Atmel 8-bit Microcontrollers with Integrated USB Controller USB Everywhere, USB Self-Programming

8-BIT MICROCONTROLLERS WITH	Everywhere You Are®
INTEGRATED USB CONTROLLER

USB Everywhere

After conquering computers and peripherals, USB is gaining momentum in consumer products and industrial equipment. Data storage, data transfer and product confi guration are key applications driving this move.

On-The-Go (OTG) now allows devices to communicate without PC intervention. With the suitable device class libraries OTG can:

•support various targeted products

•negotiate host or device role with another OTG device

•connect to any PC as a USB device

Human Interface Devices form by far the most popular class of USB peripherals. New pointing and input devices gain in accuracy with full- speed (12 Mbit/s), which is provided by all Atmel USB microcontrollers. Atmel USB microcontrollers also support isochronous transfers and double

buffering for audio streaming. Last but not least, Atmel controllers with seven endpoints can merge several USB functions in one composite device, thus saving space and components.

USB Self-Programming

Atmel USB Flash microcontrollers’ on-chip bootloader can be used for self-programming at any step of the product life cycle: development, production, after sales support and in day to day use by the end user. Dedicated on-chip hardware secures the user fi rmware but can also force the application to reprogram when it has lost control.

USB to SPI

or

USB to RS232

adapter

USB

12 Mbps

Standard Flash MCU USB Flash MCU

Instant connection: programming on demand