基于单片机及CPLD的多间隔脉冲产生电路

Design of multi-interval pulse circuit based on MCU and CPLD

单片机具有逻辑控制功能灵活的特点,复杂可编程逻辑器件(CPLD)具有集成度高、可靠性好及工作速度快的优点,基于二者各自的优点,设计了一种脉宽固定为1μs,周期可调的单头、双头、三头三路脉冲产生电路,该脉冲发生器可实现在脉冲不间断的情况下改变周期,其波形要求精度高、漂移小、抗干扰能力强。

Microcontroller has the logic control functions and flexible features, complex programmable logic device （CPLD） has high integration, reliability and the advantages of fast work, based on both their respective advantages, the design of a fixed pulse width 1μs, cycle adjustable single head, double heads, three heads triple pulse generating circuit is proposed, the pulse generator can be realized in the case of continuous change in the pulse cycle, the waveform requires high precision, small drift and high anti-interference ability.