Microchip Technology Microstick for the 3V PIC24F K-series DM240013-1 DM240013-1 Data Sheet
Product codes
DM240013-1
PIC24F16KL402 FAMILY
DS31037B-page 178
2011 Microchip Technology Inc.
REGISTER 23-4:
FOSC: OSCILLATOR CONFIGURATION REGISTER
R/P-0
R/P-0
R/P-1
R/P-1
R/P-1
R/P-0
R/P-1
R/P-1
FCKSM1
FCKSM0
SOSCSEL
POSCFREQ1 POSCFREQ0 OSCIOFNC
POSCMD1
POSCMD0
bit 7
bit 0
Legend:
R = Readable bit
R = Readable bit
P = Programmable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
bit 7-6
FCKSM<1:0>:
Clock Switching and Monitor Selection Configuration bits
1x
= Clock switching is disabled, Fail-Safe Clock Monitor is disabled
01
= Clock switching is enabled, Fail-Safe Clock Monitor is disabled
00
= Clock switching is enabled, Fail-Safe Clock Monitor is enabled
bit 5
SOSCSEL:
Secondary Oscillator Power Selection Configuration bit
1
= Secondary oscillator is configured for high-power operation
0
= Secondary oscillator is configured for low-power operation
bit 4-3
POSCFREQ<1:0>:
Primary Oscillator Frequency Range Configuration bits
11
= Primary oscillator/external clock input frequency is greater than 8 MHz
10
= Primary oscillator/external clock input frequency is between 100 kHz and 8 MHz
01
= Primary oscillator/external clock input frequency is less than 100 kHz
00
= Reserved; do not use
bit 2
OSCIOFNC:
CLKO Enable Configuration bit
1
= CLKO output signal is active on the OSCO pin; primary oscillator must be disabled or configured
for the External Clock mode (EC) for the CLKO to be active (POSCMD<1:0> = 11 or 00)
0
= CLKO output is disabled
bit 1-0
POSCMD<1:0>:
Primary Oscillator Configuration bits
11
= Primary Oscillator mode is disabled
10
= HS Oscillator mode is selected
01
= XT Oscillator mode is selected
00
= External Clock mode is selected