參數(shù)資料
型號: X28HT010W
廠商: INTERSIL CORP
元件分類: DRAM
英文描述: 5V, Byte Alterable EEPROM
中文描述: 128K X 8 EEPROM 5V, 200 ns, UUC
封裝: WAFER
文件頁數(shù): 7/20頁
文件大?。?/td> 444K
代理商: X28HT010W
7
FN8105.1
February 12, 2007
Software Data Protection
Regardless of whether the device has previously been
protected or not, once the software data protection algorithm
is used and data has been written, the X28C010/X28HT010
will automatically disable further writes unless another
command is issued to cancel it. If no further commands are
issued the X28C010/X28HT010 will be write protected
during power-down and after any subsequent power-up. The
state of A
15
and A
16
while executing the algorithm is don’t
care.
Note:
Once initiated, the sequence of write operations
should not be interrupted.
CE
WE
(V
CC
)
Write
Protected
V
CC
0V
Data
Addr
AA
5555
55
2AAA
A0
5555
t
BLC MAX
Writes
Ok
Byte
or
Page
t
WC
FIGURE 6. TIMING SEQUENCE—BYTE OR PAGE WRITE
Write Last
Byte
Last Address
Write Data 55
to Address
2AAA
Write Data A0
to Address
5555
Write Data XX
to Any
Address
After t
WC
Re-Enters Data
Protected State
Write Data AA
to Address
5555
Byte/Page
Load Operation
Optional
FIGURE 7. WRITE SEQUENCE FOR SOFTWARE DATA
PROTECTION
X28C010, X28HT010
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