PIC16F87XA
REGISTER 14-1: CONFIGURATION WORD (ADDRESS 2007h)(1)
R/P-1
CP
U-0
—
R/P-1
R/P-1
R/P-1 R/P-1 R/P-1
CPD LVP
R/P-1
U-0
—
U-0
—
R/P-1
PWRTEN WDTEN F0SC1 F0SC0
bit0
R/P-1
R/P-1
R/P-1
DEBUG WRT1 WRT0
BOREN
bit13
bit 13
CP: FLASH Program Memory Code Protection bit
1= Code protection off
0= All program memory code protected
bit 12
bit 11
Unimplemented: Read as ‘1’
DEBUG: In-Circuit Debugger Mode bit
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 10-9
WRT1:WRT0 FLASH Program Memory Write Enable bits
For PIC16F876A/877A:
11= Write protection off; all program memory may be written to by EECON control
10= 0000h to 00FFh write protected; 0100h to 1FFFh may be written to by EECON control
01= 0000h to 07FFh write protected; 0800h to 1FFFh may be written to by EECON control
00= 0000h to 0FFFh write protected; 1000h to 1FFFh may be written to by EECON control
For PIC16F873A/874A:
11= Write protection off; all program memory may be written to by EECON control
10= 0000h to 00FFh write protected; 0100h to 0FFFh may be written to by EECON control
01= 0000h to 03FFh write protected; 0400h to 0FFFh may be written to by EECON control
00= 0000h to 07FFh write protected; 0800h to 0FFFh may be written to by EECON control
bit 8
bit 7
bit 6
CPD: Data EEPROM Memory Code Protection bit
1= Data EEPROM code protection off
0= Data EEPROM code protected
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
BOREN: Brown-out Reset Enable bit
1= BOR enabled
0= BOR disabled
bit 5-4
bit 3
Unimplemented: Read as ‘1’
PWRTEN: Power-up Timer Enable bit
1= PWRT disabled
0= PWRT enabled
bit 2
WDTEN: 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
Note 1: The erased (unprogrammed) value of the configuration word is 3FFFh.
Legend:
R = Readable bit
P = Programmable bit
U = Unimplemented bit, read as ‘0’
u = Unchanged from programmed state
- n = Value when device is unprogrammed
DS39582A-page 142
AdvanceInformation
2001 Microchip Technology Inc.
MICROCHIP [ MICROCHIP ]
