PIC18F4321 Datasheet, PDF (262/396 Pages) Microchip Technology – 28/40/44-Pin Enhanced Flash Microcontrollers with 10-Bit A/D and nanoWatt Technology

PIC18F4321 FAMILY
REGISTER 23-8:
CONFIG6L: CONFIGURATION REGISTER 6 LOW (BYTE ADDRESS 30000Ah)
U-0
U-0
U-0
U-0
U-0
U-0
R/C-1
R/C-1
—
—
—
—
—
—
WRT1 WRT0
bit 7
bit 0
bit 7-2
bit 1
bit 0
Unimplemented: Read as ‘0’
WRT1: Write Protection bit
1 = Block 1 not write-protected⁽¹⁾
0 = Block 1 write-protected⁽¹⁾
WRT0: Write Protection bit
1 = Block 0 not write-protected⁽¹⁾
0 = Block 0 write-protected⁽¹⁾
Note 1: See Figure 23-5 for variable block boundaries.
Legend:
R = Readable bit
C = Clearable bit
-n = Value when device is unprogrammed
U = Unimplemented bit, read as ‘0’
u = Unchanged from programmed state
REGISTER 23-9:
CONFIG6H: CONFIGURATION REGISTER 6 HIGH (BYTE ADDRESS 30000Bh)
R/C-1
R/C-1
R-1
U-0
U-0
U-0
U-0
U-0
WRTD WRTB WRTC⁽¹⁾
—
—
—
—
—
bit 7
bit 0
bit 7
bit 6
bit 5
bit 4-0
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⁽²⁾
0 = Boot block write-protected⁽²⁾
WRTC: Configuration Register Write Protection bit⁽¹⁾
1 = Configuration registers (300000-3000FFh) not write-protected
0 = Configuration registers (300000-3000FFh) write-protected
Unimplemented: Read as ‘0’
Note 1: This bit is read-only in normal execution mode; it can be written only in Program mode.
2: See Figure 23-5 for block boundaries.
Legend:
R = Readable bit
C = Clearable bit
-n = Value when device is unprogrammed
U = Unimplemented bit, read as ‘0’
u = Unchanged from programmed state
DS39689E-page 260
Preliminary
© 2007 Microchip Technology Inc.