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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

¨C 130 Powerful Instructions ¨C Most Single Clock Cycle Execution

¨C 32 x 8 General Purpose Working Registers

¨C Fully Static Operation

¨C Up to 20MIPS Throughput at 20MHz

¨C On-Chip 2-cycle Multiplier

? High Endurance Non-volatile Memory segments

¨C In-System Self-programmable Flash Program Memory

? 32KBytes

¨C EEPROM

? 1Kbytes

¨C Internal SRAM

? 2Kbytes

¨C Write/Erase cyles: 10,000 Flash/100,000 EEPROM

¨C Data retention: 20 years at 85¡ãC/100 years at 25¡ãC(1)

¨C Optional Boot Code Section with Independent Lock Bits

? In-System Programming by On-chip Boot Program

? True Read-While-Write Operation

¨C Programming Lock for Software Security

? JTAG (IEEE std. 1149.1 compliant) Interface

¨C Boundary-scan Capabilities According to the JTAG Standard

¨C Extensive On-chip Debug Support

¨C Programming of Flash, EEPROM, Fuses, and Lock Bits through the JTAG Interface

? Peripheral Features

¨C 4 x 25 Segment LCD Driver (ATmega329P)

¨C 4 x 40 Segment LCD Driver (ATmega3290P)

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

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

¨C Real Time Counter with Separate Oscillator

¨C Four PWM Channels

¨C 8-channel, 10-bit ADC

¨C Programmable Serial USART

¨C Master/Slave SPI Serial Interface

¨C Universal Serial Interface with Start Condition Detector

¨C Programmable Watchdog Timer with Separate On-chip Oscillator

¨C On-chip Analog Comparator

¨C Interrupt and Wake-up on Pin Change

? Special Microcontroller Features

¨C Power-on Reset and Programmable Brown-out Detection

¨C Internal Calibrated Oscillator

¨C External and Internal Interrupt Sources

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

? I/O and Packages

¨C 54/69 Programmable I/O Lines

¨C 64/100-lead TQFP, 64-pad QFN/MLF

? Speed Grade:

¨C ATmega329P/ATmega3290P:

? 0 - 16MHz @ 1.8 - 5.5V,

? 0 - 20MHz @ 2.7 - 5.5V

? Temperature range:

¨C -40¡ãC to 85¡ãC Industrial

? Ultra-Low Power Consumption

¨C Active Mode:

? 420¦ÌA at 1MHz, 1.8V

¨C Power-down Mode:

? 40nA at 1.8V

¨C Power-save Mode:

? 750nA at 1.8V