The SP486 and SP487 are low–power quad differential line drivers meeting RS-485 and RS-422 standards. The SP486 features a common driver enable control the SP487 provides independent driver enable controls for each pair of drivers. Both feature t

rs485通讯例子，并通过lcd1206显示上位机发过来的数据-rs 485 tongxun lizi ,bing tongguo lcd1602xianshi shangweiji faguolai de shuju