M29W128GH70N3E datasheet(89/94 Pages) NUMONYX

Part #	M29W128GH70N3E

Description	128-Mbit (16 Mbit x8 or 8 Mbit x16, page, uniform block) 3 V supply flash memory

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Manufacturer	NUMONYX [Numonyx B.V]

Direct Link	http://www.numonyx.com

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89 / 94 page

M29W128GH, M29W128GL

Extended memory block

89/94

C.2

Customer lockable extended memory block

A device where the extended memory block is customer lockable is delivered with the DQ7

bit set to ‘0’ and the extended memory block unprotected. It is up to the customer to

program and protect the extended memory block but care must be taken because the

protection of the extended memory block is not reversible.

If the device has not been shipped with the extended memory block factory protected, the

block can be protected by setting the extended memory block protection bit, DQ0, to ‘0’.

However, this bit is one-time programmable and once protected the extended memory block

cannot be unprotected.

Once the extended memory block is programmed, the Exit Extended Memory Block

command must be issued to exit the extended memory block mode and return the device to

read mode.

Table 42.

Extended memory block address and data

Address(1)

1.

See Table 35: Block addresses.

Data

x8

x16

Factory locked

Customer lockable

000000h-0000FFh

000000h-00007Fh

Security identification number

Determined by customer

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