AT25SL321 datasheet(12/82 Pages) DIALOG

부품명	AT25SL321

상세설명	32-Mbit, 1.7 V Minimum SPI Serial Flash Memory with Dual I/O, Quad I/O and QPI Support

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AT25SL321

DS-25SL321–112H–2020-10

Write Protection

To protect inadvertent writes by the possible noise, several means of protection are applied to the Flash memory.

6.1

Write Protect Features

• While Power-on reset, all operations are disabled and no instruction is recognized.

• An internal time delay of tPUW can protect the data against inadvertent changes while the power supply is

outside the operating specification. This includes the Write Enable, Page program, Block Erase, Chip Erase, Write

Security Register and the Write Status Register instructions.

• For data changes, Write Enable instruction must be issued to set the Write Enable Latch (WEL) bit to “0”.

Power-up, Completion of Write Disable, Write Status Register, Page program, Block Erase and Chip Erase are

subjected to this condition.

•Write Protect (WP) pin can control to change the Status Register under hardware control.

• The Deep Power Down mode provides extra protection from unexpected data changes as all instructions are

ignored under this status except for Release Deep Power Down instruction.

AT25SL321 데이터시트(PDF) 12 Page - Dialog Semiconductor