摘要
介绍了利用MODEM芯片实现单片机远程通讯。着重分析73K222AL芯片的结构特征,设计出MODEM芯片与AT89C51的接口电路,并给出BELL103协议下通讯呼叫连接过程的部分程序。
The realization of long-distance communication of single chip microcontroller by using modem chip is introduced. The structural characters of 73K222AL and the application circuit are analyzed in detail. Some of the handshaking procedure is given.
出处
《电气自动化》
北大核心
2003年第5期64-66,共3页
Electrical Automation
