Datasheet

 2010-2012 Microchip Technology Inc. DS41412E-page 33

PIC18(L)F2X/4XK22

R-0/0 R-0/q U-0 R/W-0/0 R/W-0/u R/W-1/1 R-x/u R-0/0

PLLRDY SOSCRUN

—

MFIOSEL SOSCGO

(1)

PRISD MFIOFS LFIOFS

bit 7 bit 0

Legend:

R = Readable bit W = Writable bit U = Unimplemented bit, read as ‘0’ q = depends on condition

‘1’ = Bit is set ‘0’ = Bit is cleared x = Bit is unknown

-n/n = Value at POR and BOR/Value at all other Resets

bit 7 PLLRDY: PLL Run Status bit

1 = System clock comes from 4xPLL

0 = System clock comes from an oscillator, other than 4xPLL

bit 6 SOSCRUN: SOSC Run Status bit

1 = System clock comes from secondary SOSC

0 = System clock comes from an oscillator, other than SOSC

bit 5 Unimplemented: Read as ‘0’.

bit 4 MFIOSEL: MFINTOSC Select bit

1 = MFINTOSC is used in place of HFINTOSC frequencies of 500 kHz, 250 kHz and 31.25 kHz

0 = MFINTOSC is not used

bit 3 SOSCGO

(1)

: Secondary Oscillator Start Control bit

1 = Secondary oscillator is enabled.

0 = Secondary oscillator is shut off if no other sources are requesting it.

bit 2 PRISD: Primary Oscillator Drive Circuit Shutdown bit

1 = Oscillator drive circuit on

0 = Oscillator drive circuit off (zero power)

bit 1 MFIOFS: MFINTOSC Frequency Stable bit

1 = MFINTOSC is stable

0 = MFINTOSC is not stable

bit 0 LFIOFS: LFINTOSC Frequency Stable bit

1 = LFINTOSC is stable

0 = LFINTOSC is not stable

Note 1: The SOSCGO bit is only reset on a POR Reset.