M29DW128G70NF6E

Manufacturer Part NumberM29DW128G70NF6E
DescriptionP7ED TSOP56 DUAL BANK
ManufacturerNUMONYX
M29DW128G70NF6E datasheet
 
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Page 24/85

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Command interface
7
Command interface
All bus write operations to the memory are interpreted by the command interface.
Commands consist of one or more sequential bus write operations. Failure to observe a
valid sequence of bus write operations will result in the memory returning to read mode. The
long command sequences are imposed to maximize data security.
7.1
Standard commands
See
Table 8: Standard commands
7.1.1
Read/Reset command
The device is in read mode after reset or after power-up.
The Read/Reset command returns the memory to read mode. It also resets the errors in the
status register. Either one or three bus write operations can be used to issue the
Read/Reset command.
The Read/Reset command can be issued, between bus write cycles before the start of a
program or erase operation, to return the device to read mode. If the Read/Reset command
is issued during the timeout of a block erase operation, the memory will take up to 10 µs to
abort. During the abort period no valid data can be read from the memory.
The Read/Reset command will not abort an erase operation when issued while in erase
suspend.
7.1.2
Auto Select command
The Auto Select command puts the device in auto select mode (see
mode). When in auto select mode, the system can read the manufacturer code, the device
code, the protection status of each block (block protection status) and the extended memory
block protection indicator.
Three consecutive bus write operations are required to issue the Auto Select command.
Once the Auto Select command is issued bus read operations to specific addresses output
the manufacturer code, the device code, the extended memory block protection indicator
and a block protection status (see
Read electronic
signature, and
select mode until a Read/Reset or CFI Query command is issued.
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for a summary of the standard commands.
Table 8: Standard commands
Table 6: Block
protection). The memory remains in auto
M29DW128G
Section 4: Auto select
in conjunction with
Table 5: