All Enhanced Extended Regular 12 bits 14 bits 16 bits RAM
size
ROM
size
EEPROM
size
Common
SFRs
Features Configuration Bits RAM map SFR map
PIC18F2539
CONFIG1H (address:0x300001, mask:0x07, default:0x02)
OSC -- Oscillator (bitmask:0x07)
OSC = HS 0xFA HS oscillator.
OSC = EC 0xFC EC oscillator w/ OSC2 configured as divide-by-4 clock output.
OSC = ECIO 0xFD EC oscillator w/ OSC2 configured as RA6.
OSC = HSPLL 0xFE HS oscillator with PLL enabled; clock frequency = (4 x FOSC).
CONFIG2L (address:0x300002, mask:0x0F, default:0x0F)
PWRT -- Power-up Timer Enable bit (bitmask:0x01)
PWRT = ON 0xFE PWRT enabled.
PWRT = OFF 0xFF PWRT disabled.
BOR -- Brown-out Reset Enable bit (bitmask:0x02)
BOR = OFF 0xFD Brown-out Reset disabled.
BOR = ON 0xFF Brown-out Reset enabled.
BORV -- Brown-out Reset Voltage bits (bitmask:0x0C)
BORV = 45 0xF3 VBOR set to 4.5V.
BORV = 42 0xF7 VBOR set to 4.2V.
BORV = 27 0xFB VBOR set to 2.7V.
BORV = 25 0xFF VBOR set to 2.5V.
CONFIG2H (address:0x300003, mask:0x0F, default:0x0F)
WDT -- Watchdog Timer Enable bit (bitmask:0x01)
WDT = OFF 0xFE WDT disabled (control is placed on the SWDTEN bit).
WDT = ON 0xFF WDT enabled.
WDTPS -- Watchdog Timer Postscale Select bits (bitmask:0x0E)
WDTPS = 1 0xF1 1:1.
WDTPS = 2 0xF3 1:2.
WDTPS = 4 0xF5 1:4.
WDTPS = 8 0xF7 1:8.
WDTPS = 16 0xF9 1:16.
WDTPS = 32 0xFB 1:32.
WDTPS = 64 0xFD 1:64.
WDTPS = 128 0xFF 1:128.
CONFIG4L (address:0x300006, mask:0x85, default:0x85)
STVR -- Stack Full/Underflow Reset Enable bit (bitmask:0x01)
STVR = OFF 0xFE Stack Full/Underflow will not cause RESET.
STVR = ON 0xFF Stack Full/Underflow will cause RESET.
LVP -- Low Voltage ICSP Enable bit (bitmask:0x04)
LVP = OFF 0xFB Low Voltage ICSP disabled.
LVP = ON 0xFF Low Voltage ICSP enabled.
DEBUG -- Background Debugger Enable bit (bitmask:0x80)
DEBUG = ON 0x7F Background Debugger enabled. RB6 and RB7 are dedicated to In-Circuit Debug.
DEBUG = OFF 0xFF Background Debugger disabled. RB6 and RB7 configured as general purpose I/O pins.
CONFIG5L (address:0x300008, mask:0x07, default:0x07)
CP0 -- Code Protection bit (bitmask:0x01)
CP0 = ON 0xFE Block 0 (000200-001FFFh) code protected.
CP0 = OFF 0xFF Block 0 (000200-001FFFh) not code protected.
CP1 -- Code Protection bit (bitmask:0x02)
CP1 = ON 0xFD Block 1 (002000-003FFFh) code protected.
CP1 = OFF 0xFF Block 1 (002000-003FFFh) not code protected.
CP2 -- Code Protection bit (bitmask:0x04)
CP2 = ON 0xFB Block 2 (004000-005FFFh) code protected.
CP2 = OFF 0xFF Block 2 (004000-005FFFh) not code protected.
CONFIG5H (address:0x300009, mask:0xC0, default:0xC0)
CPB -- Boot Block Code Protection bit (bitmask:0x40)
CPB = ON 0xBF Boot block (000000-0001FFh) code protected.
CPB = OFF 0xFF Boot block (000000-0001FFh) not code protected.
CPD -- Data EEPROM Code Protection bit (bitmask:0x80)
CPD = ON 0x7F Data EEPROM code protected.
CPD = OFF 0xFF Data EEPROM not code protected.
CONFIG6L (address:0x30000A, mask:0x07, default:0x07)
WRT0 -- Write Protection bit (bitmask:0x01)
WRT0 = ON 0xFE Block 0 (000200h-001FFFh) write protected.
WRT0 = OFF 0xFF Block 0 (000200h-001FFFh) not write protected.
WRT1 -- Write Protection bit (bitmask:0x02)
WRT1 = ON 0xFD Block 1 (002000-003FFFh) write protected.
WRT1 = OFF 0xFF Block 1 (002000-003FFFh) not write protected.
WRT2 -- Write Protection bit (bitmask:0x04)
WRT2 = ON 0xFB Block 2 (004000-005FFFh) write protected.
WRT2 = OFF 0xFF Block 2 (004000-005FFFh) not write protected.
CONFIG6H (address:0x30000B, mask:0xE0, default:0xE0)
WRTC -- Configuration Register Write Protection bit (bitmask:0x20)
WRTC = ON 0xDF Configuration registers (300000-3000FFh) write protected.
WRTC = OFF 0xFF Configuration registers (300000-3000FFh) not write protected.
WRTB -- Boot Block Write Protection bit (bitmask:0x40)
WRTB = ON 0xBF Boot block (000000-0001FFh) write protected.
WRTB = OFF 0xFF Boot block (000000-0001FFh) not write protected.
WRTD -- Data EEPROM Write Protection bit (bitmask:0x80)
WRTD = ON 0x7F Data EEPROM write protected.
WRTD = OFF 0xFF Data EEPROM not write protected.
CONFIG7L (address:0x30000C, mask:0x07, default:0x07)
EBTR0 -- Table Read Protection bit (bitmask:0x01)
EBTR0 = ON 0xFE Block 0 (000200h-001FFFh) protected from Table Reads executed in other blocks.
EBTR0 = OFF 0xFF Block 0 (000200h-001FFFh) not protected from Table Reads executed in other blocks.
EBTR1 -- Table Read Protection bit (bitmask:0x02)
EBTR1 = ON 0xFD Block 1 (002000-003FFFh) protected from Table Reads executed in other blocks.
EBTR1 = OFF 0xFF Block 1 (002000-003FFFh) not protected from Table Reads executed in other blocks.
EBTR2 -- Table Read Protection bit (bitmask:0x04)
EBTR2 = ON 0xFB Block 2 (004000-005FFFh) protected from Table Reads executed in other blocks.
EBTR2 = OFF 0xFF Block 2 (004000-005FFFh) not protected from Table Reads executed in other blocks.
CONFIG7H (address:0x30000D, mask:0x40, default:0x40)
EBTRB -- Boot Block Table Read Protection bit (bitmask:0x40)
EBTRB = ON 0xBF Boot block (000000-0001FFh) protected from Table Reads executed in other blocks.
EBTRB = OFF 0xFF Boot block (000000-0001FFh) not protected from Table Reads executed in other blocks.

This page generated automatically by the device-help.pl program (2017-05-13 09:29:50 UTC) from the 8bit_device.info file (rev: 1.36) of mpasmx and from the gputils source package (rev: svn 1308). The mpasmx is included in the MPLAB X.