AM29LV128MH AMD [Advanced Micro Devices], AM29LV128MH Datasheet - Page 32

• Manufacturer Part Number: AM29LV128MH
• Manufacturer: AMD [Advanced Micro Devices]

30
DQ1 = 1?
No
Yes
(Note 3)
(Note 1)
Yes
(Note 2)
No
Write next address/data pair
Write number of addresses
to program minus 1(WC)
Write first address/data
Write program buffer to
address = Last Loaded
Write “Write to Buffer”
Read DQ7 - DQ0 with
Last Loaded Address
flash sector address
and Sector Address
Read DQ7 - DQ0 at
Buffer Operation?
Sector Address
FAIL or ABORT
command and
Abort Write to
WC = WC - 1
DQ7 = Data?
DQ7 = Data?
Figure 4. Write Buffer Programming Operation
DQ5 = 1?
Address
WC = 0 ?
No
Yes
No
No
No
D A T A S H E E T
Yes
Yes
Yes
Am29LV128MH/L
Part of “Write to Buffer”
Command Sequence
Write to buffer ABORTED.
Must write “Write-to-buffer
Abort Reset” command
Write to a different
sequence to return
sector address
to read mode.
PASS
Notes:
1.
2. DQ7 may change simultaneously with DQ5.
3. If this flowchart location was reached because
4.
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.
Therefore, DQ7 should be verified.
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.
See Tables 10 and 11 for command sequences
required for write buffer programming.
September 9, 2003