ADC0808 INTERFACING WITH 8051 PDF

For interfacing these sensors to microcontrollers we require to convert the analog output of these sensors to digital so that the controller can read it. Why we are using ADC for Microcontroller? So we have to use external ADC. There are many ADCs available. ADC is a Successive approximation type with 8 channels i.

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But there may a situation where we have to deal with external inputs such as analog signals. All most all the input signals from physical sensors are of analog signals. In such cases, we can interface the microcontroller with an external device such as an ADC to convert the analog signal to a digital signal.

Because our microcontrollers can only understand 0 and 1. In this article, we look into the details of ADC interfacing with In the present time, there are lots of microcontrollers in the market which has inbuilt ADC with one or more channels, E. And by using their ADC registers we can interface.

It can measure up to eight ADC values from 0 to 5 volt since it has eight channels. That is, for every increase of ADC needs an external clock to operate. The ADC needs some specific control signals for its operations like start conversion and bring data to output pins. When the conversion is complete the EOC pins go low to indicate the end of a conversion and that the data is ready to be picked up.

A High — Low transition on start to start the conversion. Wait for End of cycle EOC pin to become high. Make Output Enable pin High. It is connected to channel 0 of the ADC We have connected the output of ADC to port 1.

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Interfacing ADC0808 To 8051

ADC Free running Circuit Normally analogue-to-digital converter ADC needs interfacing through a microprocessor to convert analogue data into digital format. This requires hardware and necessary software, resulting in increased complexity and hence the total cost. The circuit of A-to-D converter shown here is configured around ADC , avoiding the use of a microprocessor. It works on the principle of successive approximation. It has a total of eight analogue input channels, out of which any one can be selected using address lines A, B and C. However, the circuit shown here is built to operate in its continuous mode without using any microprocessor.

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ADC Interfacing with 8051

I am from India doing my Masters in Computer Applications.. There are 6 semesters in this masters program and in the 6th sem I have to submit a project.. Where everybody goes in for a commercial management system as their project Library Mgt System, Billing system etc. I decided to venture into robotics.

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8051 – ADC0804 Interfacing

But there may a situation where we have to deal with external inputs such as analog signals. All most all the input signals from physical sensors are of analog signals. In such cases, we can interface the microcontroller with an external device such as an ADC to convert the analog signal to a digital signal. Because our microcontrollers can only understand 0 and 1. In this article, we look into the details of ADC interfacing with In the present time, there are lots of microcontrollers in the market which has inbuilt ADC with one or more channels, E.

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Interfacing ADC to 8051

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