24LC64X-E/ST

Product Overview

Category

The 24LC64X-E/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 24LC64X-E/ST can be erased and reprogrammed electronically, making it convenient for data updates.
• Non-volatile: The stored data remains intact even when power is removed.
• High storage capacity: The chip has a capacity of 64 kilobits (8 kilobytes), allowing for ample data storage.
• Low power consumption: The 24LC64X-E/ST operates on low power, making it suitable for battery-powered devices.
• I2C interface: It utilizes the Inter-Integrated Circuit (I2C) protocol for communication with other devices.

Package

The 24LC64X-E/ST comes in a small surface-mount package (ST) that ensures compactness and ease of integration into electronic circuits.

Essence

The essence of the 24LC64X-E/ST lies in its ability to provide reliable and non-volatile data storage in a compact form factor.

Packaging/Quantity

These chips are 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

• Capacity: 64 kilobits (8 kilobytes)
• Interface: I2C
• 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

Detailed Pin Configuration

The 24LC64X-E/ST chip has a total of 8 pins, each serving a specific purpose:

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, A1, A2: Address selection pins for device addressing
6. GND: Ground reference

Functional Features

• Random access: The chip allows for random access to any memory location, enabling efficient data retrieval.
• Byte-level read/write: Data can be read from or written to the chip at the byte level, providing flexibility in data manipulation.
• Hardware write protection: The optional write protect pin (WP) can be used to prevent accidental writes to the chip, enhancing data security.
• Self-timed programming cycle: The chip automatically manages the timing of write and erase operations, simplifying the programming process.

Advantages and Disadvantages

Advantages

• Compact size and low power consumption make it suitable for various electronic devices.
• High storage capacity allows for ample data storage.
• Electrically erasable nature enables easy data updates.
• Non-volatile characteristic ensures data retention even during power loss.
• I2C interface facilitates communication with other devices.

Disadvantages

• Limited storage capacity compared to other memory technologies.
• Relatively slower write and erase operations compared to some alternatives.
• Vulnerable to electromagnetic interference due to its small package size.

Working Principles

The 24LC64X-E/ST utilizes EEPROM technology, which employs floating-gate transistors to store and retrieve data. When data is written, an electric charge is trapped in the floating gate, altering the transistor's behavior. This change in behavior allows the stored data to be read back accurately. The chip's internal circuitry manages the write, erase, and read operations, ensuring reliable data storage and retrieval.

Detailed Application Field Plans

The 24LC64X-E/ST finds applications in various fields, including:

1. Automotive electronics: Used for storing critical vehicle data, such as mileage, settings, and diagnostic information.
2. Industrial automation: Enables non-volatile storage of configuration parameters, calibration data, and event logs in industrial control systems.
3. Consumer electronics: Utilized in devices like smart TVs, set-top boxes, and gaming consoles for firmware storage and data logging.
4. Medical devices: Stores patient data, device settings, and firmware updates in medical equipment, ensuring data integrity and reliability.
5. Internet of Things (IoT): Supports data storage requirements in IoT devices, such as sensors, actuators, and edge computing devices.

Detailed and Complete Alternative Models

• AT24C64: A similar EEPROM chip manufactured by Atmel Corporation.
• CAT24C64: An alternative EEPROM chip produced by ON Semiconductor.
• M24C64: Another EEPROM chip offered by STMicro