ATmega328

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The ATMega328 is a low-power AVR 8-bit Microcontroller running at up to 20MHz from Atmel. It utilizes the RISC architecture, and serves as the core microcontroller for several Arduino platforms, including the Arduino Duemilanove, Arduino Uno, and new versions of the Arduino Nano. The microcontroller is similar to the ATmega168, with double the flash memory, SRAM, and EEPROM.

Technical Details

The ATMega328 is a 8-bit, 20MHz microcontroller. It connects via I²C, SPI, and UART/USART, with 32Kb Flash RAM, 1Kb EEPROM, 2Kb RAM, operating voltage of 1.8V ~ 5.5V, A/D 8x10b data converters, and an internal oscillator. The controller is available in 32-lead TQFP, 28-lead PDIP, and 32-pad QFN/MLF packages.

A complete register list can be found in the ATMega328 documentation from Atmel.


Reference


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