ATmega328

ATMEGA328P in a dual inline package (DIP)
Die of ATmega328P

The ATmega328 is a single chip micro-controller created by Atmel and belongs to the megaAVR series.

Specifications

The Atmel 8-bit AVR RISC-based microcontroller combines 32 KB ISP flash memory with read-while-write capabilities, 1 KB EEPROM, 2 KB SRAM, 23 general purpose I/O lines, 32 general purpose working registers, three flexible timer/counters with compare modes, internal and external interrupts, serial programmable USART, a byte-oriented 2-wire serial interface, SPI serial port, 6-channel 10-bit A/D converter (8-channels in TQFP and QFN/MLF packages), programmable watchdog timer with internal oscillator, and five software selectable power saving modes. The device operates between 1.8-5.5 volts. The device achieves throughputs approaching 1 MIPS.

Key parameters

PARAMETERS VALUE
Flash 32 Kbytes
RAM 2 Kbytes
Pin Count 28
Max. Operating Frequency 20 MHz
CPU 8-bit AVR
# of Touch Channels 16
Hardware QTouch Acquisition No
Max I/O Pins 26
Ext Interrupts 24
USB Interface No
USB Speed No

Series alternatives

A common alternative to the ATmega328 is the "picoPower" ATmega328P. A comprehensive list of all other member of the megaAVR series can be found on the Atmel website.[1]

Applications

Today the ATmega328 is commonly used in many projects and autonomous systems where a simple, low-powered, low-cost micro-controller is needed. Perhaps the most common implementation of this chip is on the popular Arduino development platform, namely the Arduino Uno and Arduino Nano models.

See also

Notes

  1. ↑ "megaAVR Microcontrollers". Atmel. Retrieved 12 November 2014.

External links

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