Prof Afonso Ferreira Miguel

Slides:

Advertisements

Similar presentations

Review: Interrupts & Timers

Advertisements

4-1 Timers Timers can be used for  timing  event counting  pulse width measurement  pulse generation  frequency multiplication There are 8 Timers.

ECT 357 Ch 18 UART. Today’s Quote: Be careful that your marriage doesn’t become a duel instead of a duet. Be careful that your marriage doesn’t become.

The 8051 Microcontroller Chapter 5 SERIAL PORT OPERATION.

Eng. Husam Alzaq The Islamic Uni. Of Gaza

USART and Asynchrono us Communica tion The USART is used for synchronous and asynchronous serial communication. USART = Universal Synchronous/Asynchronous.

7-1 Digital Serial Input/Output Two basic approaches  Synchronous shared common clock signal all devices synchronised with the shared clock signal data.

Chapter 6 Serial Communications Objectives Introduce the RS232 standard and position it within the crowded field of serial communications standards. Configure.

Embedded Systems UNIT 3. Pin Details of 8051 Pins 1-8: Port 1 Each of these pins can be configured as an input or an output. Pin 9: The positive voltage.

Lecture 10 Serial Communication.

Chapter 6 Serial Communications Objectives Introduce the RS232 standard and position it within the crowded field of serial communications standards. Configure.

Microcontroller 8051.

Serial Peripheral Interface Module MTT M SERIAL PERIPHERAL INTERFACE (SPI)

ECE/CS-352: Embedded Microcontroller Systems Embedded Microcontroller Systems.

The 8051 Microcontroller and Embedded Systems

SC200x Peripherals Broadband Entertainment Division DTV Source Applications July 2001.

MICROCONTROLERUL ONIGA ŞTEFAN Curs 1999/ MICROCONTROLERE - Calculator pe un cip deoarece el conţine pe lângă CPU şi memorie şi interfeţe de.

S4525A Peripherals & Enhanced FLASH 1 © 1999 Microchip Technology Incorporated. All Rights Reserved. S4525A Peripherals & Enhanced FLASH 1 Peripherals.

Lecture Set 9 MCS-51 Serial Port.

Universal Synchronous/Asynchronous Receiver/Transmitter (USART)

Devices and Buses for Device Networks By: Prof. Mahendra B. Salunke Asst. Prof., Department of Computer Engg, SITS, Pune-41 URL:

“Describe the overview of hardware interfacing and the serial communication interface. Describe the PIC18 connections to RS232. Explain the serial port.

Universal Asynchronous Receiver/Transmitter (UART)

CHAPTER SERIAL PORT PROGRAMMING. Basics of Serial Communication Computers transfer data in two ways: ◦ Parallel  Often 8 or more lines (wire conductors)

Serial Communication Lec note 9.

Example. SBUF Register SCON Register(1) SCON Register(2)

 8251A is a USART (Universal Synchronous Asynchronous Receiver Transmitter) for serial data communication.  Programmable peripheral designed for synchronous.

NS Training Hardware. Serial Controller - UART.

MCS51 - lecture 4. Lecture 3 1/27 Serial ports MCS51 Standard SIO Some extensions and modifications.

Atmel Atmega128 Overview ALU Particulars RISC Architecture 133, Mostly single cycle instructions 2 Address instructions (opcode, Rs, Rd, offset) 32x8 Register.

Universal Asynchronous Receiver/Transmitter (UART)

ATtiny23131 A SEMINAR ON AVR MICROCONTROLLER ATtiny2313.

8051 Aula 02 Prof Afonso Ferreira Miguel. Microcontrolador 8051 (MCS-51)  Timers do MCS51 Two 16-bit Counter/Timers: Two 16-bit Counter/Timers: Up counters,

8051SERIAL PORT PROGRAMMING

Communicating. The ATmega16 communicates through one of the following ways: Serial Peripheral Interface (SPI) Universal Synchronous and Asynchronous serial.

Timer Programming in Assembly and C Prepared By:

The HCS12 SCI Subsystem A HCS12 device may have one or two serial communication interface. These two SCI interfaces are referred to as SCI0 and SCI1. The.

Serial I/O Port.

Embedded Microcontroller Systems

Chapter 6 Serial Communications

Serial mode of data transfer

Embedded Microcontroller Systems

Source: Serial Port Source:

Chapter 10 PIC18 Serial Port Programming in Assembly

SERIAL PORT PROGRAMMING

Hardware Source: ttp:// under

Introduction to Micro Controllers & Embedded System Design I/O Processing and Serial Port Operation Department of Electrical & Computer Engineering Missouri.

Data bus CPU General Purpose microprocessor RAM ROM I/O Port Timer

Source: Serial Port Source:

USART Universal Synchronous Asynchronous Receiver Transmitter

UART Serial Port Programming

Introduction to Micro Controllers & Embedded System Design Timer Operation Department of Electrical & Computer Engineering Missouri University of Science.

Serial Communication Interface: Using 8251

Serial Communication Interface

The 8051 Microcontroller (8 bit )

NS Training Hardware.

8051 Microcontroller.

JANAKIRAMAN E G S PILLAY ARTS AND SCIENCE COLLAGE NAGAPATTINAM DEPARTMENT OF PHYSICS.

AVR – ATmega103(ATMEL) Architecture & Summary

8051 Micro Controller.

The 8051 Microcontroller (8 bit )

Source: Serial Port Source:

CHAPTER SERIAL PORT PROGRAMMING. Basics of Serial Communication Computers transfer data in two ways: ◦ Parallel  Often 8 or more lines (wire.

EUSART Serial Communication.

Serial Communication 19th Han Seung Uk.

Source: Serial Port Source:

PIC Serial Port Interfacing

8051SERIAL PORT PROGRAMMING

PIC Serial Port Interfacing

Presentation transcript:

Prof Afonso Ferreira Miguel USART 8051 Prof Afonso Ferreira Miguel

Microcontrolador 8051 (MCS-51) Interface Serial Full duplex UART. Four modes of operation: Synchronous serial I/O expansion. Asynchronous serial I/O with variable baud rate. Nine bit mode with variable baud rate. Nine bit mode with fixed baud rate. 10 or 11 bit frames. Interrupt driven or polled operation. Registers: SCON - Serial port control register. SBUF - Read received data. - Write data to be transmitted. PCON - SMOD bit.

Microcontrolador 8051 (MCS-51) Interface Serial: Modos TXD and RXD are the serial output and input pins (Port 3, bits 1 and 0). Mode 0: Shift Register Mode. Serial data is transmitted/received on RXD. TXD outputs shift clock. Baud Rate is 1/12 of clock frequency; Mode 1: 10-bits transmitted or received. Start (0), 8 data bits (LSB first), and a stop bit (1). Baud Rate Clock is variable using Timer 1 overflow or external count input. Can go up to 104.2KHz (20MHz osc.); Mode 2: 11-bits transmitted or received. Start (0), 8 data bits (LSB first), programmable 9th bit, and stop bit (1). Baud Rate programmable to either 1/32 or 1/64 oscillator frequency (625KHz for 20MHz osc.); Mode 3: 11-bit mode. 9 data bits; Baud Rate variable using Timer 1 overflow or external input. 104.2 KHz max. (20 MHz osc.).

Microcontrolador 8051 (MCS-51) SCON

Microcontrolador 8051 (MCS-51)

Microcontrolador 8051 (MCS-51) Configuração

Microcontrolador 8051 (MCS-51) Rotinas típicas para TX e RX um byte

Microcontrolador 8051 (MCS-51) Rotina típica para transmitir uma string

Microcontrolador 8051 (MCS-51) Utilizando a rotina anterior: Definindo a string em memória