Which IC is used to interface RS232 to 8051?

Which IC is used to interface RS232 to 8051?

IC MAX232
IC MAX232, also known as line driver, is very commonly used for this purpose. The simplest connection between a PC and microcontroller requires a minimum of three pins, RxD (receiver, pin2), TxD (transmitter, pin3) and ground (pin5) of the serial port of computer.

What is the use of MAX232 for serial communication in 8051?

MAX232 IC is widely used for serial communication among Microcontrollers & PC. The main function of this integrated circuit is to change the logic levels of TTL/CMOS to RS232 throughout the serial communication process.

What is the use of MAX232?

The MAX232 is an integrated circuit by Maxim Integrated Products that converts signals from a TIA-232 (RS-232) serial port to signals suitable for use in TTL-compatible digital logic circuits. The MAX232 is a dual transmitter / dual receiver that typically is used to convert the RX, TX, CTS, RTS signals.

What is RS232 in microcontroller?

Serial communication (also called RS232 communication) enables a microcontroller to be connected to another microcontroller or to a PC using a serial cable. Some microcontrollers have built-in hardware called USART (universal synchronous-asynchronous receiver-transmitter) to implement a serial communication interface.

Which pin of 8051 should be connected to MAX232?

The interfacing of 8051 with RS232 connectors via the MAX232 chip is the main topic of this section. The 8051 has two pins that are used specifically for transferring and receiving data serially. These two pins are called TxD and RxD and are part of the port 3 group (P3. 0 and P3.

What is UART in 8051?

UART is the abbreviation for Universal Asynchronous Receiver/Transmitter and is a commonly used hardware module for serial communication based on communication protocols like RS232. This chapter discusses how such a device is appropriately interfaced with an 8051 microcontroller.

How many pins are MAX232?

16 pins
Max232 has 16 pins. It requires four external capacitors for its proper configuration. Capacitors can range between 8 uf to 10 uf and are of up to 16 volts. Pin names With functions are listed below.

What is RS-232 and explain its interfacing with 8051?

What is max232 pin?

By EG Projects. Max 232 is an ic(integrated circuit) which converts TTL(Transistor Transistor logic) logic level signal in to its equivalent RS-232c level signal and Rs-232c level to its equivalent TTL level signal.

Which ports of the 8051 are bit addressable?

I/O port bit addresses As we discussed in Chapter 4, the 8051 has four 8-bit I/O ports: PO, PI, P2, and P3. We can access either the entire 8 bits or any single bit without altering the rest.

How many UART are there in 8051?

As we know, 8051 divides crystal frequency by 12 to get a machine cycle frequency of 921.6 kHz. The internal UART block of 8051 divides this machine cycle frequency by 32, which gives the frequency of 28800 Hz which is used by UART….8051 UART Programming.

Is 8051 UART full duplex?

The UART hardware supports full duplex. The UART hardware supports full duplex. In simple words it also means that 8051 supports full duplex…

What is RS232 explain its pin diagram?

CD- Carrier Detect, signal from DCE to DTE. Indicates that modem (DCE) is busy i.e. already using the line. RI- Signal from DCE to DTE, Modem (DCE) detects ring from line….RS232 technical specifications.

What is the use of serial interface 8051 microcontroller?

DATA COMMUNICATION The 8051 microcontroller is parallel device that transfers eight bits of data simultaneously over eight data lines to parallel I/O devices. Parallel data transfer over a long is very expensive. Hence, a serial communication is widely used in long distance communication.

How many serial ports are there in 8051?

Microcontroller 8051 has one serial port for communication.