PIC16F688-ISLASHML datasheet(113/204 Pages) MICROCHIP

113 / 204 page

DS41203E-page 111

PIC16F688

CONFIG: CONFIGURATION WORD REGISTER

Reserved

FCMEN

IESO

BOREN1(1)

BOREN0(1)

bit 15

bit 8

CPD(2)

CP(3)

MCLRE(4)

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

Reserved: Reserved bits. Do Not Use.

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(2)

= Program memory code protection is disabled

= Program memory code protection is enabled

bit 5

MCLRE: MCLR Pin Function Select bit(3)

= MCLR pin function is MCLR

= 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

bit 2-0

FOSC<2:0>: Oscillator Selection bits

111

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

110

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

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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