关键词: 秒脉冲, 分段拟合, 时间补偿, 实时时钟

Abstract: The paper presents a high precision pulses generation method.Based on the temperature characteristics of crystal oscillator,a piecewise fitting method is used to estimate the vibration error,the frequency of oscillations is compensated at different working temperatures,generates high precision pulses per second signal after compensation.Itcanbe used in RTC design of low power SoC.

Key words: pulsesper second, piecewise fitting, time compensation, RTC