ATMEGA328: Datasheet, Price, Stock, Features, and How to Buy Guide

The ATMEGA328 is a low-power CMOS 8-bit microcontroller based on AVR enhanced RISC architecture. It has 1KB of SRAM and 32KB of flash storage space, and supports a variety of programming methods, such as C language, assembly language and so on. The ATMEGA328 integrates a number of peripherals, such as ADC, PWM, USART, SPI, etc., which is suitable for various control systems, especially in embedded systems, automation control and electronic device control.

A common application of ATMEGA328 is in the Arduino Uno board, a popular open source electronic prototyping platform used in DIY projects, education, makerspaces, and projects for professional engineers. The Arduino Uno board is based on the ATMEGA328 microprocessor and uses a custom Harvard architecture with an 8-bit RISC processor core.

The ATMEGA328 features include low power consumption, high performance, rich functionality, and ease of programming, making it an ideal choice for many electronics projects.

 

The Ultimate Datasheet of ATMEGA328

ATMEGA328 is a low-power CMOS 8-bit microcontroller produced by Microchip, which is widely used in various embedded systems. The following is a comprehensive datasheet of the ATMEGA328 for your consideration. 

1. Core features: ATMEGA328 is based on AVR enhanced RISC architecture, having an 8-bit CPU, and supports hardware multiplication. It integrates 32KB of flash memory, 2KB of SRAM, and 1KB of EEPROM. In addition, the chip supports a variety of clock sources, including external crystal oscillators, internal RC oscillators, and PLL.

2. IO Ports: ATMEGA328 provides 32 configurable I/O pins, including 16 ADC input channels, 10 PWM output channels, and 6 external interrupt pins. These pins can be programmed to be flexibly configured to meet a variety of different application requirements.

3. Analog function: In addition to the digital IO port, ATMEGA328 also has a number of built-in analog function modules, such as ADC (analog-to-digital converter), comparator and timer. Among them, the ADC module supports 10-bit resolution, which can achieve fast and accurate analog signal acquisition.

4. Communication interface : In order to facilitate communication with other devices, ATMEGA328 provides a variety of communication interfaces, including USART, SPI and I2C. These interfaces support high-speed data transfer and can be seamlessly interoperable with a variety of peripherals.

5. Power Management: ATMEGA328 has excellent power management capabilities and supports a variety of low-power modes. In idle mode, the CPU stops working while peripherals continue to run. In power down mode, all circuits are shut down, and only the contents of the internal registers and SRAM are preserved.

6. Package form : ATMEGA328 offers a variety of packaging forms to adapt to different application requirements, including TQFP (100 pins), MLF (32 pins) and PDIP (14 pins). These packaging forms have good mechanical stability and thermal performance, which can ensure that the chip can work reliably in harsh environments.

7. Temperature range: ATMEGA328 operates a temperature range of -40℃ to 85℃, which is suitable for a variety of indoor and outdoor application scenarios.

8. Reliability: ATMEGA328 has passed the strict quality control and testing process, owning excellent reliability and stability. In addition, it supports a variety of error detection and correction mechanisms, such as watchdog timers, brown battery monitoring and voltage monitoring, to ensure that the system can be restored to normal operation in a timely manner in an abnormal situation.

9. Applications: Due to its excellent performance and rich functions, ATMEGA328 is widely used in a variety of embedded systems, such as smart home, industrial automation, medical equipment and consumer electronics.

Overall, ATMEGA328 is a powerful and easy-to-use microcontroller chip suitable for a variety of complex embedded system applications. It is an option worth considering for both beginners and experienced developers.

Features and advantages of ATMEGA328

The ATMEGA328 is a widely used microcontroller belonging to the AVR family, which has the following features and advantages:

Features

Good Performance: ATMEGA328 is based on the AVR architecture and provides high performance for digital signal processing capabilities.

Low Power: This microcontroller is designed for low power applications and is suitable for battery powered projects. 

Easy to program: It supports a variety of programming tools and languages, such as C, C++, etc., through ISP, ICSP or JTAG interface programming.

Abundant I/O ports: Up to 26 I/O pins, some of which can be used to simulate input/output.

Built-in analog-to-Digital Converter (ADC): Built-in 8-channel 10-bit ADC for easy reading of analog signals.

External interrupts: ATMEGA328 supports external interrupts and can respond to external events.

Serial communication: Support TTL serial communication, easy to exchange data with other devices.

Advantage

Cost-effective: Due to its wide availability and low cost, the ATMEGA328 is ideal for educational and commercial projects.

Community Support: There are plenty of development resources, tutorials and forum support to make it easier for developers to get started and solve problems. 

Flexibility: Thanks to its extensive I/O options and peripheral support, ATMEGA328 is suitable for a variety of different application scenarios.

Reliability: AVR series microcontrollers are known for their stability and reliability and are suitable for demanding embedded systems.

Compatibility: ATMEGA328 is compatible with the Arduino platform, and you can take advantage of the large number of libraries and modules in the Arduino ecosystem.

To sum up, ATMEGA328 is popular for its performance, low power consumption, ease for use, cost effectiveness, and strong community support. These features make it an ideal choice for electronics enthusiasts, students, and professional developers. 

Recent Price and Stock of ATMEGA328

According to some information from online business platforms, the price of ATMEGA328 may range from a few dollars to tens of dollars, depending on the model, packaging, whether it is made by original manufacturers or other dealers. And here are the latest price and stock of ATMEGA328 for your consideration.

Recent Price

Quantity (Unit)	1+	10+	20+	100+
Price For Each (USD$)	1.63-15.47	1.51-3.98	1.39-3.75	1.34-2.93

Recent Stock

Manufacturer	Stock
Microchip Technology Inc.	88038
Win Source Electronics	48704
Atmel Corporation	180
DigiKey	180
Rochester Electronics	180

Please note that when purchasing electronic components, make sure to choose a reliable supplier and carefully check the product specifications and models to ensure that they meet your needs.

How to Buy the best ATMEGA328: top 5 Manufacturers List

After learning some basic knowledge and the recent price and stock about ATMEGA328, in this section, it is time for further recommendation of the top 5 manufacturers for helping you choose the best product you need. The following data is collected based on the market research about the quantity, brand influence and consumer feedback of ATMEGA328. So let’s get started!

Chipsmall

Chipsmall was founded in conjunction with a number of first-class agents around the world and a number of spot stockists in China, aiming to find the products needed by technical engineers and industrial buyers around the world. Chipmall in Shenzhen, Hong Kong and Singapore and other places with nearly 5000 square meters of warehousing and 250,000 + massive stock, guarantee 24 hours of immediate delivery, and has experienced sales service team and technical support team to provide product procurement assistance and product application support. And Chipmall has always been customer-centric, insisting on providing customers with high quality and excellent electronic products, and responding quickly to customer needs. Thus the company has won wide recognition and trust from customers for its quality service, reliable products and abundant inventory.

Microchip Technology Inc.

Microchip Technology Inc. is a leading global supplier of single chip microcomputer (MCU) and analog semiconductors. The company was founded in 1989 and is headquartered in Chandler, Arizona. As a world-renowned semiconductor company, Microchip's innovative technology and reliable products provide low-risk product development, lower total system cost and faster time to market for thousands of consumer products around the world. Besides, Microchip Technology Inc. has provided its perfect ATMEGA328 to almost every well-known dealer all around the world, and it owns the largest storage of ATMEGA328 and relevant electronic products. Microchip with its rich product line, excellent product quality and professional service, has gained a number of good comments and acknowledgements from consumers.

DigiKey

DigiKey is known for its off-the-shelf direct sales business model and extensive library of electronic components, with more than 750 licensed vendors and more than 15 million products covering LED lighting, RF and wireless, semiconductors, and more. The company has a large inventory to ensure that customers get the products they need quickly. Also, DigiKey has an extensive sales network and customer support centers. With its excellent product quality, professional service and innovative business model, it has won a wide reputation and customer trust in the electronic components distribution industry. As one of the global leaders in the distribution of electronic components, DigiKey will continue to be committed to providing customers around the world with high-quality electronic components and professional services to promote the development of global innovation.

Mouser Electronics

Mouser Electronics is a leading global distributor of electronic components headquartered in Mansfield, Texas, USA. The company offers design engineers and purchasers a broad range of semiconductor and electronic component products, as well as related design tools and resources. What’s more the company is also known for providing large inventory, fast delivery and excellent customer support. They have established close cooperation with many well-known manufacturers around the world and have millions of products for customers to choose from. Whether it is common resistors, capacitors, connectors, or more professional microcontrollers, sensors, power modules, etc., Mouser Electronics is making efforts to meet the needs of customers. As we can see in the picture below, the interface of buying ATMEGA328 in the website of Mouser Electronics is clear and simple, for which the specification, stock and the click to purchase are all together showing in front of the buyers.

RS

RS Components (RS) is a leading global distributor of electronics, automation and repair products, part of the Electrocomponents plc Group. RS’s online shopping platform provides engineers and procurement specialists with a convenient online shopping experience, enabling them to easily find and purchase the electronic components, tools, test equipment and other related products they need. RS not only offers a wide selection of products, but also many value-added services such as technical support, product selection guides, online quotes and order tracking. These services are designed to help customers complete their procurement tasks more efficiently and ensure they get the products and solutions they need.

Final Verdict

ATMEGA328 is a powerful, easy-to-use 8-bit AVR microcontroller whose low power consumption and high performance make it ideal for many embedded applications. Whether used as a teaching tool or as the core of a commercial product, the ATMEGA328 provides stable and reliable performance. Hope this guide can help you purchase the best one to meet your needs.