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參數(shù)資料
| 型號： | XM28C020PM-25 |
| 英文描述： | 5 Volt, Byte Alterable E2PROM |
| 中文描述： | 5伏，可變E2PROM的字節(jié) |
| 文件頁數(shù)： | 8/16頁 |
| 文件大小： | 74K |
| 代理商： | XM28C020PM-25 |
XM28C020
8
RESETTING SOFTWARE DATA PROTECTION
Figure 8. Reset Software Data Protection Timing Sequence
3872 FHD F16
WRITE DATA 55
TO ADDRESS
2AAA
WRITE DATA 55
TO ADDRESS
2AAA
WRITE DATA 80
TO ADDRESS
5555
WRITE DATA AA
TO ADDRESS
5555
WRITE DATA 20
TO ADDRESS
5555
WRITE DATA AA
TO ADDRESS
5555
3872 FHD F17
Figure 9. Software Sequence to Deactivate
Software Data Protection
In the event the user wants to deactivate the software
data protection feature for testing or reprogramming in
an E
2
PROM programmer, the following six step algo-
rithm will reset the internal protection circuit. After t
WC
,
the device will be in standard operating mode.
CE
WE
STANDARD
OPERATING
MODE
VCC
DATA
ADDRESS
A0–A15*
AA
5555
55
2AAA
80
5555
*A16 & A17 select one of four devices on the module.
≥
tWC
AA
5555
55
2AAA
20
5555
SYMBOL TABLE
WAVEFORM
INPUTS
OUTPUTS
Must be
steady
Will be
steady
May change
from LOW
to HIGH
Will change
from LOW
to HIGH
May change
from HIGH
to LOW
Will change
from HIGH
to LOW
Don’t Care:
Changes
Allowed
N/A
Changing:
State Not
Known
Center Line
is High
Impedance
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| XM28C020-20 | 5 Volt, Byte Alterable E2PROM |
| XM28C020-25 | 5 Volt, Byte Alterable E2PROM |
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| XM28C020PMHR-12 | 制造商:XICOR 制造商全稱:Xicor Inc. 功能描述:5 Volt, Byte Alterable E2PROM |
| XM28C020PMHR-15 | 制造商:XICOR 制造商全稱:Xicor Inc. 功能描述:5 Volt, Byte Alterable E2PROM |
| XM28C020PMHR-20 | 制造商:XICOR 制造商全稱:Xicor Inc. 功能描述:5 Volt, Byte Alterable E2PROM |
| XM28C020PMHR-25 | 制造商:XICOR 制造商全稱:Xicor Inc. 功能描述:5 Volt, Byte Alterable E2PROM |
| XM28C040 | 制造商:XICOR 制造商全稱:Xicor Inc. 功能描述:5 Volt, Byte Alterable E2PROM |
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