PIC16F684 datasheet(100/192 Pages) MICROCHIP

100 / 192 page

PIC16F684

DS41202F-page 98

CONFIG: CONFIGURATION WORD REGISTER

—

FCMEN

IESO

BOREN1

BOREN0

bit 15

bit 8

CPD

MCLRE

PWRTE

WDTE

FOSC2

FOSC1

FOSC0

bit 7

bit 0

Legend:

R = Readable bit

W = Writable bit

P = Programmable’

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

x = Bit is unknown

bit 15-12

Unimplemented: Read as ‘1’

bit 11

FCMEN: Fail-Safe Clock Monitor Enabled bit

= Fail-Safe Clock Monitor is enabled

= Fail-Safe Clock Monitor is disabled

bit 10

IESO: Internal External Switchover bit

= Internal External Switchover mode is enabled

= Internal External Switchover mode is disabled

bit 9-8

BOREN<1:0>: Brown-out Reset Selection bits(1)

= BOR enabled

= BOR enabled during operation and disabled in Sleep

= BOR controlled by SBOREN bit of the PCON register

= BOR disabled

bit 7

CPD: Data Code Protection bit(2)

= Data memory code protection is disabled

= Data memory code protection is enabled

bit 6

CP: Code Protection bit(3)

= Program memory code protection is disabled

= Program memory code protection is enabled

bit 5

MCLRE: RA3/MCLR pin function select bit(4)

= RA3/MCLR pin function is MCLR

= RA3/MCLR pin function is digital input, MCLR internally tied to VDD

bit 4

PWRTE: Power-up Timer Enable bit

= PWRT disabled

= PWRT enabled

bit 3

WDTE: Watchdog Timer Enable bit

= WDT enabled

= WDT disabled and can be enabled by SWDTEN bit of the WDTCON register

bit 2-0

FOSC<2:0>: Oscillator Selection bits

111

= RC oscillator: CLKOUT function on RA4/OSC2/CLKOUT pin, RC on RA5/OSC1/CLKIN

110

= RCIO oscillator: I/O function on RA4/OSC2/CLKOUT pin, RC on RA5/OSC1/CLKIN

101

= INTOSC oscillator: CLKOUT function on RA4/OSC2/CLKOUT pin, I/O function on RA5/OSC1/CLKIN

100

= INTOSCIO oscillator: I/O function on RA4/OSC2/CLKOUT pin, I/O function on RA5/OSC1/CLKIN

011

= EC: I/O function on RA4/OSC2/CLKOUT pin, CLKIN on RA5/OSC1/CLKIN

010

= HS oscillator: High-speed crystal/resonator on RA4/OSC2/CLKOUT and RA5/OSC1/CLKIN

001

= XT oscillator: Crystal/resonator on RA4/OSC2/CLKOUT and RA5/OSC1/CLKIN

000

= LP oscillator: Low-power crystal on RA4/OSC2/CLKOUT and RA5/OSC1/CLKIN

Note

Enabling Brown-out Reset does not automatically enable Power-up Timer.

The entire data EEPROM will be erased when the code protection is turned off.

The entire program memory will be erased when the code protection is turned off.

When MCLR is asserted in INTOSC or RC mode, the internal clock oscillator is disabled.

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