PIC16F872 Datasheet, PDF (96/160 Pages) Microchip Technology – 28-Pin, 8-Bit CMOS FLASH Microcontroller

PIC16F872
REGISTER 11-1: CONFIGURATION WORD
CP1 CP0 DEBUG — WRT CPD LVP BODEN CP1 CP0 PWRTE WDTE
bit13
bit 13-12:
bit 5-4: CP<1:0>: Flash Program Memory Code Protection bits ⁽²⁾
11 = Code protection off
10 = 0000h to 06FFh code protected
01 = 0000h to 03FFh code protected
00 = 0000h to 07FFh code protected
bit 11:
DEBUG: In-Circuit Debugger Mode
1 = In-Circuit Debugger disabled, RB6 and RB7 are general purpose I/O pins.
0 = In-Circuit Debugger enabled, RB6 and RB7 are dedicated to the debugger.
bit 10: Unimplemented: Read as ‘1’
bit 9:
WRT: Flash Program Memory Write Enable
1 = Unprotected program memory may be written to by EECON control
0 = Unprotected program memory may not be written to by EECON control
bit 8:
CPD: Data EE Memory Code Protection
1 = Code protection off
0 = Data EEPROM memory code protected
bit 7:
bit 6:
bit 3:
LVP: Low Voltage In-Circuit Serial Programming Enable bit
1 = RB3/PGM pin has PGM function, low voltage programming enabled
0 = RB3 is digital I/O, HV on MCLR must be used for programming
BODEN: Brown-out Reset Enable bit ⁽¹⁾
1 = BOR enabled
0 = BOR disabled
PWRTE: Power-up Timer Enable bit ⁽¹⁾
1 = PWRT disabled
0 = PWRT enabled
bit 2:
WDTE: Watchdog Timer Enable bit
1 = WDT enabled
0 = WDT disabled
bit 1-0:
FOSC1:FOSC0: Oscillator Selection bits
11 = RC oscillator
10 = HS oscillator
01 = XT oscillator
00 = LP oscillator
F0SC1
F0SC0
bit0
Register: CONFIG
Address 2007h
Note 1: Enabling Brown-out Reset automatically enables Power-up Timer (PWRT), regardless of the value of bit PWRTE. Ensure
the Power-up Timer is enabled anytime Brown-out Reset is enabled.
2: All of the CP<1:0> pairs have to be given the same value to enable the code protection scheme listed.
DS30221A-page 96
Preliminary
© 1999 Microchip Technology Inc.