Temperature Measuring
A temperature sensor LM35 is interfaced to the 8051 by an ADC0804
The output voltage from the LM34/LM35 is linearly proportional to the measuring temperature
The ADC0804 converts the output voltages from the LM35 into digital signals, which correspond to the measured temperature. Handled by the 8051
Interfacing with the LM35 (Temperature Sensor)
A temperature sensor LM35 is interfaced to the 8051 by an ADC0804
The output voltage from the LM34/LM35 is linearly proportional to the measuring temperature
The ADC0804 converts the output voltages from the LM35 into digital signals, which correspond to the measured temperature. Handled by the 8051
Interfacing with the LM35 (Temperature Sensor)
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The ADC0804 converts the output voltages from the LM35 into digital signals, which correspond to the measured temperature.
Step size of the ADC0804 = (1.28)x(2)/255 = 0.01004V
Clock input to the ADC0804 = clock frequency / 4
If the following data of LM35 are given
the temperature range of the temperature sensor LM35 is -55C to 150C and its output scale is 10mV/C, and the output value of the ADC0804 is 00H when the LM35 senses -55C
then the value output from the ADC0804 for a measuring temperature 100 C is:
the LM35 (Temperature Sensor)
Step size of the ADC0804 = (1.28)x(2)/255 = 0.01004V
Clock input to the ADC0804 = clock frequency / 4
If the following data of LM35 are given
the temperature range of the temperature sensor LM35 is -55C to 150C and its output scale is 10mV/C, and the output value of the ADC0804 is 00H when the LM35 senses -55C
then the value output from the ADC0804 for a measuring temperature 100 C is:
the LM35 (Temperature Sensor)
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