MIKROE-2501

THERMO K click 1 THERMO K click THERMO K click THERMO K click IC/Module Interface MCP9600 datasheet [1] I2C Power supply 3.3V or 5V Product page shop.mikroe.com/click/sensors/thermo-k [2] Schematic THERMO K click schematic [3] THERMO K click carries the MCP9600 IC from Microchip and and depending on the type of probe it uses, the click can measure temperatures from −200 °C to +1372 °C. THERMO K click is designed to run either on 3.3V or 5V power supply. It communicates with the target MCU through I2C interface. Features and usage notes Temperature range With the type-K probe, available in our store [4], this click can measure temperature up to +480 °C. MCP9600 from Microchip The MCP9600 IC converts thermocouple EMF to degree Celsius with integrated Cold-Junction compensation. It corrects the thermocouple nonlinear error characteristics of eight thermocouple types and outputs ±1.5°C accurate temperature data. 4 alert outputs THERMO K click has 4 alert outputs onboard that can be used to detect multiple temperature zones. You can define on which specific temperature the THERMO K click will send an alarm. THERMO K click 2 Low power modes Low-Power modes are available for battery-powered applications. In shut-down mode the module uses only 2 µA. Thermocouple probe In order to use THERMO K click you need to connect the appropriate K-type thermocouple probe (not included in the package) into the PCC-SMP connector. Key features • MCP9600 IC from Microchip • Four Programmable Temperature Alert Outputs • Operating Current: 300 µA (typical) • Shutdown Current: 2 µA (typical) • Interface: I2C • 3.3V or 5V power supply Jumpers and settings Designator Name Default Position Default Option Description: describe the use + list all options with respective descriptions JP1 PWR.SEL. Left 3V3 Power Supply Voltage Selection 3V3/5V, left position 3v3, right position 5V JP2 ADDR. SEL. Right GND I2C address Selection. Left position (VDD) is 1100111x and right position (GND) is 1100000x . Additional information Our store [5] offers Thermocouple Type-K Glass Braid Insulated probes. Pinout diagram This table shows how the pinout on THERMO K click corresponds to the pinout on the mikroBUS™ socket (the latter shown in the two middle columns). Notes Pin Pin Notes mikroBUStm Alert 4 output ALERT4 1 AN X PWM 16 ALERT2 Alert 2 output Alert 3 output ALERT3 2 RST INT 15 ALERT1 Alert 1 output Not connected NC 3 CS TX 14 NC Not connected Not connected NC 4 SCK RX 13 NC Not connected Not connected NC 5 MISO SCL 12 SCL I2C Clock Not connected 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 THERMO K click Programming The demo shows the temperature on the TFT or LCD display. It measures every half a second. We have examples for PIC, dsPIC, PIC32, ARM, AVR and FT90x compilers. The code snippet is from the Example folder of the PIC compiler and P18F87K22 MCU. This example is a temperature reading routine. First, we are reading the “Thermocouple Temperature Register” and then we are converting the value to a temperature in the Celsius scale. float Read_Temperature() { float Temperature; tmp_data[0] = MCP9600_TH; I2C1_Start(); I2C1_Wr( MCP9600_I2C_ADDR ); I2C1_Wr( tmp_data[ 0 ] ); I2C1_Stop(); Delay_us( 50 ); I2C1_Start(); I2C1_Wr( MCP9600_I2C_ADDR | 1 ); tmp_data[ 0 ] = I2C1_Rd( 1 ); tmp_data[ 1 ] = I2C1_Rd( 0 ); I2C1_Stop(); if((tmp_data[0] & 0x80) == 0x80) { tmp_data[0] = tmp_data[0] & 0x7F; Temperature = 1024 - (tmp_data[0]*16 + tmp_data[1] / 16); } else { Temperature = (tmp_data[0] * 16 + (float)tmp_data[1] / 16); } return Temperature; } 3 THERMO K click Resources • • • • THERMO K schematic [3] MCP9600 datasheet [1] Libstock Library [6] mikroBUS™ standard specifications [7] References [1] [2] [3] [4] [5] [6] [7] http:/ / ww1. microchip. com/ downloads/ en/ DeviceDoc/ 20005426B. pdf https:/ / shop. mikroe. com/ click/ sensors/ thermo-k http:/ / cdn-docs. mikroe. com/ images/ 3/ 3e/ THERMO_K_click_schematic. pdf https:/ / shop. mikroe. com/ accessories/ sensors/ thermocouple-type-k-glass-braid-insulated https:/ / shop. mikroe. com/ accessories/ sensors/ thermocouple-type-k-glass-braid-insulated?search_query=thermocouple& results=2 http:/ / libstock. mikroe. com/ projects/ view/ 1976/ thermo-k-click http:/ / download. mikroe. com/ documents/ standards/ mikrobus/ mikrobus-standard-specification-v200. pdf 4 Article Sources and Contributors Article Sources and Contributors THERMO K click  Source: http://docs.mikroe.com/index.php?oldid=3004  Contributors: Lana.vulic Image Sources, Licenses and Contributors File:THERMO K click.jpg  Source: http://docs.mikroe.com/index.php?title=File:THERMO_K_click.jpg  License: unknown  Contributors: Lana.vulic File:mikrobus logo.png  Source: http://docs.mikroe.com/index.php?title=File:Mikrobus_logo.png  License: unknown  Contributors: Vojislav.gvozdic License Creative Commons Attribution https:/ / creativecommons. org/ licenses/ by/ 4. 0/ 5