PIC16F18345 datasheet(50/442 Pages) MICROCHIP

50 / 442 page

PIC16(L)F18313/18323

DS40001799A-page 50

Preliminary

 2015 Microchip Technology Inc.

4.2

CONFIGURATION WORD 1: OSCILLATORS

R/P-1

U-1

R/P-1

U-1

R/P-1

FCMEN

—

CSWEN

—

—CLKOUTEN

bit 13

bit 8

U-1

R/P-1

U-1

R/P-1

—

RSTOSC2

RSTOSC1

RSTOSC0

—

FEXTOSC2

FEXTOSC1

FEXTOSC0

bit 7

bit 0

Legend:

R = Readable bit

P = Programmable bit

U = Unimplemented bit, read as ‘1’

‘0’ = Bit is cleared

‘1’ = Bit is

set

n = Value when blank or after Bulk Erase

bit 13

FCMEN:

Fail-Safe Clock Monitor Enable bit

1 = ON

FSCM timer enabled

0 = OFF

FSCM timer disabled

bit 12

Unimplemented:

Read as ‘1’

bit 11

CSWEN:

Clock Switch Enable bit

1 = ON

Writing to NOSC and NDIV is allowed

0 = OFF

The NOSC and NDIV bits cannot be changed by user software

bit 10-9

Unimplemented:

Read as ‘1’

bit 8

CLKOUTEN:

Clock Out Enable bit

If FEXTOSC = EC, HS, HT or LP, then this bit is ignored; otherwise:

1 = OFF

CLKOUT function is disabled; I/O or oscillator function on OSC2

0 = ON

CLKOUT function is enabled; FOSC/4 clock appears at OSC2

Otherwise

This bit is ignored.

bit 7

Unimplemented:

Read as ‘1’

bit 6-4

RSTOSC<2:0>:

Power-up Default Value for COSC bits

This value is the Reset default value for COSC, and selects the oscillator first used by user software

111 = EXT1X

EXTOSC operating per FEXTOSC<2:0> bits

110 = HFINT1

HFINTOSC (1 MHz)

101 =

Reserved

100 = LFINT

LFINTOSC

011 = SOSC

SOSC (32.768 kHz)

010 =

Reserved

001 = EXT4X

EXTOSC with 4x PLL; EXTOSC operating per FEXTOSC bits

000 = HFINT32

HFINTOSC (32 MHz)

bit 3

Unimplemented:

Read as ‘1’

bit 2-0

FEXTOSC<2:0>:

FEXTOSC External Oscillator mode Selection bits

111 = ECH

EC(External Clock) above 8 MHz

110 = ECM

EC(External Clock) for 100 kHz to 8 MHz

101 = ECL

EC(External Clock) below 100 kHz

100 = OFF

Oscillator not enabled

011 =

Unimplemented

010 = HS

HS(Crystal oscillator) above 8 MHz

001 = XT

HT(Crystal oscillator) above 100 kHz, below 8 MHz

000 = LP

LP(Crystal oscillator) optimized for 32.768 kHz

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