ADC0804 INTERFACING WITH 8051 MICROCONTROLLER PDF

As shown in the typical circuit, ADC can be interfaced with any microcontroller. You need a minimum of 11 pins to interface ADC, eight for data pins and 3 for control pins. As shown in the typical circuit the chip select pin can be made low if you are not using the microcontroller port for any other peripheral multiplexing. There is a universal rule to find out how to use an IC. All you need is the datasheet of the IC you are working with and take a look at the timing diagram of the IC which shows how to send the data, which signal to assert and at what time the signal should be made high or low etc.

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ADC interfacing with Analog to digital converters find huge application as an intermediate device to convert the signals from analog to digital form. These digital signals are used for further processing by the digital processors. Various sensors like temperature, pressure, force etc. So we have to use external ADC. There are many ADCs available. In this post we will see ADC In our next post we will see ADC This will bring the converted value to the 8 data output pins of ADC The LM35 series are precision integrated-circuit temperature sensors, whose output voltage is linearly proportional to the Celsius Centigrade temperature.

Low cost is assured by trimming and calibration at the wafer level. It can be used with single power supplies, or with plus and minus supplies. The LM35D is also available in an 8-lead surface mount small outline package and a plastic TO package. Temperature Sensor:. You can download this code on Github… To download Click Here.

Like this you can interface any analog sensor. If you have any doubts mail us or comment below. This site uses Akismet to reduce spam. Learn how your comment data is processed. The ADC is a converter from analog to digital 8 bits. The step size is adjusted by setting the reference voltage in pin9 the reference input voltage can be adjusted to allow encoding any smaller range for the entire 8-bit resolution analog voltage.

When the voltage reference pin is not connected to the ADC, the reference voltage defaults to the operating voltage, ie, Vcc. The step size is To establish a determined voltage level as the reference value, this pin is connected to half the voltage. ADC also need a clock to operate. The conversion time of the analog value to a digital value depends on the clock source. An external clock can be given at the Clock IN pin.

ADC also has an inbuilt clock which can be used in absence of external clock. Features 0V to 5V analog input voltage range with single 5V supply Compatible with microcontrollers, access time is ns Easy interface to all microprocessors Logic inputs and outputs meet both MOS and TTL voltage level specifications Works with 2.

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Interfacing ADC 0804 with 8051 Microcontroller

ADC interfacing with Analog to digital converters find huge application as an intermediate device to convert the signals from analog to digital form. These digital signals are used for further processing by the digital processors. Various sensors like temperature, pressure, force etc.

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ADC Interfacing with 8051

The data we process in a microcontroller normally deals with digital signals. 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 ADC0804 with 8051

Adc Pin Out and Working. Apply 1. This is the reference voltage for ADC This is the voltage by which the step size of the ADC will be set to 10 mv. Lm35 Pin Out and temperature conversion formula.

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