PIC18F44K22-I/SO View Datasheet(PDF) - Microchip Technology

Part Name

Description

Manufacturer

PIC18F44K22-I/SO

28/40/44-Pin, Low-Power,High-Performance Microcontrollers with XLP Technology

Microchip Technology 

PIC18(L)F2X/4XK22

REGISTER 2-2: OSCCON2: OSCILLATOR CONTROL REGISTER 2

R-0/0

R-0/q

U-0

R/W-0/0

R/W-0/u

R/W-1/1

PLLRDY SOSCRUN

—

MFIOSEL SOSCGO(1) PRISD

bit 7

R-x/u

MFIOFS

R-0/0

LFIOFS

bit 0

Legend:

R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

‘1’ = Bit is set

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

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

q = depends on condition

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): Oscillator Start Control bit

1 = Secondary oscillator is running even if no other sources are requesting it

0 = Secondary 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

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 VDD Reset.

 2010 Microchip Technology Inc.

Preliminary

DS41412A-page 33

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