该芯片是一个低速的最高20kB。 A 类串行总线协议LIN 的子总线可以用于像座位门房顶控制板方向盘等模块它的作用是将开关执行元件和传感器从子总线连接到主总线。-LIN sub-bus can be used like a steering wheel, seat control panel door roof modules and its role is to switch actuators and sensors are connected to the sub-bus the mai

1. 单片机为STM32F051 2. 485通讯式倒计时 3. 协议符合倒计时标准“GAT 508-2004 道路交通信号倒计时显示器”(1. MCU is STM32F051 2.485 communication countdown panel 3. agreement conforms to the countdown standard "GAT 508-2004 road traffic signal countdown display")