PIC18LF24K Datasheet, PDF (35/594 Pages) –

FIGURE 4-1:
SIMPLIFIED PIC^® MCU CLOCK SOURCE BLOCK DIAGRAM
CLKIN/OSC1
External
Oscillator
(EXTOSC)
CLKOUT/OSC2
SOSCIN/SOSCI
Secondary
Oscillator
(SOSC)
SOSCO
LFINTOSC
31 kHz
Oscillator
HFINTOSC
FRQ<3:0>
1,2,4,8,12,16,32,48,64
MHz
Oscillator
MFINTOSC
31.25 kHz and 500 kHz
Oscillator
4x PLL
COSC<2:0>
111
010
100
101
110
Reserved 011
Reserved 001
Reserved 000
CDIV<4:0>
512 ₁₀₀₁
256 ₁₀₀₀
128 ₀₁₁₁
64 ₀₁₁₀
32 ₀₁₀₁
16
0100
8
0011
4
0010
2
0001
1
0000
Sleep
Sleep
Idle
SYSCMD
LFINTOSC is used to
monitor system clock
FSCM
To Peripherals
To Peripherals
To Peripherals
To Peripherals
Rev. 10-000208D
5/10/2016
System Clock
Peripheral Clock