S71GL032A Datasheet, PDF (49/102 Pages) SPANSION – Stacked Multi-Chip Product (MCP) Flash Memory and RAM

Advance Information
Write “Write to Buffer”
command and
Sector Address
Write number of addresses
to program minus 1(WC)
and Sector Address
Write first address/data
Yes
WC = 0 ?
No
Abort Write to
Yes
Buffer Operation?
(Note 1)
No
Write next address/data pair
WC = WC - 1
Write program buffer to
flash sector address
Part of “Write to Buffer”
Command Sequence
Write to a different
sector address
Write to buffer ABORTED.
Must write “Write-to-buffer
Abort Reset” command
sequence to return
to read mode.
Read DQ7 - DQ0 at
Last Loaded Address
No
DQ1 = 1?
Yes
Yes
DQ7 = Data?
No
No
DQ5 = 1?
Yes
Read DQ7 - DQ0 with
address = Last Loaded
Address
(Note 2)
Yes
DQ7 = Data?
No
(Note 3)
FAIL or ABORT
PASS
Notes:
1. When Sector Address is specified, any address in the selected sector is acceptable. However, when loading Write-Buffer
address locations with data, all addresses must fall within the selected Write-Buffer Page.
2. DQ7 may change simultaneously with DQ5. Therefore, DQ7 should be verified.
3. If this flowchart location was reached because DQ5= “1”, then the device FAILED. If this flowchart location was reached
because DQ1= “1”, then the Write to Buffer operation was ABORTED. In either case, the proper reset command must be
written before the device can begin another operation. If DQ1=1, write the Write-Buffer-Programming-Abort-Reset
command. if DQ5=1, write the Reset command.
4. See Table 22 for command sequences required for write buffer programming.
Figure 3. Write Buffer Programming Operation
March 31, 2005 S71GL032A_00_A0
S71GL032A Based MCPs
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