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- Features
- Configuration Bits
- RAM map
- SFR map

PIC16F877A
CONFIG (address:0x2007, mask:0xFFFF)
FOSC -- Oscillator Selection bits
| FOSC = LP | 0x3FFC | LP oscillator. |
| FOSC = XT | 0x3FFD | XT oscillator. |
| FOSC = HS | 0x3FFE | HS oscillator. |
| FOSC = EXTRC | 0x3FFF | RC oscillator. |
WDTE -- Watchdog Timer Enable bit
| WDTE = OFF | 0x3FFB | WDT disabled. |
| WDTE = ON | 0x3FFF | WDT enabled. |
PWRTE -- Power-up Timer Enable bit
| PWRTE = ON | 0x3FF7 | PWRT enabled. |
| PWRTE = OFF | 0x3FFF | PWRT disabled. |
BOREN -- Brown-out Reset Enable bit
| BOREN = OFF | 0x3FBF | BOR disabled. |
| BOREN = ON | 0x3FFF | BOR enabled. |
LVP -- Low-Voltage (Single-Supply) In-Circuit Serial Programming Enable bit
| LVP = OFF | 0x3F7F | RB3 is digital I/O, HV on MCLR must be used for programming. |
| LVP = ON | 0x3FFF | RB3/PGM pin has PGM function; low-voltage programming enabled. |
CPD -- Data EEPROM Memory Code Protection bit
| CPD = ON | 0x3EFF | Data EEPROM code-protected. |
| CPD = OFF | 0x3FFF | Data EEPROM code protection off. |
WRT -- Flash Program Memory Write Enable bits
| WRT = HALF | 0x39FF | 0000h to 0FFFh write-protected; 1000h to 1FFFh may be written to by EECON control. |
| WRT = 1FOURTH | 0x3BFF | 0000h to 07FFh write-protected; 0800h to 1FFFh may be written to by EECON control. |
| WRT = 256 | 0x3DFF | 0000h to 00FFh write-protected; 0100h to 1FFFh may be written to by EECON control. |
| WRT = OFF | 0x3FFF | Write protection off; all program memory may be written to by EECON control. |
DEBUG -- In-Circuit Debugger Mode bit
| DEBUG = ON | 0x37FF | In-Circuit Debugger enabled, RB6 and RB7 are dedicated to the debugger. |
| DEBUG = OFF | 0x3FFF | In-Circuit Debugger disabled, RB6 and RB7 are general purpose I/O pins. |
CP -- Flash Program Memory Code Protection bit
| CP = ON | 0x1FFF | All program memory code-protected. |
| CP = OFF | 0x3FFF | Code protection off. |

This page generated automatically by the device-help.pl program (2012-12-22 23:50:58 UTC) from the 8bit_device.info file (rev: 1.10) of mpasmx and from the gputils source package (rev: svn 918). The mpasmx is included in the MPLAB X.