How does RFID interfacing with 8051 microcontroller work?

How does RFID interfacing with 8051 microcontroller work?

RFID Interfacing with 8051 Microcontroller Radio Frequency Identification (RFID) uses radio frequency to read information stored in a RFID card or tag. In this project we are going to Interface EM-18 RFID reader with 8051 microcontroller and display RFID card number on 16*2 LCD display.

How is the ID code in the RFID card read?

The unique ID code in the RFID card is read by the circuit and displayed on the 16×2 LCD display. Tx pin of the RFID module is connected to Port 3.5 of the microcontroller. The microcontroller receives data from the RFID module through this channel. Switch S1, capacitor C1 and resistor R1 forms the reset circuit.

Which is access control system uses 8051 microcontroller?

RFID Security Access Control System using 8051 Microcontroller is an RFID Technology based security system. Using this system, authorization of personnel is carried out with an RFID card and only those with access can enter a secured area. The security of any organisation is a priority for the authorities.

What is cmdwrt function in 8051 microcontroller?

Cmdwrt function is used to send commands to 16*2 lcd display. datawrt function is used to send data to 16*2 lcd display. Rxdata function is used to receive data from serial port. In this part of the code we are going to configure 8051 microcontroller for serial communication.

How big is the 8051 microcontroller in bytes?

8051 microcontroller is a 8 bit microcontroller which has 128 bytes of on chip RAM, 4K bytes of on chip ROM, two timers, one serial port and four 8bit ports. 8052 microcontroller is an extension of microcontroller. The table below shows the comparison of 8051 family members.

How is the TX pin connected to the microcontroller?

Tx pin of the RFID module is connected to Port 3.5 of the microcontroller. The microcontroller receives data from the RFID module through this channel. Switch S1, capacitor C1 and resistor R1 forms the reset circuit. Capacitor C2, C3 and crystal X1 are associated with the reset circuit.