MBM29PL12LM Fujitsu Media Devices, MBM29PL12LM Datasheet - Page 31

• Manufacturer Part Number: MBM29PL12LM
• Description: FLASH MEMORY 128 M (16M x 8/8M x 16) BIT
• Manufacturer: Fujitsu Media Devices

Erase Suspend/Resume
Fast Mode Set/Reset
Fast Programming
The Erase Suspend command allows the user to interrupt Sector Erase operation and then perform read to a
sector not being erased. This command is applicable ONLY during the Sector Erase operation within the time-
out period for sector erase. Writting the Erase Suspend command (B0h) during the Sector Erase time-out results
in immediate termination of the time-out period and suspension of the erase operation.
Writing the "Erase Resume" command resumes the erase operation.
When the "Erase Suspend" command is written during the Sector Erase operation, the device takes maximum
of “t
pin will be at High-Z and the DQ
of the erasing sector for reading DQ
writes of the Erase Suspend command are ignored.
When the erase operation is suspended, the devices default 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. Reading successively from the erase-suspended sector while the device
is in the erase-suspend-read mode will cause DQ
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.
Do not issue program command after entering erase-suspend-read mode.
The device has Fast Mode function. It dispenses with the initial two unclock cycles required in the standard
program command sequence by writing Fast Mode command into the command register. In this mode, the
required bus cycle for programming consists of two cycles instead of 4 bus cycles in standard program command.
The read operation is also executed after exiting this mode. During the Fast mode, do not write any command
other than the Fast program/Fast mode reset command. To exit from this mode, write Fast Mode Reset command
into the command register. (Refer to the “Embedded Program
The V
During Fast Mode, the programming can be executed with 2 bus cycles operation. The Embedded Program
Algorithm is executed by writing program set-up command (A0h) and data write cycles (PA/PD). See “Embedded
Program
SPD
CC
” to suspend the erase operation. When the devices enter the erase-suspended mode, the RY/BY output
active current is required even CE = V
TM
Algorithm for Fast Mode” in ■FLOW CHART.
7
bit will be at logic “1” and DQ
6
and DQ
7
to determine if the erase operation has been suspended. Further
IH
during Fast Mode.
2
to toggle. See the section on DQ
6
TM
will stop toggling. The user must use the address
Algorithm for Fast Mode” in ■FLOW CHART.)
MBM29PL12LM
2
.
10
31