Which IC is used to interface RS232 with microcontroller?

The receiver input pin receives 232 standard input from the RS232 port and accordingly the corresponding receiver output pin gives the TTL standard output to the Microcontroller. Thus the Max 232 IC can be used as an intermediate connection between Microcontroller and a Computer.

Which IC is used to interface RS232 to 8051?

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.

Which port is used for serial communication in 89c51 controller?

This article describes the interfacing of 8051 microcontroller (AT89C51) with a computer via serial port, RS232.

What is RS-232 interfacing?

The RS-232 interface is the Electronic Industries Association (EIA) standard for the interchange of serial binary data between two devices. It was initially developed by the EIA to standardize the connection of computers with telephone line modems. Three wires are sufficient: send data, receive data, and signal ground.

What is an RS-232 connector?

(Serail port) RS-232 is the name of an interface for the interchange of serial binary data between two devices. RS-232 was commonly used in computers to connect devices like a printer or a telephone modem. In computer terminology the RS-232 connector is often referred to as the “serial port”.

What is RS-232 interface?

How many wires are needed for RS-232?

The RS-232 Standard Although RS-232 does not specify connector configurations, two have become de facto standards: DB25 (a 25-pin connector, in which usually no more than 10 wires are used), and DB-9 (a 9-pin connector, in which usually all 9 wires are used).

How will you interface a stepper motor with 8051 microcontroller?

Stepper motor is brushless DC motor, which can be rotated in small angles, these angles are called steps. Generally stepper motor use 200 steps to complete 360 degree rotation, means its rotate 1.8 degree per step.

What is rs232 interfacing?

How does RS-232 communication work?

In RS232, the data is transmitted serially in one direction over a single data line. In order to establish two way communication, we need at least three wires (RX, TX and GND) apart from the control signals. A byte of data can transmitted at any time provided the previous byte has already been transmitted.

What is RS232 interface?

RS232 is a standard for a serial communication interface which allows to send and receive data via at least three wires. With the RS232 interface it is possible to setup a connection between a microcontroller and a PC (via PC’s COM port) or between two microcontrollers.

What is the difference between microcontroller RS232 and microcontroller microntroller?

The microntroller operates at TTL level (0V = logic 0, +5V logic 1) whereas RS232 uses around +/-12V. A very famous RS232 level converter is the MAX232 chip.

How to use MAX 232 IC as intermediate connection between microcontroller?

The receiver input pin receives 232 standard input from the RS232 port and accordingly the corresponding receiver output pin gives the TTL standard output to the Microcontroller. Thus the Max 232 IC can be used as an intermediate connection between Microcontroller and a Computer.

How to do serial communication via RS232 in C?

The CCS C compiler provides a very simple way to do serial communication via RS232. It hides all the register settings for the user. Only the some parameters have to be provided, the rest is done by the compiler.