s71gl128nc0 Meet Spansion Inc., s71gl128nc0 Datasheet - Page 89

• Manufacturer Part Number: s71gl128nc0
• Description: Stacked Multi-chip Product Mcp 512/256/128 Megabit 32/16/8 M X 16-bit Cmos 3.0 Volt-only Mirrorbittm Page-mode Flash Memory With 64 Megabit 4m X 16-bit Psram
• Manufacturer: Meet Spansion Inc.

Notes:
1. DQ5 switches to ‘1’ when an Embedded Program, Embedded Erase, or Write-to-Buffer operation has exceeded the maximum
2. DQ7 and DQ2 require a valid address when reading status information. Refer to the appropriate subsection for further
3. The Data# Polling algorithm should be used to monitor the last loaded write-buffer address location.
4. DQ1 switches to ‘1’ when the device has aborted the write-to-buffer operation.
December 15, 2004 S29GLxxxN_MCP_A1
Standard
Write-to-
Program
Suspend
Suspend
Buffer
timing limits. Refer to the section on DQ5 for more information.
details.
Erase
Mode
Mode
Mode
DQ1: Write-to-Buffer Abort
Embedded Program Algorithm
Embedded Erase Algorithm
Erase-Suspend-Program
(Embedded Program)
Busy (Note 3)
Abort (Note 4)
Program-
Suspend
Suspend
Erase-
Read
Read
the entire time-out also applies after each additional sector erase command.
When the time-out period is complete, DQ3 switches from a “0” to a “1.” If the
time between additional sector erase commands from the system can be as-
sumed to be less than 50 µs, the system need not monitor DQ3. See also the
Sector Erase Command Sequence section.
After the sector erase command is written, the system should read the status of
DQ7 (Data# Polling) or DQ6 (Toggle Bit I) to ensure that the device has accepted
the command sequence, and then read DQ3. If DQ3 is “1,” the Embedded Erase
algorithm has begun; all further commands (except Erase Suspend) are ignored
until the erase operation is complete. If DQ3 is “0,” the device will accept addi-
tional sector erase commands. To ensure the command has been accepted, the
system software should check the status of DQ3 prior to and following each sub-
sequent sector erase command. If DQ3 is high on the second status check, the
last command might not have been accepted.
Table 13
DQ1 indicates whether a Write-to-Buffer operation was aborted. Under these
conditions DQ1 produces a “1”. The system must issue the Write-to-Buffer-Abort-
Reset command sequence to return the device to reading array data. See Write
Buffer section for more details.
Status
Program-Suspended
Sector
Non-Program
Suspended Sector
Erase-Suspended
Sector
Non-Erase
Suspended Sector
shows the status of DQ3 relative to the other status bits.
A d v a n c e
Table 13. Write Operation Status
S29GLxxxN MirrorBit
I n f o r m a t i o n
(Note 2)
DQ7#
DQ7#
DQ7#
DQ7#
DQ7
0
1
No toggle
Toggle
Toggle
Toggle
Toggle
Toggle
DQ6
TM
Flash Family
Invalid (not allowed)
(Note 1)
DQ5
0
0
0
0
0
0
Data
Data
DQ3
N/A
N/A
N/A
N/A
N/A
1
No toggle
(Note 2)
Toggle
Toggle
DQ2
N/A
N/A
N/A
DQ1
N/A
N/A
N/A
0
0
1
BY#
RY/
0
0
1
1
1
1
0
0
0
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