Features Configuration Bits RAM map SFR map

PIC18LF252
CONFIG1H (address:0x300001, mask:0x27, default:0x27)
OSC -- Oscillator Selection bits (bitmask:0x07)
OSC = LP | 0xF8 | LP oscillator.
OSC = XT | 0xF9 | XT oscillator.
OSC = HS | 0xFA | HS oscillator.
OSC = RC | 0xFB | RC 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).
OSC = RCIO | 0xFF | RC oscillator w/ OSC2 configured as RA6.
OSCS -- Oscillator System Clock Switch Enable bit (bitmask:0x20)
OSCS = ON | 0xDF | Oscillator system clock switch option is enabled (oscillator switching is enabled).
OSCS = OFF | 0xFF | Oscillator system clock switch option is disabled (main oscillator is source).
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 = 20 | 0xFF | VBOR set to 2.0V.
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.
CONFIG3H (address:0x300005, mask:0x01, default:0x01)
CCP2MUX -- CCP2 Mux bit (bitmask:0x01)
CCP2MUX = OFF | 0xFE | CCP2 input/output is multiplexed with RB3.
CCP2MUX = ON | 0xFF | CCP2 input/output is multiplexed with RC1.
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:0x0F, default:0x0F)
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.
CP3 -- Code Protection bit (bitmask:0x08)
CP3 = ON | 0xF7 | Block 3 (006000-007FFFh) code protected.
CP3 = OFF | 0xFF | Block 3 (006000-007FFFh) 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:0x0F, default:0x0F)
WRT0 -- Write Protection bit (bitmask:0x01)
WRT0 = ON | 0xFE | Block 0 (000200-001FFFh) write protected.
WRT0 = OFF | 0xFF | Block 0 (000200-001FFFh) 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.
WRT3 -- Write Protection bit (bitmask:0x08)
WRT3 = ON | 0xF7 | Block 3 (006000-007FFFh) write protected.
WRT3 = OFF | 0xFF | Block 3 (006000-007FFFh) 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:0x0F, default:0x0F)
EBTR0 -- Table Read Protection bit (bitmask:0x01)
EBTR0 = ON | 0xFE | Block 0 (000200-001FFFh) protected from Table Reads executed in other blocks.
EBTR0 = OFF | 0xFF | Block 0 (000200-001FFFh) 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.
EBTR3 -- Table Read Protection bit (bitmask:0x08)
EBTR3 = ON | 0xF7 | Block 3 (006000-007FFFh) protected from Table Reads executed in other blocks.
EBTR3 = OFF | 0xFF | Block 3 (006000-007FFFh) 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 (2022-01-30 15:56:10 UTC) from the 8bit_device.info file (rev: 1.44) of mpasmx and from the gputils source package (rev: svn Unversioned directory). The mpasmx is included in the MPLAB X.