參數(shù)資料
型號: L640ML12PI
廠商: Advanced Micro Devices, Inc.
英文描述: 64 Megabit (4 M x 16-Bit/8 M x 8-Bit) MirrorBit⑩ 3.0 Volt-only Uniform Sector Flash Memory with VersatileI/O⑩ Control
中文描述: 64兆位(4個M x 16位/八米× 8位)的MirrorBit⑩3.0伏特,只有統(tǒng)一閃存部門與VersatileI /輸出⑩控制
文件頁數(shù): 30/62頁
文件大?。?/td> 602K
代理商: L640ML12PI
28
Am29LV640MH/L
December 14, 2005
D A T A S H E E T
Figure 4.
Write Buffer Programming Operation
Write “Write to Buffer”
command and
Sector Address
Write number of addresses
to program minus 1(WC)
and Sector Address
Write program buffer to
flash sector address
Write first address/data
Write to a different
sector address
FAIL or ABORT
PASS
Read DQ7 - DQ0 at
Last Loaded Address
Read DQ7 - DQ0 with
address = Last Loaded
Address
Write next address/data pair
WC = WC - 1
WC = 0
Part of “Write to Buffer”
Command Sequence
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
No
Abort Write to
Buffer Operation
DQ7 = Data
DQ7 = Data
DQ5 = 1
DQ1 = 1
Write to buffer ABORTED.
Must write “Write-to-buffer
Abort Reset” command
sequence to return
to read mode.
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.
DQ7 may change simultaneously with DQ5.
Therefore, DQ7 should be verified.
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.
2.
3.
4.
See
Table 11
for command sequences required for
write buffer programming.
(Note 1)
(Note 2)
(Note 3)
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