校科研基金(L2010152)
【分类号】：TN86

【相似文献】