Digital thermometers and thermostats provide 9-digit temperature readings to indicate the temperature of the device. It has three thermal alarm outputs and can also be used as a thermostat. If the temperature is greater than or equal to the user-defined temperature th, the t high drive is high. If the temperature is lower than or equal to the user-defined temperature TL, t low is driven to high. When the temperature exceeds th, the TCOM is driven high and remains high until the temperature is below TL.
User defined temperature settings are stored in nonvolatile memory, so components can be programmed before they are inserted into the system, or they can be used in stand-alone applications without a CPU. The temperature setting and temperature reading are communicated with the thermostat via a simple 3-wire interface.
Simply add temperature monitoring to any system
The measurement temperature ranges from – 55 ° C to + 125 ° C in 0.5 ° C increments; Fahrenheit is equivalent to – 67 ° f to + 257 ° f in 0.9 ° f increments
The temperature is read as a 9-bit value
Convert temperature to digital word at a speed of 750 ms (maximum)
Constant temperature setting is user-defined and non-volatile
It can be used in various applications
The supply voltage ranges from 2.7V to 5.5V
Read / write data through 3-wire serial interface (CLK, DQ, low level effective RST)
Application / usage
Constant temperature control