Datasheet
© 2009 Microchip Technology Inc. DS41341E-page 95
PIC16F72X/PIC16LF72X
8.0 DEVICE CONFIGURATION
Device Configuration consists of Configuration Word 1
and Configuration Word 2 registers, Code Protection
and Device ID.
8.1 Configuration Words
There are several Configuration Word bits that allow
different oscillator and memory protection options.
These are implemented as Configuration Word 1
register at 2007h and Configuration Word 2 register at
2008h. These registers are only accessible during
programming.
REGISTER 8-1: CONFIG1: CONFIGURATION WORD REGISTER 1
R/P-1 R/P-1 U-1
(4)
R/P-1 R/P-1 R/P-1
— —DEBUGPLLEN — BORV BOREN1 BOREN0
bit 15 bit 8
U-1
(4)
R/P-1 R/P-1 R/P-1 R/P-1 R/P-1 R/P-1 R/P-1
—CPMCLRE PWRTE WDTE FOSC2 FOSC1 FOSC0
bit 7 bit 0
Legend: P = Programmable bit
R = Readable bit W = Writable bit U = Unimplemented bit, read as ‘0’
-n = Value at POR ‘1’ = Bit is set ‘0’ = Bit is cleared x = Bit is unknown
bit 13 DEBUG
: In-Circuit Debugger Mode bit
1 = In-Circuit Debugger disabled, RB6/ICSPCLK and RB7/ICSPDAT are general purpose I/O pins
0 = In-Circuit Debugger enabled, RB6/ICSPCLK and RB7/ICSPDAT are dedicated to the debugger
bit 12 PLLEN: INTOSC PLL Enable bit
0 = INTOSC Frequency is 500 kHz
1 = INTOSC Frequency is 16 MHz (32x)
bit 11 Unimplemented: Read as ‘1’
bit 10 BORV: Brown-out Reset Voltage selection bit
0 = Brown-out Reset Voltage (V
BOR) set to 2.5 V nominal
1 = Brown-out Reset Voltage (V
BOR) set to 1.9 V nominal
bit 9-8 BOREN<1:0>: Brown-out Reset Selection bits
(1)
0x = BOR disabled (Preconditioned State)
10 = BOR enabled during operation and disabled in Sleep
11 = BOR enabled
bit 7 Unimplemented: Read as ‘1’
bit 6 CP
: Code Protection bit
(2)
1 = Program memory code protection is disabled
0 = Program memory code protection is enabled
bit 5 MCLRE: RE3/MCLR
pin function select bit
(3)
1 = RE3/MCLR pin function is MCLR
0 = RE3/MCLR pin function is digital input, MCLR internally tied to VDD
bit 4 PWRTE: Power-up Timer Enable bit
1 = PWRT disabled
0 = PWRT enabled
bit 3 WDTE: Watchdog Timer Enable bit
1 = WDT enabled
0 = WDT disabled
Note 1: Enabling Brown-out Reset does not automatically enable Power-up Timer.
2: The entire program memory will be erased when the code protection is turned off.
3: When MCLR
is asserted in INTOSC or RC mode, the internal clock oscillator is disabled.
4: MPLAB
®
IDE masks unimplemented Configuration bits to ‘0’.