M29DW128G70NF6E NUMONYX, M29DW128G70NF6E Datasheet - Page 37

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M29DW128G70NF6E

Manufacturer Part Number
M29DW128G70NF6E
Description
P7ED TSOP56 DUAL BANK
Manufacturer
NUMONYX
Datasheet
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M29DW128G
Note:
7.3.2
7.3.3
7.3.4
the extended block physically belongs to bank A. In extended block mode, Erase, Chip
Erase, Erase Suspend and Erase Resume commands are not allowed.
To exit from the extended memory block mode the Exit Extended Memory Block command
must be issued.
The extended memory block can be protected by setting the extended memory block
protection bit to ‘1’ (see
cannot be undone.
When the device is in the extended memory block mode, the V
fast programming and the unlock bypass mode is not available (see
protect
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 M29DW128G offers a set of commands to access the lock register and to configure
and verify its content. See the following sections in conjunction with
register
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
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 four
times at four consecutive addresses selected by A1-A0.
The password can be checked by issuing a Password Read command.
(VPP/WP)).
and
Section 7.3.8: Exit protection command set
Table 11: Block protection
Section 8.1: Lock
commands.
register); however once protected the protection
command).
PP
/WP pin cannot be used for
Section 8.1: Lock
Section 2.6: VPP/write
Command interface
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