PIC18F2420/2520/4420/4520
REGISTER 23-10: CONFIG7L: CONFIGURATION REGISTER 7 LOW (BYTE ADDRESS 30000Ch)
U-0
—
U-0
—
U-0
—
U-0
—
R/C-1
EBTR3(1)
R/C-1
EBTR2(1)
R/C-1
R/C-1
EBTR1
EBTR0
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
bit 3
Unimplemented: Read as ‘0’
EBTR3: Table Read Protection bit(1)
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
bit 1
bit 0
EBTR2: Table Read Protection bit(1)
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
EBTR1: Table Read Protection bit
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
EBTR0: Table Read Protection bit
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 PIC18F2420/4420 devices; maintain this bit set.
REGISTER 23-11: 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
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
bit 6
Unimplemented: Read as ‘0’
EBTRB: Boot Block Table Read Protection bit
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’
DS39631E-page 256
© 2008 Microchip Technology Inc.
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