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參數(shù)資料
| 型號： | PUMA67E4001A-15E |
| 元件分類： | PROM |
| 英文描述： | 128K X 32 EEPROM 5V MODULE, 150 ns, CQMA68 |
| 封裝： | CERAMIC, LCC-68 |
| 文件頁數(shù)： | 15/15頁 |
| 文件大?。?/td> | 235K |
| 代理商： | PUMA67E4001A-15E |
ISSUE 4.3 : January 2001
PUMA 2/67E4001/A/B - 12/15/20
9
MODE
CS1~4
OE
OUTPUTS
Read
Write
Standby
Write Inhibit
WE
0
1
X
1
0
X
1
X
0
I
X
0
Data Out
Data in
Floating
Software Data Protection
The device can be automatically protected during power-up and power-down without the need for external circuits
by employing the software data protect feature. The internal software data protection circuit is enabled after the
first write operation utilizing the software algorithm. This circuit is nonvolatile and will remain set for the life of the
device unless the reset command is issued.
Once the software protection is enabled, the device is also protected against inadvertent and accidental writes in
that, the software algorithm must be issued prior to writing additional data to the device.
Operating Modes
The table below shows the logic inputs required to control the operation of the device.
0 = V
IL : 1 = VIH : X = VIH or VIL
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