Atmel AVR 8- and 32-bit Microcontrollers

Performance, Efficiency, and Flexibility Across a Broad Range of Applications

Atmel® AVR® 8- and 32-bit microcontrollers deliver a unique combination of performance, power efficiency, and design flexibility. Optimized to speed time to market, they are based on the industry's most code-efficient architecture for C and assembly programming. No other microcontrollers deliver more computing performance with better power efficiency. Industry-leading development tools and design support let you get to market faster. Once there, the large AVR family lets you reuse your knowledge when improving your products and expanding to new markets—easily and cost-effectively.

Atmel AVR 8- and 32-bit Microcontrollers Devices

Device Family	Summary Benefit	Applications	Technologies	Key Parameters
32-bit AVR UC3	The world's most efficient 32-bit microcontroller	General Purpose	picoPower SleepWalking FlashVault DMA Event System Self Programming	16-512KB Flash 48-144 pins Up to 66 MHZ 1.5 MIPS/MHz
Details The 32-bit AVR UC3 takes efficiency to a new level, going beyond high performance and low power consumption. Native fixed point DSP support, dual port SRAM, multi layer data bus, peripheral DMA controller, peripheral event system and intelligent peripherals move performance and power consumption to the next step. The peripheral DMA controller and multi-layer high-speed bus architecture make the UC3 microcontrollers ideal for high throughput applications. Intelligent peripherals and dynamic power control make UC3 devices the obvious choice for portable and battery-powered applications. Selected UC3 devices include an integrated Floating Point Unit (FPU) which improves arithmetic performance on decimal numbers, with better precision and wider dynamic range. Learn more
8/16-bit AVR XMEGA	Xtreme performance 8-bit	General Purpose	picoPower SleepWalking DMA Event System EEPROM Self Programming	16-384KB Flash 44-100 pins Up to 32 MHz 1.0 MIPS/MHz
Details The AVR XMEGA delivers a leading combination of real time performance, integration and power efficiency. The highly integrated design minimizes your bill of materials in a broad range of applications. This includes features like AES and DES crypto, high-speed analog modules, flexible Timer/Counters, multiple communication modules and types, and efficient power management. The DMA controller, innovative event system ensure predictable real time performance even with high load, and push the boundaries for high-performance 8/16-bit MCUs. To speed up development, all AVR XMEGA devices are code-compatible. You can maintain one code base and re-use it across multiple projects. Learn more
8-bit megaAVR	More peripherals and options	General Purpose Lighting LCD	QTouch picoPower SleepWalking EEPROM Self Programming	4-256KB Flash 28-100-pins Up to 20 MHz 1.0 MIPS/MHz
Details When your designs need some extra muscle, you need the megaAVR. Ideal for applications requiring large amounts of code, the megaAVR offers substantial program and data memories with performance up to 20 MIPS. Innovative picoPower technology minimizes power consumption. All megaAVRs offer self-programmability for fast, secure, cost-effective in-circuit upgrades. You can even upgrade the flash while running your application. Based on industry-leading, proven technology, the megaAVR family offers our widest selection of devices in terms of memories, pin counts and peripherals. Choose from general-purpose devices to models with specialized peripherals like USB, or LCD controllers, or CAN, LIN and Power Stage Controllers. It's easy to find the perfect fit for your project in the megaAVR product family. Learn more
8-bit tinyAVR	Small and powerful	General Purpose Limited board space	QTouch EEPROM 0.7V operation	0.5 – 8KB Flash 6-32 pins Up to 20MHz 1.0 MIPS/MHz
Details Atmel tinyAVR devices are optimized for applications that require performance, power efficiency, and ease of use in a small package. All tinyAVR devices are based on the same architecture and compatible with other AVR devices. Integrated ADC, EEPROM memory and Brown out detector let you build applications without adding external components. tinyAVR offers flash memory and on-chip debug for fast, secure, cost-effective in-circuit upgrades that significantly cuts your time to market. The tinyAVR offers an unrivalled combination of miniaturization, processing power, analog performance, and system-level integration. The tinyAVR is the most compact, feature-rich device in the AVR family—and the only device capable of operating at just 0.7V. And there's nothing tiny about that. Learn more
Battery Management	Li-Ion Battery Management	Gas gauging Cell Balancing Authentication Short Circuit protection Heat protection	1 – 4 cells High Side N-MOS Coloumb Counter Temperature Sensor Self Programming	1.8 – 25V operation 8 – 40KB Flash 28 – 48 pins Up to 8 MHz 1.0 MIPS/MHz
Details Atmel AVR offers single-chip battery management products for Li-ion batteries. Designed to maximize lifetime and energy per cycle, they feature dedicated analog-to-digital converters tailored for battery fuel gauging and voltage monitoring. To ensure safe operation, it is critical that applications always use a certified battery pack. Atmel battery management devices support sophisticated authentication mechanisms to reject potentially unsafe copy batteries. Learn more
Automotive AVR	Intelligence, control, and rugged design for demanding automotive environments. Qualified for Automotive	Automotive	QTouch picoPower SleepWalking EEPROM Self Programming	Robust design for automotive environments Rich portfolio for a variety of applications Dependable design
Details Atmel delivers a wide range of 8- and 32-bit AVR microcontrollers qualified for automotive use. AVR microcontrollers support the extended temperature range, and are fully qualified to AECQ100. They provide the advanced features, architecture, and dependable design that customers demand for automotive systems. Learn more

The Performance, Features, and Tools You Need to Succeed Maximizing Power Efficiency
To meet the tough requirements of today's applications, Atmel has built upon more than a decade of low power research to develop Atmel picoPower® technology. picoPower enables AVR microcontrollers to reduce power consumption in both sleep and active mode, and achieve the industry's lowest power consumption, with 500nA @ 1.8V with RTC running and 9 nA in power-down sleep mode.

A Complete Set of Tools to Streamline Development
Atmel offers a high quality, easy-to-use tool chain for the full range of AVR families. Available for free, the Atmel AVR Studio® development environment enables code development in C or assembly, simulation, and integrates seamlessly with Atmel starter kits, programmers, debuggers, evaluation kits, and reference designs. The result is faster development, a more productive development team, and rapid time to market.

Atmel AVR Tools Quality

Software Made Easy
Atmel offers AVR software framework, a complete library of drivers and middleware needed to build an application. A common Application Protocol Interface (API) is provided making it easy to port your software between different AVR microcontrollers.

In addition, a large collection of application notes explains how to use all on-chip peripherals in an application.

Capacitive Touch
Atmel QTouch® Library makes it simple for developers to embed capacitive-touch button, slider, and wheel functionality into general-purpose AVR microcontroller applications. The royalty-free QTouch Library provides several library files for each device and supports different numbers of touch channels, enabling both flexibility and efficiency in touch applications. By selecting the library file supporting the exact number of channels needed, developers can achieve a more compact and efficient code using less RAM.

A Perfect Fit for Your Application
Atmel compliments its broad range of standard AVR microcontrollers with a growing portfolio of derivatives tailored to specific applications. Our expanding portfolio enables you to support a wide range of applications and functions, including automotive, LCD drivers, CAN networking, USB connectivity, motor control, lighting applications, battery management single-chip, IEEE 802.15.4, ZigBee, Remote Access Control and more.

Removing Data Transfer Bottlenecks
The DMA controller found in Atmel AVR XMEGA® and Atmel AVR UC3 sets a new standard for data transfer efficiency in microcontrollers. It allows efficient data transfers between peripherals and memories with minimal CPU intervention. The result is data transfer rates of up to 33MBit/s per SPI and USART port—with only a 15% load on the CPU.

Peripheral Intelligence
Atmel SleepWalking technology in AVR XMEGA, AVR UC3, and Atmel megaAVR® devices adds intelligence to peripherals, enabling them to perform a basic range check before they generate an interrupt to the CPU. Combined with power save modes, the automatic range check can be applied to remove the need to wake up the CPU at regular intervals to check the environment. The intelligent peripherals will monitor the environment on their own, and only wake the CPU when there is a need for action. Because the CPU draws far more energy than a single peripheral, SleepWalking can dramatically reduce power consumption.

Peripheral Cooperation
Inefficient peripheral management can impact performance and increase power consumption. To overcome these issues, our peripheral event system lets peripherals send signals (events) directly to other peripherals, bypassing the CPU. The result is short, predictable response times, reduced number of wakeups from sleep, and CPU resources freed up for other tasks. The peripheral event system can also replace interrupt-driven data transfer with event-triggered data transfer, to help reduce application power consumption and increase system performance.

Advanced Arithmetic Performance
For applications that demand high-end arithmetic performance, selected AVR microcontrollers feature an IEEE754 compliant Floating Point Unit (FPU). This integrated component lets the microcontrollers perform arithmetic calculations on decimal numbers in fewer clock cycles, with higher precision. The FPU helps enhance a wide range of applications. Sensor data can be filtered or analyzed to suppress noise and capture better-quality information, and audio data processed without loss of fidelity.

Integrated Security
To help safeguard sensitive information, some AVR microcontrollers include a high-performance encryption and decryption engine that supports 128-, 192- and 256-bit key lengths for AES and 56-bit key lengths for DES. These products are ideal for applications that require on-the-fly encryption of high-speed communication streams.

Flash Security
To safeguard sensitive data, Atmel FlashVault code protection enables on-chip flash to be partially programmed and locked, for secure on-chip storage of software intellectual property. FlashVault code protection can carry software such as a math library or an encryption algorithm to potentially untrustworthy environments where the rest of the source code can be developed and debugged. All AVR microcontrollers contain lock mechanisms to prevent reading and copying the program stored in on-chip Flash.

The Power of Self-Programming Flash
For flexibility and scalability, support for self-programming Flash enables field upgrades via any communication interface. It also lets customers perform encrypted field programming, reducing or completely eliminating risk of programming the wrong binary. Read-while-Write Flash support lets customers continue to run applications while an upgrade is in progress, to minimize downtime.