基于AVR单片机大容量数据采集系统的设计

高速嵌入式AVR单片机广泛应用于数据采集控制系统中,但由于自身存储容量过小而不能尽其所能,外扩F lash芯片很好地解决了存储容量上的瓶颈,在提高单片机性能的同时大大降低了系统成本。基于此设计了5路A/D采集电路,同时介绍了各个芯片的特点、功能结构,并在此基础上给出了它们之间的硬件接口设计及程序设计流程。

Design of a Large Capacity Data Acquisition System Based on AVR

The high-speed embedded AVR microcontrollers are widely used in data acquisition and control system.But because its storage capacity is too small and can not do anything,so the external expansion flash chips is used to solve the bottleneck of this problem and improves the performance while significantly reducing the system cost.This article designs the 5-way A/D sampling circuit,describes the features and functional structure of each chip,and on this basis,gives their design and hardware interface between the program design process.