该文章为一篇基于C8051F020为主控芯片，以SPC3为PROFIBUS协议处理芯片开发PROFIBUS-DP从站的学术论文，文章中详细列出了硬件设计原理图，软件设计流程图及一些相关的测试，是一篇难得的基于C8051F020开发PROFIBUS-DP从站的好资料。-This article is one based on C8051F020 the master chip SPC3 PROFIBUS protocol processing chip developed the PROFIBUS