Monitoring Multiple Temperature Nodes Using TC74
Thermal Sensors and a PIC16C505
The TC74 is a serially accessible digital temperature sensor that can determine temperatures in the range of 25°C to 85°C with ±2° absolute accuracy or 0°C to 125°C with ±3° absolute accuracy. Temperature information is retrieved from the TC74 via a two wire SMBus/I 2 C ? compatible interface. The TC74 represents the temperature as an 8-bit two?s complement signed integer that has a direct correspondence to the
device?s temperature in degrees C resulting in a 1° temperature resolution. The TC74 is available in eight address versions so that eight devices can be monitored on the same two wire SMBus interface with no additional circuitry.
Multiple Temperature Nodes, Thermal Sensors, PIC16C505, TC74