ATmega2561R212 Atmel Corporation, ATmega2561R212 Datasheet - Page 205
ATmega2561R212
Manufacturer Part Number
ATmega2561R212
Description
Manufacturer
Atmel Corporation
Specifications of ATmega2561R212
Flash (kbytes)
256 Kbytes
Max. Operating Frequency
16 MHz
Max I/o Pins
54
Spi
3
Twi (i2c)
1
Uart
2
Adc Channels
8
Adc Resolution (bits)
10
Adc Speed (ksps)
15
Analog Comparators
1
Crypto Engine
AES
Sram (kbytes)
8
Eeprom (bytes)
4096
Operating Voltage (vcc)
1.8 to 3.6
Timers
6
Frequency Band
700/800/900MHz
Max Data Rate (mb/s)
1
Antenna Diversity
No
External Pa Control
Yes
Power Output (dbm)
10
Receiver Sensitivity (dbm)
-110
Receive Current Consumption (ma)
9.0
Transmit Current Consumption (ma)
18 at 5dBm
Link Budget (dbm)
120
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22. USART
22.1
Overview
2549N–AVR–05/11
Features
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The Universal Synchronous and Asynchronous serial Receiver and Transmitter (USART) is a
highly flexible serial communication device.
The ATmega640/1280/2560 has four USART’s, USART0, USART1, USART2, and USART3.
The functionality for all four USART’s is described below. USART0, USART1, USART2, and
USART3 have different I/O registers as shown in
A simplified block diagram of the USART Transmitter is shown in
accessible I/O Registers and I/O pins are shown in bold.
The Power Reducion USART0 bit, PRUSART0, in
page 56
The Power Reducion USART1 bit, PRUSART1, in
page 57
The Power Reducion USART2 bit, PRUSART2, in
page 57
The Power Reducion USART3 bit, PRUSART3, in
page 57
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
must be disabled by writing a logical zero to it.
must be disabled by writing a logical zero to it.
must be disabled by writing a logical zero to it.
must be disabled by writing a logical zero to it.
ATmega640/1280/1281/2560/2561
“Register Summary” on page
“PRR0 – Power Reduction Register 0” on
“PRR1 – Power Reduction Register 1” on
“PRR1 – Power Reduction Register 1” on
“PRR1 – Power Reduction Register 1” on
Figure 22-1 on page
411.
206. CPU
205
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