EEPROM Memory | CAT1027

EEPROM Serial 2-Kb CPU Supervisor

Obsolete

Datasheet

Products

Overview

The CAT1027 is a complete memory and supervisory solution for microcontroller-based systems. A EEPROM Serial 2-Kb CPU Supervisor and a system power supervisor with brown-out protection are integrated together in low power CMOS technology. Memory interface is via a 400 kHz I²C bus.
The CAT1027 provides a precision VCC sense circuit with five reset threshold voltage options that support 5.0 V, 3.3 V and 3.0 V systems. The power supply monitor and reset circuit protects memory and systems controllers during power up/down and against brownout conditions. If power supply voltages are out of tolerance reset signals become active preventing the system microcontroller, ASIC, or peripherals from operating.
CAT1027 has only a RESET output. In addition, the RESET pin can be used as an input for push-button manual reset capability.
The CAT1027 provides an auxiliary voltage sensor input, VSENSE, which is used to monitor a second system supply. The auxiliary high impedance comparator drives the open drain output, VLOW, whenever the sense voltage is below 1.25 V threshold.
The CAT1027 is designed with a 1.6 second watchdog timer circuit that resets a system to a known state if software or a hardware glitch halts or 'hangs' the system. The CAT1027 features a watchdog timer interrupt input, WDI.
The on-chip 2 k-bit EEPROM memory features a 16-byte page. In addition, hardware data protection is provided by a VCC sense circuit that prevents writes to memory whenever VCC falls below the reset threshold or until VCC reaches the reset threshold during power up.
Available packages include an 8-pin DIP, 8-pin SOIC, 8-pin TSSOP, 8-pin TDFN and 8-pin MSOP. The TDFN package thickness is 0.8 mm maximum. TDFN footprint is 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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Product services, tools and other useful resources related to CAT1027

CAD Model

CAD Model

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CAD Models

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Container Qty.

ON Target

Type

Density

Organization

Data Transmission Standard

fcycle Max (kHz)

tACC Max ns

VCC Min (V)

VCC Max (V)

Vio Ref (V)

Istandby Max (µA)

Iact Max (mA)

T Min (°C)

T Max (°C)

Endurance (Write cycles)

Specific Features

Reference Price

CAT1027WI-25-GT3

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Obsolete

CAD Model

Pb

A

H

P

SOIC-8

751BD

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

Loading...

Obsolete

CAD Model

Pb

A

H

P

SOIC-8

751BD

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

Loading...

Obsolete

CAD Model

Pb

A

H

P

SOIC-8

751BD

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

751BD

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

751BD

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

948AL

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

948AL

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

948AL

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

948AL

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

948AL

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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Reliability Data

Die Related Summary Data

Device: CAT1027WI-25-GT3

Equivalent to wafer fab process: CMOS SUB

Product Technology

Product Technology

Equivalent Device-Hours

MTBF/MTTF in Hours

FITS

CMOS SUB

2

920154574

More Details

Re-calculate Data

Data is based on the following assumptions.

Note: The temperature and confidence level may be adjusted to your requirements.

Disclaimer: A reliability FIT rate calculated using this tool shall not be used for any functional safety purpose. In case a raw FIT rate needs to be estimated for a component which is targeted to be used in a safety critical application (i.e. compliant to ISO 26262 standard) it should be calculated according to generic safety standards (IEC62380, IEC61709, SN29500, FIDES, etc.)

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