STEVAL-MKI141V2

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The STEVAL-MKI141V2 is an evaluation board from STMicroelectronics designed for evaluating the H3LIS331DL low-power high-performance three-axis linear accelerometer. This board is composed of two boards, one hosting the components for the accelerator and the other allowing the connection with the microcontroller and enabling the communication with the embedded system through a Serial Peripheral Interface (SPI).

The H3LIS331DL is a 3-axis low-power linear accelerometer that offers a full-scale range from ±6g to ±400g, with a maximum sensing range of ±3000g. The device features a system-level power saving mode, which lowers the power consumption when the sensor is not in use. It also integrates the single-core 16-bit interlaced sampling analog-to-digital converter, which greatly reduces the power consumption and the development cost.

The STEVAL-MKI141V2 board includes the H3LIS331DL evaluation board and the USB connector for communication with the microcontroller. The board is powered by a regulated 3.3V supply with an on-board voltage regulator. It includes a USB connector for connecting to the PC via the USB port, and an integrated level shifter to convert logic levels between the 3.3V and 5V device inputs.

The H3LIS331DL accelerometer on the STEVAL-MKI141V2 is used to measure acceleration in three axes: the x-axis, y-axis, and z-axis. The output from the sensor is digitized by the integrated 16-bit SAR ADC and output as a standard 16-bit data word. The output data can be read directly through an SPI/I2C-compatible data bus.

The STEVAL-MKI141V2 evaluation board also features on-board temperature compensation and automatic self-test functions. The temperature compensation feature enables the user to adjust the operation of the chip according to the ambient temperature, reducing the measurement bias caused by temperature changes. The self-test function allows the system to automatically identify any faults in the accelerometer and detect any problems due to aging or incorrect assembly.

The STEVAL-MKI141V2 board can be used in various applications, including industrial, automotive and consumer applications. In industrial applications, the board can be used to measure acceleration in machines, industrial equipment and medical applications. In automotive applications, the board can be used to detect vehicle’s acceleration and braking. In consumer applications, the board can be used for gaming devices, mobile phones, and gesture recognition.

In summary, STEVAL-MKI141V2 is a complete evaluation board for STMicroelectronics\' H3LIS331DL accelerometer. It offers a full-scale range from ±6g to ±400g, with a maximum sensing range of ±3000g and integrated temperature compensation and self-test functions. The board is suitable for various applications such as industrial, automotive and consumer applications.

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