PIC18LF2X_13 Datasheet, PDF (45/560 Pages) Microchip Technology – PIC18(L)F2X/45K50 USB Flash MCU Product Brief

PIC18(L)F2X/4XK22
FIGURE 2-11:
FSCM TIMING DIAGRAM
Sample Clock
System
Clock
Output
Clock Monitor Output
(Q)
OSCFIF
Oscillator
Failure
Failure
Detected
Note:
Test
Test
Test
The system clock is normally at a much higher frequency than the sample clock. The relative frequencies in
this example have been chosen for clarity.
TABLE 2-4: REGISTERS ASSOCIATED WITH CLOCK SOURCES
Name
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Register
on Page
INTCON GIE/GIEH PEIE/GIEL TMR0IE INT0IE
RBIE TMR0IF INT0IF RBIF
116
IPR2
OSCFIP C1IP
C2IP
EEIP BCL1IP HLVDIP TMR3IP CCP2IP 129
OSCCON IDLEN
IRCF<2:0>
OSTS HFIOFS
SCS<1:0>
32
OSCCON2 PLLRDY SOSCRUN
—
MFIOSEL SOSCGO PRISD MFIOFS LFIOFS 33
OSCTUNE INTSRC PLLEN
TUN<5:0>
37
PIE2
OSCFIE C1IE
C2IE
EEIE BCL1IE HLVDIE TMR3IE CCP2IE 125
PIR2
OSCFIF C1IF
C2IF
EEIF BCL1IF HLVDIF TMR3IF CCP2IF 120
Legend: — = unimplemented locations, read as ‘0’. Shaded bits are not used by clock sources.
TABLE 2-5: CONFIGURATION REGISTERS ASSOCIATED WITH CLOCK SOURCES
Name
Bit 7 Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Register
on Page
CONFIG1H
IESO FCMEN PRICLKEN PLLCFG
FOSC<3:0>
357
CONFIG2L
—
—
—
BORV<1:0>
BOREN<1:0> PWRTEN ₃₅₈
CONFIG3H MCLRE —
P2BMX T3CMX HFOFST CCP3MX PBADEN CCP2MX ₃₆₀
Legend: — = unimplemented locations, read as ‘0’. Shaded bits are not used for clock sources.
 2010-2012 Microchip Technology Inc.
DS41412E-page 45