ATmega1281R231 Atmel Corporation, ATmega1281R231 Datasheet - Page 37

• 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

12.4
12.5
12.6
12.7
2549NS–AVR–05/11
Rev. 2549K-01/07
Rev. 2549J-09/06
Rev. 2549I-07/06
Rev. 2549H-06/06
7.
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7.
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1.
2.
3.
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2.
3.
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Updated ordering code in
Updated
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Updated Assembly code example in
bit or enabling the ADC, the user must always allow the reference to start up before the output
from the Analog Comparator or ADC is used. To reduce power consumption in Power-down
mode, the user can avoid the three conditions above to ensure that the reference is turned off
before entering Power-down mode.” on page
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Updated code example in
Updated
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Updated code example in
109.
Updated
Updated
Updated
Updated
Added
Updated
on page
20-6 on page 188
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Added
“Data Retention” on page
Table 31-1 on page
148,
“SPI Timing Characteristics” on page
“ADC Characteristics – Preliminary Data” on page
Table 1-1 on page
“Pin Descriptions” on page
“Stack Pointer” on page
“Bit 1 – EEPE: EEPROM Programming Enable” on page
“EIMSK – External Interrupt Mask Register” on page
Figure 26-8 on page
“DC Characteristics” on page
“” on page
“Timer/Counter Prescaler” on page
“Device Identification Register” on page
“Signature Bytes” on page
“Instruction Set Summary” on page
“Fast PWM Mode” on page
“” on page
“OSCCAL – Oscillator Calibration Register” on page
Table 16-3 on page
Table 17-4 on page
and
46.
46.
Table 20-8 on page
“ATmega640” on page
“USART Initialization” on page
“PCIFR – Pin Change Interrupt Flag Register” on page
“Moving Interrupts Between Application and Boot Section” on page
ATmega640/1280/1281/2560/2561
371.
3.
129,
284.
11.
16.
159,
Table 16-6 on page
338.
7.
“Thus, when the BOD is not enabled, after setting the ACBG
150.
367.
Table 17-5 on page
189.
186.
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63.
375.
20.
303.
130,
210.
377.
160,
Table 16-8 on page
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115.
Table 20-3 on page
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131,
116.
Table 17-2
187,
Table
37