PIC18F23K20 MICROCHIP [Microchip Technology], PIC18F23K20 Datasheet - Page 41

• Manufacturer Part Number: PIC18F23K20
• Description: 28/40/44-Pin Flash Microcontrollers with nanoWatt XLP Technology
• Manufacturer: MICROCHIP [Microchip Technology]

FIGURE 2-9:
TABLE 2-3:
 2010 Microchip Technology Inc.
CONFIG1H
INTCON
OSCCON
OSCTUNE
PIE2
PIR2
IPR2
Legend:
Note 1:
Clock Monitor Output
Name
Sample Clock
Note:
x = unknown, u = unchanged, – = unimplemented locations read as ‘0’. Shaded cells are not used by oscillators.
Other (non Power-up) Resets include MCLR Reset and Watchdog Timer Reset during normal operation.
GIE/GIEH PEIE/GIEL TMR0IE
OSCFIF
INTSRC
OSCFIE
OSCFIP
OSCFIF
System
IDLEN
Output
IESO
Bit 7
Clock
(Q)
SUMMARY OF REGISTERS ASSOCIATED WITH CLOCK SOURCES
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.
FSCM TIMING DIAGRAM
FCMEN
PLLEN
IRCF2
C1IE
Bit 6
C1IF
—
IRCF1
TUN5
Bit 5
C2IE
C2IF
—
—
Test
INT0IE
IRCF0
TUN4
Bit 4
EEIE
EEIF
—
—
FOSC3
BCLIE
BCLIF
OSTS
TUN3
RBIE
Bit 3
—
TMR0IF
HLVDIE
HLVDIF
FOSC2
PIC18F2XK20/4XK20
TUN2
IOFS
Bit 2
—
Test
TMR3IE
TMR3IF
Oscillator
Failure
FOSC1
INT0IF
SCS1
TUN1
Bit 1
—
CCP2IE
CCP2IF
FOSC0
SCS0
TUN0
RBIF
Bit 0
—
Detected
0000 000x
0011 q000
0000 0000
0000 0000
0000 0000
1111 1111
POR, BOR
Value on
Failure
—
Test
DS41303G-page 41
0000 000x
0011 q000
000u uuuu
0000 0000
0000 0000
1111 1111
Value on
Resets
all other
—
(1)