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ATmega16 датащи(PDF) 144 Page - ATMEL Corporation

номер детали ATmega16
подробное описание детали  8-bit Microcontroller with 16K Bytes In-Syustem Programmable Flash
PDF  357 Pages
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производитель  ATMEL [ATMEL Corporation]
домашняя страница  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

ATmega16 датащи(HTML) 144 Page - ATMEL Corporation

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2466S–AVR–05/09
ATmega16(L)
USART
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 69. CPU accessible I/O
Registers and I/O pins are shown in bold.
Figure 69. USART Block Diagram
(1)
Note:
1. Refer to Figure 1 on page 2, Table 33 on page 65, and Table 27 on page 60 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



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