Microchip Technology MCP3421DM-WS Fiche De Données

PIC18F2455/2550/4455/4550

DS39632E-page 300

REGISTER 25-9:

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

U-0

R/C-1

—

WRT3

(1)

WRT2

WRT1

WRT0

bit 7

bit 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

bit 7-4

Unimplemented: Read as ‘0’

bit 3

WRT3: Write Protection bit

(1)

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

bit 2

WRT2: Write Protection bit
1 = Block 2 (004000-005FFFh) is not write-protected
0 = Block 2 (004000-005FFFh) is write-protected

bit 1

WRT1: Write Protection bit
1 = Block 1 (002000-003FFFh) is not write-protected
0 = Block 1 (002000-003FFFh) is write-protected

bit 0

WRT0: Write Protection bit
1 = Block 0 (000800-001FFFh) or (001000-001FFFh) is not write-protected
0 = Block 0 (000800-001FFFh) or (001000-001FFFh) is write-protected

Note 1:

Unimplemented in PIC18FX455 devices; maintain this bit set.

REGISTER 25-10: CONFIG6H: CONFIGURATION REGISTER 6 HIGH (BYTE ADDRESS 30000Bh)

R/C-1

R-1

U-0

WRTD

WRTB

WRTC

(1)

—

bit 7

bit 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

bit 7

WRTD: Data EEPROM Write Protection bit
1 = Data EEPROM is not write-protected
0 = Data EEPROM is write-protected

bit 6

WRTB: Boot Block Write Protection bit
1 = Boot block (000000-0007FFh) is not write-protected
0 = Boot block (000000-0007FFh) is write-protected

bit 5

WRTC: Configuration Register Write Protection bit

(1)

1 = Configuration registers (300000-3000FFh) are not write-protected
0 = Configuration registers (300000-3000FFh) 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.