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EEPROM Memory | CAT1027
概览
CAT1027 是一款用于基于微控制器的系统的完整内存和监督方案。EEPROM 串行 2-Kb CPU 监督器和系统电源监督器带有欠电压保护，采用低功耗 CMOS 工艺进行集成。内存通过 400 kHz I²C 总线接口。CAT1027 提供精确的 VCC 感应电路，带有五个重置阈值电压选项，支持 5.0 V、3.3 V 和 3.0 V 系统。该电源监控电路保护内存和系统控制器，并在电源通电/关断期间以及针对欠电压情况对其进行重置。如果电源电压超出容差范围，重置信号则变为有效状态，阻止系统微控制器、ASIC 或外围设备运行。CAT1027 只有一个重置输出。另外，重置引脚可用作按钮手动重置能力的输入。CAT1027 提供辅助电压感应器输入 VSENSE，用于监控第二个系统电源。每当感应电压低于阈值 1.25 V 时，辅助高阻抗比较器即驱动开漏输出 VLOW。CAT1027 带有一个 1.6 秒监督计时器电路，如果软件或硬件故障暂停或“挂起”系统，则将系统重置为某个已知状态。CAT1027 具有监督计时器中断输入 WDI。该片上 2 kb EEPROM 内存具有 16 字节页。另外，硬件数据保护由 VCC 感应电路提供，在 VCC 降至重置阈值以下或 VCC 在通电期间尚未达到重置阈值之前阻止写入内存。可采用 8 引脚 DIP、8 引脚 SOIC、8 引脚 TSSOP、8 引脚 TDFN 和 8 引脚 MSOP。TDFN 封装厚度最大为 0.8 mm。TDFN 占位为 3x3 mm。
- Industrial control
- Medical systems
- Printers
- Mass storage
- Precision VCC power supply voltage supervisor
5.0 V, 3.3 V and 3.0 V systems
Five threshold voltage options - Additional voltage monitoring
— Externally adjustable down to 1.25 V - Watchdog timer
- Active high or low reset
— Valid reset guaranteed to VCC = 1 V - 400 kHz I²C bus
- 3.0 V to 5.5 V operation
- Low power CMOS technology
- 16-Byte page write buffer
- Built-in inadvertent write protection
- 1,000,000 Program/Erase cycles
- Manual reset capability
- 100 year data retention
- 8-pin DIP, SOIC, TSSOP, MSOP or TDFN
(3 x 3 mm foot-print) packages
— TDFN max height is 0.8mm - Industrial and extended temperature ranges
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产品
CAT1027WI-25-GT3
Obsolete
Pb
A
H
P
SOIC-8
1
260
REEL
3000
N
Serial
2 kb
256 x 8
I2C
400
900
2.7
5.5
-
60
3
-40
85
-
-
Price N/A
More Details
CAT1027WI-28-GT3
Obsolete
Pb
A
H
P
SOIC-8
1
260
REEL
3000
N
Serial
2 kb
256 x 8
I2C
400
900
2.7
5.5
-
60
3
-40
85
-
-
Price N/A
More Details
CAT1027WI-30-GT3
Obsolete
Pb
A
H
P
SOIC-8
1
260
REEL
3000
N
Serial
2 kb
256 x 8
I2C
400
900
2.7
5.5
-
60
3
-40
85
-
-
Price N/A
More Details
CAT1027WI-42-GT3
Obsolete
Pb
A
H
P
SOIC-8
1
260
REEL
3000
N
Serial
2 kb
256 x 8
I2C
400
900
2.7
5.5
-
60
3
-40
85
-
-
Price N/A
More Details
CAT1027WI-45-GT3
Obsolete
Pb
A
H
P
SOIC-8
1
260
REEL
3000
N
Serial
2 kb
256 x 8
I2C
400
900
2.7
5.5
-
60
3
-40
85
-
-
Price N/A
More Details
CAT1027YI-25-GT3
Obsolete
Pb
A
H
P
TSSOP-8
1
260
REEL
3000
N
Serial
2 kb
256 x 8
I2C
400
900
2.7
5.5
-
60
3
-40
85
-
-
Price N/A
More Details
CAT1027YI-28-GT3
Obsolete
Pb
A
H
P
TSSOP-8
1
260
REEL
3000
N
Serial
2 kb
256 x 8
I2C
400
900
2.7
5.5
-
60
3
-40
85
-
-
Price N/A
More Details
CAT1027YI-30-GT3
Obsolete
Pb
A
H
P
TSSOP-8
1
260
REEL
3000
N
Serial
2 kb
256 x 8
I2C
400
900
2.7
5.5
-
60
3
-40
85
-
-
Price N/A
More Details
CAT1027YI-42-GT3
Obsolete
Pb
A
H
P
TSSOP-8
1
260
REEL
3000
N
Serial
2 kb
256 x 8
I2C
400
900
2.7
5.5
-
60
3
-40
85
-
-
Price N/A
More Details
CAT1027YI-45-GT3
Obsolete
Pb
A
H
P
TSSOP-8
1
260
REEL
3000
N
Serial
2 kb
256 x 8
I2C
400
900
2.7
5.5
-
60
3
-40
85
-
-
Price N/A
More Details
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