CMOS Technology EEPROM with 8K X 8 capacity


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Overview of CAT24C64WI-GT3

The CAT24C64WI-GT3 is a 64Kb I2C Serial EEPROM with a wide voltage range and low power consumption. It is designed to offer non-volatile data storage for various applications, including embedded systems, data logging, and configuration storage.


(Note: The pin configuration below is a general representation. Refer to the specific datasheet for precise details.)

  • A0-A2: Address Inputs
  • VSS: Ground
  • SCL: Serial Clock Input
  • SDA: Serial Data I/O
  • VCC: Power Supply
  • WP: Write Protect
  • VSS: Ground
  • NC: No Connection

Circuit Diagram

Include a circuit diagram illustrating the connections and operation of the CAT24C64WI-GT3 for a visual representation.

Key Features

  • 64Kb Capacity: Offers 64K bits of non-volatile storage space for data retention.
  • I2C Interface: Utilizes the I2C protocol for serial communication with microcontrollers and other devices.
  • Wide Voltage Range: Operates from 1.7V to 5.5V, allowing flexible power supply options.
  • Low Power Consumption: Features low standby and active currents, suitable for power-sensitive applications.
  • Write Protection: Includes a write protect feature to prevent accidental write operations.

Note: For detailed technical specifications, please refer to the CAT24C64WI-GT3 datasheet.


  • Embedded Systems: Ideal for storing configuration data and firmware in embedded systems.
  • Data Logging: Suitable for recording and storing sensor data in data logging applications.
  • Security Systems: Used in security systems for storing encryption keys and access control information.


The CAT24C64WI-GT3 provides reliable non-volatile data storage through I2C communication, making it convenient for applications requiring data retention even when power is removed.

Usage Guide

  • Power Supply: Connect VCC (Pin 5) to the power supply voltage within the specified range.
  • Addressing: Configure the address inputs (A0-A2) for I2C communication with the microcontroller.
  • Write Protection: Use the WP (Write Protect) pin to enable or disable write protection as needed.

Frequently Asked Questions

Q: Can the CAT24C64WI-GT3 operate at lower voltages?
A: Yes, the CAT24C64WI-GT3 can operate at voltages as low as 1.7V, offering flexibility in power supply options.

Q: Is the CAT24C64WI-GT3 suitable for temperature-sensitive applications?
A: The CAT24C64WI-GT3 is designed to operate within specified temperature ranges, making it suitable for temperature-sensitive applications with proper thermal management.


For similar functionalities, consider these alternatives to the CAT24C64WI-GT3:

  • AT24C64: An I2C Serial EEPROM with 64Kb capacity, offering similar functionality to the CAT24C64WI-GT3.
  • 24LC64: This is a serial EEPROM from Microchip with 64Kb storage capacity and I2C interface.


The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.

Status Active Compliance PbAHP
Package Type SOIC-8 Case Outline 751BD
MSL Type 1 MSL Temp (°C) 260
Container Type REEL Container Qty. 3000
ON Target Y Type Serial
Density 64 kb Organization 8k x 8
Data Transmission Standard I2C fcycle Max (kHz) 400
tACC Max ns 400 VCC Min (V) 1.7
VCC Max (V) 5.5 Istandby Max (µA) 1
Iact Max (mA) 1 T Min (°C) -40
T Max (°C) 85 Pricing ($/Unit) $0.1941Sample

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