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
PIC18LF4221
CONFIG1H (address:0x300001, mask:0xCF, default:0x07)
OSC -- Oscillator (bitmask:0x0F)
OSC = LP 0xF0 LP Oscillator.
OSC = XT 0xF1 XT Oscillator.
OSC = HS 0xF2 HS Oscillator.
OSC = RC 0xF3 External RC oscillator, CLKO function on RA6.
OSC = EC 0xF4 EC oscillator, CLKO function on RA6.
OSC = ECIO 0xF5 EC oscillator, port function on RA6.
OSC = HSPLL 0xF6 HS oscillator, PLL enabled (Clock Frequency = 4 x FOSC1).
OSC = RCIO 0xF7 External RC oscillator, port function on RA6.
OSC = INTIO2 0xF8 Internal oscillator block, port function on RA6 and RA7.
OSC = INTIO1 0xF9 Internal oscillator block, CLKO function on RA6, port function on RA7.
FCMEN -- Fail-Safe Clock Monitor Enable bit (bitmask:0x40)
FCMEN = OFF 0xBF Fail-Safe Clock Monitor disabled.
FCMEN = ON 0xFF Fail-Safe Clock Monitor enabled.
IESO -- Internal/External Oscillator Switchover bit (bitmask:0x80)
IESO = OFF 0x7F Oscillator Switchover mode disabled.
IESO = ON 0xFF Oscillator Switchover mode enabled.
CONFIG2L (address:0x300002, mask:0x1F, default:0x1F)
PWRT -- Power-up Timer Enable bit (bitmask:0x01)
PWRT = ON 0xFE PWRT enabled.
PWRT = OFF 0xFF PWRT disabled.
BOR -- Brown-out Reset Enable bits (bitmask:0x06)
BOR = OFF 0xF9 Brown-out Reset disabled in hardware and software.
BOR = SOFT 0xFB Brown-out Reset enabled and controlled by software (SBOREN is enabled).
BOR = NOSLP 0xFD Brown-out Reset enabled in hardware only and disabled in Sleep mode (SBOREN is disabled).
BOR = ON 0xFF Brown-out Reset enabled in hardware only (SBOREN is disabled).
BORV -- Brown-out Reset Voltage bits (bitmask:0x18)
BORV = 0 0xE7 Maximum Setting.
BORV = 1 0xEF
BORV = 2 0xF7
BORV = 3 0xFF Minimum Setting.
CONFIG2H (address:0x300003, mask:0x1F, default:0x1F)
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:0x1E)
WDTPS = 1 0xE1 1:1.
WDTPS = 2 0xE3 1:2.
WDTPS = 4 0xE5 1:4.
WDTPS = 8 0xE7 1:8.
WDTPS = 16 0xE9 1:16.
WDTPS = 32 0xEB 1:32.
WDTPS = 64 0xED 1:64.
WDTPS = 128 0xEF 1:128.
WDTPS = 256 0xF1 1:256.
WDTPS = 512 0xF3 1:512.
WDTPS = 1024 0xF5 1:1024.
WDTPS = 2048 0xF7 1:2048.
WDTPS = 4096 0xF9 1:4096.
WDTPS = 8192 0xFB 1:8192.
WDTPS = 16384 0xFD 1:16384.
WDTPS = 32768 0xFF 1:32768.
CONFIG3H (address:0x300005, mask:0x87, default:0x83)
CCP2MX -- CCP2 MUX bit (bitmask:0x01)
CCP2MX = RB3 0xFE CCP2 input/output is multiplexed with RB3.
CCP2MX = RC1 0xFF CCP2 input/output is multiplexed with RC1.
PBADEN -- PORTB A/D Enable bit (bitmask:0x02)
PBADEN = DIG 0xFD PORTB<4:0> pins are configured as digital I/O on Reset.
PBADEN = ANA 0xFF PORTB<4:0> pins are configured as analog input channels on Reset.
LPT1OSC -- Low-Power Timer1 Oscillator Enable bit (bitmask:0x04)
LPT1OSC = OFF 0xFB Timer1 configured for higher power operation.
LPT1OSC = ON 0xFF Timer1 configured for low-power operation.
MCLRE -- MCLR Pin Enable bit (bitmask:0x80)
MCLRE = OFF 0x7F RE3 input pin enabled; MCLR disabled.
MCLRE = ON 0xFF MCLR pin enabled; RE3 input pin disabled.
CONFIG4L (address:0x300006, mask:0xF5, default:0x85)
STVREN -- Stack Full/Underflow Reset Enable bit (bitmask:0x01)
STVREN = OFF 0xFE Stack full/underflow will not cause Reset.
STVREN = ON 0xFF Stack full/underflow will cause Reset.
LVP -- Single-Supply ICSP Enable bit (bitmask:0x04)
LVP = OFF 0xFB Single-Supply ICSP disabled.
LVP = ON 0xFF Single-Supply ICSP enabled.
BBSIZ -- Boot Block Size Select bits (bitmask:0x30)
BBSIZ = BB256 0xCF 256 Word.
BBSIZ = BB512 0xFF 512 Word.
XINST -- Extended Instruction Set Enable bit (bitmask:0x40)
XINST = OFF 0xBF Instruction set extension and Indexed Addressing mode disabled (Legacy mode).
XINST = ON 0xFF Instruction set extension and Indexed Addressing mode 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:0x03, default:0x03)
CP0 -- Code Protection bit (bitmask:0x01)
CP0 = ON 0xFE Block 0 code-protected.
CP0 = OFF 0xFF Block 0 not code-protected.
CP1 -- Code Protection bit (bitmask:0x02)
CP1 = ON 0xFD Block 1 code-protected.
CP1 = OFF 0xFF Block 1 not code-protected.
CONFIG5H (address:0x300009, mask:0xC0, default:0xC0)
CPB -- Boot Block Code Protection bitProtect Boot (bitmask:0x40)
CPB = ON 0xBF Boot block code-protected.
CPB = OFF 0xFF Boot block 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:0x03, default:0x03)
WRT0 -- Write Protection bit (bitmask:0x01)
WRT0 = ON 0xFE Block 0 write-protected.
WRT0 = OFF 0xFF Block 0 not write-protected.
WRT1 -- Write Protection bit (bitmask:0x02)
WRT1 = ON 0xFD Block 1 write-protected.
WRT1 = OFF 0xFF Block 1 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 write-protected.
WRTB = OFF 0xFF Boot block 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:0x03, default:0x03)
EBTR0 -- Table Read Protection bit (bitmask:0x01)
EBTR0 = ON 0xFE Block 0 protected from table reads executed in other blocks.
EBTR0 = OFF 0xFF Block 0 not protected from table reads executed in other blocks.
EBTR1 -- Table Read Protection bit (bitmask:0x02)
EBTR1 = ON 0xFD Block 1 protected from table reads executed in other blocks.
EBTR1 = OFF 0xFF Block 1 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 protected from table reads executed in other blocks.
EBTRB = OFF 0xFF Boot block not protected from table reads executed in other blocks.

This page generated automatically by the device-help.pl program (2017-05-13 09:29:51 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.