PHT Click Board™

Product Code: MIKROE-4348

How Does The PHT Click Board™ Work? The PHT Click Board™ is based on the MS8607, a digital combination sensor providing 3 environmental measurements all-in-one: pressure, humidity, and temperature from TE Connectivity. The MS8607 includes two sensors based on the MEMS technologies used to measure pressure, humidity, and temperature. The first is a piezo-resistive sensor providing pressure and temperature measurements, and the second sensor is a capacitive type humidity sensor providing relative humidity measurement. Each sensor is interfaced to a ΔΣ ADC integrated circuit for the digital conversion. The MS8607 converts both analog output voltages to a 24-bit digital value for the pressure and temperature measurements and a 12-bit digital value for the relative humidity measurement. Pressure measurement accuracy comes in at +/- 2 mbar, relative humidity at +/- 3% RH, and the temperature within 1°C. One standout feature of the MS8607 is it's very respectable low power consumption at as low as 0.78 µA.

Perfect for sensing general weather conditions, the MS8607 really shines for high altitude low-pressure applications. Capable of sensing down to 10mbar, the MS8607 is simple to use and gives the user some powerful readings with very little power and conversion time. The PHT Click Board™ communicates with MCU using the standard I2C 2-Wire interface with a maximum clock frequency of 400kHz. Since the sensor is supplied with 3.3V logic voltage level only, also featured on this Click board™ is a PCA9306 voltage-level translator from Texas Instruments. The I2C interface bus lines are routed to the dual bidirectional voltage-level translator that allows this Click board™ to be interfaced with both 3.3V and 5V MCUs. The PHT Click Board™ is designed to be operated with both 3.3V and 5V logic voltage levels that can be selected via VCC SEL jumper. This allows for both 3.3V and 5V capable MCUs to use the I2C communication lines properly. However, the Click board™ comes equipped with a library that contains easy to use functions and an example code that can be used as a reference for further development. SPECIFICATIONS Type Environmental Applications Can be used for environmental monitoring, as well as PHT applications such as HVAC and weather stations. On-board modules The PHT Click Board™ is based on the MS8607, a digital combination sensor providing 3 environmental measurements all-in-one: pressure, humidity, and temperature from TE Connectivity. Key Features Ultra-low power consumption, integrated pressure, humidity and temperature sensor, fully factory calibrated, high-resolution, and more. Interface I2C Compatibility mikroBUS Click board size S (28.6 x 25.4 mm) Input Voltage 3.3V or 5V PINOUT DIAGRAM This table shows how the pinout of the PHT Click Board™ corresponds to the pinout on the mikroBUS™ socket (the latter shown in the two middle columns). Notes Pin Pin Notes NC 1 AN PWM 16 NC NC 2 RST INT 15 NC NC 3 CS RX 14 NC NC 4 SCK TX 13 NC NC 5 MISO SCL 12 SCL I2C Clock NC 6 MOSI SDA 11 SDA I2C Data Power Supply 3.3V 7 3.3V 5V 10 5V Power Supply Ground GND 8 GND GND 9 GND Ground ONBOARD SETTINGS AND INDICATORS Label Name Default Description LD1 PWR - Power LED Indicator JP1 VCC SEL Left Power Supply Voltage Selection 3V3/5V: Left position 3V3, Right position 5V PHT CLICK ELECTRICAL SPECIFICATIONS Description Min Typ Max Unit Supply Voltage -0.3 3.3