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S71GLXXXNC0 데이터시트(HTML) 89 Page - SPANSION

부품명 S71GLXXXNC0
상세내용  Stacked Multi-chip Product (MCP)
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S71GLXXXNC0 데이터시트(HTML) 89 Page - SPANSION

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December 15, 2004 S29GLxxxN_MCP_A1
S29GLxxxN MirrorBitTM Flash Family
89
Ad vance
Info rmat i o n
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 shows the status of DQ3 relative to the other status bits.
DQ1: Write-to-Buffer Abort
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.
Table 13. Write Operation Status
Notes:
1. DQ5 switches to ‘1’ when an Embedded Program, Embedded Erase, or Write-to-Buffer operation has exceeded the maximum
timing limits. Refer to the section on DQ5 for more information.
2. DQ7 and DQ2 require a valid address when reading status information. Refer to the appropriate subsection for further
details.
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.
Status
DQ7
(Note 2)
DQ6
DQ5
(Note 1)
DQ3
DQ2
(Note 2)
DQ1
RY/
BY#
Standard
Mode
Embedded Program Algorithm
DQ7#
Toggle
0
N/A
No toggle
0
0
Embedded Erase Algorithm
0
Toggle
0
1
Toggle
N/A
0
Program
Suspend
Mode
Program-
Suspend
Read
Program-Suspended
Sector
Invalid (not allowed)
1
Non-Program
Suspended Sector
Data
1
Erase
Suspend
Mode
Erase-
Suspend
Read
Erase-Suspended
Sector
1
No toggle
0
N/A
Toggle
N/A
1
Non-Erase
Suspended Sector
Data
1
Erase-Suspend-Program
(Embedded Program)
DQ7#
Toggle
0
N/A
N/A
N/A
0
Write-to-
Buffer
Busy (Note 3)
DQ7#
Toggle
0
N/A
N/A
0
0
Abort (Note 4)
DQ7#
Toggle
0
N/A
N/A
1
0


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