PIC16F87 datasheet(130/230 Pages) MICROCHIP

130 / 230 page

PIC16F87/88

DS30487D-page 130

 2002-2013 Microchip Technology Inc.

CONFIG1: CONFIGURATION WORD 1 REGISTER (ADDRESS 2007h)

R/P-1

CCPMX DEBUG WRT1 WRT0

CPD

LVP

BOREN MCLRE FOSC2 PWRTEN WDTEN FOSC1 FOSC0

bit 13

bit 0

bit 13

CP: Flash Program Memory Code Protection bits

= Code protection off

= 0000h to 0FFFh code-protected (all protected)

bit 12

CCPMX: CCP1 Pin Selection bit

= CCP1 function on RB0

= CCP1 function on RB3

bit 11

DEBUG: In-Circuit Debugger Mode bit

= 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 10-9

WRT<1:0>: Flash Program Memory Write Enable bits

= Write protection off

= 0000h to 00FFh write-protected, 0100h to 0FFFh may be modified by EECON control

= 0000h to 07FFh write-protected, 0800h to 0FFFh may be modified by EECON control

= 0000h to 0FFFh write-protected

bit 8

CPD: Data EE Memory Code Protection bit

= Code protection off

= Data EE memory code-protected

bit 7

LVP: Low-Voltage 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

BOREN: Brown-out Reset Enable bit

= BOR enabled

= BOR disabled

bit 5

MCLRE: RA5/MCLR/VPP Pin Function Select bit

= RA5/MCLR/VPP pin function is MCLR

= RA5/MCLR/VPP pin function is digital I/O, MCLR internally tied to VDD

bit 3

PWRTEN: Power-up Timer Enable bit

= PWRT disabled

= PWRT enabled

bit 2

WDTEN: Watchdog Timer Enable bit

= WDT enabled

= WDT disabled

bit 4, 1-0 FOSC<2:0>: Oscillator Selection bits

111

= EXTRC oscillator; CLKO function on RA6/OSC2/CLKO

110

= EXTRC oscillator; port I/O function on RA6/OSC2/CLKO

101

= INTRC oscillator; CLKO function on RA6/OSC2/CLKO pin and port I/O function on RA7/OSC1/CLKI pin

100

= INTRC oscillator; port I/O function on both RA6/OSC2/CLKO pin and RA7/OSC1/CLKI pin

011

= ECIO; port I/O function on RA6/OSC2/CLKO

010

= HS oscillator

001

= XT oscillator

000

= LP oscillator

Legend:

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

PIC16F87 Datasheet(PDF) 130 Page - Microchip Technology

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