AT24HC02BN-SH-B

Product Overview

Category

AT24HC02BN-SH-B 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 stored data can be erased and reprogrammed electronically.
• Non-volatile: The data remains intact even when power is removed.
• High capacity: The AT24HC02BN-SH-B has a storage capacity of 2 kilobits (256 bytes).
• Low power consumption: It operates at low voltage and consumes minimal power.
• High reliability: The chip offers excellent data retention and endurance.

Package

The AT24HC02BN-SH-B comes in a small outline package (SOP) with eight pins.

Essence

This EEPROM chip allows for reliable and flexible data storage in electronic devices, ensuring that critical information is preserved even during power cycles or system failures.

Packaging/Quantity

The AT24HC02BN-SH-B is typically packaged in reels or tubes, with a quantity of 2500 units per reel/tube.

Specifications

• Memory capacity: 2 kilobits (256 bytes)
• Supply voltage: 1.7V to 5.5V
• Operating temperature range: -40°C to +85°C
• Write cycle endurance: 1 million cycles
• Data retention: 100 years

Pin Configuration

The AT24HC02BN-SH-B chip has the following pin configuration:

```

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| | | 1 8 | | | | 2 7 | | | | 3 6 | | | | 4 5 | |___________| ```

1. A0: Address input pin 0
2. A1: Address input pin 1
3. GND: Ground
4. SDA: Serial data input/output
5. WP: Write protect
6. VCC: Supply voltage
7. SCL: Serial clock
8. NC: No connection

Functional Features

• High-speed data transfer: The AT24HC02BN-SH-B supports I2C communication protocol, enabling fast and efficient data transfer.
• Hardware write protection: The WP pin allows for hardware-level write protection, preventing accidental modification of stored data.
• Sequential read operation: The chip supports sequential read operations, allowing for easy retrieval of consecutive memory locations.

Advantages and Disadvantages

Advantages

• Compact size and low power consumption make it suitable for portable devices.
• High reliability ensures data integrity in critical applications.
• Wide operating voltage range allows compatibility with various systems.
• Hardware write protection enhances data security.

Disadvantages

• Limited storage capacity compared to other EEPROM chips.
• Relatively higher cost per kilobit compared to larger capacity alternatives.

Working Principles

The AT24HC02BN-SH-B utilizes electrically controlled floating gate transistors to store and retrieve data. When programming, a high voltage is applied to the gate, trapping electrons in the floating gate, representing a logical "1." Erasing is achieved by applying a high voltage that removes the trapped electrons, resetting the cell to a logical "0." The stored data can be read by sensing the transistor's conductivity.

Detailed Application Field Plans

The AT24HC02BN-SH-B finds application in various fields, including:

1. Microcontrollers: Used for storing configuration settings, calibration data, and firmware updates.
2. Automotive electronics: Used for storing vehicle-specific data, such as mileage, service history, and user preferences.
3. Industrial control systems: Used for storing critical parameters, calibration data, and system configurations.
4. Consumer electronics: Used in devices like smart TVs, set-top boxes, and audio equipment for storing user preferences and settings.

Detailed and Complete Alternative Models

1. AT24HC04BN-SH-B: Similar to AT24HC02BN-SH-B but with double the storage capacity (4 kilobits).
2. AT24HC08BN-SH-B: EEPROM chip with 8 kilobits of storage capacity.
3. AT24HC16BN-SH-B: EEPROM chip with 16 kilobits of storage capacity.

These alternative models offer increased storage capacity while maintaining similar characteristics and functionality to the AT24HC02BN-SH-B.

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