AM29LV640MB110REI Spansion Inc., AM29LV640MB110REI Datasheet - Page 32

• Manufacturer Part Number: AM29LV640MB110REI
• Manufacturer: Spansion Inc.

Specifications of AM29LV640MB110REI

• Cell Type: NOR
• Density: 64Mb
• Access Time (max): 110ns
• Interface Type: Parallel
• Boot Type: Bottom
• Address Bus: 23/22Bit
• Operating Supply Voltage (typ): 3.3V
• Operating Temp Range: -40C to 85C
• Package Type: TSOP
• Program/erase Volt (typ): 3 to 3.6V
• Sync/async: Asynchronous
• Operating Temperature Classification: Industrial
• Operating Supply Voltage (min): 3V
• Operating Supply Voltage (max): 3.6V
• Word Size: 8/16Bit
• Number Of Words: 8M/4M
• Supply Current: 20mA
• Mounting: Surface Mount
• Pin Count: 48
• Lead Free Status / Rohs Status: Not Compliant

the write buffer. DQ7, DQ6, DQ5, and DQ1 should be
monitored to determine the device status during Write
Buffer Programming.
The write-buffer programming operation can be sus-
pended using the standard program suspend/resume
commands. Upon successful completion of the Write
Buffer Programming operation, the device is ready to
execute the next command.
The Write Buffer Programming Sequence can be
aborted in the following ways:
■ Load a value that is greater than the page buffer
■ Write to an address in a sector different than the
■ Write
■ Write data other than the Confirm Command after
30
size during the Number of Locations to Program
step.
one specified during the Write-Buffer-Load com-
mand.
write-buffer-page than the one selected by the
Starting Address during the write buffer data load-
ing stage of the operation.
the specified number of data load cycles.
an
Address/Data
pair
to
a
D A T A
different
Am29LV640MT/B
S H E E T
The abort condition is indicated by DQ1 = 1, DQ7 =
DATA# (for the last address location loaded), DQ6 =
toggle, and DQ5=0. A Write-to-Buffer-Abort Reset
command sequence must be written to reset the de-
vice for the next operation. Note that the full 3-cycle
Write-to-Buffer-Abort Reset command sequence is re-
quired when using Write-Buffer-Programming features
in Unlock Bypass mode.
Accelerated Program
The device offers accelerated program operations
through the WP#/ACC pin. When the system asserts
V
ters the Unlock Bypass mode. The system can then
write the two-cycle Unlock Bypass program command
sequence. The device uses the higher voltage on the
WP#/ACC pin to accelerate the operation. Note that
the WP#/ACC pin must not be at V
other than accelerated programming, or device dam-
age can result. In addition, no external pullup is neces-
sary since the WP#/ACC pin has internal pullup to
V
Figure 5
ation. See the table,
on page 48
Figure 17
HH
CC
.
on the WP#/ACC pin, the device automatically en-
illustrates the algorithm for the program oper-
for timing diagrams.
in
AC Characteristics
Erase and Program Operations
26190C8 February 1, 2007
for parameters, and
HH
for operations