MBM29DL324TD Fujitsu Media Devices, MBM29DL324TD Datasheet - Page 64

• Manufacturer Part Number: MBM29DL324TD
• Description: (MBM29DL32xBD) 32M (4M X 8/2M X 16) BIT Dual Operation
• Manufacturer: Fujitsu Media Devices

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64
MBM29DL32XTD/BD
• Extended Command
(1) Fast Mode
(2) Fast Programming
(3) Extended Sector Group Protection
(4) CFI (Common Flash Memory Interface)
MBM29DL32XTD/BD has Fast Mode function. This mode 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 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. The first cycle must contain the bank address. (Refer to the Figure 28.) The V
required even CE = V
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 28.)
In addition to normal sector group protection, the MBM29DL32XTD/BD has Extended Sector Group
Protection as extended function. This function enable to protect sector group by forcing V
and write a command sequence. Unlike conventional procedure, it is not necessary to force V
timing for control pins. The only RESET pin requires V
sector group protection requires V
the set-up command (60H) into the command register. Then, the sector group addresses pins (A
A
(recommend to set V
(60H). A sector group is typically protected in 250 s. To verify programming of the protection circuitry, the
sector group addresses pins (A
be set and write a command (40H). Following the command write, a logical “1” at device output DQ
produce for protected sector in the read operation. If the output data is logical “0”, please repeat to write
extended sector group protection command (60H) again. To terminate the operation, it is necessary to set
RESET pin to V
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. The bank address
should be set when writing this command. Then the device information can be read from the bank, and an
actual data of memory cell be read from the another bank. Following the command write, a read cycle from
specific address retrives device information. Please note that output data of upper byte (DQ
in word mode (16 bit) read. Refer to the CFI code table. To terminate operation, it is necessary to write the
read/reset command sequence into the register. (See Table 15.)
17
, A
16
, A
15
, A
14
, A
IH
. (Refer to the Figures 20 and 29.)
13
and A
IL
IH
for the other addresses pins), and write extended sector group protection command
during Fast Mode.
12
) and (A
20
, A
ID
19
on RESET pin. With this condition, the operation is initiated by writing
6
-80/90/12
, A
, A
1
18
, A
, A
0
) = (0, 1, 0) should be set to the sector group to be protected
17
, A
16
, A
ID
15
for sector group protection in this mode. The extended
, A
14
, A
13
and A
12
) and (A
6
, A
1
, A
0
CC
) = (0, 1, 0) should
active current is
ID
8
on RESET pin
to DQ
ID
and control
20
, A
15
0
19
) is “0”
will
, A
18
,