Datasheet

PIC18F2480/2580/4480/4580
DS39637D-page 356 © 2009 Microchip Technology Inc.
REGISTER 25-10: CONFIG7L: CONFIGURATION REGISTER 7 LOW (BYTE ADDRESS 30000Ch)
U-0 U-0 U-0 U-0 R/C-1 R/C-1 R/C-1 R/C-1
— — — — EBTR3
(1,2)
EBTR2
(1,2)
EBTR1
(2)
EBTR0
(2)
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 Unimplemented: Read as ‘0’
bit 3 EBTR3: Table Read Protection bit
(1,2)
1 = Block 3 (006000-007FFFh) not protected from table reads executed in other blocks
0 = Block 3 (006000-007FFFh) protected from table reads executed in other blocks
bit 2 EBTR2: Table Read Protection bit
(1,2)
1 = Block 2 (004000-005FFFh) not protected from table reads executed in other blocks
0 = Block 2 (004000-005FFFh) protected from table reads executed in other blocks
bit 1 EBTR1: Table Read Protection bit
(2)
1 = Block 1 (002000-003FFFh) not protected from table reads executed in other blocks
0 = Block 1 (002000-003FFFh) protected from table reads executed in other blocks
bit 0 EBTR0: Table Read Protection bit
(2)
1 = Block 0 (000800-001FFFh) not protected from table reads executed in other blocks
0 = Block 0 (000800-001FFFh) protected from table reads executed in other blocks
Note 1: Unimplemented in PIC18FX480 devices; maintain this bit set.
2: It is recommended to enable the corresponding CPx bit to protect the block from external read operations.
REGISTER 25-11: CONFIG7H: CONFIGURATION REGISTER 7 HIGH (BYTE ADDRESS 30000Dh)
U-0 R/C-1 U-0 U-0 U-0 U-0 U-0 U-0
— EBTRB
(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 EBTRB: Boot Block Table Read Protection bit
(1)
1 = Boot Block (000000-0007FFh) not protected from table reads executed in other blocks
0 = Boot Block (000000-0007FFh) protected from table reads executed in other blocks
bit 5-0 Unimplemented: Read as ‘0’
Note 1: It is recommended to enable the corresponding CPx bit to protect the block from external read operations.