Features
• High Performance, Low Power AVR® 8-Bit Microcontroller
•  Advanced RISC Architecture
    –  135 Powerful Instructions – Most Single Clock Cycle Execution
    –  32 x 8 General Purpose Working Registers
    –  Fully Static Operation
    –  Up to 16 MIPS Throughput at 16 MHz
    –  On-Chip 2-cycle Multiplier
• High Endurance Non-volatile Memory Segments
    –  64K/128K/256K Bytes of In-System Self-Programmable Flash
    –  4K Bytes EEPROM
    –  8K Bytes Internal SRAM                                                                       8-bit
    –  Write/Erase Cycles:10,000 Flash/100,000 EEPROM
    –  Data retention: 20 years at 85°C/ 100 years at 25°C
    –  Optional Boot Code Section with Independent Lock Bits                                        Microcontroller
         •  In-System Programming by On-chip Boot Program
         •  True Read-While-Write Operation                                                         with
    –  Programming Lock for Software Security
         Endurance: Up to 64K Bytes Optional External Memory Space
•  JTAG (IEEE std. 1149.1 compliant) Interface                                                      64K/128K/256K
    –  Boundary-scan Capabilities According to the JTAG Standard
    –  Extensive On-chip Debug Support                                                              Bytes In-System
    –  Programming of Flash, EEPROM, Fuses, and Lock Bits through the JTAG Interface
• Peripheral Features
    –  Two 8-bit Timer/Counters with Separate Prescaler and Compare Mode                            Programmable
    –  Four 16-bit Timer/Counter with Separate Prescaler, Compare- and Capture Mode
    –  Real Time Counter with Separate Oscillator                                                   Flash
    –  Four 8-bit PWM Channels
    –  Six/Twelve PWM Channels with Programmable Resolution from 2 to 16 Bits
       (ATmega1281/2561, ATmega640/1280/2560)
    –  Output Compare Modulator
    –  8/16-channel, 10-bit ADC (ATmega1281/2561, ATmega640/1280/2560)                              ATmega640/V
    –  Two/Four Programmable Serial USART (ATmega1281/2561,ATmega640/1280/2560)
    –  Master/Slave SPI Serial Interface
    –  Byte Oriented 2-wire Serial Interface                                                        ATmega1280/V
    –  Programmable Watchdog Timer with Separate On-chip Oscillator
    –  On-chip Analog Comparator                                                                    ATmega1281/V
    –  Interrupt and Wake-up on Pin Change
•  Special Microcontroller Features
    –  Power-on Reset and Programmable Brown-out Detection                                          ATmega2560/V
    –  Internal Calibrated Oscillator
    –  External and Internal Interrupt Sources                                                      ATmega2561/V
    –  Six Sleep Modes: Idle, ADC Noise Reduction, Power-save, Power-down, Standby,
       and Extended Standby
• I/O and Packages
    –  54/86 Programmable I/O Lines (ATmega1281/2561, ATmega640/1280/2560)
    –  64-pad QFN/MLF, 64-lead TQFP (ATmega1281/2561)                                               Preliminary
    –  100-lead TQFP, 100-ball CBGA (ATmega640/1280/2560)
    –  RoHS/Fully Green
•  Temperature Range:                                                                               Summary
    –  -40°C to 85°C Industrial
• Ultra-Low Power Consumption
    –  Active Mode: 1 MHz, 1.8V: 500 µA
    –  Power-down Mode: 0.1 µA at 1.8V
•  Speed Grade:
    –  ATmega640V/ATmega1280V/ATmega1281V:
         0 - 4 MHz @ 1.8 - 5.5V, 0 - 8 MHz @ 2.7 - 5.5V
    –  ATmega2560V/ATmega2561V:
         0 - 2 MHz @ 1.8 - 5.5V, 0 - 8 MHz @ 2.7 - 5.5V
    –  ATmega640/ATmega1280/ATmega1281:
         0 - 8 MHz @ 2.7 - 5.5V, 0 - 16 MHz @ 4.5 - 5.5V
    –  ATmega2560/ATmega2561:
         0 - 16 MHz @ 4.5 - 5.5V