參數(shù)資料
型號(hào)： S29GL064A10BAIW12
廠商： SPANSION LLC
元件分類： PROM
英文描述： 4M X 16 FLASH 3V PROM, 100 ns, PBGA64
封裝： FBGA-64
文件頁(yè)數(shù)： 68/97頁(yè)
文件大?。?/td> 3490K
代理商： S29GL064A10BAIW12
68
S29GL-A MirrorBit Flash Family
S29GL-A_00_A5 January 11, 2006
Prel imi n ary
In all these cases, the system must write the reset command to return the device
to the reading the array (or to erase-suspend-read if the device was previously
in the erase-suspend-program mode).
DQ3: Sector Erase Timer
After writing a sector erase command sequence, the system may read DQ3 to
determine whether or not erasure began. (The sector erase timer does not apply
to the chip erase command.) If additional sectors are selected for erasure, 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 be-
tween additional sector erase commands from the system can be assumed to be
less than 50 s, 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 accepted the
command sequence, and then read DQ3. If DQ3 is 1, the Embedded Erase algo-
rithm has begun; all further commands (except Erase Suspend) are ignored until
the erase operation is complete. If DQ3 is 0, the device accepts additional sector
erase commands. To ensure the command is accepted, the system software
should check the status of DQ3 prior to and following each subsequent sector
erase command. If DQ3 is high on the second status check, the last command
might not have been accepted.
Table 32 on page 68 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 on page 21 for more details.
Notes:
1. DQ5 switches to 1 when an Embedded Program, Embedded Erase, or Write-to-Buffer operation 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 aborts the write-to-buffer operation.
Table 32. Write Operation Status
Status
DQ7
DQ6
DQ5
DQ3
DQ2
DQ1 RY/BY#
Standard Mode
Embedded Program Algorithm
DQ7#
Toggle
0
N/A
No toggle
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
0
Write-to-
Buffer
Busy (Note 3)DQ7#
Toggle
0
N/A
0
Abort (Note 4)DQ7#
Toggle
0
N/A
1
0
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