RS-485_guide

RS-485_guide广州周立功单片机发展有限公司

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38730977

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目 录
第1章
1.1

RS-485 选型及应用指南 .........................................................................1
RS-232/422/485 标准 ...............................................................................................1 1.1.1 RS-232 标准 .....................................................................................................2 1.1.2 RS-422/485 标准 ..............................................................................................2 RS-485/RS-422 芯片 ................................................................................................5 1.2.1 增强型低功耗半双工 RS-485 收发器－SP481E/SP485E ..............................7 1.2.2 1/10 单位负载 RS-485 收发器－SP481R/SP485R ..................................