M25PE80-VMP6TP datasheet(16/61 Pages) STMICROELECTRONICS

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Operating features

M25PE80

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Table 2.

Software protection truth table (Sectors 0 to 15, 64-Kbyte granularity)

Sector Lock Register

Protection Status

Lock

Down Bit

Write

Lock Bit

Sector Unprotected from Program/Erase/Write operations, Protection Status Reversible

Sector Protected from Program/Erase/Write operations, Protection Status Reversible

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,

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

Protection Status

Lock

Down

Bit

Write

Lock

Bit

Lock

Down

Bit

Write

Lock

Bit

Current subsector Unprotected from Program/Erase/Write operations,

Current subsector Protection Status Reversible

Current subsector Protected from Program/Erase/Write operations,

Current subsector Protection Status Reversible.

Current subsector Unprotected from Program/Erase/Write operations, Current

subsector Protection Status cannot be changed except by a Reset or Power-up.

Current subsector Protected from Program/Erase/Write operations, Current

subsector Protection Status cannot be changed except by a Reset or Power-up.

All subsectors Protected from Program/Erase/Write operations, Current

subsector Protection Status Reversible

All subsectors Protected from Program/Erase/Write operations, Current

subsector Protection Status cannot be changed except by a Reset or Power-up.

Current subsector Unprotected from Program/Erase/Write operations, All

subsectors Protection Status cannot be changed except by a Reset or Power-up

Current subsector Protected from Program/Erase/Write operations, All

subsectors Protection Status cannot be changed except by a Reset or Power-up

111

All subsectors Protected with their Protection Status cannot be changed except

by a Reset or Power-up.

All other bit combinations are not-applicable.

For more details, refer to the description of the Write to Lock Register (WRLR) instruction.

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

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