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| 型號(hào)： | 28LV64 |
| 元件分類： | EEPROM |
| 英文描述： | The CAT24FC02 is a 2-kb Serial CMOS EEPROM internally organized as 256 words of 8 bits each |
| 中文描述： | 該CAT24FC02是一個(gè)2 KB的EEPROM的國(guó)內(nèi)256個(gè)8位每字舉辦的串行CMOS |
| 文件頁數(shù)： | 9/12頁 |
| 文件大小： | 527K |
| 代理商： | 28LV64 |
CAT28LV64
9
Doc. No. 1010, Rev. D
HARDWARE DATA PROTECTION
The following is a list of hardware data protection features
that are incorporated into the CAT28LV64.
(1) V
CC
sense provides for write protection when V
CC
falls below 2.0V min.
(2) A power on delay mechanism, t
INIT
(see AC
characteristics), provides a 5 to 10 ms delay before
a write sequence, after V
CC
has reached 2.40V min.
(3) Write inhibit is activated by holding any one of
OE
low,
CE
high or
WE
high.
(4) Noise pulses of less than 20 ns on the
WE
or
CE
inputs will not result in a write cycle.
SOFTWARE DATA PROTECTION
The CAT28LV64 features a software controlled data
protection scheme which, once enabled, requires a data
algorithm to be issued to the device before a write can be
performed. The device is shipped from Catalyst with the
software protection NOT ENABLED (the CAT28LV64 is
in the standard operating mode).
Figure 9. Write Sequence for Activating Software
Data Protection
Figure 10. Write Sequence for Deactivating
Software Data Protection
Note:
(1)
Write protection is activated at this point whether or not any more writes are completed. Writing to addresses must occur within t
BLC
Max., after SDP activation.
28LV64 F12
PRSOFTWARE DATA
WRITE DATA:
XX
WRITE LAST BYTE
TO
LAST ADDRESS
TO ANY ADDRESS
AA
ADDRESS:
1555
WRITE DATA:
55
ADDRESS:
0AAA
WRITE DATA:
A0
ADDRESS:
1555
WRITE DATA:
WRITE DATA:
AA
ADDRESS:
1555
WRITE DATA:
55
ADDRESS:
0AAA
WRITE DATA:
80
ADDRESS:
1555
WRITE DATA:
AA
ADDRESS:
1555
WRITE DATA:
55
ADDRESS:
0AAA
WRITE DATA:
20
ADDRESS:
1555
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 28LV64A | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:64K (8K x 8) Low Voltage CMOS EEPROM |
| 28LV64A_04 | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:64K (8K x 8) Low Voltage CMOS EEPROM |
| 28LV64A-20/L | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:64K (8K x 8) Low Voltage CMOS EEPROM |
| 28LV64A--20/L | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:EEPROM|8KX8|CMOS|LDCC|32PIN|PLASTIC |
| 28LV64A-20/P | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:64K (8K x 8) Low Voltage CMOS EEPROM |
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