24AA256-I/ST

Product Overview

Category

The 24AA256-I/ST 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, embedded systems, and consumer electronics.

Characteristics

• Non-volatile: Retains stored data even when power is removed.
• Electrically erasable: Allows for easy modification of stored data.
• High storage capacity: The 24AA256-I/ST has a capacity of 256 kilobits (32 kilobytes).
• Low power consumption: Designed to operate with minimal power requirements.
• Wide operating voltage range: Can function within a voltage range of 1.7V to 5.5V.
• I2C interface: Utilizes the popular I2C communication protocol for easy integration into existing systems.

Package

The 24AA256-I/ST is available in a small surface-mount package (ST), which facilitates compact designs and efficient PCB space utilization.

Essence

The essence of the 24AA256-I/ST lies in its ability to provide reliable and non-volatile data storage in a compact and low-power package.

Packaging/Quantity

This product is typically supplied in tape and reel packaging, with a quantity of 2500 units per reel.

Specifications

• Memory Capacity: 256 kilobits (32 kilobytes)
• Operating Voltage Range: 1.7V to 5.5V
• Interface: I2C
• Maximum Clock Frequency: 400 kHz
• Write Endurance: 1 million write cycles
• Data Retention: 200 years
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The 24AA256-I/ST features an 8-pin package with the following pin configuration:

1. VCC: Power supply voltage
2. SDA: Serial data input/output for I2C communication
3. SCL: Serial clock input for I2C communication
4. WP: Write protect pin (optional)
5. A0: Address bit 0 (for device addressing)
6. A1: Address bit 1 (for device addressing)
7. A2: Address bit 2 (for device addressing)
8. GND: Ground reference

Functional Features

• Random access: Allows for reading and writing of individual memory locations.
• Byte-level write protection: Provides the ability to protect specific memory areas from being overwritten.
• Software write protection: Can be configured to prevent accidental or unauthorized writes.
• Sequential read operation: Enables efficient retrieval of consecutive memory locations.
• Self-timed programming cycle: Simplifies integration into various systems.

Advantages and Disadvantages

Advantages

• Non-volatile storage: Ensures data integrity even during power loss.
• Compact form factor: Suitable for space-constrained designs.
• Low power consumption: Ideal for battery-powered devices.
• High endurance: Supports frequent write operations without degradation.
• Compatibility: Utilizes the widely adopted I2C interface.

Disadvantages

• Limited storage capacity: May not be sufficient for applications requiring large amounts of data.
• Relatively slower write speed compared to other memory technologies.
• Susceptible to electromagnetic interference (EMI) due to its small package size.

Working Principles

The 24AA256-I/ST utilizes EEPROM technology, which allows for electrically erasing and reprogramming of data. It consists of a grid of memory cells that can be individually addressed and modified. The data is stored in floating-gate transistors, which retain their charge even when power is removed. The I2C interface facilitates communication with the host device, enabling read and write operations.

Detailed Application Field Plans

The 24AA256-I/ST finds applications in various fields, including but not limited to: - Automotive electronics - Industrial automation - Medical devices - Consumer electronics - Internet of Things (IoT) devices - Smart home systems

Detailed and Complete Alternative Models

• 24LC256: Similar EEPROM chip from Microchip Technology Inc.
• AT24C256: Equivalent EEPROM chip from Atmel Corporation.
• M24M02: Alternative EEPROM chip from STMicroelectronics.

These alternative models offer similar functionality and can be considered as substitutes for the 24AA256-I/ST, depending on specific requirements and compatibility considerations.

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