PIC876 datasheet(122/218 Pages) MICROCHIP

122 / 218 page

PIC16F87X

DS30292C-page 120

 2001 Microchip Technology Inc.

CONFIGURATION WORD (ADDRESS 2007h)(1)

CP1

CP0

DEBUG

—

WRT

CPD

LVP

BODEN

CP1

CP0

PWRTE

WDTE

F0SC1

F0SC0

bit13

bit0

bit 13-12,

bit 5-4

CP1:CP0: FLASH Program Memory Code Protection bits(2)

= Code protection off

= 1F00h to 1FFFh code protected (PIC16F877, 876)

= 0F00h to 0FFFh code protected (PIC16F874, 873)

= 1000h to 1FFFh code protected (PIC16F877, 876)

= 0800h to 0FFFh code protected (PIC16F874, 873)

= 0000h to 1FFFh code protected (PIC16F877, 876)

= 0000h to 0FFFh code protected (PIC16F874, 873)

bit 11

DEBUG: In-Circuit Debugger Mode

= In-Circuit Debugger disabled, RB6 and RB7 are general purpose I/O pins

= 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

= Unprotected program memory may be written to by EECON control

= Unprotected program memory may not be written to by EECON control

bit 8

CPD: Data EE Memory Code Protection

= Code protection off

= Data EEPROM memory code protected

bit 7

LVP: Low Voltage In-Circuit Serial Programming Enable bit

= RB3/PGM pin has PGM function, low voltage programming enabled

= RB3 is digital I/O, HV on MCLR must be used for programming

bit 6

BODEN: Brown-out Reset Enable bit(3)

= BOR enabled

= BOR disabled

bit 3

PWRTE: Power-up Timer Enable bit(3)

= PWRT disabled

= PWRT enabled

bit 2

WDTE: Watchdog Timer Enable bit

= WDT enabled

= WDT disabled

bit 1-0

FOSC1:FOSC0: Oscillator Selection bits

= RC oscillator

= HS oscillator

= XT oscillator

= LP oscillator

Note

The erased (unprogrammed) value of the configuration word is 3FFFh.

2: All of the CP1:CP0 pairs have to be given the same value to enable the code protection scheme listed.

3: Enabling Brown-out Reset automatically enables Power-up Timer (PWRT), regardless of the value of bit PWRTE.

Ensure the Power-up Timer is enabled any time Brown-out Reset is enabled.

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