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Overview

The ATmega640/1280/1281/2560/2561 is a low-power CMOS 8-bit microcontroller based on the AVR enhanced RISC architecture. By executing powerful instructions in a single cloc k cycle, the ATmega640/1280/1281/2560/2561 achieves throughputs approaching 1 MIPS per MHz allowing the system designer to optimize power consumption versus processing speed.

Features

• High Performance, Low Power Atmel® AVR® 8-Bit Microcontroller

• Advanced RISC Architecture

   – 135 Powerful Instructions – Most Single Clock Cycle Execution

   – 32 × 8 General Purpose Working Registers

   – Fully Static Operation

   – Up to 16 MIPS Throughput at 16MHz

   – On-Chip 2-cycle Multiplier

• High Endurance Non-volatile Memory Segments

   – 64K/128K/256KBytes of In-System Self-Programmable Flash

   – 4Kbytes EEPROM

   – 8Kbytes Internal SRAM

   – 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

• In-System Programming by On-chip Boot Program

• True Read-While-Write Operation

– Programming Lock for Software Security

• Endurance: Up to 64Kbytes Optional External Memory Space

• Atmel® QTouch® library support

   – Capacitive touch buttons, sliders and wheels

   – QTouch and QMatrix acquisition

   – Up to 64 sense channels

• 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: 1MHz, 1.8V: 500µA

   – Power-down Mode: 0.1µA at 1.8V

• Speed Grade:

   – ATmega640V/ATmega1280V/ATmega1281V:

      • 0 - 4MHz @ 1.8V - 5.5V, 0 - 8MHz @ 2.7V - 5.5V

   – ATmega2560V/ATmega2561V:

      • 0 - 2MHz @ 1.8V - 5.5V, 0 - 8MHz @ 2.7V - 5.5V

   – ATmega640/ATmega1280/ATmega1281:

      • 0 - 8MHz @ 2.7V - 5.5V, 0 - 16MHz @ 4.5V - 5.5V

   – ATmega2560/ATmega2561:

      • 0 - 16MHz @ 4.5V - 5.5V