PIC16F913ESLASHP301 datasheet(72/272 Pages) MICROCHIP

72 / 272 page

PIC16F917/916/914/913

DS41250E-page 70

Preliminary

OSCCON – OSCILLATOR CONTROL REGISTER (ADDRESS: 8Fh)

U-0

R/W-1

R/W-0

R-q

R-0

R/W-0

—

IRCF2

IRCF1

IRCF0

OSTS(1)

HTS

LTS

SCS

bit 7

bit 0

bit 7

Unimplemented: Read as ‘0’

bit 6-4

IRCF<2:0>: Internal Oscillator Frequency Select bits

000

=31 kHz

001

=125 kHz

010

=250 kHz

011

=500 kHz

100

=1 MHz

101

=2 MHz

110

=4 MHz

111

=8 MHz

bit 3

OSTS: Oscillator Start-up Time-out Status bit

= Device is running from the external system clock defined by FOSC<2:0>

= Device is running from the internal system clock (HFINTOSC or LFINTOSC)

bit 2

HTS: HFINTOSC (High Frequency – 8 MHz to 125 kHz) Status bit

=HFINTOSC is stable

= HFINTOSC is not stable

bit 1

LTS: LFINTOSC (Low Frequency – 31 kHz) Stable bit

= LFINTOSC is stable

= LFINTOSC is not stable

bit 0

SCS: System Clock Select bit

= Internal oscillator is used for system clock

= Clock source defined by FOSC<2:0>

Note 1: The value of the OSTS bit on device power-up is dependent on the value of the

Configuration Word (CONFIG) of the device. The value of the OSTS bit will be ‘0’

on a device Power-on Reset (POR) or any automatic clock switch, which may occur

from Two-Speed Start-up or Fail-Safe Clock Monitor, if the following conditions are

true:

OSTS = 0 if:

FOSC<2:0> = 000 (LP) or 001 (XT) or 010 (HS)

and

IESO = 1 or FSCM = 1

(IESO will be enabled automatically if FSCM is enabled)

If any of the above conditions are not met, the value of the OSTS bit will be ‘1’ on

a device POR. See Section 4.6 “Two-Speed Clock Start-up Mode” and

Section 4.7 “Fail-Safe Clock Monitor” for more details.

Legend:

R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

- n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

x = Bit is unknown

q = value depends on condition

PIC16F913E/P301 数据表(PDF) 72 Page - Microchip Technology

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