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参数资料
| 型号： | CAT28C512GI12 |
| 厂商： | ON Semiconductor |
| 文件页数： | 9/12页 |
| 文件大小： | 0K |
| 描述： | IC EEPROM 512KBIT 120NS 32PLCC |
| 产品变化通告： | Product Obsolescence 05/Oct/2010 |
| 标准包装： | 32 |
| 格式 - 存储器： | EEPROMs - 并行 |
| 存储器类型： | EEPROM |
| 存储容量： | 512K (64K x 8) |
| 速度： | 120ns |
| 接口： | 并联 |
| 电源电压： | 4.5 V ~ 5.5 V |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 32-LCC（J 形引线） |
| 供应商设备封装： | 32-PLCC（11.43x13.97） |
| 包装： | 管件 |
| 其它名称： | CAT28C512GI-12 CAT28C512GI-12-ND |
CAT28C512/513
HARDWARE DATA PROTECTION
The following is a list of hardware data protection fea-
tures that are incorporated into the CAT28C512/513.
(1) V CC sense provides for write protection when V CC
falls below 3.5V min.
(2) A power on delay mechanism, t INIT (see AC charac-
teristics), provides a 5 to 10 ms delay before a write
sequence, after V CC has reached 3.5V min.
(3) Write inhibit is activated by holding any one of OE
low, CE high or WE high.
Figure 9. Write Sequence for Activating Software
Data Protection
(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 CAT28C512/513 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
CAT28C512/513 is in the standard operating mode).
Figure 10. Write Sequence for Deactivating
Software Data Protection
WRITE DATA:
ADDRESS:
WRITE DATA:
ADDRESS:
WRITE DATA:
ADDRESS:
AA
5555
55
2AAA
A0
5555
WRITE DATA:
ADDRESS:
WRITE DATA:
ADDRESS:
WRITE DATA:
ADDRESS:
AA
5555
55
2AAA
80
5555
(1)
SOFTWARE DATA
PROTECTION ACTIVATED
(12)
WRITE DATA:
ADDRESS:
AA
5555
WRITE DATA:
XX
WRITE DATA:
55
TO ANY ADDRESS
WRITE LAST BYTE
TO
LAST ADDRESS
ADDRESS:
W R I T E DATA :
ADDRESS:
2AAA
20
5555
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.
? 2009 SCILLC. All rights reserved.
Characteristics subject to change without notice
9
Doc. No. MD-1007, Rev . I
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相关代理商/技术参数 |
参数描述 |
|---|---|
| CAT28C512GI-12 | 制造商:ON Semiconductor 功能描述:IC EEPROM 512KBIT PARALLEL LCC-32 |
| CAT28C512GI-12T | 功能描述:电可擦除可编程只读存储器 512K-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 |
| CAT28C512GI-15 | 功能描述:电可擦除可编程只读存储器 64K X 8 512K 5V 150 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 |
| CAT28C512GI-15T | 功能描述:电可擦除可编程只读存储器 512K-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 |
| CAT28C512H-12 | 功能描述:电可擦除可编程只读存储器 64K X 8 512K 5V 120 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 |
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