| 摘要 |
A system comprises an integrated package including a microcontroller having a vehicle bus controller, e.g., a CAN controller, for communicating directly with a vehicle bus, the microcontroller being always active; and a microprocessor having a communication module for communicating with the microcontroller, and not having a vehicle bus controller for communicating directly with the vehicle bus. The system may further include a power switch circuit for enabling the microcontroller to control power to and the state of the microprocessor. The microcontroller and the microprocessor may intercommunicate via a dedicated channel. The microcontroller may also have a hard-coded sequencer for enabling the microcontroller to load microcontroller control code into internal RAM of the microcontroller, which it receives from the microprocessor.
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