AM41LV3204MB10IT AMD [Advanced Micro Devices], AM41LV3204MB10IT Datasheet - Page 30

• Manufacturer Part Number: AM41LV3204MB10IT
• Description: Stacked Multi-chip Package (MCP) 32 Mbit (4 M x 8 bit/2 M x 16-bit) Flash Memory and 4 Mbit (512K x 8-Bit/256 K x 16-Bit) Static RAM
• Manufacturer: AMD [Advanced Micro Devices]

June 10, 2003
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
Read DQ7 - DQ0 with
Write “Write to Buffer”
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
P R E L I M I N A R Y
Yes
Yes
Yes
Am41LV3204M
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
required for write buffer programming.
10
and
13
for command sequences
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