
2002 Microchip Technology Inc.
Preliminary
DS41159B-page 265
PIC18FXX8
REGISTER 24-7:
CONFIGURATION REGISTER 6 LOW (CONFIG6L: BYTE ADDRESS 30000Ah)
REGISTER 24-8:
CONFIGURATION REGISTER 6 HIGH (CONFIG6H: BYTE ADDRESS 30000Bh)
U-0
—
U-0
—
U-0
—
U-0
—
R/P-1
WRT3
(1)
R/P-1
WRT2
(1)
R/P-1
WRT1
R/P-1
WRT0
bit 7
bit 0
bit 7-4
bit 3
Unimplemented:
Read as ‘0’
WRT3:
Write Protection bit
(1)
1
= Block 3 (006000-007FFFh) not write protected
0
= Block 3 (006000-007FFFh) write protected
WRT2:
Write Protection bit
(1)
1
= Block 2 (004000-005FFFh) not write protected
0
= Block 2 (004000-005FFFh) write protected
WRT1:
Write Protection bit
1
= Block 1 (002000-003FFFh) not write protected
0
= Block 1 (002000-003FFFh) write protected
WRT0:
Write Protection bit
1
= Block 0 (000200-001FFFh) not write protected
0
= Block 0 (000200-001FFFh) write protected
bit 2
bit 1
bit 0
Note 1:
Unimplemented in PIC18FX48 devices; maintain this bit set.
Legend:
R = Readable bit
- n = Value when device is unprogrammed
P = Programmable bit
U = Unimplemented bit, read as ‘0’
u = Unchanged from programmed state
R/P-1
WRTD
bit 7
R/P-1
WRTB
R-1
WRTC
U-0
—
U-0
—
U-0
—
U-0
—
U-0
—
bit 0
bit 7
WRTD:
Data EEPROM Write Protection bit
1
= Data EEPROM not write protected
0
= Data EEPROM write protected
WRTB:
Boot Block Write Protection bit
1
= Boot Block (000000-0001FFh) not write protected
0
= Boot Block (000000-0001FFh) write protected
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 6
bit 5
bit 4-0
Unimplemented:
Read as ‘0’
Legend:
R = Readable bit
- n = Value when device is unprogrammed
P =Programmable bit
U = Unimplemented bit, read as ‘0’
u = Unchanged from programmed state