PIC18F2420 MICROCHIP [Microchip Technology], PIC18F2420 Datasheet - Page 257
![no-image](/images/no-image-200.jpg)
PIC18F2420
Manufacturer Part Number
PIC18F2420
Description
28/40/44-Pin Enhanced Flash Microcontrollers with 10-Bit A/D and nanoWatt Technology
Manufacturer
MICROCHIP [Microchip Technology]
Datasheet
1.PIC18F2420.pdf
(390 pages)
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- Current page: 257 of 390
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REGISTER 23-8:
REGISTER 23-9:
2004 Microchip Technology Inc.
bit 7-4
bit 3
bit 2
bit 1
bit 0
bit 7
bit 6
bit 5
bit 4-0
CONFIG6L: CONFIGURATION REGISTER 6 LOW (BYTE ADDRESS 30000Ah)
CONFIG6H: CONFIGURATION REGISTER 6 HIGH (BYTE ADDRESS 30000Bh)
bit 7
Unimplemented: Read as ‘0’
WRT3: Write Protection bit
1 = Block 3 (006000-007FFFh) not write-protected
0 = Block 3 (006000-007FFFh) write-protected
WRT2: Write Protection bit
1 = Block 2 (004000-005FFFh) not write-protected
0 = Block 2 (004000-005FFFh) write-protected
WRT1: Write Protection bit
1 = Block 1 (002000-003FFFh) not write-protected
0 = Block 1 (002000-003FFFh) write-protected
WRT0: Write Protection bit
1 = Block 0 (000800-001FFFh) not write-protected
0 = Block 0 (000800-001FFFh) write-protected
bit 7
WRTD: Data EEPROM Write Protection bit
1 = Data EEPROM not write-protected
0 = Data EEPROM write-protected
WRTB: Boot Block Write Protection bit
1 = Boot block (000000-0007FFh) not write-protected
0 = Boot block (000000-0007FFh) write-protected
WRTC: Configuration Register Write Protection bit
1 = Configuration registers (300000-3000FFh) not write-protected
0 = Configuration registers (300000-3000FFh) write-protected
Unimplemented: Read as ‘0’
Legend:
R = Readable bit
-n = Value when device is unprogrammed
Legend:
R = Readable bit
- n = Value when device is unprogrammed
WRTD
Note 1: Unimplemented in PIC18F2420/4420 devices; maintain this bit set.
R/C-1
Note 1: This bit is read-only in normal execution mode; it can be written only in Program mode.
U-0
—
2: Unimplemented in PIC18F2425/4425 devices; maintain this bit set.
WRTB
R/C-1
U-0
—
PIC18F2420/2520/4420/4520
WRTC
C = Clearable bit
C = Clearable bit
(1,2)
(1)
R-1
Preliminary
U-0
—
(1)
U-0
U-0
—
—
WRT3
U = Unimplemented bit, read as ‘0’
u = Unchanged from programmed state
(1)
U = Unimplemented bit, read as ‘0’
u = Unchanged from programmed state
R/C-1
U-0
—
(1,2)
WRT2
R/C-1
U-0
—
(1)
WRT1
R/C-1
U-0
—
DS39631A-page 255
WRT0
R/C-1
U-0
—
bit 0
bit 0
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