According to the functional requirements of automotive instruments, the instrument cluster system consists of power supply, main control chip, CAN communication interface (CAN transceiver), stepper motor drive and LCD display module.

Meter system dashboard has three display methods: pointer meter display, LCD digital screen display and indicator light off display.

Among them, the speedometer, tachometer, water temperature gauge and fuel gauge are displayed by traditional pointer instruments; total mileage, double short mileage, outside temperature, average fuel consumption, instantaneous fuel consumption, distance traveled, distance traveled, and traveled Information such as time, average speed, vehicle running status and fault diagnosis is displayed on the LCD digital screen; the main display of the indicator light includes information such as ABS alarm, brake alarm, and engine fault alarm.

The instrumentation system uses the MC9S12XHZ series 16-bit microcontroller (MCU) MC9S12XHZ512 as the main control chip to complete signal processing.

MC912XHZ512 microcontroller embedded LCD control LCD32F4BV1, CAN network controller MSCAN and stepper motor controller MC10B12C and other functional modules, which greatly satisfy the functional requirements of automotive instrumentation, XGATE coprocessor module with programmable DMA controller, real-time Interrupt handlers and virtual peripheral controllers.

Two 1Mbps CAN2.0A/B software compatible modules; 6 stepper drive and 32x4 LCD driver and other features, low cost, low power consumption, and high code size efficiency. The LCD32F4BV1 driver module has 32 front panel drivers and backplane drivers for maximum 128 LCD segments.

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