PIC18F2331/2431/4331/4431
REGISTER 23-9: CONFIG6L: CONFIGURATION REGISTER 6 LOW (BYTE ADDRESS 30000Ah)
U-0
—
U-0
—
U-0
—
U-0
—
R/P-1
WRT3(1,2)
R/P-1
WRT2(1,2)
R/P-1
WRT1(2)
R/P-1
WRT0(2)
bit 7
bit 0
Legend:
R = Readable bit
P = Programmable 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(1,2)
1= Block 3 is not write-protected
0= Block 3 is write-protected
bit 2
bit 1
bit 0
WRT2: Write Protection bit(1,2)
1= Block 2 is not write-protected
0= Block 2 is write-protected
WRT1: Write Protection bit(2)
1= Block 1 is not write-protected
0= Block 1 is write-protected
WRT0: Write Protection bit(2)
1= Block 0 is not write-protected
0= Block 0 is write-protected
Note 1: Unimplemented in PIC18F2331/4331 devices; maintain this bit set.
2: Refer to Figure 23-5 for block boundary addresses.
REGISTER 23-10: CONFIG6H: CONFIGURATION REGISTER 6 HIGH (BYTE ADDRESS 30000Bh)
R/P-1
WRTD(2)
R/P-1
WRTB(2)
R-1
WRTC(1,2)
U-0
—
U-0
—
U-0
—
U-0
—
U-0
—
bit 7
bit 0
Legend:
R = Readable bit
P = Programmable 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(2)
1= Data EEPROM is not write-protected
0= Data EEPROM is write-protected
bit 6
WRTB: Boot Block Write Protection bit(2)
1= Boot block is not write-protected
0= Boot block is write-protected
bit 5
WRTC: Configuration Register Write Protection bit(1,2)
1= Configuration registers are not write-protected
0= Configuration registers are 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.
2: Refer to Figure 23-5 for block boundary addresses.
2010 Microchip Technology Inc.
DS39616D-page 271
MICROCHIP [ MICROCHIP ]
