Data storage device and method, electronic control unit and automobile

The invention provides a data storage device, a data storage method, an electronic control unit and an automobile. The data storage device is arranged in an ECU, and is configured to comprise an ECU main chip and a recording module, wherein the ECU main chip and the recording module are integrated on the same circuit board; and the ECU main chip is used for acquiring running state information of an engine according to configuration information, and controlling the recording module to store the running state information. Therefore, the running state information of the engine is recorded and stored, and meanwhile, the safety level and the anti-interference capability of the data storage device are improved. 本申请提供一种数据存储装置、方法、电子控制单元及汽车，通过将数据存储装置设置在ECU内部，并设置数据存储装置包括ECU主芯片和记录模块，ECU主芯片与记录模块集成在同一块电路板上，ECU主芯片用于根据配置信息，获取发动机的运行状态信息，并控制记录模块对运行状态信息进行存储，实现了对发动机的运行状态信息的记录和存储，同时，提高了数据存储装置的安全等级和抗干扰能力。