AVR microcontrollers: Difference between revisions

Revision as of 16:14, 7 April 2025

Revision as of 12:24, 15 April 2025

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[[File:ATMEGA328P-PU.jpg|right|thumb|[[ATmega328]]P in 28-pin narrow dual in-line package ([[Dual in-line package|DIP]]-28N). It is commonly found on [[Arduino]] boards.]]

'''AVR''' is a family of [[microcontrollers]] developed since 1996 by [[Atmel]], acquired by [[Microchip Technology]] in 2016. TheseThey are [[modified Harvard architecture]] [[8-bit]] [[Reduced instruction set computer|RISC]] single-chip microcontrollers based on a modified Harvard architecture. AVR was one of the first microcontroller families to use on-chip [[flash memory]] for program storage, as opposed to [[Programmable read-only memory|one-time programmable ROM]], [[EPROM]], or [[EEPROM]] used by other microcontrollers at the time.

AVR microcontrollers find many applications as [[embedded system]]s. They are especially common in hobbyist and educational embedded applications, popularized by their inclusion in many of the [[Arduino]] line of [[open hardware]] development boards.

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* '''AVR DA-series''' (early 2020) – The high memory density makes these MCUs well suited for both wired and wireless communication-stack-intensive functions.

** integrated sensors for capacitative touch measurement ([[Human–computer interaction|HCI]])

** updated core independent peripherals ([[Autonomous peripheral operation|CIPs]]) and aan analog peripherals

** no external high frequency crystal

* '''AVR DB-series''' (mid-late 2020) – inherits many features from the DA-family, while adding its own:

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** [[Pulse-width modulation|PWM]] output (some devices have an enhanced PWM peripheral which includes a dead-time generator)

** Input capture that record a time stamp triggered by a signal edge

* Analogprinciple comparator

* 10 or 12-bit [[Analog-to-digital converter|A/D converters]], with multiplex of up to 16 channels

* 12-bit [[Digital-to-analog converter|D/A converters]]