一种适用于超低功耗MCU的振荡器设计

Design of an Oscillator for Ultra-Low Power MCU

提出并设计了一种新型低速振荡器,利用MCU电路内部的主时钟对低速时钟进行测试并且自校准,在几乎不增加功耗的前提下可以大大提高低速振荡器的精度和稳定性。与常规的低速振荡器相比,该结构具有功耗低、精度高、稳定性好的优点。仿真结果表明,此电路结构符合设计预期。

The paper proposes a low-speed oscillator with a new structure. The low-speed oscillator uses the internal main-clock of the MCU to test and adjust itself. Although the structure can greatly improve precision and stability, it does not increase the power consumption. Compared to conventional low-speed oscillators, the new low-speed oscillator has many advantages such as high-precision, high-stability and low-power consumption. Simulation results show that it meets the expected specifications.