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參數(shù)資料
| 型號： | MBM29F400BC-90 |
| 廠商： | Fujitsu Limited |
| 英文描述： | Replaced by TPS2043B : 0.7A, 2.7-5.5V Triple (2In/3Out) Hi-Side MOSFET, Fault Report, Act-Low Enable 16-SOIC 0 to 85 |
| 中文描述： | 4分（為512k × 8/256K × 16）位 |
| 文件頁數(shù)： | 19/47頁 |
| 文件大小： | 542K |
| 代理商： | MBM29F400BC-90 |
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19
MBM29F400TC
-55/-70/-90
/MBM29F400BC
-55/-70/-90
condition. The CE circuit will partially power down the device under these conditions (to approximately 2 mA).
The OE and WE pins will control the output disable functions as described in Tables 2 and 3.
The DQ
5
failure condition may also appear if a user tries to program a non blank location without erasing. In this
case the device locks out and never complete the Embedded Algorithm operation. Hence, the system never
reads a valid data on DQ
7
bit and DQ
6
never stops toggling. Once the device has exceeded timing limits, the
DQ
5
bit will indicate a “1.” Please note that this is not a device failure condition since the device was incorrectly
used.
DQ
3
Sector Erase Timer
After the completion of the initial sector erase command sequence the sector erase time-out will begin. DQ
3
will
remain low until the time-out is complete. Data Polling and Toggle Bit are valid after the initial sector erase
command sequence.
If Data Polling or the Toggle Bit I indicates the device has been written with a valid erase command, DQ
3
may
be used to determine if the sector erase timer window is still open. If DQ
3
is high (“1”) the internally controlled
erase cycle has begun; attempts to write subsequent commands to the device will be ignored until the erase
operation is completed as indicated by Data Polling or Toggle Bit I. If DQ
3
is low (“0”), the device will accept
additional sector erase commands. To insure the command has been accepted, the system software should
check the status of DQ
3
prior to and following each subsequent sector erase command. If DQ
3
were high on the
second status check, the command may not have been accepted.
Refer to Table 8: Hardware Sequence Flags.
DQ
2
Toggle Bit II
This toggle bit II, along with DQ
6
, can be used to determine whether the device is in the Embedded Erase
Algorithm or in Erase Suspend.
Successive reads from the erasing sector will cause DQ
2
to toggle during the Embedded Erase Algorithm. If the
device is in the erase-suspended-read mode, successive reads from the erase-suspended sector will cause DQ
2
to toggle. When the device is in the erase-suspended-program mode, successive reads from the byte address
of the non-erase suspended sector will indicate a logic “1” at the DQ
2
bit.
DQ
6
is different from DQ
2
in that DQ
6
toggles only when the standard program or Erase, or Erase Suspend
Program operation is in progress. The behavior of these two status bits, along with that of DQ
7
, is summarized
as follows:
Notes:
1. These status flags apply when outputs are read from a sector that has been erase-suspended.
2. These status flags apply when outputs are read from the byte address of the non-erase suspended sector.
For example, DQ
2
and DQ
6
can be used together to determine the erase-suspend-read mode (DQ
2
toggles while
DQ
6
does not). See also Table 8 and Figure 22.
Mode
DQ
7
DQ
6
DQ
2
Program
DQ
7
toggles
1
Erase
0
toggles
toggles
Erase Suspend Read
(Erase-Suspended Sector)
(Note 1)
1
1
toggles
Erase Suspend Program
DQ
7
(Note 2)
toggles
1 (Note 2)
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MBM29F400BC-90PF | Current-Limited, Power-Distribution Switches 16-SOIC -40 to 85 |
| MBM29F400BC-90PFTN | Current-Limited, Power-Distribution Switches 16-SOIC -40 to 85 |
| MBM29F400BC-90PFTR | Current-Limited, Power-Distribution Switches 16-SOIC -40 to 85 |
| MBM29F400TC | Current-Limited, Power-Distribution Switches 16-SOIC -40 to 85 |
| MBM29F400TC-55 | Replaced by TPS2044B : 0.7A, 2.7-5.5V Quad (2In/4Out) Hi-Side MOSFET, Fault Report, Act-Low Enable 16-SOIC -40 to 85 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MBM29F400BC-90PF | 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:4M (512K X 8/256K X 16) BIT |
| MBM29F400BC-90PFTN | 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:4M (512K X 8/256K X 16) BIT |
| MBM29F400BC-90PFTN-SFL(E1) | 制造商:Spansion 功能描述: |
| MBM29F400BC-90PFTN-SFLE1 | 制造商:Spansion 功能描述:IC 5V 4M FLASH |
| MBM29F400BC-90PFTR | 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:4M (512K X 8/256K X 16) BIT |
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