15

AT49LW080/040

1966C–FLASH–03/02

Table 8. Sector-locking Registers for AT49LW080

Register Name

Sector Size

Register Memory Address

Default Value

Type

LR0

64K

FFB00002H

01H

R/W

LR1

64K

FFB10002H

01H

R/W

LR2

64K

FFB20002H

01H

R/W

LR3

64K

FFB30002H

01H

R/W

LR4

64K

FFB40002H

01H

R/W

LR5

64K

FFB50002H

01H

R/W

LR6

64K

FFB60002H

01H

R/W

LR7

64K

FFB70002H

01H

R/W

LR8

64K

FFB80002H

01H

R/W

LR9

64K

FFB90002H

01H

R/W

LR10

64K

FFBA0002H

01H

R/W

LR11

64K

FFBB0002H

01H

R/W

LR12

64K

FFBC0002H

01H

R/W

LR13

64K

FFBD0002H

01H

R/W

LR14

64K

FFBE0002H

01H

R/W

LR15

64K

FFBF0002H

01H

R/W

FGPI-REG

FFBC0100H

N/A

RO

Table 9. Function of Sector-locking Bits

Bit

Function

7:3

Reserved

2

Read Lock

1 = Prevents read operations in the sector where set.

0 = Normal operation for reads in the sector where clear. This is the default state.

1

Lock-down

1 = Prevents further set or clear operations to the Write Lock and Read Lock bits. Lock-down can only be set, but

not cleared. The sector will remain locked-down until reset (with RST or INIT), or until the device is power-cycled.

0 = Normal operation for Write Lock and Read Lock bits altering in the sector where clear. This is the default state.

0

Write Lock

1 = Prevents program or erase operations in the sector where set. This is the default state.

0 = Normal operation for programming and erase in the sector where clear.