M29DW128G70NF6E NUMONYX, M29DW128G70NF6E Datasheet - Page 79

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M29DW128G70NF6E

Manufacturer Part Number
M29DW128G70NF6E
Description
P7ED TSOP56 DUAL BANK
Manufacturer
NUMONYX
Datasheet
M29DW128G
C.2
The device is delivered with the second section of the extended memory block ‘customer lockable’: bits
DQ7 and DQ6 are set to '1' and '0' respectively. It is up to the customer to program and protect this
section of the extended memory block but care must be taken because the protection is not reversible.
This section can be protected by setting the extended memory block protection bit, DQ0, to ‘0’.
Bit DQ6 of the extended block protection indicator is automatically set to '1' to indicate that the second
section of the extended memory block is customer locked.
Once the extended memory block is programmed and protected, the Exit Extended Block command must
be issued to exit the extended block mode and return the device to read mode.
Table 38.
1. See
2. ESN = electronic serial number.
M29DW128G
Device
Table 31: Block
Customer lockable section of extended memory block
Extended memory block address and data
addresses.
000080h-0000FFh
000000h-00007Fh
Address
(1)
security identification number
Random number, ESN
Factory locked
Unavailable
(2)
Data
,
Extended memory block
Determined by customer
Customer lockable
Unavailable
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