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2010-2012 Microchip Technology Inc.
DS39977F-page 225
PIC18F66K80 FAMILY
REGISTER 16-3:
OSCCON2: OSCILLATOR CONTROL REGISTER 2
U-0
R-0
U-0
RW-1
R/W-0
U-0
R-x
R/W-0
—
SOSCRUN
—SOSCDRV(1)
SOSCGO
—
MFIOFS
MFIOSEL
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
bit 7
Unimplemented:
Read as ‘0’
bit 6
SOSCRUN:
SOSC Run Status bit
1
= System clock comes from a secondary SOSC
0
= System clock comes from an oscillator other than SOSC
bit 5
Unimplemented:
Read as ‘0’
bit 4
SOSCDRV:
Secondary Oscillator Drive Control bit(1)
1
= High-power SOSC circuit selected
0
= Low/high-power select is done via the SOSCSEL<1:0> Configuration bits
bit 3
SOSCGO:
Oscillator Start Control bit
1
= Oscillator is running even if no other sources are requesting it
0
= Oscillator is shut off if no other sources are requesting it (When the SOSC is selected to run from
a digital clock input, rather than an external crystal, this bit has no effect.)
bit 2
Unimplemented:
Read as ‘0’
bit 1
MFIOFS:
MF-INTOSC Frequency Stable bit
1
= MF-INTOSC is stable
0
= MF-INTOSC is not stable
bit 0
MFIOSEL:
MF-INTOSC Select bit
1
= MF-INTOSC is used in place of HF-INTOSC frequencies of 500 kHz, 250 kHz and 31.25 kHz
0
= MF-INTOSC is not used
Note 1:
When SOSC is selected to run from a digital clock input, rather than an external crystal, this bit has no
effect.
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