A d v a n c e I n f o r m a t i o n
Write “Write to Buffer”
command and
Sector Address
Part of “Write to Buffer”
Command Sequence
Write number of addresses
to program minus 1(WC)
and Sector Address
Write first address/data
Yes
WC = 0 ?
No
Write to a different
sector address
Abort Write to
Buffer Operation?
Yes
Write to buffer ABORTED.
Must write “Write-to-buffer
Abort Reset” command
sequence to return
No
(Note 1)
Write next address/data pair
to read mode.
WC = WC - 1
Write program buffer to
flash sector address
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.
Read DQ15 - DQ0 at
Last Loaded Address
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
Yes
DQ7 = Data?
No
No
No
DQ1 = 1?
Yes
DQ5 = 1?
Yes
command. if DQ5=1, write the Reset
command.
Read DQ15 - DQ0 with
address = Last Loaded
Address
4. See Tables 16 and 17 for command
sequences required for write buffer
programming.
Yes
(Note 2)
DQ7 = Data?
No
(Note 3)
FAIL or ABORT
PASS
Figure 1. Write Buffer Programming Operation
May 13, 2004 27631A4
S29GLxxxN MirrorBitTM Flash Family
63
SPANSION [ SPANSION ]
