基于总线法驱动MAX197

MAX197 Driven by Bus Method

MAX197是12位的AD采集芯片,具有采集速度快,精度高的优点。当精度需求比较高时,对MAX197位操作的驱动方式已经不能满足工作要求。针对这种情况,结合硬件设计,本文提出了基于总线的方法,利用单片机P2,P0口的特点,通过总线驱动MAX197,满足了高精度的工作要求,简化了程序设计,使程序易于维护。

MAX197 is a 12-bit AD capture chip,which has the advantages of high acquisition speed and high accuracy. When the precision is demanded higher,the driven mode for operating MAX197 is unable to meet the job requirements. In view of this situation and combining with the hardware design,this paper presents the method that based on the bus to drive MAX197 by bus with the using of characteristics of MCU P2,P0 port,so as to meet the requirements of high-precision work. It simplifies the programming and makes the procedure easy to maintenance.