Datasheet
2010 Microchip Technology Inc. DS41302D-page 109
PIC12F609/615/617/12HV609/615
REGISTER 12-2: CONFIG – CONFIGURATION WORD (ADDRESS: 2007h) FOR PIC12F617 ONLY
U-1 U-1 R/P-1 R/P-1 R/P-1 R/P-1 R/P-1 R/P-1 R/P-1 R/P-1 R/P-1 R/P-1 R/P-1 R/P-1
— — WRT1 WRT0 BOREN1 BOREN0 IOSCFS CP MCLRE PWRTE WDTE FOSC2 F0SC1 F0SC0
bit
13
bit 0
bit 13-12 Unimplemented: Read as ‘1’
bit 11-10 WRT<1:0>: Flash Program Memory Self Write Enable bits
11 = Write protection off
10 = 000h to 1FFh write protected, 200h to 7FFh may be modified by PMCON1 control
01 = 000h to 3FFh write protected, 400h to 7FFh may be modified by PMCON1 control
00 = 000h to 7FFh write protected, entire program memory is write protected.
bit 9-8 BOREN<1:0>: Brown-out Reset Enable bits
11 = BOR enabled
10 = BOR disabled during Sleep and enabled during operation
0X = BOR disabled
bit 7 IOSCFS: Internal Oscillator Frequency Select
1 =8 MHz
0 =4 MHz
bit 6 CP
: Code Protection
1 = Program memory is not code protected
0 = Program memory is external read and write protected
bit 5 MCLRE: MCLR
Pin Function Select
1 =MCLR
pin is MCLR function and weak internal pull-up is enabled
0 =MCLR
pin is alternate function, MCLR function is internally disabled
bit 4 PWRTE
: Power-up Timer Enable bit
(1)
1 = PWRT disabled
0 = PWRT enabled
bit 3 WDTE: Watchdog Timer Enable bit
1 = WDT enabled
0 = WDT disabled
bit 2-0 FOSC<2:0>: Oscillator Selection bits
000 =LP oscillator: Low-power crystal on RA5/T1CKI/OSC1/CLKIN and RA4/AN3/T1G
/OSC2/CLKOUT
001 =XT oscillator: Crystal/resonator on RA5/T1CKI/OSC1/CLKIN and RA4/AN3/T1G/
OSC2/CLKOUT
010 =HS oscillator: High-speed crystal/resonator on RA5/T1CKI/OSC1/CLKIN and RA4/AN3/T1G
/OSC2/CLKOUT
011 =EC: I/O function on RA4/AN3/T1G
/OSC2/CLKOUT, CLKIN on RA5/T1CKI/OSC1/CLKIN
100 =INTOSCIO oscillator: I/O function on RA4/AN3/T1G
/OSC2/CLKOUT, I/O function on RA5/T1CKI/OSC1/CLKIN
101 =INTOSC oscillator: CLKOUT function on RA4/AN3/T1G
/OSC2/CLKOUT, I/O function on RA5/T1CKI/OSC1/
CLKIN
110 =EXTRCIO oscillator: I/O function on RA4/AN3/T1G
/OSC2/CLKOUT, RC on RA5/T1CKI/OSC1/CLKIN
111 =EXTRC oscillator: CLKOUT function on RA4/AN3/T1G
/OSC2/CLKOUT, RC on RA5/T1CKI/OSC1/CLKIN
Note 1:Enabling Brown-out Reset does not automatically enable the Power-up Timer (PWRT).
Legend:
R = Readable bit W = Writable bit U = Unimplemented bit, read as ‘1’ P = Programmable
-n = Value at POR 1 = bit is set 0 = bit is cleared x = bit is unknown