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4 System Drivers
Provides system level core functionality, like Clock, Interrupt, Pins. Some of these can be device dependent.
4.3 Config Bits - Configuration Bits

1 MCC Melody API Reference for AVR® MCU Families
Lists the Libraries, Drivers, PLIB Drivers and System Drivers which support the 8-bit AVR families of microcontrollers in MCC Melody.
2 Drivers
Drivers provide a portable functional interface to the functionalities of the peripheral. Provides an API supporting peripheral functionality.
3 PLIB Drivers
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.
4 System Drivers
Provides system level core functionality, like Clock, Interrupt, Pins. Some of these can be device dependent.
- 4.1 BOD - Brown-out Detector
- 4.2 CLKCTRL - Clock Controller
- 4.3 Config Bits - Configuration Bits
  - 4.3.1 FUSES
    FUSES - Configuration and User Fuses
  - 4.3.2 FUSE bits with three fuse bytes
    Fuse Bits with Extended Fuse Byte, Fuse High Byte and Fuse Low Byte
- 4.4 CPU - Central Processor Unit
- 4.5 Interrupt Manager
- 4.6 Pin Manager
- 4.7 RSTCTRL - Reset Controller
- 4.8 SLPCTRL - Sleep Controller
- 4.9 System Manager
- 4.10 WDT - Watchdog Timer
5 Revision History
A concise summary of the changes for each version of the AVR API Reference.
Microchip Information

4.3 Config Bits - Configuration Bits

The MPLAB® Code Configurator (MCC) Melody Configuration Bits System driver generates APIs to support Configuration Bits-specific peripheral functionality on target MCUs.

The Configuration Bits modules are categorized as follows:

FUSES - Configuration and User Fuses
FUSES with Extended Fuse Byte, Fuse High Byte and Fuse Low Byte