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Project

Temperature measurement using TC74 (Microchip) thermal sensor and StartUSB for PIC

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Author: Rajendra Bhatt

Last Updated: 2017-07-21

Package Version: 1.0.0.0

Category: Measurement

Downloaded: 1611 times

Followed by: 1 user

License: MIT license  

This project describes how to interface Microchip's TC74 sensor with a PIC microcontroller to measure ambient temperature. The code is written in mikroC Pro for PIC and is illustrated with StartUSB for PIC board.

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DOWNLOAD LINK RELATED COMPILER CONTAINS
mikroC PRO for PIC
  • lib
  • src
  • exa
  • hlp
  • hex
  • sch
  • pcb
  • doc

Project Blog

The TC74 chip is a serially accessible, digital temperature sensor from Microchip Technology that measures the surrounding temperature with a resolution of 1°C. The temperature is available as an 8-bit digital word stored in its internal temperature register, which is accessible through a 2-wire I2C compatible serial bus. This project describes how to use the TC74 sensor with a PIC microcontroller to measure the surrounding temperature.



Interfacing TC74 temperature sensor with a PIC microcontroller

Interfacing TC74 temperature sensor with a PIC microcontroller

For demonstration of the technique, the PIC18F2550 microcontroller on the StartUSB for PIC board is used here.

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Circuit diagram

Circuit diagram

TC74 is an I2C compatible sensor and therefore is connected to the MSSP port pins of PIC18F2550.

View full image

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