© 2013 Microchip Technology Inc. DS70005131A-page 1
Oscillator Module
HIGHLIGHTS
This section of the manual contains the following major topics:
1.0 Introduction ....................................................................................................................... 2
2.0 CPU Clocking.................................................................................................................... 5
3.0 Oscillator Configuration Registers .................................................................................... 6
4.0 Special Function Registers ............................................................................................... 9
5.0 Primary Oscillator (POSC).............................................................................................. 21
6.0 Internal Fast RC (FRC) Oscillator................................................................................... 25
7.0 Phase-Locked Loop (PLL) .............................................................................................. 26
8.0 Secondary Oscillator (SOSC) ......................................................................................... 31
9.0 Low-Power RC (LPRC) Oscillator................................................................................... 32
10.0 Auxiliary Oscillator .......................................................................................................... 33
11.0 Auxiliary Phase-Locked Loop (APLL) ............................................................................. 34
12.0 Auxiliary PLL (x16).......................................................................................................... 37
13.0 Fail-Safe Clock Monitor (FSCM)..................................................................................... 39
14.0 Clock Switching............................................................................................................... 40
15.0 Two-Speed Start-up ........................................................................................................ 44
16.0 Reference Clock Output.................................................................................................. 44
17.0 Linear Feedback Shift Register....................................................................................... 44
18.0 Register Maps................................................................................................................. 45
19.0 Related Application Notes............................................................................................... 46
20.0 Revision History.............................................................................................................. 47
