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ATmega128, ATmega1281, ATmega2561   Atmel 8Bit AVR-Flash Microcontroller, AVR 8-Bit RISC

Category: Development Board, AVR Microcontroller, General Chip Description, ATmega128, ATmega1281, ATmega2561
Keywords: Microcontroller, Development Board, Prototype Board, Chip Description, Chip Features, AVR ATmega128-16AU, ATmega1281-16AU, ATmega2561-16AU

Features Atmel 8Bit AVR-Flash Microcontroller, AVR 8-Bit RISC

ATmega128-16AI / ATmega128-16AU (Pb free, ROHS) / ATmega1281 features
ATmega2561-16AI / ATmega2561-16AU (Pb free, ROHS) features

• 128KB FLASH for ATmega128
• 256KB FLASH for ATmega2561
• 4 KB SRAM (internal RAM)
• 4 KB EEPROM
• 64-pin Version
• 53 I/O pins
• hardware multiplier
• programming lock for software security
• SPI Interface for In-System Programming
• real time counter with separate oscillator
• 8-channel, 10-bit ADC:
  - 8 single-ended channels
  - 7 differential channels
  - 2 differential channels with programmable gain at 1x, 10x, or 200x
• dual programmable serial USARTs (2x UART)
•  Master/Slave SPI serial interface
• 2x 8bit timer, 2x 16bit timer
• 16 MHz RISC

AVR ATmega128 datasheet (pdf)

AVR ATmega1281 datasheet (pdf)

AVR ATmega2561 datasheet (pdf)

Pinout
ATmega128, ATmega128-16AU
ATmega1281, ATmega1281-16AU
ATmega2561, ATmega2561-16AU
package TQFP

AVR Development Tools:

• Atmel AVR Studio 4 from www.atmel.com
• free C-Compiler AVR-GCC from AVR Freaks Web Site and GNU-GCC
• Basic compiler BASCOM-AVR
• Open Source Assember AVRA

AVR Resource Links:

• AVRfreaks
  
• OpenAVR

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