M29W128GL70N6E Micron Technology Inc, M29W128GL70N6E Datasheet - Page 42

• Manufacturer Part Number: M29W128GL70N6E
• Manufacturer: Micron Technology Inc

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

6.3.2
6.3.3
6.3.4
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Exit Extended Memory Block command
The Exit Extended Memory Block command is used to exit from the extended memory block
mode and return the device to read mode. Four bus write operations are required to issue
the command.
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
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 is used to configure the lock register. The
programmed data can then be checked by issuing a Lock Register Read command.
The Lock Register Program command is a special kind of Program command and must be
used according to all the Program command timings. The result from this command can be
verified by checking the status register.
An Exit Protection Command Set command must then be issued to return the device to read
mode (see
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. Any other command is ignored.
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
Program command is a special kind of Program command and must be used according to
all the Program command timings. The result from this command can be verified by
checking the status register.
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’.
Section 6.3.8: Exit Protection Command Set
register,
Table 15
and
Table
16.
command).