PIC18F2455_07 Datasheet, PDF (296/430 Pages) Microchip Technology – 28/40/44-Pin, High Performance, Enhanced Flash, USB Microcontrollers with nanoWatt Technology

PIC18F2455/2550/4455/4550
REGISTER 25-9: CONFIG6L: CONFIGURATION REGISTER 6 LOW (BYTE ADDRESS 30000Ah)
U-0
—
bit 7
U-0
U-0
U-0
R/C-1
R/C-1
R/C-1
R/C-1
—
—
—
WRT3⁽¹⁾
WRT2
WRT1
WRT0
bit 0
Legend:
R = Readable bit
C = Clearable bit
-n = Value when device is unprogrammed
U = Unimplemented bit, read as ‘0’
u = Unchanged from programmed state
bit 7-4
bit 3
bit 2
bit 1
bit 0
Unimplemented: Read as ‘0’
WRT3: Write Protection bit⁽¹⁾
1 = Block 3 (006000-007FFFh) is not write-protected
0 = Block 3 (006000-007FFFh) is write-protected
WRT2: Write Protection bit
1 = Block 2 (004000-005FFFh) is not write-protected
0 = Block 2 (004000-005FFFh) is write-protected
WRT1: Write Protection bit
1 = Block 1 (002000-003FFFh) is not write-protected
0 = Block 1 (002000-003FFFh) is write-protected
WRT0: Write Protection bit
1 = Block 0 (000800-001FFFh) or (001000-001FFFh) is not write-protected
0 = Block 0 (000800-001FFFh) or (001000-001FFFh) is write-protected
Note 1: Unimplemented in PIC18FX455 devices; maintain this bit set.
REGISTER 25-10: CONFIG6H: CONFIGURATION REGISTER 6 HIGH (BYTE ADDRESS 30000Bh)
R/C-1
R/C-1
R-1
U-0
U-0
U-0
U-0
U-0
WRTD
WRTB
WRTC⁽¹⁾
—
—
—
—
—
bit 7
bit 0
Legend:
R = Readable bit
C = Clearable bit
-n = Value when device is unprogrammed
U = Unimplemented bit, read as ‘0’
u = Unchanged from programmed state
bit 7
bit 6
bit 5
bit 4-0
WRTD: Data EEPROM Write Protection bit
1 = Data EEPROM is not write-protected
0 = Data EEPROM is write-protected
WRTB: Boot Block Write Protection bit
1 = Boot block (000000-0007FFh) is not write-protected
0 = Boot block (000000-0007FFh) is write-protected
WRTC: Configuration Register Write Protection bit⁽¹⁾
1 = Configuration registers (300000-3000FFh) are not write-protected
0 = Configuration registers (300000-3000FFh) are write-protected
Unimplemented: Read as ‘0’
Note 1: This bit is read-only in normal execution mode; it can be written only in Program mode.
DS39632D-page 294
Preliminary
© 2007 Microchip Technology Inc.