M29W128GL70N6E Micron Technology Inc, M29W128GL70N6E Datasheet - Page 50

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M29W128GL70N6E

Manufacturer Part Number
M29W128GL70N6E
Description
Manufacturer
Micron Technology Inc
Datasheet

Specifications of M29W128GL70N6E

Cell Type
NOR
Density
128Mb
Access Time (max)
70ns
Interface Type
Parallel
Boot Type
Not Required
Address Bus
24/23Bit
Operating Supply Voltage (typ)
3/3.3V
Operating Temp Range
-40C to 85C
Package Type
TSOP
Sync/async
Asynchronous
Operating Temperature Classification
Industrial
Operating Supply Voltage (min)
2.7V
Operating Supply Voltage (max)
3.6V
Word Size
8/16Bit
Number Of Words
16M/8M
Supply Current
10mA
Mounting
Surface Mount
Pin Count
56
Lead Free Status / Rohs Status
Compliant

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7
7.1
7.1.1
7.1.2
7.1.3
7.1.4
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Registers
The device feature two registers:
Lock register
The lock register is a 16-bit one-time programmable register. The bits in the lock register are
summarized in
See
to read and program the lock register.
Password protection mode lock bit (DQ2)
The password protection mode lock bit, DQ2, is one-time programmable. Programming
(setting to ‘0’) this bit permanently places the device in password protection mode.
Any attempt to program the password protection mode lock bit when the non-volatile
protection mode bit is programmed causes the operation to abort and the device to return to
read mode.
Non-volatile protection mode lock bit (DQ1)
The non-volatile protection mode lock bit, DQ1, is one-time programmable. Programming
(setting to ‘0’) this bit permanently places the device in non-volatile protection mode.
When shipped from the factory, all parts default to operate in non-volatile protection mode.
The memory blocks can be either unprotected (NVPBs set to ‘1’) or protected (NVPBs set to
‘0’), according to the ordering option that has been chosen.
Any attempt to program the non-volatile protection mode lock bit when the password
protection mode bit is programmed causes the operation to abort and the device to return to
read mode.
Extended block protection bit (DQ0)
If the device has not been shipped with the extended memory block factory locked, 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.
The extended memory block protection status can be read in auto select mode either by
applying V
Table 10
DQ15 to DQ3 reserved
They are ‘don’t care’.
Section 6.3.3: Lock register command set
A lock register that allows to configure the memory blocks and extended memory block
protection (see
A status register that provides information on the current or previous program or erase
operations.
and
ID
to A9 (see
Table
Table 18: Lock register
11).
Table 19: Block protection
Table 8
and
Table
bits.
9) or by issuing an Auto Select command (see
for a description of the commands allowing
status)

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