Overview The ATmega329P/3290P 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 ATmega329P/3290P achieves throughputs approaching 1MIPS 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 – 130 Powerful Instructions – Most Single Clock Cycle Execution – 32 x 8 General Purpose Working Registers – Fully Static Operation – Up to 20MIPS Throughput at 20MHz – On-Chip 2-cycle Multiplier • High Endurance Non-volatile Memory segments – In-System Self-programmable Flash Program Memory • 32KBytes – EEPROM • 1Kbytes – Internal SRAM • 2Kbytes – Write/Erase cyles: 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 (ATmega329P) – 4 x 40 Segment LCD Driver (ATmega3290P) – 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 – 54/69 Programmable I/O Lines – 64/100-lead TQFP, 64-pad QFN/MLF • Speed Grade: – ATmega329P/ATmega3290P: • 0 - 16MHz @ 1.8 - 5.5V, • 0 - 20MHz @ 2.7 - 5.5V • Temperature range: – -40°C to 85°C Industrial • Ultra-Low Power Consumption – Active Mode: • 420μA at 1MHz, 1.8V – Power-down Mode: • 40nA at 1.8V – Power-save Mode: • 750nA at 1.8V
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