Note that port c 54 use digital supply voltage, v cc. Basically is an opensource platform and is mainly based upon avr microcontroller atmega328. Jun 21, 2018 arduino uno is a microcontroller board developed by which is an opensource electronics platform mainly based on avr microcontroller atmega328. The atmega328 is the microcontroller chip at the heart of the arduino uno. Arduino atmega328 microcontroller board consist of 6 analog inputs pins. It has an eeprom memory of 1kb and its sram memory is of 2kb.
Apr 04, 2018 atmega328p is an 8bit microcontroller based on avr risc architecture. Atmega32 pin diagram click the image to enlarge it atmega32 pin configuration. The further details about atmega 328 will be given later in this section. In this article, we will go over the pinout of the atmega328 chip. Aref is the analog reference pin for the ad converter. Atmega8 microcontroller pin description the main feature of atmega8 microcontroller is that all the pins of the microcontroller support two signals except 5pins. Atmega328 microcontrollers are from the 8bit avr microcontroller family. The atmel 8bit avr risc based microcontroller combines 32 kb. Atmega328 avr based projects list pdf downloadable. Lecture 6 introduction to the atmega328 and ardunio. Cc is the supply voltage pin for the ad converter, pc3. It also has 6 pwm outputs multiplexed on to the digital io pins. Arduino nano arduino nano front arduino nano rear overview the arduino nano is a small, complete, and breadboardfriendly board based on the atmega328 arduino nano 3.
Atmega328p pinout diagram, pin configuration, brief description. Atmels atmega328 8bit processor in 28 pin dip package. By executing powerful instructions in a single clock cycle, the atmega328pb achieves throughputs close to 1mips per mhz. Today, i am going to give you a detailed introduction to arduino nano. Arrow electronics is a certified microchip distributor, offering a variety of products. This member has many features similar to that of atmega32. Atmega328p pinout diagram, pin configuration, brief. The atmega328 pu is associated with the following product categories. It should be externally connected to v cc, even if the adc is not used.
Today we are going discuss its pinout diagram or pin configuration, uses, description, datasheet. The pin diagram of 8051 microcontroller looks as follows. Atmega328p microcontroller pinout, pin configuration. Port a serves as the analog inputs to the ad converter. Atmega 328 pinout diagram is shown in the figure given below. Perhaps the most common implementation of this chip is on the popular arduino development platform, namely the arduino uno and arduino nano models. Arduino uno is a microcontroller board based on the atmega328p datasheet. Programming on page 241 contains a detailed description on flash. The atmega328pu comes in an pdip 28 pin package and is suitable for use on our 28 pin avr development board. Avr atmega8 microcontrollerfeatures and block diagram. Aref aref is the analog reference pin for the ad converter. Arduino uno is based on atmega328p atmel avr family microcontroller mcu.
In short an atmega328 is a microcontroller chip found on arduino uno boards. The high performance microchip 8bit avr riscbased microcontroller unites 32kb isp flash memory with readwhilewrite capabilities, 1kb eeprom, 2kb sram, 23. Jan 27, 2017 arduino uno is based on atmega328p atmel avr family microcontroller mcu. We will offer direct atmega328 avr based projects list pdf file download link with info of its release date, number of projects. The exact part number of this chip is atmega328ppu as found printed on the top of the chip.
Many pins of the chip here have more than one function. This empowers system designers to optimize the device for power. Portxi 0 pin is floating portxi 1 connects a pullup to the pin keeps pin from floating if noone driving allows wiredor bus individual bits can be set cleared using bitops a bit can be toggled by writing 1 to pinxi sbi instruction e. Arduino uno pinout, examples, programming and applications. The atmel atmega328p is a 32k 8bit microcontroller based on the avr architecture. It has 14 digital inputoutput pins of which 6 can be used as pwm outputs, 6 analog inputs, a 16 mhz crystal oscillator, a usb connection, a power jack, an icsp header, and a. Pinout description of avr microcontroller port a pa7pa0. Atmega328pu microchip technology integrated circuits. We will describe functions of each pin in below table. Atmega328 is an 8bit and 28 pins avr microcontroller. It contains everything needed to support the microcontroller, simply connect it to. Atmega328 is an 8bit and 28 pins avr microcontroller, manufactured by.
As of 20 the atmega328 is commonly used in many projects and autonomous systems where a simple, lowpowered, lowcost microcontroller is needed citation needed. Atmel 8bit avr microcontrollers atmega328p datasheet complete pdf. Microcontrollers 8051 pin description tutorialspoint. It has a modified harvard architecture 8bit risc processor core. Atmega328p microcontroller pinout, pin configuration, features. Pin counts are different for different packages but with almost same characteristics. Atmega328 avr based projects list basically includes projects that are explained thoroughly with the help of circuit. It has 3 ports in total which are named as port b, port c and port d. An introduction to features of atmega8 microcontroller with its pin diagram, internal architecture block diagram and atmega8 datasheet pdf for download. It has 14 digital io pins portd 8pins, portc 6 pins, portb 5pins, 6 analogue input pins, which can be sampled using onchip adc.
It is a microcontroller board developed by and based on atmega328p atmega168 arduino boards are widely used in robotics, embedded systems, and electronic projects where automation is an essential part of the system. Arduino atmega328p architecture explained engineering. The atmel atmega328p is a lowpower cmos 8bit microcontroller based on the avr enhanced. The kit provides access to the features of the atmega328p enabling easy integration of the device in a custom design. It is available in several packages, we will focus on the common 28pin dip dual inline package. Its like the atmega168, with double the flash space. It is a reset pin, which is used to reset the microcontroller to its initial values. Atmega328p is an 8bit microcontroller based on avr risc architecture. The onboard microcontroller includes a bootloader for enabling programming over uart. Arrow electronics carries a wide variety of products within these categories. Arduino uno is named for marking the upcoming release of microcontroller board namely arduino uno board 1. Introduction to arduino nano the engineering projects.
Atmega328p pin diagram explanation tutorial youtube. These pins are powered from the analog supply and serve as 10bit adc. It has 14 digital inputoutput pins of which 6 can be used as pwm outputs, 6 analog inputs, a 16 mhz quartz crystal, a usb connection, a power jack, an icsp header and a reset button. High performance, low power atmelavr 8bit microcontroller family. It has 8 pin for adc operations, which all combines to form porta pa0 pa7. Im using this as a reference in connecting lcd and 4x4 keypad in my my controller an arduino clone gizduino atmega644 but im having a problem because of its pin different pin description. Pin 19 on the ic is actually the pin for digital pin on the arduino. The picopower atmega328p is a lowpower cmos 8bit microcontroller based on the avr.
The arduino uno is a microcontroller board based on the atmega328 datasheet. Introduction to atmega328 the engineering projects. The revision 05 has a new package for the atmega328 datasheet, which enables all components to be on the top of the board. It has 14 digital io pins, of which 6 can be used as pwm outputs and 6 analog input pins. Microcontroller, avr microcontroller, 8bit microcontroller.
Atmega32 is built on cmos complementary metaloxidesemiconductor technology which has high speed, low power consumption and enhanced antistatic effects. Port a also serves as an 8bit bidirectional io port, if the ad converter is not used. Microchip technology atmega328 8bit avr microcontrollers mcus are highperformance riscbased devices that combine 32kb isp flash memory with readwhilewrite capabilities, 1kb eeprom, 2kb sram, 23 generalpurpose io lines, 32 generalpurpose working registers, serial programmable usart, and more. If you are unsure or just want to see the pin out for the atmega328 ic, refer to the diagram below, or you can view the. Atmel atmega328 manual 567 pages 8bit atmel microcontroller with 481632k bytes insystem programmable flash. T0 timer0 external counter input xck usart external clock io 2. Peripheral features two 8bit timercounters with separate prescaler and compare mode one 16bit timercounter with separate prescaler, compare mode, and capture mode. The image below shows an avr atmega328 microcontroller chip. Atmega328 is an atmel microcontroller, which is used in arduino uno board. Explain the general architecture of a microcontroller list the key features of the atmega328 microcontroller explain the features and elements of the arduino and spartronics experimenter shield ses explain the concepts of microcontroller pins as inputs and outputs convert between binary and hexadecimal digits. Features of avr microcontroller pin description of atmega16. Jan 30, 2018 atmega328 is an atmel microcontroller, which is used in arduino uno board. Atmega328pu datasheet, cross reference, circuit and application notes in pdf format.
Atmega328 8bit avr mcus microchip technology mouser. Atmega32 avr microcontroller8 bitintroduction to architecture. It is the most popular of all avr controllers as it is used in arduino boards. This board includes digital io pins14, a power jack, analog ips6, ceramic resonatora16 mhz, a usb connection, an rst button, and an icsp header. Analog inputs can be used in the operating range of 0 to 5v. Atmega16 is a 40 pin microcontroller based on enhanced risc reduced instruction set computing architecture with 1 powerful instructions.
In my previous article, ive discussed about atmega32. Atmega328pb datasheet introduction the picopower atmega328pb is a lowpower cmos 8bit microcontroller based on the avr enhanced risc architecture. You can use the 5volt output and ground connections on the arduino uno to power your breadboard, you dont need a seperate power supply. Atmega16 is an 8bit high performance microcontroller from the atmels mega avr family. Atmega328 is an 8bit and 28 pins avr microcontroller, manufactured by microchip, follows risc architecure and has a flash type program memory of 32kb. Pricing and availability on millions of electronic components from digikey electronics. A properly configured shield can read the ioref pin voltage and select the appropriate power source or enable voltage translators on the outputs to work with the 5v or 3. The table below gives a description for each of the pins, along with their function. The atmega8 microcontroller consists of 28 pins where pins 9,10,14,15,16,17,18,19 are used for port b, pins 23,24,25,26,27,28 and 1 are used for port c and pins 2,3,4,5,6,11,12 are. Atmega328p avr microcontroller with picopower technology. But it has reduced number of features and capabilities, yet it has enough features to work with.
Port c is an analogue port and it has six pins in total. Atmega32 microcontroller pin diagram, pin configuration. Idle, adc noise reduction, powersave, powerdown, standby, and extended standby atmega328p. This board includes digital io pins14, a power jack, analog ips6, ceramic resonatora16 mhz, a usb connection, an. If the adc is used, it should be connected to v cc through a lowpass filter.
It has 14 digital inputoutput pins of which 6 can be used as pwm outputs, 6 analog inputs, a 16 mhz crystal oscillator, a usb connection, a power jack, an icsp header, and a reset button. Programmed via a standard usb connector, the uno integrates the atmega328 onto a board with io headers to provide an easytouse platform for programming the atmega328. Atmega328pu microchip technology microcontroller by. It has more or less the same functionality of the arduino duemilanove, but in a different package. The arduino uno is a microcontroller board based on the. Adc76 tqfp and qfnmlf package only in the tqfp and qfnmlf package, adc76 serve as analog inputs to the ad converter. And, finally, the reset pin on the arduino uno is connected to the reset pin on pin 1 of the atmega328. We will offer direct atmega328 avr based projects list pdf file download link with info of its release date.
First arduino project was started in interaction design institute ivrea in 2003 by david cuartielles and massimo banzi with the intention of providing a cheap and flexible way to students and. Atmega328p is a high performance microcontroller chip. Atmega328ppu atmel 8 bit 32k avr microcontroller protostack. Many instructions are executed in a single clock cycle providing a throughput of almost 20 mips at 20mhz. Complete guide and explanation for atmega avr pinout. Introduction to arduino uno the engineering projects. Avr atmega8 microcontrollerfeatures and block diagram with. This pin on the arduino board provides the voltage reference with which the microcontroller operates. The evaluation kit comes with a fully integrated debugger that provides seamless integration with atmel studio. Introduction to arduino uno uses avr atmega328 embedded. Arduino uno is one of the famous microcontroller boards of the arduino family and is developed by. The atmega328 is a singlechip microcontroller created by atmel in the megaavr family it has. It has a 16 kb programmable flash memory, static ram of 1 kb and eeprom of 512 bytes. From these 6 analog inputs pins, we can do the process by using analog inputs.
The highperformance microchip 8bit avr riscbased microcontroller combines 32kb isp flash memory with readwhilewrite capabilities, 1kb eeprom, 2kb sram, 23 general purpose io lines, 32 general purpose working registers, three flexible timercounters with compare modes, internal and external interrupts,serial programmable usart, a byte. It is an 8bit microcontroller that has 32k of flash memory, 1k of eeprom, and 2k of internal sram. The atmega328 is a very popular microcontroller chip produced by atmel. Microcontroller with 481632k bytes insystem programmable. Introduction to atmega8 microcontroller architecture and its. Now, let me introduce another member of avr microcontroller family, the atmega8. Introduction to atmega8 microcontroller architecture and. When i tried connecting it the same with my reference without looking at the pin description im only having black box in the lcd after uploading a. Interrupt and wakeup on pin change special microcontroller features poweron reset and programmable brownout detection internal calibrated oscillator external and internal interrupt sources six sleep modes. This mcu has 32kb of flash, 2kb of sram and 1 kb of eeprom. Part ecad model manufacturer description datasheet download buy part. So, in simple words, atmega328 has 6 analogue pins. Port pins metrical drive characteristics with both high sink and source capability.
Atmega328p is a 28 pin chip as shown in pin diagram above. The highperformance, lowpower microchip 8bit avr riscbased microcontroller combines 32kb isp flash memory with readwhilewrite capabilities, 1kb eeprom, 2kb sram, 5469 general purpose io lines, 32 general purpose working registers, a jtag interface for boundaryscan and onchip debuggingprogramming, three flexible timercounters with. Remember, there is already a 10k resistor attached to pin 1, you need to leave that in place. The atmega328 is a single chip microcontroller created by atmel in the megaavr family later microchip technology acquired atmel in 2016.