关键词: MCU, 振荡器, 低功耗, 高精度, 高稳定性TL431

Abstract: 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 convention allow-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.

Key words: MCU, oscillator, low-power, high-precision, high-stability