PIC16F631/677/685/687/689/690
REGISTER 14-1: CONFIG: CONFIGURATION WORD REGISTER
Reserved
bit 13
Reserved
FCMEN
PWRTE
IESO
BOREN1(1)
BOREN0(1)
CPD(2
bit 7
CP(3)
MCLRE(4)
WDTE
FOSC2
FOSC1
FOSC0
bit 0
bit 6
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 13-12
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
bit 9-8
BOREN<1:0>: Brown-out Reset Selection bits(1)
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
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2-0
CPD: Data Code Protection bit(2)
1= Data memory code protection is disabled
0= Data memory code protection is enabled
CP: Code Protection bit(2)
1= Program memory code protection is disabled
0= Program memory code protection is enabled
MCLRE: MCLR Pin Function Select bit(3)
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=
110=
101=
RC oscillator: CLKOUT function on RA4/OSC2/CLKOUT pin, RC on RA5/OSC1/CLKIN
RCIO oscillator: I/O function on RA4/OSC2/CLKOUT pin, RC on RA5/OSC1/CLKIN
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=
010=
001=
000=
EC: I/O function on RA4/OSC2/CLKOUT pin, CLKIN on RA5/OSC1/CLKIN
HS oscillator: High-speed crystal/resonator on RA4/OSC2/CLKOUT and RA5/OSC1/CLKIN
XT oscillator: Crystal/resonator on RA4/OSC2/CLKOUT and RA5/OSC1/CLKIN
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.
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.
2:
3:
4:
© 2007 Microchip Technology Inc.
DS41262D-page 195
MICROCHIP [ MICROCHIP ]
