AM29LV640MB110REI Spansion Inc., AM29LV640MB110REI Datasheet - Page 36

• 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 system can monitor DQ3 to determine if the sec-
tor erase timer has timed out. See
Timer on page
e d g e o f t h e f i n a l W E # p u l s e in t h e c o m m a n d
sequence.
When the Embedded Erase algorithm is complete, the
device returns to reading array data and addresses
are no longer latched. The system can determine the
status of the erase operation by reading DQ7, DQ6, or
DQ2 in the erasing sector. See
on page 38
Once the sector erase operation has begun, only the
Erase Suspend command is valid. All other com-
mands are ignored. However, note that a hardware
reset immediately terminates the erase operation. If
that occurs, the sector erase command sequence
should be reinitiated once the device has returned to
reading array data, to ensure data integrity.
Figure 7
tion. See the table,
page 48
ure 19
34
for timing diagrams.
in
illustrates the algorithm for the erase opera-
AC Characteristics
for information on these status bits.
41. The time-out begins from the rising
Erase and Program Operations on
for parameters, and
Write Operation Status
DQ3: Sector Erase
D A T A
Am29LV640MT/B
Fig-
S H E E T
Notes:
1. See
2. See
sequence.
information on the sector erase timer.
Table 12
DQ3: Sector Erase Timer on page 41
No
Command Sequence
Figure 7. Erase Operation
Data Poll to Erasing
Erasure Completed
Bank from System
and
Write Erase
Data = FFh?
(Notes 1, 2)
START
Table 13
Yes
for erase command
26190C8 February 1, 2007
Embedded
Erase
algorithm
in progress
for