Datasheet

PIC18F2331/2431/4331/4431
DS39616D-page 272  2010 Microchip Technology Inc.
REGISTER 23-11: CONFIG7L: CONFIGURATION REGISTER 7 LOW (BYTE ADDRESS 30000Ch)
U-0 U-0 U-0 U-0 R/P-1 R/P-1 R/P-1 R/P-1
— — — — EBTR3
(1,2,3)
EBTR2
(1,2,3)
EBTR1
(2,3)
EBTR0
(2,3)
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 Unimplemented: Read as ‘0’
bit 3 EBTR3: Table Read Protection bit
(1,2,3)
1 = Block 3 is not protected from table reads executed in other blocks
0 = Block 3 is protected from table reads executed in other blocks
bit 2 EBTR2: Table Read Protection bit
(1,2,3)
1 = Block 2 is not protected from table reads executed in other blocks
0 = Block 2 is protected from table reads executed in other blocks
bit 1 EBTR1: Table Read Protection bit
(2,3)
1 = Block 1 is not protected from table reads executed in other blocks
0 = Block 1 is protected from table reads executed in other blocks
bit 0 EBTR0: Table Read Protection bit
(2,3)
1 = Block 0 is not protected from table reads executed in other blocks
0 = Block 0 is protected from table reads executed in other blocks
Note 1: Unimplemented in PIC18F2331/4331 devices; maintain this bit set.
2: Refer to Figure 23-5 for block boundary addresses.
3: Enabling the corresponding CPx bit is recommended to protect the block from external read operations.
REGISTER 23-12: CONFIG7H: CONFIGURATION REGISTER 7 HIGH (BYTE ADDRESS 30000Dh)
U-0 R/P-1 U-0 U-0 U-0 U-0 U-0 U-0
— EBTRB
(1,2)
— — — — — —
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 Unimplemented: Read as ‘0’
bit 6 EBTRB: Boot Block Table Read Protection bit
(1,2)
1 = Boot block is not protected from table reads executed in other blocks
0 = Boot block is protected from table reads executed in other blocks
bit 5-0 Unimplemented: Read as ‘0’
Note 1: Enabling the corresponding CPx bit is recommended to protect the block from external read operations.
2: Refer to Figure 23-5 for block boundary addresses.