Hi Venu,
I can give you a rough idea. Your ADC has 8 digital outputs, means it will convert any input voltage to its equivalent 8 bit digital value between 0 to 255, and that based on the reference voltage provided on the reference pin.
Just connect the 8 pins to any one of the port. Set a timer for particular time delay. Each time when the timer fires read the 8 bit value from the port.