M29W128GL60N6E View Datasheet(PDF) - Numonyx -> Micron

Part Name

Description

Manufacturer

M29W128GL60N6E

128 Mbit (16 Mb x 8 or 8 Mbx 16, page, uniform block) 3 V supply Flash memory

Numonyx -> Micron 

M29W128GH, M29W128GL

Command interface

6.3.3

6.3.4

Lock Register command set

The M29W128GL and M29W128GH offer a set of commands to access the Lock Register

and to configure and verify its content. See the following sections in conjunction with

Section 7.1: Lock Register, Table 15 and Table 16.

Enter Lock Register Command Set command

Three Bus Write cycles are required to issue the Enter Lock Register Command Set

command. Once the command has been issued, all Bus Read or Program operations are

issued to the Lock Register.

Lock Register Program and Lock Register Read command

The Lock Register Program command allows to configure the Lock Register. The

programmed data can then be checked by issuing a Lock Register Read command.

An Exit Protection Command Set command must then be issued to return the device to

Read mode (see Section 6.3.8: Exit Protection command set).

Password Protection mode command set

Enter Password Protection Command Set command

Three Bus Write cycles are required to issue the Enter Password Protection Command Set

command. Once the command has been issued, the commands related to the Password

Protection mode can be issued to the device.

Password Program command

The Password Program command is used to program the 64-bit password used in the

Password Protection mode.

To program the 64-bit password, the complete command sequence must be entered eight

times at eight consecutive addresses selected by A1-A0 plus DQ15A-1 in 8-bit mode, or four

times at four consecutive addresses selected by A1-A0 in 16-bit mode.

The password can be checked by issuing a Password Read command.

Once Password Program operation has completed, an Exit Protection Command Set

command must be issued to return the device to Read mode. The Password Protection

mode can then be selected.

By default, all Password bits are set to ‘1’.

Password Read command

The Password Read command is used to verify the Password used in Password Protection

mode.

To verify the 64-bit password, the complete command sequence must be entered eight

times at eight consecutive addresses selected by A1-A0 plus DQ15A-1 in 8-bit mode, or four

times at four consecutive addresses selected by A1-A0 in 16-bit mode.

If the Password Mode Lock bit is programmed and the user attempts to read the password,

the device will output FFh onto the I/O data bus.

An Exit Protection Command Set command must be issued to return the device to Read

mode.

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