Thermo 24 Click Board™

MIKROE-5110
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£9.10
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How Does The Thermo 24 Click Board™ Work?

The Thermo 24 Click Board™ as its foundation uses the STS40, a high-accuracy ultra-low-power 16-bit temperature sensor from Sensirion. This temperature sensor is characterized by high accuracy; temperature range of -40°C to +120°C provides typical ±0.2°C accuracy. It integrates a digital temperature sensor with a 16-bit analog-to-digital converter (ADC), a data processing circuit, and serial interface logic functions in one package. The voltage is digitized and converted to a 16-bit temperature result in degrees Celsius, with a resolution of 0.01°C. The STS40 achieves the most significant cost efficiency among comparable sensors.

The STS40 communicates with MCU using a standard I2C 2-Wire interface. Given that this chip can be found in multiple versions with its own unique I2C slave address, this version, specifically the STS40-AD1B, comes with the slave address of 0x44. Since the sensor for operation requires a 3.3V logic voltage level only, this Click board™ also features the PCA9306 voltage-level translator from Texas Instruments. The I2C interface bus lines are routed to the dual bidirectional voltage-level translator, allowing this Click board™ to work with both 3.3V and 5V MCUs properly.

The Thermo 24 Click Board™ can operate with both 3.3V and 5V logic voltage levels selected via the VIO SEL jumper. This way, it is allowed for both 3.3V and 5V capable MCUs to use the 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 Temperature & humidity
Applications The Thermo 24 Click Board™ can be used for thermal management and protection of various consumer, industrial, and environmental applications
On-board modules STS40 - high-accuracy ultra-low-power temperature sensor from Sensirion
Key Features Low power consumption, high precision, high accuracy, 16-bit temperature-to-digital converter, 0.01°C temperature resolution, I2C compatible serial interface, 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 Thermo 24 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 VIO SEL Left Logic Level Voltage Selection 3V3/5V: Left position 3V3, Right position 5V

THERMO 24 CLICK ELECTRICAL SPECIFICATIONS

Description Min Typ Max Unit
Supply Voltage 3.3 - 5 V
Accuracy - ±0.2 - °C
Resolution - 16 - bit
Operating Temperature Range -40 +25 +120 °C

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