PIC18LF4331 datasheet(271/392 Pages) MICROCHIP

271 / 392 page

 2010 Microchip Technology Inc.

DS39616D-page 271

PIC18F2331/2431/4331/4431

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

U-0

R/P-1

—

—WRT3(1,2)

WRT2(1,2)

WRT1(2)

WRT0(2)

bit 7

bit 0

Legend:

R = Readable bit

P = Programmable bit

U = Unimplemented bit, read as ‘0’

-n = Value when device is unprogrammed

U = Unchanged from programmed state

bit 7-4

Unimplemented:

Read as ‘0’

bit 3

WRT3:

Write Protection bit(1,2)

= Block 3 is not write-protected

= Block 3 is write-protected

bit 2

WRT2:

Write Protection bit(1,2)

= Block 2 is not write-protected

= Block 2 is write-protected

bit 1

WRT1:

Write Protection bit(2)

= Block 1 is not write-protected

= Block 1 is write-protected

bit 0

WRT0:

Write Protection bit(2)

= Block 0 is not write-protected

= Block 0 is write-protected

Note 1:

Unimplemented in PIC18F2331/4331 devices; maintain this bit set.

Refer to Figure 23-5 for block boundary addresses.

R/P-1

R-1

U-0

WRTD(2)

WRTB(2)

WRTC(1,2)

—

bit 7

bit 0

Legend:

R = Readable bit

P = Programmable bit

U = Unimplemented bit, read as ‘0’

-n = Value when device is unprogrammed

U = Unchanged from programmed state

bit 7

WRTD:

Data EEPROM Write Protection bit(2)

= Data EEPROM is not write-protected

= Data EEPROM is write-protected

bit 6

WRTB:

Boot Block Write Protection bit(2)

= Boot block is not write-protected

= Boot block is write-protected

bit 5

WRTC:

Configuration Register Write Protection bit(1,2)

= Configuration registers are not write-protected

= Configuration registers are write-protected

bit 4-0

Unimplemented:

Read as ‘0’

Note 1:

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

Refer to Figure 23-5 for block boundary addresses.

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