PIC16F684_07 Datasheet, PDF (100/192 Pages) Microchip Technology – 14-Pin, Flash-Based 8-Bit CMOS Microcontrollers with nanoWatt Technology

PIC16F684
REGISTER 12-1: CONFIG: CONFIGURATION WORD REGISTER
—
bit 15
—
—
—
FCMEN
IESO
BOREN1
BOREN0
bit 8
CPD
bit 7
CP
MCLRE
PWRTE
WDTE
FOSC2
FOSC1
FOSC0
bit 0
Legend:
R = Readable bit
-n = Value at POR
W = Writable bit
‘1’ = Bit is set
P = Programmable’
‘0’ = Bit is cleared
U = Unimplemented bit, read as ‘0’
x = Bit is unknown
bit 15-12
bit 11
bit 10
bit 9-8
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2-0
Unimplemented: Read as ‘1’
FCMEN: Fail-Safe Clock Monitor Enabled bit
1 = Fail-Safe Clock Monitor is enabled
0 = Fail-Safe Clock Monitor is disabled
IESO: Internal External Switchover bit
1 = Internal External Switchover mode is enabled
0 = Internal External Switchover mode is disabled
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
CPD: Data Code Protection bit⁽²⁾
1 = Data memory code protection is disabled
0 = Data memory code protection is enabled
CP: Code Protection bit⁽³⁾
1 = Program memory code protection is disabled
0 = Program memory code protection is enabled
MCLRE: RA3/MCLR pin function select bit⁽⁴⁾
1 = RA3/MCLR pin function is MCLR
0 = RA3/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 and can be enabled by SWDTEN bit of the WDTCON register
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 1:
2:
3:
4:
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.
DS41202F-page 98
© 2007 Microchip Technology Inc.