AT24C02B-PU

Product Overview

Category

AT24C02B-PU belongs to the category of electrically erasable programmable read-only memory (EEPROM) chips.

Use

This product is commonly used for non-volatile data storage in various electronic devices such as microcontrollers, computers, and consumer electronics.

Characteristics

• Non-volatile: The stored data remains even when power is removed.
• Electrically erasable: Data can be erased and reprogrammed electronically.
• Low power consumption: Operates on low voltage and consumes minimal power.
• High reliability: Provides reliable data storage with a long lifespan.

Package

AT24C02B-PU is available in an 8-pin DIP (Dual Inline Package) format.

Essence

The essence of AT24C02B-PU lies in its ability to store and retrieve digital information reliably and efficiently.

Packaging/Quantity

This product is typically packaged in reels or tubes, with each reel containing a specific quantity of chips. The exact packaging and quantity may vary depending on the manufacturer.

Specifications

• Memory capacity: 2 kilobits (256 bytes)
• Interface: I2C (Inter-Integrated Circuit)
• Operating voltage: 1.7V to 5.5V
• Operating temperature range: -40°C to +85°C
• Write endurance: 1 million write cycles
• Data retention: 100 years

Detailed Pin Configuration

1. A0: Chip address input pin
2. A1: Chip address input pin
3. A2: Chip address input pin
4. GND: Ground connection
5. SDA: Serial data input/output pin
6. SCL: Serial clock input pin
7. WP: Write protect pin
8. VCC: Power supply voltage

Functional Features

• Random access: Allows reading and writing of data at any memory location.
• Byte-wise operations: Supports individual byte read, write, and erase operations.
• Page write mode: Enables faster data writes by allowing multiple bytes to be written in a single operation.
• Write protection: Provides a write protect pin to prevent accidental modification of stored data.

Advantages and Disadvantages

Advantages

• Compact size and low power consumption make it suitable for portable devices.
• High reliability ensures data integrity even in harsh environments.
• Easy integration with microcontrollers and other electronic systems.
• Cost-effective solution for non-volatile data storage.

Disadvantages

• Limited storage capacity compared to other memory technologies.
• Slower write speeds compared to volatile memory types.
• Susceptible to electromagnetic interference (EMI) due to its small size.

Working Principles

AT24C02B-PU utilizes the I2C interface protocol for communication. It consists of an array of memory cells that can be individually addressed for read or write operations. The data is stored in these cells using electrically controlled floating gate transistors. When a write operation is performed, the data is stored by trapping charges in the floating gate, while erasing is achieved by removing these charges.

Detailed Application Field Plans

AT24C02B-PU finds applications in various fields, including: 1. Embedded systems: Used for storing configuration data, firmware updates, and user settings in microcontroller-based systems. 2. Automotive electronics: Employed for storing critical data such as mileage, vehicle identification numbers, and calibration values. 3. Industrial automation: Utilized for storing parameters, calibration data, and event logs in programmable logic controllers (PLCs). 4. Consumer electronics: Integrated into devices like smart TVs, set-top boxes, and gaming consoles for storing user preferences and system settings.

Detailed and Complete Alternative Models

1. AT24C01A-PU: 1 kilobit EEPROM with similar specifications and package.
2. AT24C04B-PU: 4 kilobit EEPROM with higher storage capacity.
3. AT24C08B-PU: 8 kilobit EEPROM with double the storage capacity of AT24C02B-PU.

These alternative models offer different memory capacities to suit specific application requirements.

In conclusion, AT24C02B-PU is a reliable and versatile EEPROM chip that provides non-volatile data storage in various electronic devices. Its compact size, low power consumption, and high reliability make it an ideal choice for many applications.