24LC128-E/ST

Product Overview

Category

The 24LC128-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 24LC128-E/ST can be erased and reprogrammed electronically, making it convenient for updating stored data.
• Non-volatile: The chip retains its stored data even when power is removed.
• High capacity: With a storage capacity of 128 kilobits (16 kilobytes), it offers ample space for storing critical information.
• Low power consumption: The chip 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 24LC128-E/ST is available in an 8-pin SOIC (Small Outline Integrated Circuit) package.

Essence

The essence of the 24LC128-E/ST lies in its ability to provide reliable and non-volatile data storage in a compact form factor.

Packaging/Quantity

This chip is typically sold in reels or tubes, with each reel containing a specific quantity of chips. The exact packaging and quantity may vary depending on the supplier.

Specifications

• Storage Capacity: 128 kilobits (16 kilobytes)
• Operating Voltage: 1.7V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• Write Endurance: 1,000,000 cycles
• Data Retention: 200 years

Detailed Pin Configuration

The 24LC128-E/ST features the following pin configuration:

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. VSS: Ground
6. NC: No connection
7. NC: No connection
8. VCC: Power supply voltage

Functional Features

• Random access: The chip allows random access to any memory location, enabling efficient data retrieval.
• Byte-level read and write operations: 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) allows users to protect the stored data from accidental overwriting.
• Self-timed programming cycle: The chip automatically manages the timing of write and erase operations, simplifying the programming process.

Advantages and Disadvantages

Advantages

• High storage capacity
• Low power consumption
• Compact form factor
• Reliable non-volatile data storage
• Easy integration with I2C-based systems

Disadvantages

• Limited write endurance (1,000,000 cycles)
• Relatively higher cost compared to other non-volatile memory options

Working Principles

The 24LC128-E/ST utilizes a combination of electrically erasable floating-gate transistors and control circuitry to store and retrieve data. When data is written, an electrical charge is applied to specific memory cells, altering their state. To erase data, the charge is removed from the corresponding cells. The chip's control circuitry manages the read, write, and erase operations, ensuring reliable data storage and retrieval.

Detailed Application Field Plans

The 24LC128-E/ST finds applications in various fields, including: 1. Embedded systems: Used for storing firmware, configuration data, and calibration parameters in microcontroller-based systems. 2. Automotive electronics: Employed for storing critical information like vehicle identification numbers (VINs), mileage, and fault codes. 3. Industrial automation: Utilized for storing configuration settings, sensor calibration data, and production logs in industrial control systems. 4. Consumer electronics: Integrated into devices like smart TVs, set-top boxes, and gaming consoles to store user preferences, channel lists, and game progress.

Detailed and Complete Alternative Models

1. 24LC256: A higher-capacity EEPROM chip with a storage capacity of 256 kilobits (32 kilobytes).
2. 24LC64: A lower-capacity EEPROM chip with a storage capacity of 64 kilobits (8 kilobytes).
3. AT24C512: An alternative EEPROM chip from Atmel with a storage capacity of 512 kilobits (64 kilobytes).

These alternative models offer different storage capacities to suit specific application requirements.

In conclusion, the 24LC128-E/ST is a versatile EEPROM chip that provides reliable non-volatile data storage in various electronic devices. With its high capacity