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參數(shù)資料
| 型號： | AM29LV640MT100PCF |
| 廠商： | Advanced Micro Devices, Inc. |
| 英文描述： | 64 Megabit (4 M x 16-Bit/8 M x 8-Bit) MirrorBit⑩ 3.0 Volt-only Boot Sector Flash Memory |
| 中文描述： | 64兆位（4個M x 16位/八米× 8位）的MirrorBit⑩3.0伏，只引導扇區(qū)閃存 |
| 文件頁數(shù)： | 37/66頁 |
| 文件大?。?/td> | 836K |
| 代理商： | AM29LV640MT100PCF |
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February1,2007 26190C8
Am29LV640MT/B
35
D A T A S H E E T
Erase Suspend/Erase Resume
Commands
The Erase Suspend command, B0h, allows the sys-
tem to interrupt a sector erase operation and then read
data from, or program data to, any sector not selected
for erasure. This command is valid only during the sec-
tor erase operation, including the 50 μs time-out pe-
riod during the sector erase command sequence. The
Erase Suspend command is ignored if written during
the chip erase operation or Embedded Program
algorithm.
When the Erase Suspend command is written during
the sector erase operation, the device requires a typi-
cal of 5 μs (maximum of 20 μs) to suspend the erase
operation. However, when the Erase Suspend com-
mand is written during the sector erase time-out, the
device immediately terminates the time-out period and
suspends the erase operation.
After the erase operation has been suspended, the
device enters the erase-suspend-read mode. The sys-
tem can read data from or program data to any sector
not selected for erasure. (The device “erase sus-
pends” all sectors selected for erasure.) Reading at
any address within erase-suspended sectors pro-
duces status information on DQ7–DQ0. The system
can use DQ7, or DQ6 and DQ2 together, to determine
if a sector is actively erasing or is erase-suspended.
See
Write Operation Status on page 38
for information
on these status bits.
After an erase-suspended program operation is com-
plete, the device returns to the erase-suspend-read
mode. The system can determine the status of the
program operation using the DQ7 or DQ6 status bits,
just as in the standard word program operation. See
Write Operation Status on page 38
for more informa-
tion.
In the erase-suspend-read mode, the system can also
issue the autoselect command sequence. See
Autose-
lect Mode on page 19
and
Autoselect Command Se-
quence on page 28
for details.
To resume the sector erase operation, the system
must write the Erase Resume command. Further
writes of the Resume command are ignored. Another
Erase Suspend command can be written after the chip
has resumed erasing.
Note: During an erase operation, this flash device per-
forms multiple internal operations which are invisible
to the system. When an erase operation is suspended,
any of the internal operations that were not fully com-
pleted must be restarted. As such, if this flash device
is continually issued suspend/resume commands in
rapid succession, erase progress is impeded as a
function of the number of suspends. The result is a
longer cumulative erase time than without suspends.
Note that the additional suspends do not affect device
reliability or future performance. In most systems rapid
erase/suspend activity occurs only briefly. In such
cases, erase performance is not significantly im-
pacted.
相關PDF資料 |
PDF描述 |
|---|---|
| AM29LV640MT100PCI | 64 Megabit (4 M x 16-Bit/8 M x 8-Bit) MirrorBit⑩ 3.0 Volt-only Boot Sector Flash Memory |
| AM29LV640MT100REF | 64 Megabit (4 M x 16-Bit/8 M x 8-Bit) MirrorBit⑩ 3.0 Volt-only Boot Sector Flash Memory |
| AM29LV640MT100REI | 64 Megabit (4 M x 16-Bit/8 M x 8-Bit) MirrorBit⑩ 3.0 Volt-only Boot Sector Flash Memory |
| AM29LV640MT120PCI | 64 Megabit (4 M x 16-Bit/8 M x 8-Bit) MirrorBit⑩ 3.0 Volt-only Boot Sector Flash Memory |
| AM29LV640MT120REF | 64 Megabit (4 M x 16-Bit/8 M x 8-Bit) MirrorBit⑩ 3.0 Volt-only Boot Sector Flash Memory |
相關代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AM29LV640MU101RPCI | 制造商:Advanced Micro Devices 功能描述: |
| AM29LV640MU90NI | 制造商:Advanced Micro Devices 功能描述: |
| AM29LV640MU90RPC1 | 制造商:Advanced Micro Devices 功能描述: |
| AM29LV640MU90RPCI | 制造商:Advanced Micro Devices 功能描述: |
| AM29LV641DH120REF | 制造商:Spansion 功能描述:Flash Memory IC |
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