PIC18F2221 MICROCHIP [Microchip Technology], PIC18F2221 Datasheet - Page 262

• Manufacturer Part Number: PIC18F2221
• Description: 28/40/44-Pin Enhanced Flash Microcontrollers with 10-Bit A/D and nanoWatt Technology
• Manufacturer: MICROCHIP [Microchip Technology]

PIC18F4321 FAMILY
REGISTER 23-8:
REGISTER 23-9:
DS39689E-page 260
bit 7-2
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’
WRT1: Write Protection bit
1 = Block 1 not write-protected
0 = Block 1 write-protected
WRT0: Write Protection bit
1 = Block 0 not write-protected
0 = Block 0 write-protected
Legend:
R = Readable bit
-n = Value when device is unprogrammed
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 not write-protected
0 = Boot block 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
WRTD
Note 1: See Figure 23-5 for variable block boundaries.
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: See Figure 23-5 for block boundaries.
WRTB
R/C-1
U-0
—
WRTC
C = Clearable bit
C = Clearable bit
(1)
(1)
R-1
Preliminary
U-0
—
(2)
(1)
(1)
(1)
(2)
U-0
—
U-0
—
U = Unimplemented bit, read as ‘0’
u = Unchanged from programmed state
U = Unimplemented bit, read as ‘0’
u = Unchanged from programmed state
(1)
U-0
—
U-0
—
U-0
U-0
—
© 2007 Microchip Technology Inc.
—
WRT1
R/C-1
U-0
—
WRT0
R/C-1
U-0
—
bit 0
bit 0