ATmega32A datasheet(147/352 Pages) ATMEL

Part #	ATmega32A

Description	8-bit Microcontroller with 32K Bytes In-System Programmable Flash

PDF	352 Pages

Scroll/Zoom	100%

Manufacturer	ATMEL [ATMEL Corporation]

Direct Link	http://www.atmel.com

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147 / 352 page

147

8155B–AVR–07/09

ATmega32A

19. USART

19.1

Features

• Full Duplex Operation (Independent Serial Receive and Transmit Registers)

• Asynchronous or Synchronous Operation

• Master or Slave Clocked Synchronous Operation

• High Resolution Baud Rate Generator

• Supports Serial Frames with 5, 6, 7, 8, or 9 Data Bits and 1 or 2 Stop Bits

• Odd or Even Parity Generation and Parity Check Supported by Hardware

• Data OverRun Detection

• Framing Error Detection

• Noise Filtering Includes False Start Bit Detection and Digital Low Pass Filter

• Three Separate Interrupts on TX Complete, TX Data Register Empty, and RX Complete

• Multi-processor Communication Mode

• Double Speed Asynchronous Communication Mode

19.2

Overview

The Universal Synchronous and Asynchronous serial Receiver and Transmitter (USART) is a

highly flexible serial communication device. A simplified block diagram of the USART transmitter

is shown in Figure 19-1. CPU accessible I/O Registers and I/O pins are shown in bold.

ATmega32A Datasheet(PDF) 147 Page - ATMEL Corporation