PIC16F688
REGISTER 11-1: CONFIG: CONFIGURATION WORD REGISTER
(1)
(1)
Reserved
bit 15
Reserved
Reserved
Reserved
FCMEN
IESO
BOREN1
BOREN0
bit 8
(2)
(3)
(4)
CPD
CP
MCLRE
PWRTE
WDTE
FOSC2
FOSC1
FOSC0
bit 0
bit 7
Legend:
R = Readable bit
W = Writable bit
‘1’ = Bit is set
P = Programmable’
‘0’ = Bit is cleared
U = Unimplemented bit, read
as ‘0’
-n = Value at POR
x = Bit is unknown
bit 15-12
bit 11
Reserved: Reserved bits. Do Not Use.
FCMEN: Fail-Safe Clock Monitor Enabled bit
1= Fail-Safe Clock Monitor is enabled
0= Fail-Safe Clock Monitor is disabled
bit 10
IESO: Internal External Switchover bit
1= Internal External Switchover mode is enabled
0= Internal External Switchover mode is disabled
(1)
bit 9-8
BOREN<1:0>: Brown-out Reset Selection bits
11= BOR enabled
10= BOR enabled during operation and disabled in Sleep
01= BOR controlled by SBOREN bit of the PCON register
00= BOR disabled
(2)
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2-0
CPD: Data Code Protection bit
1= Data memory code protection is disabled
0= Data memory code protection is enabled
(2)
CP: Code Protection bit
1= Program memory code protection is disabled
0= Program memory code protection is enabled
(3)
MCLRE: MCLR Pin Function Select bit
1= MCLR pin function is MCLR
0= MCLR pin function is digital input, MCLR internally tied to VDD
PWRTE: Power-up Timer Enable bit
1= PWRT disabled
0= PWRT enabled
WDTE: Watchdog Timer Enable bit
1= WDT enabled
0= WDT disabled
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 1: Enabling Brown-out Reset does not automatically enable Power-up Timer.
2: The entire data EEPROM will be erased when the code protection is turned off.
3: The entire program memory will be erased when the code protection is turned off.
4: When MCLR is asserted in INTOSC or RC mode, the internal clock oscillator is disabled.
© 2007 Microchip Technology Inc.
DS41203D-page 111
MICROCHIP [ MICROCHIP ]
