Electronic controller on board

Abstract

To eliminate the problem that, in the conventional car-mounted electronic control device the size of an IC diode becomes bigger because the CPU handles a considerable amount of input and output and the ECU becomes bigger to maintain a filter constant of a noise filter. The patent relates to the car-mounted electronic control device which includes a core integrated circuit device has a microprocessor. A first ancillary integrated circuit device has an indirect parallel input circuit that receives low-speed digital signals parallel, and the first ancillary integrated circuit device outputs the received digital signals serially to the core integrated circuit device. A second ancillary integrated circuit device has a multi-channel A / D converter that receives analog signals parallel and converts those into digital signals, and the second ancillary integrated circuit device outputs the digital signals serially to the core integrated circuit device. The core integrated circuit device generates control signals based on the received signals and outputs the control signals to control object devices.

Description

technical field [0001] The present invention relates to an on-vehicle electronic control device with a built-in microprocessor for fuel supply control of an automobile engine, and in particular to an on-vehicle electronic control device that improves the processing method of a large number of input and output signals, realizes miniaturization and standardization of the device, and simultaneously improves the safety of the device . Background technique [0002] Figure 14 Shown is a circuit block diagram of a conventional in-vehicle electronic control unit. [0003] exist Figure 14 Among them, 1 is an ECU (Engine Control Unit) formed on one printed circuit board, 2 is a large LSI (Integrated Circuit Device) of ECU1, and this LSI2 is a CPU (Microprocessor) 3. The nonvolatile latch memory 4 , the RAM memory 5 , the input data selector 6 , the A / D converter 7 , the output latch memory 8 , and the like are connected by a data bus 30 . 9 is a power supply assembly for supplying...

AI Technical Summary

Problems solved by technology

[0030] In particular, after the miniaturization and standardization of the input and output circuits of the microprocessor are achieved, the problem of unavoidable decline in the original control ability and responsiveness of the microprocessor occurs.

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