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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