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參數(shù)資料
| 型號： | X28C512JIZ-15 |
| 廠商： | INTERSIL CORP |
| 元件分類： | DRAM |
| 英文描述： | 5V, Byte Alterable EEPROM |
| 中文描述： | 64K X 8 EEPROM 5V, 150 ns, PQCC32 |
| 封裝： | ROHS COMPLIANT, PLASTIC, MS-016AE, LCC-32 |
| 文件頁數(shù)： | 8/21頁 |
| 文件大?。?/td> | 473K |
| 代理商： | X28C512JIZ-15 |
8
FN8106.2
June 7, 2006
Software Data Protection
Software Algorithm
Selecting the software data protection mode requires the
host system to precede data write operations by a series of
three write operations to three specific addresses. Refer to
Figures 4A and 4B for the sequence. The three byte
sequence opens the page write window, enabling the host to
write from one to one hundred twenty-eight bytes of data.
Once the page load cycle has been completed, the device
will automatically be returned to the data protected state.
Regardless of whether the device has previously been
protected or not, once the software data protected algorithm
is used and data has been written, the X28C512, X28C513
will automatically disable further writes, unless another
command is issued to cancel it. If no further commands are
issued the X28C512, X28C513 will be write-protected during
power-down and after any subsequent power-up. The state
of A
15
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
AAA
5555
55
2AAA
A0
5555
≤
t
BLC MAX
Writes
ok
Byte
or
Page
t
WC
Note: All other timings and control pins are per page write timing requirements
FIGURE 4A. TIMING SEQUENCE—SOFTWARE DATA PROTECT ENABLE SEQUENCE FOLLOWED BY BYTE OR PAGE WRITE
Write Last
Byte to
Last Address
Write Data XX
to any
Address
Write Data 80
to Address
5555
Write Data 55
to Address
2AAA
Write Data AA
to Address
5555
After t
WC
Re-Enters Data
Protected State
Optional
Byte/Page
Load Operation
FIGURE 4B. WRITE SEQUENCE FOR SOFTWARE DATA
PROTECTION
X28C512, X28C513
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| X28C512JZ-15 | 5V, Byte Alterable EEPROM |
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| X28C513JZ-15 | 5V, Byte Alterable EEPROM |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| X28C512JM-12 | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:5V, Byte Alterable EEPROM |
| X28C512JM-15 | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:5V, Byte Alterable EEPROM |
| X28C512JM-20 | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:5V, Byte Alterable EEPROM |
| X28C512JM-25 | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:5V, Byte Alterable EEPROM |
| X28C512JM-90 | 制造商:XICOR 制造商全稱:Xicor Inc. 功能描述:5 Volt, Byte Alterable E2PROM |
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