【摘要】 本文以一种SPLD器件为例,设计了一个周期和个数可控的脉冲发生系统。首先给出本设计的目标,并根据目标分析可行的各种方案,接着分四部分介绍了一种理想的实现方法,本文还首次提出了脉冲奇数分频中克服简单计数分频法无法实现50%占空比的新方法。最后对该系统进行测试并总结,它是目前较为实用的低成本高精度的可控脉冲发生系统,它同时也为处于相关教学一线的老师提供了一个实施案例。更多还原

【Abstract】 This paper designed a cycle and number programmable pulse generator system with a SPLD device.First,it listed the requirements of the design and analyzed the various possible options according to the requirements.Then it described an ideal design in five parts,among which this paper presented a new method for the first time in achieving the 50% duty cycle in odd division.Finally,it did some test and summarized the system.It is a practical,low-cost and high-precision controllable pulse generator system;it then provides the related teachers with a good implementation case.更多还原