
PIC18FXX39
DS30485A-page 200
Preliminary
2002 Microchip Technology Inc.
REGISTER 20-7:
CONFIG6L: CONFIGURATION REGISTER 6 LOW (BYTE ADDRESS 30000Ah)
REGISTER 20-8:
CONFIG6H: CONFIGURATION REGISTER 6 HIGH (BYTE ADDRESS 30000Bh)
U-0
U-1
R/C-1
—
—WRT2(1)
WRT1
WRT0
bit 7
bit 0
bit 7-4
Unimplemented: Read as ‘0’
bit 3
Unimplemented and reserved: Maintain as ‘1’
bit 2
WRT2: Write Protection bit(1)
1
= Block 2 (004000-005FFFh) not write protected
0
= Block 2 (004000-005FFFh) write protected
bit 1
WRT1: Write Protection bit
1
= Block 1 (002000-003FFFh) not write protected
0
= Block 1 (002000-003FFFh) write protected
bit 0
WRT0: Write Protection bit
1
= Block 0 (000200h-001FFFh) not write protected
0
= Block 0 (000200h-001FFFh) write protected
Note 1: Unimplemented in PIC18FX439 devices; maintain this bit set.
Legend:
R = Readable bit
C = Clearable bit
U = Unimplemented bit, read as ‘0’
- n = Value when device is unprogrammed
u = Unchanged from programmed state
R/C-1
C-1
U-0
WRTD
WRTB
WRTC
—
bit 7
bit 0
bit 7
WRTD: Data EEPROM Write Protection bit
1
= Data EEPROM not write protected
0
= Data EEPROM write protected
bit 6
WRTB: Boot Block Write Protection bit
1
= Boot block (000000-0001FFh) not write protected
0
= Boot block (000000-0001FFh) write protected
bit 5
WRTC: Configuration Register Write Protection bit
1
= Configuration registers (300000-3000FFh) not write protected
0
= Configuration registers (300000-3000FFh) write protected
Note:
This bit is read only, and cannot be changed in User mode.
bit 4-0
Unimplemented: Read as ‘0’
Legend:
R = Readable bit
C = Clearable bit
U = Unimplemented bit, read as ‘0’
- n = Value when device is unprogrammed
u = Unchanged from programmed state