Atmel 8-bit Microcontrollers with Integrated USB Controller 사용자 설명서

8-BIT MICROCONTROLLERS WITH

INTEGRATED USB CONTROLLER 

Everywhere You Are

®

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.

Standard Flash MCU

USB to SPI 

or 

USB to RS232 

adapter 

  

  USB Flash MCU