D A T A S H E E T
Step 1
Step 2
Step 3
25 ns
25 ns
25 ns
25 ns
25 ns
CLK
LBA#
BAA#
Data
Da +1
Da +2
Da
65 ns
18 ns
18 ns
OE#
Figure 3. Burst Mode Read with 40 MHz CLK, 65 ns tIACC, 18 ns tBACC Parameters
Step 1
Step 2
Step 3
40 ns
40 ns
40 ns
40 ns
40 ns
CLK
LBA#
BAA#
Data
Da
Da +1
Da +2
Da +3
70 ns
24 ns
24 ns
24 ns
OE#
Figure 4. Burst Mode Read with 25 MHz CLK, 70 ns tIACC, 24 ns tBACC Parameters
The reset command may be written between the se-
quence cycles in an autoselect command sequence.
Once in the autoselect mode, the reset command must
be written to return to reading array data (also applies
to autoselect during Erase Suspend).
Reset Command
Writing the reset command to the device resets the de-
vice to reading array data. Address bits are don’t care
for this command.
The reset command may be written between the se-
quence cycles in an erase command sequence before
erasing begins. This resets the device to reading array
data. Once erasure begins, however, the device ig-
nores reset commands until the operation is complete.
If DQ5 goes high during a program or erase operation,
writing the reset command returns the device to read-
ing array data (also applies during Erase Suspend).
See “AC Characteristics” for parameters, and to
Figure 17 for the timing diagram.
The reset command may be written between the se-
quence cycles in a program command sequence be-
fore programming begins. This resets the device to
reading array data (also applies to programming in
Erase Suspend mode). Once programming begins,
however, the device ignores reset commands until the
operation is complete.
Autoselect Command Sequence
The autoselect command sequence allows the host
system to access the manufacturer and devices codes,
and determine whether or not a sector is protected.
Table 8 shows the address and data requirements.
18
Am29BL162C
July 8, 2005
SPANSION [ SPANSION ]
