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AM29LV400BT-55RSE データシートの表示(PDF) - Advanced Micro Devices

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AM29LV400BT-55RSE Datasheet PDF : 48 Pages
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DATA SHEET
DQ7 or DQ6 status bits, just as in the standard pro-
gram operation. See “Write Operation Status” for more
information.
The system may also write the autoselect command
sequence when the device is in the Erase Suspend
mode. The device allows reading autoselect codes
even at addresses within erasing sectors, since the
codes are not stored in the memory array. When the
device exits the autoselect mode, the device reverts to
the Erase Suspend mode, and is ready for another
valid operation. See “Autoselect Command Sequence”
for more information.
The system must write the Erase Resume command
(address bits are “don’t care”) to exit the erase sus-
pend mode and continue the sector erase operation.
Further writes of the Resume command are ignored.
Another Erase Suspend command can be written after
the device has resumed erasing.
START
Write Erase
Command Sequence
Data Poll
from System
No
Data = FFh?
Yes
Embedded
Erase
algorithm
in progress
Erasure Completed
Notes:
1. See Table 5 for erase command sequence.
2. See “DQ3: Sector Erase Timer” for more information.
Figure 4. Erase Operation
18
Am29LV400B
21523D4 December 4, 2006

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