M25PE80-VMN6TP 查看數據表（PDF） - Numonyx -> Micron

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M25PE80-VMN6TP

8-Mbit, page-erasable serial flash memory with byte alterability, 75 MHz SPI bus, standard pinout

Numonyx -> Micron 

Operating features

M25PE80

Table 2. Software protection truth table (sectors 0 to 15, 64-Kbyte granularity)

Sector lock register

Lock

Write

down bit lock bit

Protection status

0

0 Sector unprotected from program/erase/write operations, protection status reversible

0

1 Sector protected from program/erase/write operations, protection status reversible

1

0

Sector unprotected from program/erase/write operations,

Sector protection status cannot be changed except by a reset or power-up.

Sector protected from program/erase/write operations,

1

1

Sector protection status cannot be changed except by a reset or power-up.

Table 3.

Not for new design: TY7 process only, software protection scheme truth

table (sectors 0 and 15)(1) (2) (3)

Sector lock Subsector lock

register

register

Lock Write Lock Write

down lock down lock

bit

bit

bit

bit

Protection status

0

0

Current subsector unprotected from program/erase/write operations,

Current subsector protection status reversible

Current subsector protected from program/erase/write operations,

0

1

Current subsector protection status reversible.

0

1

0

Current subsector unprotected from program/erase/write operations, current

subsector protection status cannot be changed except by a reset or power-up.

0

1

1

Current subsector protected from program/erase/write operations, Current

subsector protection status cannot be changed except by a reset or power-up.

0

1

All subsectors protected from program/erase/write operations, current subsector

protection status reversible

1

1

1

All subsectors protected from program/erase/write operations, current subsector

protection status cannot be changed except by a reset or power-up.

1

0

Current subsector unprotected from program/erase/write operations, all

subsectors protection status cannot be changed except by a reset or power-up

0

1

1

1

Current subsector protected from program/erase/write operations, all subsectors

protection status cannot be changed except by a reset or power-up

1

1

1

All subsectors protected with their protection status cannot be changed except by

a reset or power-up.

1. All other bit combinations are not-applicable.

2. For more details, refer to the description of the Write to lock register (WRLR) instruction.

3. See Important note on page 6 for differences between devices produced in T7Y and T9HX processes.

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