Thermo 23 Click Board™

Product Code: MIKROE-4979

How Does The Thermo 23 Click Board™ Work? The Thermo 23 Click Board™ as its foundation uses the TMP144, a digital temperature sensor optimal for thermal management and thermal profiling applications from Texas Instruments. This temperature sensor is characterized by high accuracy; a temperature range of -10°C to +100°C provides typical ±0.5°C accuracy. The temperature sensing device for the TMP144 is the chip itself. A bipolar junction transistor inside the chip is used in a band-gap configuration to produce a voltage proportional to the chip temperature. The voltage is digitized and converted to a 12-bit temperature result in degrees Celsius, with a resolution of 0.0625°C. The TMP144 possesses several operational modes: Continuous-Conversion mode (CC), Shutdown, One-shot mode, and Extended Temperature mode, which increases the temperature-measurement range from -40°C to +120°C. In the CC mode, ADC performs continuous temperature conversions and stores each result to the temperature register, overwriting the result from the previous conversion, while Shutdown modes reduce power consumption in the TMP75C when continuous temperature monitoring is not required, typically less than 0.5μA.

Also, while the TMP144 is in Shutdown mode, it can perform a one-shot temperature measurement and return to the Shutdown state after the single conversion. The Thermo 23 Click Board™ communicates with MCU using the UART interface with commonly used UART RX and TX pins as its communication protocol operating at 115200bps by default configuration to transmit and exchange data with the host MCU. This interface can also be seen as both UART and SMAART Wire™ interface, supporting daisy-chain configurations. Besides, the interface also supports Multiple Device Access (MDA) commands that let the host communicate with multiple devices on the bus simultaneously. This sensor's special and equally important feature is its software interrupt, a temperature alert function that monitors the device temperature and compares the result to the values stored in the temperature limit registers to determine if the device temperature is within these set limits. The TMP144 does not issue future interrupts until the user writes sets the interrupt enable bit in the configuration register to re-enable future interrupts. The Thermo 23 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. However, the Click board™ comes equipped with a library containing functions and an example code that can be used, as a reference, for further development. SPECIFICATIONS Type Temperature & humidity Applications The Thermo 23 Click Board™ can be used for thermal management of various consumer, industrial, and environmental applications with many temperature measurement zones that need to be monitored On-board modules TMP144 - high-precision digital temperature sensor from Texas Instruments Key Features Low power consumption, high precision, UART interface, temperature sensor in the TMP144 is the chip itself, resolution of 0.0625°C, shutdown and one-shot mode, high accuracy, and more Interface UART Compatibility mikroBUS Click board size S (28.6 x 25.4 mm) Input Voltage 3.3V PINOUT DIAGRAM This table shows how the pinout of the Thermo 23 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 TX UART TX NC 4 SCK TX 13 RX UART RX NC 5 MISO SCL 12 NC NC 6 MOSI SDA 11 NC Power Supply 3.3V 7 3.3V 5V 10 NC Ground GND 8 GND GND 9 GND Ground ONBOARD SETTINGS AND INDICATORS Label Name