PIC18F23K22 Datasheet, PDF (30/492 Pages) Microchip Technology – 28/40/44-Pin, Low-Power, High-Performance Microcontrollers with nanoWatt XLP Technology

PIC18(L)F2X/4XK22
FIGURE 2-2:
IRCF<2:0>
MFIOSEL
INTSRC
HF-16 MHZ
HF-8 MHZ
HF-4 MHZ
HF-2 MHZ
HF-1 MHZ
INTERNAL OSCILLATOR
MUX BLOCK DIAGRAM
3
111
110
101
100
011
MF-500 KHZ
HF-500 KHZ
MF-250 KHZ
HF-250 KHZ
HF-31.25 KHZ
11
MF-31.25 KHZ
LF-31.25 KHZ
10
0X
1 _{500 kHZ 010 INTOSC}
0
1 _{250 kHZ 001}
0
31.25 kHZ
000
TABLE 2-1: PLL SELECT TRUTH TABLE
Primary Clock MUX Source
FOSC<3:0>
FOSC (any source)
OSC1/OSC2 (external source)
0000-1111
0000-0111
1010-1111
INTOSC (internal source)
INTOSC (internal source)
1000-1001
FIGURE 2-3:
FOSC<3:0> = 100x
PLLCFG
PLLEN
PLL SELECT BLOCK
DIAGRAM
PLL
Select
PLLCFG
0
1
0
x
x
PLLEN
0
x
1
0
1
PLL Select
0
1
1
0
1
DS41412B-page 30
Preliminary
 2010 Microchip Technology Inc.