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5 System Drivers
Provides system level core functionality, like Clock, Interrupt, Pins. Some of these can be device dependent.
5.2 Configuration Bits and Registers for PIC16 Devices

1 MCC Melody API Reference for PIC16F / PIC18F Device Families
Lists the Libraries, Drivers, PLIB Drivers and System Drivers which support PIC16F / PIC18F families of microcontrollers in MCC Melody.
2 Libraries
Software libraries which provide a complex set of functionalities, such as protocol support e.g., USB, TCP\IP, Data Streamer (Protocol) etc.
3 Drivers
Drivers provide a portable functional interface to the functionalities of the peripheral. Provides an API supporting peripheral functionality.
4 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.
5 System Drivers
Provides system level core functionality, like Clock, Interrupt, Pins. Some of these can be device dependent.
- 5.1 CLKREF - Clock Reference
- 5.2 Configuration Bits and Registers for PIC16 Devices
  - 5.2.1 2-byte Config Bits Registers
    Configuration Registers with 2 Bytes
  - 5.2.2 3-byte Config Bits Registers
    Additional register for Watchdog Timer settings
  - 5.2.3 4-byte Config Bits Registers
    Configuration Registers with 4 Bytes
  - 5.2.4 4-byte Config Bits Registers with Clock Switching
    Also includes Fail Safe, Watchdog, and Debug settings
  - 5.2.5 5-byte Config Bits Registers
    Configuration Registers with 5 Bytes
  - 5.2.6 5-byte Config Bits Registers with Clock Switching
    Also includes Fail-Safe Clock
  - 5.2.7 5-byte Config Bits Registers with Block Write Protect
    Also includes Clock Switching, Fail Safe Enable, and DAC buffer settings
- 5.3 Configuration Bits and Registers for PIC18 Devices
- 5.4 CPU - Central Processing Unit
- 5.5 Interrupt Manager
- 5.6 MVIO - Multi-Voltage I/O
- 5.7 OSC - Clock Controller
- 5.8 Pin Manager
- 5.9 PMD - Peripheral Module Disable
- 5.10 WDT - Watchdog Timer
6 Revision History
A concise summary of the changes for each version of the PIC16F/PIC18F API Reference.
Microchip Information

5.2 Configuration Bits and Registers for PIC16 Devices

The MCC Melody Configuration Bits (Config Bits) System Driver generates APIs to support device hardware setup on target PIC16 MCUs.

The Config Bits modules are classified as follows:

2-byte Config Bits Registers
3-Byte Config Bits Registers
4-byte Config Bits Registers
4-byte Config Bits Registers with Clock Switching
5-byte Config Bits Registers
5-byte Config Bits Registers with Clock Switching
5-byte Config Bits Registers with Block Write Protect