S29GL064N90BFI040 Spansion Inc., S29GL064N90BFI040 Datasheet - Page 55
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S29GL064N90BFI040
Manufacturer Part Number
S29GL064N90BFI040
Description
Manufacturer
Spansion Inc.
Datasheet
1.S29GL064N90BFI040.pdf
(81 pages)
Specifications of S29GL064N90BFI040
Cell Type
NOR
Density
64Mb
Access Time (max)
90ns
Interface Type
Parallel
Boot Type
Bottom
Address Bus
23/22Bit
Operating Supply Voltage (typ)
3/3.3V
Operating Temp Range
-40C to 85C
Package Type
FBGA
Sync/async
Asynchronous
Operating Temperature Classification
Industrial
Operating Supply Voltage (min)
2.7V
Operating Supply Voltage (max)
3.6V
Word Size
8/16Bit
Number Of Words
8M/4M
Supply Current
50mA
Mounting
Surface Mount
Pin Count
48
Lead Free Status / RoHS Status
Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
S29GL064N90BFI040A
Manufacturer:
INTEL
Quantity:
3 574
10.10 Write Operation Status
10.11 DQ7: Data# Polling
October 29, 2008 S29GL-N_01_12
The device provides several bits to determine the status of a program or erase operation: DQ2, DQ3, DQ5,
DQ6, and DQ7.
and DQ6 each offer a method for determining whether a program or erase operation is complete or in
progress. The device also provides a hardware-based output signal, RY/BY#, to determine whether an
Embedded Program or Erase operation is in progress or is completed.
The Data# Polling bit, DQ7, indicates to the host system whether an Embedded Program or Erase algorithm
is in progress or completed, or whether the device is in Erase Suspend. Data# Polling is valid after the rising
edge of the final WE# pulse in the command sequence.
During the Embedded Program algorithm, the device outputs on DQ7 the complement of the datum
programmed to DQ7. This DQ7 status also applies to programming during Erase Suspend. When the
Embedded Program algorithm is complete, the device outputs the datum programmed to DQ7. The system
must provide the program address to read valid status information on DQ7. If a program address falls within a
protected sector, Data# Polling on DQ7 is active for approximately 1 µs, then the device returns to the read
mode.
During the Embedded Erase algorithm, Data# Polling produces a 0 on DQ7. When the Embedded Erase
algorithm is complete, or if the device enters the Erase Suspend mode, Data# Polling produces a 1 on DQ7.
The system must provide an address within any of the sectors selected for erasure to read valid status
information on DQ7.
After an erase command sequence is written, if all sectors selected for erasing are protected, Data# Polling
on DQ7 is active for approximately 100 µs, then the device returns to the read mode. If not all selected
sectors are protected, the Embedded Erase algorithm erases the unprotected sectors, and ignores the
selected sectors that are protected. However, if the system reads DQ7 at an address within a protected
sector, the status may not be valid.
Just prior to the completion of an Embedded Program or Erase operation, DQ7 may change asynchronously
with DQ0–DQ6 while Output Enable (OE#) is asserted low. That is, the device may change from providing
status information to valid data on DQ7. Depending on when the system samples the DQ7 output, it may read
the status or valid data. Even if the device completed the program or erase operation and DQ7 has valid data,
the data outputs on DQ0–DQ6 may be still invalid. Valid data on DQ0–DQ7 appears on successive read
cycles.
Table 10.5 on page 60
Polling algorithm.
Table 10.5 on page 60
Figure 15.8 on page 69
shows the outputs for Data# Polling on DQ7.
D a t a
S29GL-N MirrorBit
S h e e t
and the following subsections describe the function of these bits. DQ7
shows the Data# Polling timing diagram.
®
Flash Family
Figure 10.5 on page 56
shows the Data#
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