用单片机内置的比较器实现RS485接口

RS 485 interface based on single-chip-computer's internal comparator

提出了一种RS-485接口实现方法,它采用单片机内置的比较器和I/O(输入输出)驱动来实现RS-485数据收发。大量实测表明,该方法可靠性高,可省略专用的RS-485接口芯片。该技术已被应用于多个批量化产品中,取得了良好的经济效益。

This article presented a new RS - 485 - standard - based interface method, which utilized single - chip - computer＇s internal comparator and I/O driver. A lot of federal measurements proved that this method had high reliability and might omit the standard RS - 485 interface IC. And also, this method has been widely applied in several kinds of volume products and saved a great deal of manufacture costs.