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8051 MCU Support

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Atmel AVR

Performance, Efficiency and Flexibility Advantage Like No Other

With ease-of-use, low power consumption, and high level of integration in mind, Atmel® AVR® 8- and 32-bit microcontrollers complement Atmel's ARM® microcontrollers and microprocessors to 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.

Devices

Device Family Summary Benefit Applications Technologies Key Parameters
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
Xtreme performance 8-bit
General Purpose
picoPower

SleepWalking

DMA

Event System

EEPROM

Self Programming
16-384KB Flash

32-100 pins

Up to 32 MHz

1.0 MIPS/MHz
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
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
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
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

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.