參數(shù)資料
型號： MBM29DL32TF70TN
廠商： FUJITSU LTD
元件分類： PROM
英文描述： 2M X 16 FLASH 3V PROM, 70 ns, PDSO48
封裝： PLASTIC, TSOP1-48
文件頁數(shù)： 29/70頁
文件大?。?/td> 862K
代理商： MBM29DL32TF70TN
MBM29DL32TF/BF-70
35
mode and does not apply high voltage to the RESET pin. Please refer to “7. Extended Command (3) Extended
Sector Group Protection” for details of extension sector group protect setting.
The other method is to apply high voltage (VID) to A9 and OE, set the sector address in the HiddenROM area
and (A6, A3, A2, A1, A0)
= (0, 0, 0, 1, 0) , and apply the write pulse during the HiddenROM mode. To verify the
protect circuit, apply high voltage (VID) to A9, specify (A6, A3, A2, A1, A0)
= (0, 0, 0, 1, 0) and the sector address
in the HiddenROM area, and read. When “1” appears on DQ0, the protect setting is completed. “0” will appear
on DQ0 if it is not protected. Apply write pulse again. 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 previously men-
tioned. Refer to “8. Secor Group Protection” in sFUNCTIONAL DESCRIPTION for details of the sector group
protect setting.
Take note that other sector groups will be affected if an address other than those for the HiddenROM area is
selected for the sector group address, so please be careful. Pay close attention that once it is protected, protection
CANNOT BE CANCELLED.
13. Write Operation Status
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 that does 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 DQ2 is address sensitive. This means that if an address from an erasing
sector is consecutively read, then the DQ2 bit will toggle. However, DQ2 will not toggle if an address from a non-
erasing sector is consecutively 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 DQ6 is toggling in the case of [1] and [3]. In case of [2], the data of
memory cell is outputted. In the erase-suspend read mode with the same read sequence, DQ6 will not be toggled
in the [1] and [3].
In the erase suspend read mode, DQ2 is toggled in the [1] and [3]. In case of [2], the data of memory cell is
outputted.
Hardware Sequence Flags Table
Status
DQ7
DQ6
DQ5
DQ3
DQ2
In Progress
Embedded Program Algorithm
DQ7
Toggle
0
1
Embedded Erase Algorithm
0
Toggle
0
1
Toggle *1
Erase
Suspended
Mode
Erase Suspend Read
(Erase Suspended Sector)
1
0
Toggle
Erase Suspend Read
(Non-Erase Suspended Sector)
Data
Erase Suspend Program
(Non-Erase Suspended Sector)
DQ7
Toggle
0
1 *2
Program
Suspended
Mode
Program Suspend Read
(Program Suspended Sector)
Data
Program Suspend Read
(Non-Program Suspended Sector)
Data
Exceeded
Time Limits
Embedded Program Algorithm
DQ7
Toggle
1
0
1
Embedded Erase Algorithm
0
Toggle
1
N/A
Erase
Suspended
Mode
Erase Suspend Program
(Non-Erase Suspended Sector)
DQ7
Toggle
1
0
N/A
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