參數(shù)資料
型號(hào): AM29LV640MU40PCI
廠商: Advanced Micro Devices, Inc.
元件分類: FLASH
英文描述: 64 Megabit (4 M x 16-Bit) MirrorBita?? 3.0 Volt-only Uniform Sector Flash Memory with VersatileI/Oa?? Control
中文描述: 64Mb(4個(gè)M x 16位)的MirrorBit,3V,統(tǒng)一扇區(qū)閃存并有Versatile輸入/輸出控制
文件頁(yè)數(shù): 29/59頁(yè)
文件大?。?/td> 699K
代理商: AM29LV640MU40PCI
February1,2007 25301C5
Am29LV640MU
27
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 10
for command sequences required for
write buffer programming.
(Note 3)
(Note 1)
(Note 2)
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