AT24HC02B-PU

Product Overview

Category

AT24HC02B-PU belongs to the category of electrically erasable programmable read-only memory (EEPROM) chips.

Use

The AT24HC02B-PU chip is primarily used for non-volatile data storage in various electronic devices. It allows for easy reading and writing of data, even when power is removed.

Characteristics

• Non-volatile: Data stored in the AT24HC02B-PU chip remains intact even when power is disconnected.
• Electrically erasable: The chip can be erased and reprogrammed electronically, eliminating the need for physical removal.
• High capacity: The AT24HC02B-PU has a storage capacity of 2 kilobits (256 bytes).
• Low power consumption: The chip operates on low power, making it suitable for battery-powered devices.

Package

The AT24HC02B-PU chip is available in an 8-pin plastic dual in-line package (DIP).

Essence

The essence of the AT24HC02B-PU chip lies in its ability to store and retrieve data reliably, even in the absence of power. This makes it an essential component in many electronic devices that require non-volatile memory.

Packaging/Quantity

The AT24HC02B-PU chip is typically packaged in reels or tubes, with each reel or tube containing a specific quantity of chips. The exact packaging and quantity may vary depending on the manufacturer.

Specifications

• Memory capacity: 2 kilobits (256 bytes)
• Supply 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

The AT24HC02B-PU chip has the following pin configuration:

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

Functional Features

• Random access: The AT24HC02B-PU chip allows for random access to any memory location, enabling efficient data retrieval.
• I2C interface: The chip utilizes the I2C (Inter-Integrated Circuit) protocol for communication with other devices, ensuring compatibility and ease of integration.
• Hardware write protection: The WP pin can be used to protect the stored data from accidental overwriting.
• Software write protection: The chip supports software write protection, allowing specific memory areas to be locked to prevent modification.

Advantages and Disadvantages

Advantages

• Non-volatile storage: Data remains intact even during power loss or device shutdown.
• High endurance: The chip can withstand a large number of write cycles, ensuring long-term reliability.
• Compact size: The small form factor of the AT24HC02B-PU chip makes it suitable for space-constrained applications.
• Low power consumption: The chip operates on low power, extending battery life in portable devices.

Disadvantages

• Limited storage capacity: With a capacity of 2 kilobits, the AT24HC02B-PU may not be sufficient for applications requiring larger amounts of data storage.
• Relatively slow write speed: Writing data to the chip may take longer compared to other memory technologies.

Working Principles

The AT24HC02B-PU chip utilizes EEPROM technology to store and retrieve data. It consists of an array of memory cells that can be individually addressed for read and write operations. The chip communicates with the microcontroller or other devices using the I2C protocol, allowing for easy integration into various systems.

Detailed Application Field Plans

The AT24HC02B-PU chip finds applications in a wide range of electronic devices, including but not limited to: - Smartphones and tablets - Digital cameras - Automotive electronics - Industrial control systems - Medical devices - Consumer electronics

In these applications, the chip is used for storing configuration data, user settings, calibration values, and other non-volatile information.

Detailed and Complete Alternative Models

There are several alternative models available that offer similar functionality to the AT24HC02B-PU chip. Some notable alternatives include: - AT24C02: This chip has the same capacity as the AT24HC02B-PU but operates at a lower voltage range. - AT24HC04B: With double the capacity of the AT24HC02B-PU, this chip provides more storage space. - AT25020A: This chip offers a higher capacity of 8 kilobits (1024 bytes) while maintaining compatibility with the I2