Microchip Technology DM183021 Data Sheet
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
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:
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
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:
for block boundary addresses.