ATmega1281R231 Atmel Corporation, ATmega1281R231 Datasheet - Page 39

• 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

12.12 Rev. 2549C-09/05
12.13 Rev. 2549B-05/05
12.14 Rev. 2549A-03/05
2549NS–AVR–05/11
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Updated Speed Grade in section
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clock must be larger than 2 CPU cycles.
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JTAG ID/Signature for ATmega640 updated: 0x9608.
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Initial version.
“Resources” on page
“SPI – Serial Peripheral Interface” on page
“Bit Rate Generator Unit” on page
“Maximum speed vs. V
“Ordering Information” on page
“Packaging Information” on page
“Errata” on page
Table 13-7 on page
“Serial Programming Instruction set” on page
“Errata” on page
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ATmega640/1280/1281/2560/2561
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CC
“Features” on page
” on page
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25. Package 64M1 replaced by 64M2.
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195. In Slave mode, low and high period SPI
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