[{"title":"( 2 个子文件 194KB ) FT232R设计USB转RS485 422串口板pdf硬件原理图PCB+AD集成封装库文件.zip","children":[{"title":"USB-485.pdf <span style='color:#111;'> 387.50KB </span>","children":null,"spread":false},{"title":"USB-485.IntLib <span style='color:#111;'> 22.00KB </span>","children":null,"spread":false}],"spread":true}]