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AM29LV320MB100E Datasheet

  • AM29LV320MB100E

  • 32 Megabit (2 M x 16-Bit/4 M x 8-Bit) MirrorBit 3.0 Volt-onl...

  • 1335.99KB

  • 61页

  • AMD

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D A T A S H E E T
Write 鈥淲rite to Buffer鈥?/div>
command and
Sector Address
Write number of addresses
to program minus 1(WC)
and Sector Address
Part of 鈥淲rite to Buffer鈥?/div>
Command Sequence
Write first address/data
Yes
WC = 0 ?
No
Abort Write to
Buffer Operation?
No
Yes
Write to buffer ABORTED.
Must write 鈥淲rite-to-buffer
Abort Reset鈥?command
sequence to return
to read mode.
Write to a different
sector address
(Note 1)
Write next address/data pair
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 DQ7 - DQ0 at
Last Loaded Address
2.
3.
DQ7 may change simultaneously with DQ5.
Therefore, DQ7 should be verified.
If this flowchart location was reached because
DQ5= 鈥?鈥? then the device FAILED. If this
flowchart location was reached because DQ1=
鈥?鈥? 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
12
and
13
for command sequences
required for write buffer programming.
DQ7 = Data?
No
No
DQ1 = 1?
Yes
DQ5 = 1?
Yes
Read DQ7 - DQ0 with
address = Last Loaded
Address
No
Yes
4.
(Note 2)
DQ7 = Data?
No
Yes
(Note 3)
FAIL or ABORT
PASS
Figure 4.
Write Buffer Programming Operation
28
Am29LV320MT/B
May 16, 2003

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