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Vehicular electronic control apparatus

  • US 6,732,044 B2
  • Filed: 08/06/2002
  • Issued: 05/04/2004
  • Est. Priority Date: 02/20/2002
  • Status: Expired due to Fees
First Claim
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1. A vehicular electronic control apparatus comprising:

  • a core integrated circuit device including a microprocessor, a first ancillary integrated circuit device for receiving low-speed digital signals connected to the core integrated circuit device in such manner that serial communication is performed with each other and a second ancillary integrated circuit device for receiving analog signals connected to the core integrated circuit device in such manner that serial communication is performed with each other, wherein the core integrated circuit device includes;

    a direct parallel input circuit and a direct parallel output circuit for inputting and outputting signals from and to control object devices, a first parent station serial/parallel converter and a second parent station serial/parallel converter, a first nonvolatile memory to which control programs that serve to control the control object devices are written from an external tool, and a first RAM for computation, and the microprocessor of the core integrated circuit device to which the direct parallel input circuit, the direct parallel output circuit, the first and second parent station serial/parallel converters, the first nonvolatile memory, and the first RAM are bus-connected;

    the first ancillary integrated circuit device includes;

    a first child station serial/parallel converter connected to the first parent serial/parallel converter of the core integrated circuit device in such a manner that serial communication is performed with each other, and an indirect parallel input circuit for receiving the low-speed digital signals in parallel, and the first ancillary integrated circuit device outputs the digital signals received by the indirect parallel input circuit to the core integrated circuit device through the first child station serial/parallel converter, and the second ancillary integrated circuit device includes;

    a second child station serial/parallel converter connected to the core integrated circuit device in such a manner that serial communication is performed with each other, and a multi-channel analog-to-digital converter for receiving the analog signals parallel and for converting the received analog signals into digital signals, and the second ancillary integrated circuit device outputs the digital signals converted by the multi-channel analog-to-digital converter to the core integrated circuit device through the second child station serial/parallel converter, and wherein the core integrated circuit device generates control signals based on the input signals received from the control object devices, the digital signals received from the first ancillary integrated circuit device, and the digital signals received from the second ancillary integrated circuit device, and outputs the generated control signals to the control object devices.

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