EEPROM 串行 2-Kb CPU 监督器

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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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Reference Price

CAT1027WI-25-GT3

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Obsolete

CAD Model

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

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Obsolete

CAD Model

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

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Obsolete

CAD Model

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

Loading...

Obsolete

CAD Model

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

Loading...

Obsolete

CAD Model

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

Loading...

Obsolete

CAD Model

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

Loading...

Obsolete

CAD Model

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

Loading...

Obsolete

CAD Model

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

Loading...

Obsolete

CAD Model

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

Loading...

Obsolete

CAD Model

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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