Datasheet

PIC10(L)F320/322

DS41585A-page 30 Preliminary  2011 Microchip Technology Inc.

4.4 Oscillator Control Registers

4.4.1 OSCILLATOR CONTROL

The Oscillator Control (OSCCON) register (Register 4-2)

displays the oscillator readiness, stability and allows

frequency selection of the internal oscillator (INTOSC)

system clock.

U-0 R/W-1/1 R/W-1/1 R/W-0/0 R-0/0 U-0 R-0/0 R-0/0

— IRCF<2:0> HFIOFR —LFIOFRHFIOFS

bit 7 bit 0

Legend:

R = Readable bit W = Writable bit U = Unimplemented bit, read as ‘0’

u = Bit is unchanged x = Bit is unknown -n/n = Value at POR and BOR/Value at all other Resets

‘1’ = Bit is set ‘0’ = Bit is cleared q = Value depends on condition

bit 7 Unimplemented: Read as ‘0’

bit 6-4 IRCF<2:0>: INTOSC (F

OSC) Frequency Select bits

111 = 16 MHz

110 = 8 MHz (default value)

101 = 4 MHz

100 = 2 MHz

011 = 1 MHz

010 = 500 kHz

001 = 250 kHz

000 = 31 kHz (LFINTOSC)

bit 3 HFIOFR: High-Frequency Internal Oscillator Ready bit

1 = 16 MHz Internal Oscillator (HFINTOSC) is ready

0 = 16 MHz Internal Oscillator (HFINTOSC) is not ready

bit 2 Unimplemented: Read as ‘0’

bit 1 LFIOFR: Low-Frequency Internal Oscillator Ready bit

1 = 31 kHz Internal Oscillator (LFINTOSC) is ready

0 = 31 kHz Internal Oscillator (LFINTOSC) is not ready

bit 0 HFIOFS: High-Frequency Internal Oscillator Stable bit

1 = 16 MHz Internal Oscillator (HFINTOSC) is stable

0 = 16 MHz Internal Oscillator (HFINTOSC) is not stable