PIC18F2420/2520/4420/4520
REGISTER 23-8: CONFIG6L: CONFIGURATION REGISTER 6 LOW (BYTE ADDRESS 30000Ah)
U-0
—
U-0
—
U-0
—
U-0
—
R/C-1
WRT3(1)
R/C-1
WRT2(1)
R/C-1
WRT1
R/C-1
WRT0
bit 7
bit 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
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
bit 2
bit 1
bit 0
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 (000800-001FFFh) not write-protected
0= Block 0 (000800-001FFFh) write-protected
Note 1: Unimplemented in PIC18F2420/4420 devices; maintain this bit set.
REGISTER 23-9: CONFIG6H: CONFIGURATION REGISTER 6 HIGH (BYTE ADDRESS 30000Bh)
R/C-1
R/C-1
R/C-1
WRTC(1)
U-0
—
U-0
—
U-0
—
U-0
—
U-0
—
WRTD
WRTB
bit 7
bit 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
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 (000000-0007FFh) not write-protected
0= Boot block (000000-0007FFh) write-protected
bit 5
WRTC: Configuration Register Write Protection bit(1)
1= Configuration registers (300000-3000FFh) not write-protected
0= Configuration registers (300000-3000FFh) write-protected
bit 4-0
Unimplemented: Read as ‘0’
Note 1: This bit is read-only in normal execution mode; it can be written only in Program mode.
© 2008 Microchip Technology Inc.
DS39631E-page 255
MICROCHIP [ MICROCHIP ]
