MBM29DL16XTE70PFTN Meet Spansion Inc., MBM29DL16XTE70PFTN Datasheet - Page 38

• Manufacturer Part Number: MBM29DL16XTE70PFTN
• Description: Flash Memory Cmos 16m 2m ? 8/1m ? 16 Bit Dual Operation
• Manufacturer: Meet Spansion Inc.

38
MBM29DL16XTD/BD
• HiddenROM Protect Command
• Write Operation Status
There are two methods to protect the HiddenROM area. One is to write the sector group protect setup
command(60h), set the sector address in the HiddenROM area and (A
group protect command(60h) during the HiddenROM mode. The same command sequence could be used
because except that it is in the HiddenROM mode and that it does not apply high voltage to RESET pin, it is the
same as the extension sector group protect in the past. Please refer to “Function Explanation Extended
Command (3) Extended Sector Group Protection” for details of extention sector group protect setting.
The other is to apply high voltage (V
A
voltage (V
“1” appears to DQ
write pulse agian. The same command sequence could be used for the above method because other than the
HiddenROM mode, it is the same as the sector group protect in the past. Please refer to “Function Explanation
Sector Group Protection” for details of sector group protect setting
Other sector group will be effected if the address other than the HiddenROM area is selected for the sector group
address, so please be carefull. Once it is protected, protection can not be cancelled, so please pay closest
attention.
Detailed in “Hardware Sequence Flags Table” are all the status flags that can determine the status of the bank
for the current mode operation. The read operation from the bank where is not operate Embedded Algorithm
returns a data of memory cell. These bits offer a method for determining whether a Embedded Algorithm is
completed properly. The information on DQ
sector is consectively read, then the DQ
erasing sector is consectively read. This allows the user to determine which sectors are erasing and which are not.
The status flag is not output from bank (non-busy bank) not executing Embedded Algorithm. For example, there
is bank (busy bank) which is now executing Embedded Algorithm. When the read sequence is [1] <busy bank>,
[2] <non-busy bank>, [3] <busy bank>, the DQ
memory cell is outputted. In the erase-suspend read mode with the same read sequence, DQ
in the [1] and [3].
In the erase suspend read mode, DQ
outputted.
1
, A
0
) = (0,1,0), and apply the write pulse during the HiddenROM mode. To verify the protect circuit, apply high
ID
) to A
9
, specify (A
0
, the protect setting is completed. “0” will appear to DQ
6
, A
1
, A
0
ID
) = (0,1,0) and the sector address in the HiddenROM area, and read. When
Retired Product DS05-20874-8E_July 12, 2007
2
) to A
is toggled in the [1] and [3]. In case of [2], the data of memory cell is
2
bit will toggle. However, DQ
-70/90
2
9
is address sensitive. This means that if an address from an erasing
and OE, set the sector address in the HiddenROM area and (A
6
is toggling in the case of [1] and [3]. In case of [2], the data of
2
6
will not toggle if an address from a non-
, A
0
1
, A
if it is not protected. Please apply
0
) = (0,1,0), and write the sector
6
will not be toggled
6
,