ATMEGA8535-16MUR Atmel, ATMEGA8535-16MUR Datasheet - Page 145
ATMEGA8535-16MUR
Manufacturer Part Number
ATMEGA8535-16MUR
Description
MCU AVR 8K FLASH 16MHZ 44QFN
Manufacturer
Atmel
Series
AVR® ATmegar
Datasheet
1.ATMEGA8535L-8AU.pdf
(321 pages)
Specifications of ATMEGA8535-16MUR
Core Processor
AVR
Core Size
8-Bit
Speed
16MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
32
Program Memory Size
8KB (4K x 16)
Program Memory Type
FLASH
Eeprom Size
512 x 8
Ram Size
512 x 8
Voltage - Supply (vcc/vdd)
4.5 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
*
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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USART
Overview
2502K–AVR–10/06
The Universal Synchronous and Asynchronous serial Receiver and Transmitter
(USART) is a highly flexible serial communication device. The main features are:
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A simplified block diagram of the USART Transmitter is shown in Figure 69. CPU acces-
sible I/O Registers and I/O pins are shown in bold.
Figure 69. USART Block Diagram
Note:
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
1. Refer to Figure 1 on page 2, Table 34 on page 66, and Table 28 on page 62 for
USART pin placement.
UCSRA
TRANSMIT SHIFT REGISTER
RECEIVE SHIFT REGISTER
BAUD RATE GENERATOR
UDR (Transmit)
UDR (Receive)
UBRR[H:L]
(1)
UCSRB
GENERATOR
SYNC LOGIC
RECOVERY
RECOVERY
CHECKER
PARITY
PARITY
CLOCK
DATA
OSC
ATmega8535(L)
Clock Generator
CONTROL
CONTROL
CONTROL
CONTROL
CONTROL
Transmitter
PIN
PIN
PIN
TX
RX
Receiver
UCSRC
XCK
TxD
RxD
145
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