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参数资料
| 型号： | CAT28LV65WI25 |
| 厂商： | ON Semiconductor |
| 文件页数： | 9/15页 |
| 文件大小： | 0K |
| 描述： | IC EEPROM 64KBIT 250NS 28SOIC |
| 产品变化通告： | Product Discontinuation 30/Sept/2011 |
| 标准包装： | 27 |
| 格式 - 存储器： | EEPROMs - 并行 |
| 存储器类型： | EEPROM |
| 存储容量： | 64K (8K x 8) |
| 速度： | 250ns |
| 接口： | 并联 |
| 电源电压： | 3 V ~ 3.6 V |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 28-SOIC（0.295"，7.50mm 宽） |
| 供应商设备封装： | 28-SOIC |
| 包装： | 管件 |
| 其它名称： | 28LV65WI-25 CAT28LV65WI-25 CAT28LV65WI-25-ND |
CAT28LV65
Hardware Data Protection
The following is a list of hardware data protection features
that are incorporated into the CAT28LV65.
1. V CC sense provides for write protection when V CC
falls below 2.0 V 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 2.40 V
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 CAT28LV65 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 ON Semiconductor
with the software protection NOT ENABLED (the
CAT28LV65 is in the standard operating mode).
WRITE DATA:
ADDRESS:
WRITE DATA:
ADDRESS:
WRITE DATA:
ADDRESS:
AA
1555
55
0AAA
A0
1555
WRITE DATA:
ADDRESS:
WRITE DATA:
ADDRESS:
WRITE DATA:
ADDRESS:
AA
1555
55
0AAA
80
1555
SOFTWARE DATA
PROTECTION ACTIVATED (Note 14)
WRITE DATA:
ADDRESS:
AA
1555
WRITE DATA:
XX
WRITE DATA:
55
TO ANY ADDRESS
WRITE LAST BYTE
TO
LAST ADDRESS
ADDRESS:
WRITE DATA:
ADDRESS:
0AAA
20
1555
Figure 10. Write Sequence for Activating Software
Data Protection
Figure 11. Write Sequence for Deactivating
Software Data Protection
14. 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.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| CAT28LV65WI-25 | 制造商:Catalyst Semiconductor 功能描述: |
| CAT28LV65WI-25T | 功能描述:电可擦除可编程只读存储器 64K-Bit CMOS PARA 电可擦除可编程只读存储器 RoHS:否 制造商:Atmel 存储容量:2 Kbit 组织:256 B x 8 数据保留:100 yr 最大时钟频率:1000 KHz 最大工作电流:6 uA 工作电源电压:1.7 V to 5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 |
| CAT28LV65XI-15 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Catalyst Semiconductor 功能描述: |
| CAT30/41316L | 制造商:MISCELLANEOUS 功能描述: |
| CAT-3000-01 | 制造商:Samtec Inc 功能描述:CAT - Bulk |
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