AM29LV640MH SPANSION [SPANSION], AM29LV640MH Datasheet - Page 31

• Manufacturer Part Number: AM29LV640MH
• Description: 64 Megabit (4 M x 16-Bit/8 M x 8-Bit) MirrorBit 3.0 Volt-only Uniform Sector Flash Memory with VersatileI/O Control
• Manufacturer: SPANSION [SPANSION]

Program Suspend/Program Resume
Command Sequence
The Program Suspend command allows the system to
interrupt a programming operation or a Write to Buffer
programming operation so that data can be read from
any non-suspended sector. When the Program Sus-
pend command is written during a programming pro-
cess, the device halts the program operation within 15
μs maximum (5 μs typical) and updates the status bits.
Addresses are not required when writing the Program
Suspend command.
After the programming operation has been sus-
pended, the system can read array data from any
non-suspended sector. The Program Suspend com-
mand may also be issued during a programming oper-
ation while an erase is suspended. In this case, data
may be read from any addresses not in Erase Sus-
pend or Program Suspend. If a read is needed from
the SecSi Sector area (One-time Program area), then
user must use the proper command sequences to
enter and exit this region. Note that the SecSi Sector,
December 14, 2005
Note: See
Table 11
Increment Address
for program command sequence.
Figure 5. Program Operation
D A T A S H E E T
Embedded
in progress
algorithm
Program
Am29LV640MH/L
No
Command Sequence
autoselect, and CFI functions are unavailable when an
program operation is in progress.
The system may also write the autoselect command
sequence when the device is in the Program Suspend
mode. The system can read as many autoselect
codes as required. When the device exits the autose-
lect mode, the device reverts to the Program Suspend
mode, and is ready for another valid operation. See
Autoselect Command Sequence for more information.
After the Program Resume command is written, the
device reverts to programming. The system can de-
termine the status of the program operation using the
DQ7 or DQ6 status bits, just as in the standard pro-
gram operation. See
information.
The system must write the Program Resume com-
mand (address bits are don’t care) to exit the Program
Suspend mode and continue the programming opera-
tion. Further writes of the Resume command are ig-
nored. Another Program Suspend command can be
written after the device has resume programming.
Write Program
Last Address?
Programming
from System
Verify Data?
Completed
Data Poll
START
Yes
Yes
No
Write Operation Status
for more
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