MBM29LV160T Fujitsu Media Devices, MBM29LV160T Datasheet - Page 21

• Manufacturer Part Number: MBM29LV160T
• Description: 16M (2M x 8/1M x 16) BIT
• Manufacturer: Fujitsu Media Devices

Extended Command
be programmed to sectors that are not erase-suspended. Successively reading from the erase-suspended sector
while the devices are in the erase-suspend-program mode will cause DQ
suspended Program operation is detected by the RY/BY output pin, Data polling of DQ
which is the same as the regular Program operation. Note that DQ
while 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.
(1) Fast Mode
(2) Fast Programming
(3) CFI (Common Flash Memory Interface)
(4) Extended Sector Protect
MBM29LV160T/B has Fast Mode function. This mode dispenses with the initial two unlock cycles required
in the standard program command sequence writing Fast Mode command into the command register. In this
mode, the required bus cycle for programming is two cycles instead of four bus cycles in standard program
command. (Do not write erase command in this mode.) The read operation is also executed after exiting this
mode. To exit this mode, it is necessary to write Fast Mode Reset command into the command register.
(Refer to the Figure 26 Extended algorithm.) The V
Mode.
During Fast Mode, the programming can be executed with two bus cycles operation. The Embedded Program
Algorithm is executed by writing program set-up command (A0H) and data write cycles (PA/PD). (Refer to
the Figure 26 Extended algorithm.)
The CFI (Common Flash Memory Interface) specification outlines device and host system software
interrogation handshake which allows specific vendor-specified software algorithms to be used for entire
families of devices. This allows device-independent, JEDEC ID-independent, and forward-and backward-
compatible software support for the specified flash device families. Refer to CFI specification in detail.
The operation is initiated by writing the query command (98H) into the command register. Following the
command write, a read cycle from specific address retrives device information. Please note that output data
of upper byte (DQ
operation, it is necessary to write the read/reset command sequence into the register.
In addition to normal sector protection, the MBM29LV160T/B has Extended Sector Protection as extended
function. This function enable to protect sector by forcing V
Unlike conventional procedure, it is not necessary to force V
RESET pin requires V
pin. With this condition, the operation is initiated by writing the set-up command (60H) into the command
register. Then, the sector addresses pins (A
should be set to the sector to be protected (recommend to set V
extended sector protect command (60H). A sector is typically protected in 150 s. To verify programming of
the protection circuitry, the sector addresses pins (A
(0, 1, 0) should be set and write a command (40H). Following the command write, a logical “1” at device
output DQ
repeat to write extended sector protect command (60H) again. To terminate the operation, it is necessary
to set RESET pin to V
MBM29LV160T
6
can be read from any address.
0
will produce for protected sector in the read operation. If the output data is logical “0”, please
8
to DQ
ID
IH
for sector protection in this mode. The extended sector protect requires V
.
15
) is “0” in word mode (16 bit) read. Refer to the CFI code table. To terminate
-80/-90/-12
19
, A
18
, A
CC
19
17
, A
active current is required even CE = V
, A
/MBM29LV160B
18
16
ID
, A
, A
on RESET pin and write a commnad sequence.
ID
17
15
, A
and control timing for control pins. The only
, A
7
must be read from the Program address
IL
16
14
for the other addresses pins), and write
, A
, A
15
2
13
to toggle. The end of the erase-
, A
and A
14
, A
12
13
) and (A
and A
7
, or the Toggle Bit (DQ
12
6
) and (A
, A
-80/-90/-12
1
, A
IH
during Fast
ID
0
) = (0, 1, 0)
6
on RESET
, A
1
, A
0
) =
6
)
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