AT24C21-10SI-2.5

Product Overview

Category

AT24C21-10SI-2.5 belongs to the category of serial EEPROM (Electrically Erasable Programmable Read-Only Memory) integrated circuits.

Use

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

Characteristics

• Serial interface: AT24C21-10SI-2.5 utilizes a two-wire I2C (Inter-Integrated Circuit) serial interface, allowing for easy integration into existing systems.
• Storage capacity: It has a storage capacity of 2,048 bits (256 bytes), providing ample space for storing data.
• Low power consumption: The device operates at low power, making it suitable for battery-powered applications.
• High reliability: AT24C21-10SI-2.5 offers high endurance and data retention, ensuring reliable performance over an extended period.
• Wide voltage range: It can operate within a voltage range of 1.7V to 5.5V, making it compatible with various power supply configurations.

Package and Quantity

AT24C21-10SI-2.5 is available in an 8-pin SOIC (Small Outline Integrated Circuit) package. It is typically sold in reels containing a quantity of 2,500 units per reel.

Specifications

• Operating voltage: 1.7V to 5.5V
• Maximum clock frequency: 400 kHz
• Write cycle time: 10 ms (maximum)
• Data retention: 100 years (minimum)
• Endurance: 1 million write cycles (minimum)

Pin Configuration

The pin configuration of AT24C21-10SI-2.5 is as follows:

| Pin Name | Function | |----------|----------| | 1 | A0 | | 2 | A1 | | 3 | A2 | | 4 | GND | | 5 | SDA | | 6 | SCL | | 7 | WP | | 8 | VCC |

Functional Features

• Byte-level read and write operations: AT24C21-10SI-2.5 allows for individual byte-level read and write operations, providing flexibility in data manipulation.
• Page write mode: The device supports page write mode, enabling the simultaneous programming of multiple bytes within a single write operation.
• Software write protection: It offers software write protection by utilizing the Write Protect (WP) pin, preventing accidental modification of stored data.
• Sequential read mode: AT24C21-10SI-2.5 supports sequential read mode, allowing for efficient retrieval of consecutive data bytes.

Advantages and Disadvantages

Advantages

• Compact package size enables easy integration into space-constrained designs.
• Low power consumption makes it suitable for battery-powered applications.
• High reliability ensures data integrity over an extended period.
• Wide voltage range compatibility enhances versatility in various electronic systems.

Disadvantages

• Limited storage capacity compared to larger EEPROM devices.
• Relatively slower write cycle time may impact performance in time-sensitive applications.

Working Principles

AT24C21-10SI-2.5 operates based on the principles of electrically erasable programmable read-only memory. It utilizes a combination of floating gate transistors and charge storage mechanisms to store and retrieve data. The I2C serial interface facilitates communication between the device and the host system, enabling seamless data transfer.

Detailed Application Field Plans

AT24C21-10SI-2.5 finds application in various fields, including but not limited to: - Embedded systems: Used for storing configuration data, calibration values, and firmware updates in microcontroller-based systems. - Industrial automation: Employed for data logging, parameter storage, and device identification purposes in industrial control systems. - Consumer electronics: Integrated into devices like smart TVs, set-top boxes, and audio equipment for storing user preferences, settings, and usage history.

Detailed Alternative Models

Several alternative models with similar functionality to AT24C21-10SI-2.5 are available in the market. Some notable alternatives include: - AT24C01A: 1,024-bit (128-byte) capacity EEPROM with similar specifications and package options. - AT24C32: 32,768-bit (4-kilobyte) capacity EEPROM offering increased storage space. - AT24CM02: 2,048-bit (256-byte) capacity EEPROM with additional features like a unique serial number and extra write protection options.

In conclusion, AT24C21-10SI-2.5 is a serial EEPROM integrated circuit that provides reliable non-volatile storage for various electronic devices. Its compact size, low power consumption, and wide voltage range compatibility make