 User Interface | Human interface on EVK1101 : |
| Implementation of UHC | Internal implementation |
 Clock Management | |
 Generic Clock Management | Generic clocks are configurable clocks which run outside the system clock domain |
| Oscillator Management | This group contains functions and definitions related to configuring and enabling/disabling on-chip oscillators |
| PLL Management | This group contains functions and definitions related to configuring and enabling/disabling on-chip PLLs |
 System Clock Management | See Quick Start Guide for the System Clock Management service (UC3B0/UC3B1) |
  System Clock internals | |
| MEMORY - FLASHC - Flash Controller | FLASHC interfaces a flash block with the 32-bit internal HSB bus |
| Compiler abstraction layer and code utilities | Compiler abstraction layer and code utilities for 32-bit AVR |
| Preprocessor - Macro Repeat | |
| Preprocessor - Stringize | |
| Preprocessor - Token Paste | |
| Status Codes | |
| Atmel part identification macros | This collection of macros identify which series and families that the various Atmel parts belong to |
| AVR UC3 parts | |
| AVR XMEGA parts | |
| megaAVR parts | |
| SAM parts | |
| Global interrupt management | This is a driver for global enabling and disabling of interrupts |
| Deprecated interrupt definitions | |
| Sleep manager | The sleep manager is a service for ensuring that the device is not put to sleep in deeper sleep modes than the system (e.g., peripheral drivers, services or the application) allows at any given time |
| CPU - PM - Power Manager | The Power Manager (PM) controls the oscillators and PLLs, and generates the clocks and resets in the device |
| Power Clocks Library | |
| Power Manager (PM) | This is a stub on the AVR UC3 Power Manager(PM) for the sleepmgr service |
| USB Host Driver (UHD) | The UHD driver provides a low-level abstraction of the host controller hardware |
| USBB Host Driver | USBB low-level driver for USB host mode |
| USB Host Interface (UHI) | The UHI provides a common API for all classes, and this is used by UHC for the main control of USB host interface |
| UHI for Mass Storage Class | Common APIs used by high level application to use this USB host class |
| Implementation of UHI Mass Storage Class | Class internal implementation |
| USB host Mass Storage interface for control access module | Layer added on UHI MSC interface to allow the usage of control access module |
| Implementation of USB host Mass Storage | Interface for control access module |
| Interface with USB Host Core (UHC) | Define and functions required by UHC |
| USB Stack | This stack includes the USB Device Stack, USB Host Stack and common definitions |
| USBB OTG Driver | USBB low-level driver for OTG features |
| Atmel USB Identifiers | This module defines Atmel PID and VIDs constants |
| USB Protocol Definitions | This module defines constants and data structures provided by the USB 2.0 specification |
| USB Mass Storage Class (MSC) protocol definitions | |
| SCSI Block Commands protocol definitions | |
| SCSI Primary Commands protocol definitions | |
| Memory Control Access | Common abstraction layer for memory interfaces |
| FAT file system | FAT file system driver that provides an interface for accessing a FAT file system located on a memory device |
| Generic board support | The generic board support module includes board-specific definitions and function prototypes, such as the board initialization function |
| GPIO - General-Purpose Input/Output | GPIO gives access to the MCU pins |
1.8.5