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 clock 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 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
● – 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 64K Bytes Optional External Memory Space
●• 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: 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
