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# 3.18.5 Clock Generator (CLOCK)

The PIC32MX clock system has the following modules and features:

- A Total of Five External and Internal Oscillator Options as Clock Sources

- On-Chip PLL with User-Selectable Multiplier and Output Divider to Boost Operating Frequency on Select Internal and External Oscillator Sources

- On-Chip User-Selectable Divisor Postscaler on Select Oscillator Sources

- Software-Controllable Switching between Various Clock Sources

- A Fail-Safe Clock Monitor (FSCM) that Detects Clock Failure and Permits Safe Application Recovery or Shutdown

- Flexible Reference Clock Output

## Using The Library

The Clock peripheral library initializes the clock system as configured by the user in the MCC easy view.

## Library Interface

Clock Generator peripheral library provides the following interfaces:

Functions

Name | Description
--- | ---
CLK_Initialize | Initializes hardware of the System Clock and Peripheral Clock