PIC18F2220_07 Datasheet, PDF (27/386 Pages) Microchip Technology – 28/40/44-Pin High-Performance, Enhanced Flash Microcontrollers with 10-Bit A/D and nanoWatt Technology

PIC18F2220/2320/4220/4320
FIGURE 2-8:
PIC18F2X20/4X20 CLOCK DIAGRAM
OSC2
OSC1
T1OSO
T1OSI
Primary Oscillator
Sleep
Secondary Oscillator
T1OSCEN
Enable
Oscillator
OSCCON<6:4>
Internal
Oscillator
Block
INTRC
Source
8 MHz
(INTOSC)
PIC18F2X20/4X20 _{CONFIG1H <3:0>}
4 x PLL ^HSPLL
Clock
Control
LP, XT, HS, RC, EC
T1OSC
Clock Source Option
for Other Modules
OSCCON<6:4> _{Internal Oscillator}
8 MHz
111
4 MHz
110
2 MHz
101
1 MHz
100
500 kHz
011
250 kHz
010
125 kHz
001
31 kHz
000
OSCCON<1:0>
Peripherals
CPU
IDLEN
WDT, FSCM
© 2007 Microchip Technology Inc.
DS39599F-page 25