PIC18F4520ESLASHMLQTP datasheet(257/390 Pages) MICROCHIP

257 / 390 page

 2004 Microchip Technology Inc.

Preliminary

DS39631A-page 255

PIC18F2420/2520/4420/4520

CONFIG6L: CONFIGURATION REGISTER 6 LOW (BYTE ADDRESS 30000Ah)

CONFIG6H: CONFIGURATION REGISTER 6 HIGH (BYTE ADDRESS 30000Bh)

U-0

R/C-1

—

—WRT3(1,2)

WRT2(1)

WRT1

WRT0

bit 7

bit 0

bit 7-4

Unimplemented: Read as ‘0’

bit 3

WRT3: Write Protection bit(1,2)

= Block 3 (006000-007FFFh) not write-protected

= Block 3 (006000-007FFFh) write-protected

bit 2

WRT2: Write Protection bit(1)

= Block 2 (004000-005FFFh) not write-protected

= Block 2 (004000-005FFFh) write-protected

bit 1

WRT1: Write Protection bit

= Block 1 (002000-003FFFh) not write-protected

= Block 1 (002000-003FFFh) write-protected

bit 0

WRT0: Write Protection bit

= Block 0 (000800-001FFFh) not write-protected

= Block 0 (000800-001FFFh) write-protected

Note 1: Unimplemented in PIC18F2420/4420 devices; maintain this bit set.

2: Unimplemented in PIC18F2425/4425 devices; maintain this bit set.

Legend:

R = Readable bit

C = Clearable bit

U = Unimplemented bit, read as ‘0’

-n = Value when device is unprogrammed

u = Unchanged from programmed state

R/C-1

R-1

U-0

WRTD

WRTB

WRTC(1)

—

bit 7

bit 0

bit 7

WRTD: Data EEPROM Write Protection bit

= Data EEPROM not write-protected

= Data EEPROM write-protected

bit 6

WRTB: Boot Block Write Protection bit

= Boot block (000000-0007FFh) not write-protected

= Boot block (000000-0007FFh) write-protected

bit 5

WRTC: Configuration Register Write Protection bit(1)

= Configuration registers (300000-3000FFh) not write-protected

= Configuration registers (300000-3000FFh) write-protected

Note 1: This bit is read-only in normal execution mode; it can be written only in Program mode.

bit 4-0

Unimplemented: Read as ‘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

PIC18F4520E/MLQTP Datasheet(PDF) 257 Page - Microchip Technology

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