M29DW128G70NF6E NUMONYX, M29DW128G70NF6E Datasheet - Page 40

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M29DW128G70NF6E

Manufacturer Part Number
M29DW128G70NF6E
Description
P7ED TSOP56 DUAL BANK
Manufacturer
NUMONYX
Datasheet
Command interface
7.3.6
NVPB lock bit command set
Enter NVPB Lock Bit Command Set command
Three bus write cycles are required to issue the Enter NVPB Lock Bit Command Set
command. Once the command has been issued, the commands allowing to set the NVPB
lock bit can be issued to the device.
NVPB Lock Bit Program command
This command is used to set the NVPB Lock bit to ‘0’ thus locking the NVPBs, and
preventing them from being modified.
Read NVPB Lock Bit Status command
This command is used to read the status of the NVPB lock bit.
7.3.7
Volatile protection mode command set
Enter Volatile Protection Command Set command
Three bus write cycles are required to issue the Enter Volatile Protection Command Set
command. Once the command has been issued, the commands related to the volatile
protection mode can be issued to the device.
Volatile Protection Bit Program command (VPB Program)
The VPB Program command individually sets a VPB to ‘0’ for a given block.
If the NVPB for the same block is set, the block is locked regardless of the value of the VPB
bit (see
Table 14: Block protection
Read VPB Status command
The status of a VPB for a given block can be read by issuing a Read VPB Status command
along with the block address.
VPB Clear command
The VPB Clear command individually clears (sets to ‘1’) the VPB for a given block.
If the NVPB for the same block is set, the block is locked regardless of the value of the VPB
bit. (see
Table 14: Block protection
7.3.8
Exit protection command set command
The Exit Protection Command Set command is used to exit from the Lock register,
password protection, non-volatile protection, volatile protection, and NVPB lock bit
command set mode. It returns the device to read mode.
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status).
status).
M29DW128G

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