Circuit arrangement and method for controlling at least one actuator in a motor vehicle
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United States of America Patent
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Issued Date -
Jan 17, 2008
app pub date -
Jun 27, 2007
filing date -
Jun 27, 2006
priority date (Note) -
Abandoned
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Abstract
A circuit arrangement is provided for controlling at least one actuator in a motor vehicle, comprising a microcontroller, a watchdog circuit with an active operating mode for monitoring the functionality of the microcontroller and a reduced activity operating mode, and with at least one microcontroller-controlled peripheral unit with a first operating mode for controlling at least one actuator. According to the invention, the peripheral unit has a second operating mode and is designed to change the actuator to a safe mode and/or to keep it in this mode when the peripheral unit is in the second operating mode, and the circuit arrangement is designed to operate the peripheral unit in the second operating mode at least whenever the watchdog circuit is in the reduced activity operating mode. The invention relates furthermore to a corresponding method for controlling at least one actuator in a motor vehicle.
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