ATmega1281R231 Atmel Corporation, ATmega1281R231 Datasheet - Page 442

• Manufacturer Part Number: ATmega1281R231
• Manufacturer: Atmel Corporation

Specifications of ATmega1281R231

• Flash (kbytes): 128 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: 2.4 GHz
• Max Data Rate (mb/s): 2
• Antenna Diversity: Yes
• External Pa Control: Yes
• Power Output (dbm): 3
• Receiver Sensitivity (dbm): -101
• Receive Current Consumption (ma): 13.2
• Transmit Current Consumption (ma): 14.4
• Link Budget (dbm): 104

2549N–AVR–05/11
15 External Interrupts ............................................................................... 112
16 8-bit Timer/Counter0 with PWM .......................................................... 118
17 16-bit Timer/Counter (Timer/Counter 1, 3, 4, and 5) .......................... 136
18 Timer/Counter 0, 1, 3, 4, and 5 Prescaler ........................................... 169
14.1
14.2
14.3
14.4
15.1
15.2
16.1
16.2
16.3
16.4
16.5
16.6
16.7
16.8
16.9
17.1
17.2
17.3
17.4
17.5
17.6
17.7
17.8
17.9
17.10
17.11
18.1
18.2
18.3
18.4
Interrupt Vectors in ATmega640/1280/1281/2560/2561 ................................105
Reset and Interrupt Vector placement ...........................................................107
Moving Interrupts Between Application and Boot Section .............................109
Register Description ......................................................................................110
Pin Change Interrupt Timing ..........................................................................112
Register Description ......................................................................................113
Features ........................................................................................................118
Overview ........................................................................................................118
Timer/Counter Clock Sources .......................................................................119
Counter Unit ..................................................................................................119
Output Compare Unit .....................................................................................120
Compare Match Output Unit ..........................................................................122
Modes of Operation .......................................................................................123
Timer/Counter Timing Diagrams ...................................................................127
Register Description ......................................................................................129
Features ........................................................................................................136
Overview ........................................................................................................136
Accessing 16-bit Registers ............................................................................138
Timer/Counter Clock Sources .......................................................................141
Counter Unit ..................................................................................................142
Input Capture Unit .........................................................................................143
Output Compare Units ...................................................................................145
Compare Match Output Unit ..........................................................................147
Modes of Operation .......................................................................................148
Timer/Counter Timing Diagrams ...................................................................156
Register Description ......................................................................................158
Internal Clock Source ....................................................................................169
Prescaler Reset .............................................................................................169
External Clock Source ...................................................................................169
Register Description ......................................................................................170
ATmega640/1280/1281/2560/2561
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