S29GL01GP datasheet(46/81 Pages) SPANSION

номер детали	S29GL01GP

подробное описание детали	1 Gigabit, 512 Megabit, 256 Megabit and 128 Megabit 3.0 Volt-only Page Mode Flash Memory featuring 90 nm MirrorBit Process Technology

PDF	81 Pages

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производитель	SPANSION [SPANSION]

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S29GL-P MirrorBit® Flash Family

S29GL-P_00_A14 October 22, 2012

Da ta

Sh e e t

5. There is no means to verify what the password is after it is set.

6. The Password Mode Lock Bit, once set, prevents reading the 64-bit password on the data bus and

further password programming.

7. The Password Mode Lock Bit is not erasable.

8. The lower two address bits (A1–A0) are valid during the Password Read, Password Program, and

Password Unlock.

9. The exact password must be entered in order for the unlocking function to occur.

10. The Password Unlock command cannot be issued any faster than 1 µs at a time to prevent a

hacker from running through all the 64-bit combinations in an attempt to correctly match a

password.

11. Approximately 1 µs is required for unlocking the device after the valid 64-bit password is given to

the device.

12. Password verification is only allowed during the password programming operation.

13. All further commands to the password region are disabled and all operations are ignored.

14. If the password is lost after setting the Password Mode Lock Bit, there is no way to clear the PPB

Lock Bit.

15. Entry command sequence must be issued prior to any of any operation and it disables reads and

writes for Sector 0. Reads and writes for other sectors excluding Sector 0 are allowed.

16. If the user attempts to program or erase a protected sector, the device ignores the command and

returns to read mode.

17. A program or erase command to a protected sector enables status polling and returns to read

mode without having modified the contents of the protected sector.

18. The programming of the DYB, PPB, and PPB Lock for a given sector can be verified by writing

individual status read commands DYB Status, PPB Status, and PPB Lock Status to the device.

S29GL01GP датащи(PDF) 46 Page - SPANSION