Microchip Technology Inc

Advanced Software Framework (ASF)

The Advanced Software Framework (ASF) is an MCU software library providing a large collection of embedded software for AVR and SAM flash MCUs: megaAVR, AVR XMEGA, AVR UC3 and SAM devices.

Benefits include:

  • Simplifies the usage of microcontrollers, providing an abstraction to the hardware and high-value middleware
  • Designed to be used for evaluation, prototyping, design and production phases
  • Integrated in the Atmel Studio IDE with a graphical user interface or available as standalone for GCC and IAR compilers
  • ASF4 is fully integrated and can be configured using Atmel START. ASF4 does not need to install any components locally.
  • ASF3 is available as free download.
Tabs / Advanced Software Framework (ASF)

Advanced Software Framework v3.xx (ASF3)

Title Date Published Size D/L
Windows (x86/x64)
Advanced Software Framework v3.37 2/6/2018 472 MB ZIP
Release Notes
Advanced Software Framework v3.37 Release Notes 11/2/2017 75 KB PDF


Date Published
ASF4 API Reference Manual
2.7 MB

Application Notes

Category # Title
Framework, Oversampling AN8498 - AVR1629: XMEGA ADC Oversampling
AN8432 - AVR4030: AVR Software Framework - Reference Manual
AN8431 - AVR4029: Software Framework - Getting Started