AT89S52 DS1620 Thermometer Circuit (LCD Display)

This project is to show the temperature information on a graphic LCD screen using the AT89S52 microcontroller, which DS1620 gives digitally.

In addition, it is aimed to notify the user that the ambient temperature increases when the circuit reaches a temperature value above 250C, and a green led lights up when the ambient temperature drops below 250C, in the same way as a red led lights up. A 12 MHz crystal clock oscillator is used to adjust the clock oscillators in the circuit.

The DS1620 is used as an 8-legged temperature sensor and also as a thermostat. The temperature is given as 9-bit data.

Display of circuit temperature is provided using a 128×64 graphic LCD. Microcontrol connection of LCD with D0,D1,D2,D3,D4, D5, D6, D7 is provided. The LCD also displays my school number at the second intervals that I set in the program.

Circuit briefly; DS1620 -> AT89S52 -> GRAPHIC LCD

AT89S52 receiving information from DS1620 displays the information with an LCD screen at the output.
Moreover, the circuit ambient temperature when it reaches a temperature above 250C is no longer a red LED lighting in the same way as the ambient temperature drops below 250C, a green LED lights up to notify user intended. 12 MHz crystal clock oscillator circuit to set the clock oscillator is used.

DS1620 is a temperature sensor and also the legs 8 is used as thermostat. Temperature is given as 9-bit data.

Demonstration of circuit temperature is obtained by using a 128 × 64 graphic LCD. LCD’s D0, D1, D2, D3, D4, D5, D6, D7 is provided with a connection to microcontrollers. Second intervals in the program I set the LCD also seems my school ID.

Thermometer Circuit schematic

AT89S52 DS1620 Thermometer Circuit keil source code and proteus isis simulation schematic files: Prepared by: @Sükriye KAYA Thanks to the People