ATmega1281R231 Atmel Corporation, ATmega1281R231 Datasheet - Page 353

• 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

Figure 30-11. Serial Programming Instruction example
30.8.4
2549N–AVR–05/11
Byte 1
Serial Programming Characteristics
Load Program Memory Page (High/Low Byte)/
Load EEPROM Memory Page (page access)
Bit 15 B
Byte 2
Adr M M S S B
A
Within the same page, the low data byte must be loaded prior to the high data byte.
After data is loaded to the page buffer, program the EEPROM page, see
For characteristics of the Serial Programming module, see
375.
Figure 30-12. Serial Programming Waveforms
SERIAL DATA OUTPUT
SERIAL CLOCK INPUT
Byte 3
SERIAL DATA INPUT
Adr LSB
Page Offset
SAMPLE
0
(MOSI)
(MISO)
(SCK)
Serial Programming Instruction
Byte 4
Program Memory/
EEPROM Memory
Page Buffer
MSB
MSB
Page N-1
Page 0
Page 1
Page 2
ATmega640/1280/1281/2560/2561
Byte 1
Page Number
Bit 15 B
Write Program Memory Page/
Write EEPROM Memory Page
Byte 2
Adr MSB
“SPI Timing Characteristics” on page
Byte 3
A A dr r L L SB B
Figure
0
30-11.
LSB
LSB
Byte 4
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