MBM29F016A-12 FUJITSU [Fujitsu Component Limited.], MBM29F016A-12 Datasheet - Page 15

• Manufacturer Part Number: MBM29F016A-12
• Description: 16M (2M X 8) BIT
• Manufacturer: FUJITSU [Fujitsu Component Limited.]

MBM29F016A
-70/-90/-12
the Sector Erase time-out results in immediate termination of the time-out period and suspension of the erase
operation.
Any other command written during the Erase Suspend mode will be ignored except the Erase Resume command.
Writing the Erase Resume command resumes the erase operation. The addresses are DON’T CARES when
writing the Erase Suspend or Erase Resume command.
When the Erase Suspend command is written during the Sector Erase operation, the device will take a maximum
of 15 s to suspend the erase operation. When the device has entered the erase-suspended mode, the RY/BY
output pin and the DQ
bit will be at logic “1”, and DQ
will stop toggling. The user must use the address of the
7
6
erasing sector for reading DQ
and DQ
to determine if the erase operation has been suspended. Further writes
6
7
of the Erase Suspend command are ignored.
When the erase operation has been suspended, the device defaults to the erase-suspend-read mode. Reading
data in this mode is the same as reading from the standard read mode except that the data must be read from
sectors that have not been erase-suspended. Successively reading from the erase-suspended sector while the
device is in the erase-suspend-read mode will cause DQ
to toggle. (See the section on DQ
.)
2
2
After entering the erase-suspend-read mode, the user can program the device by writing the appropriate
command sequence for Byte Program. This program mode is known as the erase-suspend-program mode.
Again, programming in this mode is the same as programming in the regular Byte Program mode except that
the data must be programmed to sectors that are not erase-suspended. Successively reading from the erase-
suspended sector while the device is in the erase-suspend-program mode will cause DQ
to toggle. The end of
2
the erase-suspended program operation is detected by the RY/BY output pin, Data polling of DQ
, or by the
7
Toggle Bit I (DQ
) which is the same as the regular Byte Program operation. Note that DQ
must be read from
6
7
the Byte Program address while DQ
can be read from any address.
6
To resume the operation of Sector Erase, the Resume command (30H) should be written. Any further writes of
the Resume command at this point will be ignored. Another Erase Suspend command can be written after the
chip has resumed erasing.
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