PIC18F1220 MICROCHIP [Microchip Technology], PIC18F1220 Datasheet - Page 19

• Manufacturer Part Number: PIC18F1220
• Description: 18/20/28-Pin High-Performance, Enhanced Flash Microcontrollers with 10-bit A/D and nanoWatt Technology
• Manufacturer: MICROCHIP [Microchip Technology]

REGISTER 2-2:
 2004 Microchip Technology Inc.
bit 7
bit 6-4
bit 3
bit 2
bit 1-0
OSCCON REGISTER
bit 7
IDLEN: Idle Enable bits
1 = Idle mode enabled; CPU core is not clocked in power managed modes
0 = Run mode enabled; CPU core is clocked in Run modes, but not Sleep mode
IRCF2:IRCF0: Internal Oscillator Frequency Select bits
111 = 8 MHz (8 MHz source drives clock directly)
110 = 4 MHz
101 = 2 MHz
100 = 1 MHz
011 = 500 kHz
010 = 250 kHz
001 = 125 kHz
000 = 31 kHz (INTRC source drives clock directly)
OSTS: Oscillator Start-up Time-out Status bit
1 = Oscillator Start-up Timer time-out has expired; primary oscillator is running
0 = Oscillator Start-up Timer time-out is running; primary oscillator is not ready
IOFS: INTOSC Frequency Stable bit
1 = INTOSC frequency is stable
0 = INTOSC frequency is not stable
SCS1:SCS0: System Clock Select bits
1x = Internal oscillator block (RC modes)
01 = Timer1 oscillator (Secondary modes)
00 = Primary oscillator (Sleep and PRI_IDLE modes)
Legend:
R = Readable bit
-n = Value at POR
IDLEN
R/W-0
Note 1: Depends on state of the IESO bit in Configuration Register 1H.
IRCF2
R/W-0
IRCF1
R/W-0
W = Writable bit
‘1’ = Bit is set
R/W-0
IRCF0
PIC18F1220/1320
OSTS
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
R
(1)
IOFS
R-0
x = Bit is unknown
R/W-0
SCS1
DS39605C-page 17
R/W-0
SCS0
bit 0