Datasheet

 2011-2013 Microchip Technology Inc. DS30001037C-page 177

PIC24F16KL402 FAMILY

R/P-1 R/P-1 R/P-1 U-0 U-0 R/P-0 R/P-0 R/P-1

IESO LPRCSEL SOSCSRC

— — FNOSC2 FNOSC1 FNOSC0

bit 7 bit 0

Legend:

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 IESO: Internal External Switchover bit

1 = Internal External Switchover mode is enabled (Two-Speed Start-up is enabled)

0 = Internal External Switchover mode is disabled (Two-Speed Start-up is disabled)

bit 6 LPRCSEL: Internal LPRC Oscillator Power Select bit

1 = High-Power/High-Accuracy mode

0 = Low-Power/Low-Accuracy mode

bit 5 SOSCSRC: Secondary Oscillator Clock Source Configuration bit

1 = SOSC analog crystal function is available on the SOSCI/SOSCO pins

0 = SOSC crystal is disabled; digital SCLKI function is selected on the SOSCO pin

bit 4-3 Unimplemented: Read as ‘0’

bit 2-0 FNOSC<2:0>: Oscillator Selection bits

111 = 8 MHz FRC Oscillator with Divide-by-N (FRCDIV)

110 = 500 kHz Low-Power FRC Oscillator with Divide-by-N (LPFRCDIV)

101 = Low-Power RC Oscillator (LPRC)

100 = Secondary Oscillator (SOSC)

011 = Primary Oscillator with PLL module (HS+PLL, EC+PLL)

010 = Primary Oscillator (XT, HS, EC)

001 = 8 MHz FRC Oscillator with Divide-by-N with PLL module (FRCDIV+PLL)

000 = 8 MHz FRC Oscillator (FRC)