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And by using their ADC register we can interface. When we select microcontroller family for making any project, in which we need of an. Interface ADC with serial port (RS) using microcontroller ( AT89C51). This Project include circuit diagram and source code in C. Interfacing of ADC with microcontroller (AT89C51) project including circuit diagram and source code in C.

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ADC is an 8 bit successive approximation analogue to digital converter from National semiconductors.

The circuit initiates the ADC to convert a given analogue inputthen accepts the corresponding digital data and displays qith on the LED array connected at P0. ADC Analog to digital converters find huge application as an intermediate device to convert the signals from analog to digital form.

Interfacing ADC with Microcontroller: Tutorial with Circuit Diagram and Code

You can easily find them in Code. ADC has 8 bit resolution.

What is a software to create that program? We can provide it by using oscillator or by using microcontroller. Interface GPS with Arduino. I tried this circuit, but it is not working as expected.


Interfacing ADC0804 with Serial port (RS232) using 8051 micocontroller (AT89C51)

An ADC has n bit resolution binary form where n can be 8,10,12,16 or even 24 bits. If you have any queries, doubts or feedback on this tutorial please share in our onterfacing forum. Some external ADC chips are ,, and there are many more. Various sensors like temperature, pressure, force etc This Code is only visible to Registered users.

Choosing Motor For Robots. The output pins of the ADC are connected to port P1 of the microcontroller. If you want us to write tutorial for more devices please let us know in the forum.

As we have decided to make Chip select pin as low so we need not to bother about the CS signal in the timing diagram.

How to interface ADC0804 using 8051 microcontroller (AT89C51)

Log in or register to post Comment. Typical applications include sound processing, temperature processing etc.

To use the internal clock a capacitor and resistor is connected to pin 19 and 4 as shown in the circuit diagram. Retrieved from ” http: Your email address will not be published. What is Web Browser. Interfaving digital signals are used for further processing by the digital processors. CS pin of ADC is directly connected to ground.


The higher wiyh ADC gives smaller step size. It also has an internal clock. If we give 5v to pin 9, will ADC work? This device has three channel address line namely: This pin iterfacing low when the conversion is over. Interfacing ADC to Vin, which is the input pin, is connected to a preset to provide analog input. Actually the code u have posted is not working i guess due to the initialization i think.

ADC Interfacing with microcontroller (AT89C51) Project

This circuit demonstrates the principle and operation of interfacing a simple ADC using microcontroller AT89C ADC can be given clock from external source. Also you can see which signals are to be asserted and at what time to start a conversion.

Below steps are for starting an ADC conversion. A 9 volt battery and a 5 volt voltage regulator namely are used for powering intrrfacing circuit.