PIC18F25K80 MICROCHIP [Microchip Technology], PIC18F25K80 Datasheet - Page 464

• Manufacturer Part Number: PIC18F25K80
• Manufacturer: MICROCHIP [Microchip Technology]

PIC18F66K80 FAMILY
REGISTER 28-2:
DS39977C-page 464
bit 7
Legend:
R = Readable bit
-n = Value at POR
bit 7
bit 6
bit 5
bit 4
bit 3-0
Note 1:
R/P-0
IESO
2:
Not valid for the INTIOx PLL mode.
INTIO + PLL can be enabled only by the PLLEN bit (OSCTUNE<6>). Other PLL modes can be enabled by
either the PLLEN bit or the PLLCFG (CONFIG1H<4>) bit.
IESO: Internal/External Oscillator Switchover bit
1 = Two-Speed Start-up is enabled
0 = Two-Speed Start-up is disabled
FCMEN: Fail-Safe Clock Monitor Enable bit
1 = Fail-Safe Clock Monitor is enabled
0 = Fail-Safe Clock Monitor is disabled
Unimplemented: Read as ‘ 0 ’
PLLCFG: 4X PLL Enable bit
1 = Oscillator is multiplied by 4
0 = Oscillator is used directly
FOSC<3:0>: Oscillator Selection bits
1101 = EC1, EC oscillator (low power, DC-160 kHz)
1100 = EC1IO, EC oscillator with CLKOUT function on RA6 (low power, DC-160 kHz)
1011 = EC2, EC oscillator (medium power, 160 kHz-16 MHz)
1010 = EC2IO, EC oscillator with CLKOUT function on RA6 (medium power, 160 kHz-16 MHz)
0101 = EC3, EC oscillator (high power, 16 MHz-64 MHz)
0100 = EC3IO, EC oscillator with CLKOUT function on RA6 (high power, 16 MHz-64 MHz)
0011 = HS1, HS oscillator (medium power, 4 MHz-16 MHz)
0010 = HS2, HS oscillator (high power, 16 MHz-25 MHz)
0001 = XT oscillator
0000 = LP oscillator
0111 = RC, external RC oscillator
0110 = RCIO, external RC oscillator with CKLOUT function on RA6
1000 = INTIO2, internal RC oscillator
1001 = INTIO1, internal RC oscillator with CLKOUT function on RA6
FCMEN
R/P-0
CONFIG1H: CONFIGURATION REGISTER 1 HIGH (BYTE ADDRESS 300001h)
P = Programmable bit
W = Writable bit
‘1’ = Bit is set
U-0
—
(1)
PLLCFG
U-0
Preliminary
(2)
(1)
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
FOSC3
R/P-1
(2)
FOSC2
R/P-0
(2)
 2011 Microchip Technology Inc.
x = Bit is unknown
FOSC1
R/P-0
(2)
FOSC0
R/P-0
bit 0
(2)