PIC18F2331 Datasheet, PDF (277/396 Pages) Microchip Technology – 28/40/44-Pin Enhanced Flash Microcontrollers with nanoWatt Technology, High Performance PWM and A/D

PIC18F2331/2431/4331/4431
REGISTER 22-9:
CONFIG6L: CONFIGURATION REGISTER 6 LOW (BYTE ADDRESS 30000Ah)
U-0
U-0
U-0
U-0
R/P-1
R/P-1 R/P-1
R/P-1
—
—
—
—
WRT3⁽¹⁾ WRT2⁽¹⁾ WRT1
WRT0
bit 7
bit 0
bit 7-4
bit 3
bit 2
bit 1
bit 0
Unimplemented: Read as ‘0’
WRT3: Write Protection bit⁽¹⁾
1 = Block 3 (001800-001FFFh) not write-protected
0 = Block 3 (001800-001FFFh) write-protected
WRT2: Write Protection bit⁽¹⁾
1 = Block 2 (001000-0017FFh) not write-protected
0 = Block 2 (001000-0017FFh) write-protected
WRT1: Write Protection bit
1 = Block 1 (000800-000FFFh) not write-protected
0 = Block 1 (000800-000FFFh) write-protected
WRT0: Write Protection bit
1 = Block 0 (000200-0007FFh) not write-protected
0 = Block 0 (000200-0007FFh) write-protected
Note 1: Unimplemented in PIC18F2X31 devices; maintain this bit set.
Legend:
R = Readable bit
P = Programmable bit
- n = Value when device is unprogrammed
U = Unimplemented bit, read as ‘0’
u = Unchanged from programmed state
REGISTER 22-10: CONFIG6H: CONFIGURATION REGISTER 6 HIGH (BYTE ADDRESS 30000Bh)
R/P-1
R/P-1
R-1
U-0
U-0
U-0
U-0
U-0
WRTD WRTB WRTC
—
—
—
—
—
bit 7
bit 0
bit 7
bit 6
bit 5
bit 4-0
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 in normal Execution mode; it can be written only in
Program mode.
Unimplemented: Read as ‘0’
Legend:
R = Readable bit
P = Programmable bit
- n = Value when device is unprogrammed
U = Unimplemented bit, read as ‘0’
u = Unchanged from programmed state
 2003 Microchip Technology Inc.
Preliminary
DS39616B-page 275