Overview

The ATmega329/3290/649/6490 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 ATmega329/3290/649/6490 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

– 130 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

– In-System Self-programmable Flash Program Memory

• 32K Bytes (ATmega329/ATmega3290)

• 64K Bytes (ATmega649/ATmega6490)

– EEPROM

• 1K bytes (ATmega329/ATmega3290)

• 2K bytes (ATmega649/ATmega6490)

– Internal SRAM

• 2K bytes (ATmega329/ATmega3290)

• 4K bytes (ATmega649/ATmega6490)

– Write/Erase Cycles: 10,000 Flash/ 100,000 EEPROM

– Data retention: 20 years at 85°C/100 years at 25°C(1)

– 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

• 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

– 4 x 25 Segment LCD Driver (ATmega329/ATmega649)

– 4 x 40 Segment LCD Driver (ATmega3290/ATmega6490)

– Two 8-bit Timer/Counters with Separate Prescaler and Compare Mode

– One 16-bit Timer/Counter with Separate Prescaler, Compare Mode, and Capture Mode

– Real Time Counter with Separate Oscillator

– Four PWM Channels

– 8-channel, 10-bit ADC

– Programmable Serial USART

– Master/Slave SPI Serial Interface

– Universal Serial Interface with Start Condition Detector

– 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

– Five Sleep Modes: Idle, ADC Noise Reduction, Power-save, Power-down, and Standby

• I/O and Packages

– 53/68 Programmable I/O Lines

– 64-lead TQFP, 64-pad QFN/MLF, and 100-lead TQFP

• Speed Grade:

– ATmega329V/ATmega3290V/ATmega649V/ATmega6490V:

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

– ATmega329/3290/649/6490:

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

• Temperature range:

– -40°C to 85°C Industrial

• Ultra-Low Power Consumption

– Active Mode:

• 1 MHz, 1.8V: 350 µA

• 32 kHz, 1.8V: 20 µA (including Oscillator)

• 32 kHz, 1.8V: 40 µA (including Oscillator and LCD)

– Power-down Mode:

• 100 nA at 1.8V