PIC18C242 MICROCHIP [Microchip Technology], PIC18C242 Datasheet - Page 182

• Manufacturer Part Number: PIC18C242
• Description: High-Performance Microcontrollers with 10-Bit A/D
• Manufacturer: MICROCHIP [Microchip Technology]

PIC18CXX2
Register 18-1: Configuration Register 1 High (CONFIG1H: Byte Address 300001h)
bit 7-6
bit 5
bit 4-3
bit 2-0
Register 18-2: Configuration Register 1 Low (CONFIG1L: Byte Address 300000h)
DS39026B-page 182
Reserved
bit 7
Reserved: Read as ’1’
OSCSEN: Oscillator System Clock Switch Enable bit
1 = Oscillator system clock switch option is disabled (Main oscillator is source)
0 = Oscillator system clock switch option is enabled
Reserved: Read as ’0’
FOSC2:FOSC0: Oscillator Selection bits
111 = RC oscillator w/ OSC2 configured as RA6
110 = HS oscillator with PLL enabled/CLock frequency = (4 x Fosc)
101 = EC oscillator w/ OSC2 configured as RA6
100 = EC oscillator w/ OSC2 configured as divide by 4 clock output
011 = RC oscillator
010 = HS oscillator
001 = XT oscillator
000 = LP oscillator
Legend:
R = Readable bit
- n = Value when device is unprogrammed
bit 7
CP: Code Protection bits (apply when in Code Protected Microcontroller Mode)
1 = Program memory code protection off
0 = All of program memory code protected
Legend:
R = Readable bit
- n = Value when device is unprogrammed
R/P-1
R/P-1
CP
(Oscillator switching is enabled)
Reserved
R/P-1
R/P-1
CP
P = Programmable bit
P = Programmable bit
OSCSEN
R/P-1
R/P-1
CP
R/P-1
CP
Preliminary
U-0
—
U = Unimplemented bit, read as ‘0’
u = Unchanged from programmed state
U = Unimplemented bit, read as ‘0’
u = Unchanged from programmed state
R/P-1
CP
U-0
—
FOSC2
R/P-1
R/P-1
CP
FOSC1
R/P-1
R/P-1
CP
7/99 Microchip Technology Inc.
bit 0
bit 0
FOSC0
R/P-1
R/P-1
CP