The invention discloses an automobile controller wake-up circuit and method. The automobile controller wake-up circuit comprises an MCU and a micro-control unit. One or more CAN transceivers, the wake-up end of each CAN transceiver is connected with a bus wake-up source, and the enable control ends of all CAN transceivers are connected with the enable input end of the power supply chip; the enabling input end of the power supply chip is respectively connected with the hard wire wake-up source and the enabling control ends of all the CAN transceivers; the power supply output end of the power supply chip is connected with the power supply input end of the MCU; the input end of the signal detection circuit is connected with the hard wire wake-up source, the output end of the signal detection circuit is connected with the first GPIO end of the MCU, and the MCU judges the state of the hard wire wake-up source according to the state of the first GPIO end. According to the method, whether the current awakening mode is bus awakening or hard wire awakening can be judged after the MCU is awakened, so that the working state of the automobile controller is adjusted according to the actual working condition, and meanwhile, the state of a hard wire awakening source can be monitored in the running process.
本发明一种汽车控制器唤醒电路及方法,包括:MCU,微控制单元;一个及以上CAN收发器,每个CAN收发器的唤醒端与一个总线唤醒源相连接,所有CAN收发器的使能控制端与电源芯片的使能输入端相连接;电源芯片,所述电源芯片的使能输入端与硬线唤醒源及所有CAN收发器的使能控制端分别相连接;所述电源芯片的电源输出端与MCU的电源输入端相连接;信号检测电路,所述信号检测电路的输入端与硬线唤醒源相连接,所述信号检测电路的输出端与MCU的第一GPIO端相连接,所述MCU通过第一GPIO端的状态来判断硬线唤醒源的状态。本发明能够在MCU唤醒后判定当前唤醒模式是总线唤醒还是硬线唤醒,以根据实际工况调节汽车控制器的工作状态,同时能够在运行过程中监控硬线唤醒源状态。
Automobile controller wake-up circuit and method
一种汽车控制器唤醒电路及方法
09.05.2025
Patent
Elektronische Ressource
Chinesisch
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