ATmega2561R212 Atmel Corporation, ATmega2561R212 Datasheet - Page 443
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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2549N–AVR–05/11
19 Output Compare Modulator (OCM1C0A) ........................................... 172
20 8-bit Timer/Counter2 with PWM and Asynchronous Operation ...... 174
21 SPI – Serial Peripheral Interface ......................................................... 195
22 USART ................................................................................................... 205
23 USART in SPI Mode ............................................................................. 232
19.1
19.2
20.1
20.2
20.3
20.4
20.5
20.6
20.7
20.8
20.9
20.10
21.1
21.2
22.1
22.2
22.3
22.4
22.5
22.6
22.7
22.8
22.9
22.10
23.1
23.2
23.3
23.4
23.5
23.6
Overview ........................................................................................................172
Description .....................................................................................................172
Overview ........................................................................................................174
Timer/Counter Clock Sources .......................................................................175
Counter Unit ..................................................................................................175
Modes of Operation .......................................................................................176
Output Compare Unit .....................................................................................180
Compare Match Output Unit ..........................................................................182
Timer/Counter Timing Diagrams ...................................................................183
Asynchronous Operation of Timer/Counter2 .................................................184
Timer/Counter Prescaler ...............................................................................186
Register Description ......................................................................................187
SS Pin Functionality ......................................................................................200
Register Description ......................................................................................202
Features ........................................................................................................205
Clock Generation ...........................................................................................206
Frame Formats ..............................................................................................209
USART Initialization .......................................................................................210
Data Transmission – The USART Transmitter ..............................................212
Data Reception – The USART Receiver .......................................................214
Asynchronous Data Reception ......................................................................218
Multi-processor Communication Mode ..........................................................221
Register Description ......................................................................................222
Examples of Baud Rate Setting .....................................................................227
Overview ........................................................................................................232
USART MSPIM vs. SPI .................................................................................232
SPI Data Modes and Timing ..........................................................................233
Frame Formats ..............................................................................................234
Data Transfer .................................................................................................236
USART MSPIM Register Description ............................................................237
ATmega640/1280/1281/2560/2561
iv
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