HOW DOES IT WORK?

Pressure 22 Click is based on the MS5839-02BA, an ultra-compact chlorine-resistant digital pressure and temperature sensor from TE Connectivity. It has a primary pressure operating range of 300 up to 1200mbar. The gel-filled design offers this sensor advanced water resistance, thus allowing it to measure extended pressure range from 10 up to 2000mbar, hence the 02BA in the marking. The overpressure comes at 10 bar. The sensor delivers a decent pressure sensing accuracy of ±0.5mbar. In addition to pressure, this sensor can measure the temperature in a range of -20 up to 85°C with a temperature sensing accuracy of ±2°C.

It integrates the 24-bit sigma-delta analog-to-digital converter for both the pressure and the temperature sensors. The MS5839-02BA sensor consists of a piezo-resistive sensor and a sensor interface integrated circuit. It converts the sensor's uncompensated analog output value voltage to a 24-bit digital value. The sensor is factory calibrated at two temperature and pressure points, where as a result, six coefficients necessary to compensate for process variations and temperature variations are calculated and stored in the 112-bit PROM of the sensor.

Pressure 22 Click uses a standard 2-Wire I2C interface to communicate with the host MCU, supporting clock speeds up to 400KHz. The reset is only available over the I2C interface, as well as the read from the PROM.

This Click board™ can be operated only with a 3.3V logic voltage level. The board must perform appropriate logic voltage level conversion before using MCUs with different logic levels. It comes equipped with a library containing functions and an example code that can be used, as a reference, for further development.

SPECIFICATIONS