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M29F800FB5AN6E2 View Datasheet(PDF) - Micron Technology

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M29F800FB5AN6E2
Micron
Micron Technology Micron
M29F800FB5AN6E2 Datasheet PDF : 55 Pages
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M29FxxxFT/B
Command Interface
ter for details on how to identify whether the program/erase controller has started the
BLOCK ERASE operation.
If any selected blocks are protected, then these are ignored and all the other selected
blocks are erased. If all of the selected blocks are protected, the BLOCK ERASE opera-
tion appears to start but will terminate within about 100µs, leaving the data unchanged.
No error condition is given when protected blocks are ignored.
During the BLOCK ERASE operation, the device will ignore all commands except the
ERASE SUSPEND command. All READ operations during the BLOCK ERASE operation
will output the status register on the data I/Os.
After the BLOCK ERASE operation has completed, the device will return to read mode,
unless an error has occurred. When an error occurs, the device will continue to output
the status register. A READ/RESET command must be issued to reset the error condi-
tion and return to read mode.
The BLOCK ERASE command sets all of the bits in the unprotected selected blocks to 1.
All previous data in the selected blocks is lost.
ERASE SUSPEND Command
The ERASE SUSPEND command may be used to temporarily suspend a BLOCK ERASE
operation and return the device to read mode. The command requires one WRITE oper-
ation.
The program/erase controller will suspend within the erase suspend latency time of the
ERASE SUSPEND command being issued. Once the program/erase controller has stop-
ped, the device will be set to read mode and the erase will be suspended. If the ERASE
SUSPEND command is issued during the period when the device is waiting for an addi-
tional block (before the program/erase controller starts), then the erase is suspended
immediately and will start immediately when the ERASE SUSPEND command is issued.
It is not possible to select any further blocks to erase after the erase resume.
During erase suspend, it is possible to read and program cells in blocks that are not be-
ing erased; both READ and PROGRAM operations behave as normal on these blocks. If
any attempt is made to program in a protected block or in the suspended block then the
PROGRAM command is ignored and the data remains unchanged. The status register is
not read and no error condition is given. Reading from blocks that are being erased will
output the status register.
It is also possible to issue the AUTO SELECT, READ CFI QUERY, and UNLOCK BYPASS
commands during an erase suspend. The READ/RESET command must be issued to re-
turn the device to read array mode before the RESUME command will be accepted.
ERASE RESUME Command
The ERASE RESUME command must be used to restart the program/erase controller
from erase suspend. An erase can be suspended and resumed more than once.
READ CFI QUERY Command
The READ CFI QUERY command reads data from the CFI. This command is valid when
the device is in read array mode, or when the device is in auto select mode. One WRITE
cycle is required to issue the READ CFI QUERY command. Once the command is issued,
subsequent READ operations then read from the CFI. The READ/RESET command
PDF: 09005aef845656da
m29fxxxf/t_2mb-16mb.pdf - Rev. B 2/14 EN
28
Micron Technology, Inc. reserves the right to change products or specifications without notice.
© 2013 Micron Technology, Inc. All rights reserved.
 

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