Datasheet

PIC18F2450/4450
DS39760D-page 200 © 2008 Microchip Technology Inc.
REGISTER 18-9: CONFIG6L: CONFIGURATION REGISTER 6 LOW (BYTE ADDRESS 30000Ah)
U-0 U-0 U-0 U-0 U-0 U-0 R/C-1 R/C-1
— — — — — —WRT1WRT0
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 7-2 Unimplemented: Read as ‘0’
bit 1 WRT1: Write Protection bit
1 = Block 1 (002000-003FFFh) is not write-protected
0 = Block 1 (002000-003FFFh) is write-protected
bit 0 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
REGISTER 18-10: CONFIG6H: CONFIGURATION REGISTER 6 HIGH (BYTE ADDRESS 30000Bh)
U-0 R/C-1 R-1 U-0 U-0 U-0 U-0 U-0
—WRTBWRTC
(1)
— — — — —
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 Unimplemented: Read as ‘0’
bit 6 WRTB: Boot Block Write Protection bit
1 = Boot block (000000-0007FFh) or (000000-000FFFh) is not write-protected
0 = Boot block (000000-0007FFh) or (000000-000FFFh) is write-protected
bit 5 WRTC: Configuration Register Write Protection bit
(1)
1 = Configuration registers (300000-3000FFh) are not write-protected
0 = Configuration registers (300000-3000FFh) 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.