ADC 0808 INTERFACE WITH 8051

                                    ADC0808 is an 8 bit analog to digital converter with eight input analog channels, i.e., it can take eight different analog inputs. The input which is to be converted to digital form can be selected by using three address lines. The voltage reference can be set using the Vref+ and Vref- pins. The step size is decided based on set reference value. Step size is the change in analog input to cause a unit change in the output of ADC. The default step size is 19.53mV corresponding to 5V reference voltage. ADC0808 needs an external clock to operate unlike ADC0804 which has an internal clock. 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 goes low to indicate the end of conversion and data ready to be picked up.

ADC 0808 is interfaced with 8051 to read more than one analog input. here we can read 8 analog inputs. 

                    we read analog inputs using adc0808 and displaying value in LCD.

This code is  written in Embedded C and compiled  in keil uvision 3 and simulated in proteus simulation software.

Here you can get Code, circuit, and simulation:

For Embedded C  Code click here

For Protues Simulation Click Here

For Hex Code Click Here

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