24LC02BT-I/ST

Product Overview

Category

The 24LC02BT-I/ST 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

• Electrically erasable: The 24LC02BT-I/ST can be erased and reprogrammed electrically, making it convenient for updating stored data.
• Non-volatile: The chip retains its stored data even when power is removed.
• Low power consumption: It operates at low power levels, making it suitable for battery-powered devices.
• High reliability: The 24LC02BT-I/ST offers excellent data retention and endurance characteristics.
• Small form factor: This chip comes in a compact package, allowing for space-efficient integration into electronic devices.

Package and Quantity

The 24LC02BT-I/ST is available in a small Thin Small Outline Package (TSOP), which ensures easy mounting on circuit boards. It is typically sold in reels or tubes containing multiple units.

Specifications

• Memory capacity: 2 kilobits (256 bytes)
• Operating voltage: 1.7V to 5.5V
• Operating temperature range: -40°C to +85°C
• Write endurance: 1 million write cycles
• Data retention: Up to 200 years
• Communication interface: I2C (Inter-Integrated Circuit)

Pin Configuration

The 24LC02BT-I/ST has a total of 8 pins, each serving a specific function:

1. VCC: Power supply input
2. SDA: Serial data line for communication with the host device
3. SCL: Serial clock line for synchronization with the host device
4. WP: Write protect pin for hardware protection of data
5. A0: Address bit 0 for device addressing
6. A1: Address bit 1 for device addressing
7. GND: Ground connection
8. NC: No connection (unused pin)

Functional Features

• Random access: The chip allows for direct read and write operations to specific memory locations.
• Byte-level erasure: Data can be erased and rewritten at the byte level, providing flexibility in data management.
• Hardware write protection: The WP pin can be used to prevent accidental modification of stored data.
• I2C interface: The chip supports the widely-used I2C communication protocol, enabling easy integration into various systems.

Advantages and Disadvantages

Advantages

• Compact size and low power consumption make it suitable for portable devices.
• High reliability ensures long-term data retention.
• Easy integration with existing systems due to I2C compatibility.
• Flexible byte-level erasure allows for efficient data management.

Disadvantages

• Limited storage capacity compared to other memory technologies.
• Slower write speeds compared to some other memory types.
• Vulnerable to electrical noise or interference during data transfer.

Working Principles

The 24LC02BT-I/ST utilizes EEPROM technology, which employs a floating gate transistor structure to store and retrieve data. When data is written, an electric charge is trapped in the floating gate, altering the transistor's behavior. This charge can be removed during the erasing process, allowing the transistor to return to its original state. The stored data can be accessed by applying appropriate voltage levels to the chip's pins.

Application Field Plans

The 24LC02BT-I/ST finds applications in various fields, including: - Embedded systems - Automotive electronics - Industrial control systems - Smart home devices - Wearable technology

Alternative Models

• 24LC01B-I/ST: 1 kilobit (128 bytes) capacity version of the same chip.
• 24LC04BT-I/ST: 4 kilobits (512 bytes) capacity version with similar characteristics.

These alternative models offer different memory capacities to suit specific application requirements while maintaining similar features and compatibility.

In conclusion, the 24LC02BT-I/ST is a compact and reliable EEPROM chip that provides non-volatile data storage for a wide range of electronic devices. Its electrically erasable nature, low power consumption, and I2C interface make it a versatile choice for various applications.