基于I^2C总线的神经元器件FT3150的端口扩展

Port extension technique research of neuron chip FT3150 based on I^2C bus

神经元器件作为LonWorks技术的核心控制器件,具有I2C总线功能,能够在资源有限的情况下对系统进行扩展。介绍了I2C总线通信技术、神经元器件FT3150和端口扩展器件PCF8574,并从硬件设计和软件编程给出了FT3150通过PCF8574进行端口扩展的应用实例。

As the central control part of LonWorks technology, neuron chip can conveniently extend the system with the simple I^2C bus function under limited resources.I^2C bus communication technology, LonWorks neuron chip FF3150 and port extension chip PCF8574 are introduced in this paper. A port extension application example between FF3150 and PCF8574 is presented according to the designing of hardware and the programming of software.