AT49LW040 datasheet(12/34 Pages) ATMEL

No de pièce	AT49LW040

Description	8-megabit and 4-megabit Firmware Hub Flash Memory

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Fabricant	ATMEL [ATMEL Corporation]

Site Internet	http://www.atmel.com

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AT49LW080/040

1966C–FLASH–03/02

If the state of TBL or WP changes during a program suspend or erase suspend state,

the changes to the device’s locking status do not take place immediately. The sus-

pended operation may be resumed to successfully complete the program or erase

operation. The new lock status will take place after the program or erase operation

completes.

These pins function in combination with the register-based sector locking (to be

explained later). These pins, when active, will write-protect the appropriate sector(s),

regardless of the associated sector locking registers. (For example, when TBL is active,

writing to the top sector is prevented, regardless of the state of the Write Lock bit for the

top sector’s locking register. In such a case, clearing the write-protect bit in the register

will have no functional effect, even though the register may indicate that the sector is no

longer locked. The register may still be set to read-lock the sector, if desired.)

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