Part Number: CAT24C256WI-GT3

Manufacturer: onsemi

Description: IC EEPROM 256KBIT I2C 1MHZ 8SOIC

Shipped from: Shenzhen/HK Warehouse

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Technical Specifications of CAT24C256WI-GT3

Datasheet  CAT24C256WI-GT3 datasheet
Category Integrated Circuits (ICs)
Family Memory
Manufacturer ON Semiconductor
Packaging Tape & Reel (TR)
Part Status Active
Format – Memory EEPROMs – Serial
Memory Type EEPROM
Memory Size 256K (32K x 8)
Speed 400kHz
Interface I2C, 2-Wire Serial
Voltage – Supply 1.8 V ~ 5.5 V
Operating Temperature -40°C ~ 85°C (TA)
Package / Case 8-SOIC (0.154″, 3.90mm Width)
Supplier Device Package 8-SOIC

CAT24C256WI-GT3 Introduction

The CAT24C256WI-GT3 is an EEPROM memory IC, which stands for “Electrically Erasable Programmable Read-Only Memory.” It is a safe way to store data that doesn’t lose power. With a capacity of 256Kbit, it gives electronic devices plenty of room to store important information. This IC is made to store data in a reliable and flexible way in a variety of uses.

Key Features

  • The CAT24C256WI-GT3 is set up on the inside with 32,768 words of 8 bits each, which makes it easy to store and find data.
  • It works with different I2C (Inter-Integrated Circuit) standards, such as Standard (100 kHz), Fast (400 kHz), and Fast-Plus (1 MHz), so it can talk to other devices in different ways.
  • This EEPROM memory IC has a 64-byte page write cache that lets data move quickly and efficiently.
  • It has a Write Protect (WP) pin that can be used to stop write processes. This protects the data and keeps it from being changed by accident.

CAT24C256WI-GT3 Applications

The EEPROM memory IC CAT24C256WI-GT3 is used in a number of electronic products, such as:

  • In consumer goods like TVs, set-top boxes, and audio gear, it can be used to store user preferences, configuration settings, and firmware updates.
  • Industrial automation: The CAT24C256WI-GT3 can be used in industrial control systems and equipment to keep important data like calibration parameters, system configurations, and log files.
  • It is good for apps that need to store data reliably, like storing vehicle settings, sensor calibration data, and event logs.
  • Medical devices: This IC can be used to store patient details, device settings, and calibration information in medical devices.
  • IoT (Internet of Things) devices: The CAT24C256WI-GT3 lets IoT devices store data that doesn’t change when the power goes out. This lets IoT devices do things like identify themselves, calibrate their sensors, and update their software.

The EEPROM memory IC CAT24C256WI-GT3 is a safe and flexible way to store data. With its storage space, support for the I2C protocol, and write protection, it works well for a wide range of uses in different industries.

CAT24C256WI-GT3 Specifications

The CAT24C256WI-GT3 EEPROM memory IC is made to store data in a way that is stable and flexible. Here are the most important points about this IC:

  • Capacity of memory: The CAT24C256WI-GT3 can hold up to 256Kbit of memory. This is the same as 32,768 words, since each word has 8 bits. This large amount of storage space makes it possible to store a lot of info.
  • How to Organise Memory: The CAT24C256WI-GT3 is organised on the inside into 32,768 words, and each word is made up of 8 bits. The way the memory is set up makes it easy to find and access the information saved there.

Protocols that work with I2C: The CAT24C256WI-GT3 is compatible with several I2C (Inter-Integrated Circuit) standards, such as:

● Standard Mode

This mode runs at 100 kHz, so it can be used for normal I2C communication in many different situations.

● Fast Mode

The Fast Mode has a frequency of 400 kHz, which makes it faster than the Standard Mode at moving data. This higher frequency improves speed in applications that need to send and receive data faster.

● Fast-Plus Mode

The Fast-Plus Mode works at a frequency of 1 MHz and lets you send and receive info even faster. This mode is especially useful for apps that need to communicate quickly and process data in real time.

● Page Write Buffer

The 64-byte page write buffer is built into the CAT24C256WI-GT3. This buffer speeds up data flows by letting multiple bytes in a single page be programmed at the same time. This function cuts down on the number of write cycles needed, making data transfers faster and more efficient overall.

The CAT24C256WI-GT3 is a versatile EEPROM memory IC because it has a lot of memory, can handle different I2C protocols, and has a page write buffer. It can be used in apps that need a safe and flexible way to store and send info.

CAT24C256WI-GT3 Typical Applications

The CAT24C256WI-GT3 EEPROM memory IC is used in many different ways in many different businesses. Here are some of the most popular ways to use the CAT24C256WI-GT3:

● Consumer Electronics

The CAT24C256WI-GT3 can be used to store user preferences, configuration settings, and firmware changes in devices like TVs, set-top boxes, and audio gear.

It can store a lot of information because it has a lot of memory. This makes it easy to customise and personalise consumer electronic devices.

● Industrial Automation

The CAT24C256WI-GT3 is a good choice for control systems and tools used in industrial settings. It can hold important information like calibration factors, system settings, and log files.

Because of how reliable and flexible the IC is, important information can be saved safely and easily accessed. This helps industrial automation systems run smoothly.

● Automotive Electronics

The CAT24C256WI-GT3 is perfect for storing car settings, sensor calibration data, event logs, and other important information in automotive applications.

Because the IC can work in a variety of environments and keep data for a long time, it can be used in automotive uses that need reliable and long-lasting data storage.

● Medical Devices

The CAT24C256WI-GT3 can be used in medical equipment to keep important information about patients, device settings, calibration information, and more.

The on-chip ECC (Error Correction Code) feature of the IC makes sure that the data is correct and reliable. This makes it a good choice for medical devices where accurate and reliable data keeping is very important.

● IoT (Internet of Things) Devices

The CAT24C256WI-GT3 lets IoT devices store data that doesn’t change when the power goes out. This makes it possible to do things like identify the device, calibrate the sensors, and update the software.

It works with different I2C protocols, which makes it easy to connect to a wide range of IoT devices and make communication and data transfer more efficient.

The CAT24C256WI-GT3 is a good choice for these applications because it has features and qualities like a large amount of memory, support for different I2C protocols, and a page write buffer. The IC can be used in a wide range of businesses and electronic systems because it is reliable, flexible, and can hold on to data in different environments.


For varied data storage requirements, the CAT24C256WI-GT3 EEPROM memory IC stands out as a dependable and adaptable option. It is well-suited to handle the demands of high-reliability applications that prioritise data integrity thanks to its substantial memory capacity, support for numerous I2C protocols, and on-chip ECC. Designers may assure secure and effective data storage in their electronic systems by integrating the CAT24C256WI-GT3, thus improving the performance and usefulness of their applications.

We suggest getting in touch with ICRFQ, a reputable electronic component distributor in China, to find out more about the CAT24C256WI-GT3 and to place an order for this product. They can give you the knowledge, expertise, and affordable prices you need to get the CAT24C256WI-GT3 and successfully incorporate it into your projects. Don’t pass up the chance to increase the capacity of your data storage with this dependable EEPROM memory IC. To take the next step in optimising your electronic systems, get in touch with ICRFQ right away.

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