Electronic Components Datasheet Search
  English  ▼

X  

Preview PDF HTML

ATMEGA649 Datasheet(PDF) 161 Page - ATMEL Corporation

Part # ATMEGA649
Description  8-bit Microcontroller with In-System Programmable Flash
PDF  375 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  ATMEL [ATMEL Corporation]
Direct Link  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

ATMEGA649 Datasheet(HTML) 161 Page - ATMEL Corporation

Back Button ATMEGA649 Datasheet HTML 157Page - ATMEL Corporation ATMEGA649 Datasheet HTML 158Page - ATMEL Corporation ATMEGA649 Datasheet HTML 159Page - ATMEL Corporation ATMEGA649 Datasheet HTML 160Page - ATMEL Corporation ATMEGA649 Datasheet HTML 161Page - ATMEL Corporation ATMEGA649 Datasheet HTML 162Page - ATMEL Corporation ATMEGA649 Datasheet HTML 163Page - ATMEL Corporation ATMEGA649 Datasheet HTML 164Page - ATMEL Corporation ATMEGA649 Datasheet HTML 165Page - ATMEL Corporation Next Button
Zoom Inzoom in Zoom Outzoom out
 161 / 375 page
background image
161
ATmega329/3290/649/6490
2552H–AVR–11/06
USART0
The Universal Synchronous and Asynchronous serial Receiver and Transmitter
(USART) is a highly flexible serial communication device. The main features are:
• 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
Overview
A simplified block diagram of the USART Transmitter is shown in Figure 70. CPU acces-
sible I/O Registers and I/O pins are shown in bold.
The Power Reduction USART bit, PRUSART0, in “PRR – Power Reduction Register” on
page 38 must be written to zero to enable USART0 module.
Figure 70. USART Block Diagram
(1)
Note:
1. Refer to Figure 1 on page 2, Figure 2 on page 3, “Alternate Functions of Port E” on
page 75 for USART pin placement.
PARITY
GENERATOR
UBRR[H:L]
UDR (Transmit)
UCSRA
UCSRB
UCSRC
BAUD RATE GENERATOR
TRANSMIT SHIFT REGISTER
RECEIVE SHIFT REGISTER
RxD
TxD
PIN
CONTROL
UDR (Receive)
PIN
CONTROL
XCK
DATA
RECOVERY
CLOCK
RECOVERY
PIN
CONTROL
TX
CONTROL
RX
CONTROL
PARITY
CHECKER
OSC
SYNC LOGIC
Clock Generator
Transmitter
Receiver



Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100  ...More


Datasheet Download

Go To PDF Page


Link URL



Does ALLDATASHEET help your business so far?  [ DONATE ] 

About Alldatasheet   |   Advertisement   |   Contact us   |   Privacy Policy   |   Link to Datasheet    |   Link Exchange   |   Manufacturer List
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com