ELECTRONIC CONTROL UNIT FOR USE IN A VEHICLE

摘要

An electronic control unit (1) for use in a vehicle, in particular motor vehicle is specified, which electronic control unit (1) can use simple means to detect a dip in an input voltage (U) which is fed to the control unit (1). The control unit (1) comprises a controller (2) and a voltage measuring path (4) for feeding a voltage measurement variable (U'), characteristic of the input voltage (U), to the controller (2). A switching device (18) for switching off the current to the voltage measuring path (4) in a sleep state is arranged in the voltage measuring path (4). According to the invention, the switching device (18) is designed to maintain automatically a fully driven switched state in the absence of a defined switch-off signal, until the input voltage (U) drops below a predefined threshold value (Us).