Pin Number. Pin Name. Chip Select CS. Chip select is used if more than 1 ADC module is used. By default grounded.
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ADC is an 8 bit successive approximation analogue to digital converter from National semiconductors. The pin out diagram of ADC is shown in the figure below. The figure above shows the schematic for interfacing ADC to The circuit initiates the ADC to convert a given analogue input , then accepts the corresponding digital data and displays it on the LED array connected at P0.
For example, if the analogue input voltage Vin is 5V then all LEDs will glow indicating in binary which is the equivalent of in decimal. AT89s51 is the microcontroller used here. Resistors R1 to R8 are current limiting resistors. In simple words P1 of the microcontroller is the input port and P0 is the output port. Preset resistor R10 forms a voltage divider which can be used to apply a particular input analogue voltage to the ADC.
Crystal X1 and capacitors C2,C3 are associated with the clock circuitry of the microcontroller. According to the 89S52 datasheet, to make P1 pins as input, we need to send to P1 before we can read it. I tried this circuit, but it is not working as expected. Any advice? I suggest T-junction with pendenstial sign traffic ligth with counter, heart beat rate,Dot matrix display all these with in assembly language.
Author admin. Moisture sensing automatic plant watering system using December 19, Heart rate monitor with sms alert. August 10, Kris 2 years ago. Rakshit 6 years ago. If we give 5v to pin 9, will ADC work? Munir Ahmad 7 years ago. Submit Type above and press Enter to search. Press Esc to cancel.
Interfacing ADC to 8051
ADC804 Datasheet PDF
ADC804 Datasheet PDF - Burr-Brown -> Texas Instruments