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ATMEGA1281解密

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  ATMEGA1281 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
  Non-volatile Program and Data Memories
  – 64K/128K/256K Bytes of In-System Self-Programmable Flash Endurance: 10,000 Write/Erase Cycles
  – Optional Boot Code Section with Independent Lock Bits In-System Programming by On-chip Boot Program True Read-While-Write Operation
  – 4K Bytes EEPROM Endurance: 100,000 Write/Erase Cycles
  – 8K Bytes Internal SRAM
  – Up to 64K Bytes Optional External Memory Space
  – Programming Lock for Software Security
  JTAG (IEEE std. 1149.1 compliant) Interface
  – Boundary-scan Capabilities According to the JTAG Standard
  – Extensive On-chip Debug Support
  – 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
  – Four 16-bit Timer/Counter with Separate Prescaler, Compare- and Capture Mode
  – Real Time Counter with Separate Oscillator
  – 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)
  – Two/Four Programmable Serial USART (ATmega1281/2561,ATmega640/1280/2560)
  – Master/Slave SPI Serial Interface
  – Byte Oriented 2-wire Serial Interface
  – Programmable Watchdog Timer with Separate On-chip Oscillator
  – On-chip Analog Comparator
  – Interrupt and Wake-up on Pin Change
  Special Microcontroller Features
  – Power-on Reset and Programmable Brown-out Detection
  – Internal Calibrated Oscillator
  – External and Internal Interrupt Sources
  – 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)
  – 100-lead TQFP, 100-ball CBGA (ATmega640/1280/2560)
  – RoHS/Fully Green
  Temperature Range:
  – -40°C to 85°C Industrial
  Ultra-Low Power Consumption
  – Active Mode: 1 MHz, 1.8V: 510 μA
  – Power-down Mode: 0.1 μA at 1.8V
  Speed Grade (see “Maximum speed vs. VCC” on page 377):
  – 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