PIC18F2331_10 Datasheet, PDF (35/392 Pages) Microchip Technology – 28/40/44-Pin Enhanced Flash Microcontrollers with nanoWatt Technology, High-Performance PWM and A/D

PIC18F2331/2431/4331/4431
FIGURE 3-8:
PIC18F2331/2431/4331/4431 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)
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
 2010 Microchip Technology Inc.
DS39616D-page 35