Lists the Libraries, Drivers, PLIB Drivers and System Drivers which support the 8-bit AVR families of microcontrollers in MCC Melody.

Software libraries which provide a complex set of functionalities, such as protocol support e.g., USB, TCP\IP, Data Streamer (Protocol) etc.

Drivers provide a portable functional interface to the functionalities of the peripheral. Provides an API supporting peripheral functionality.

Peripheral Libraries (PLIB) may provide firmware portability, but in general provide only a non-portable interface to peripheral functionality, in the form of an API to support peripheral functionality.

Provides system level core functionality, like Clock, Interrupt, Pins. Some of these can be device dependent.

A concise summary of the changes for each version of the AVR API Reference.