AT24C256W-10SI

Product Overview

Category

AT24C256W-10SI belongs to the category of electrically erasable programmable read-only memory (EEPROM) chips.

Use

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

Characteristics

• High storage capacity: The AT24C256W-10SI has a storage capacity of 256 kilobits (32 kilobytes), allowing it to store a significant amount of data.
• Electrically erasable: Unlike traditional ROM chips, this EEPROM chip can be erased and reprogrammed electronically, making it more flexible and convenient.
• Low power consumption: The chip operates at low power levels, making it suitable for battery-powered devices.
• Wide operating voltage range: It can operate within a voltage range of 1.7V to 5.5V, providing compatibility with various systems.
• I2C interface: The AT24C256W-10SI communicates using the I2C protocol, enabling easy integration into existing systems.

Package and Quantity

The AT24C256W-10SI is available in a small surface-mount package, known as SOIC-8. It is supplied in tape and reel packaging, with a quantity of 2500 units per reel.

Specifications

• Storage Capacity: 256 kilobits (32 kilobytes)
• Operating Voltage Range: 1.7V to 5.5V
• Interface: I2C
• Maximum Clock Frequency: 1 MHz
• Write Cycle Time: 5 ms (maximum)
• Data Retention: 100 years (minimum)
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The AT24C256W-10SI chip has 8 pins, which are assigned specific functions as follows:

1. A0: Address Input
2. A1: Address Input
3. A2: Address Input
4. GND: Ground
5. SDA: Serial Data Input/Output
6. SCL: Serial Clock Input
7. WP: Write Protect
8. VCC: Power Supply

Functional Features

• Random Access: The chip allows random access to any memory location, facilitating efficient data retrieval and modification.
• Byte-Level Read/Write: It supports byte-level read and write operations, enabling precise data manipulation.
• Hardware Write Protection: The WP pin can be used to protect the stored data from accidental overwriting by disabling write operations.
• Page Write Mode: This mode allows multiple bytes to be written in a single operation, enhancing write efficiency.

Advantages and Disadvantages

Advantages

• High storage capacity for extensive data storage requirements.
• Electrically erasable and reprogrammable, providing flexibility.
• Low power consumption, suitable for battery-powered devices.
• Wide operating voltage range for compatibility with various systems.
• I2C interface for easy integration into existing systems.

Disadvantages

• Relatively slower write cycle time compared to other memory technologies.
• Limited endurance, with a finite number of write cycles before failure.

Working Principles

The AT24C256W-10SI utilizes EEPROM technology, which stores data using electrically isolated floating-gate transistors. These transistors can be programmed or erased by applying appropriate voltage levels to specific memory cells. The I2C interface facilitates communication between the chip and the controlling device, allowing data transfer and control signals.

Detailed Application Field Plans

The AT24C256W-10SI finds applications in various fields, including: - Embedded systems: Used for storing configuration data, firmware, and calibration parameters. - Automotive electronics: Employed in vehicle control units for data storage and retrieval. - Industrial automation: Utilized in programmable logic controllers (PLCs) for storing program code and system parameters. - Consumer electronics: Integrated into devices like smart TVs, set-top boxes, and gaming consoles for data storage purposes.

Detailed and Complete Alternative Models

1. AT24C01A: 1 kilobit (128 bytes) EEPROM chip with similar features but lower storage capacity.
2. AT24C512C: 512 kilobit (64 kilobytes) EEPROM chip with higher storage capacity.
3. AT24CM02: 2 megabit (256 kilobytes) EEPROM chip with double the storage capacity of AT24C256W-10SI.

These alternative models provide options with varying storage capacities to suit different application requirements.

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