24LC32A-E/ST

Product Overview

Category

The 24LC32A-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 24LC32A-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 storage capacity: This model has a storage capacity of 32 kilobits (4 kilobytes).
• 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 24LC32A-E/ST is available in an 8-pin SOIC (Small Outline Integrated Circuit) package.

Essence

The essence of the 24LC32A-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: 32 kilobits (4 kilobytes)
• Operating Voltage: 1.7V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• Write Cycle Endurance: 1 million cycles
• Data Retention: Up to 200 years

Detailed Pin Configuration

The 24LC32A-E/ST features the following pin configuration:

1. VSS: Ground
2. SDA: Serial Data Input/Output
3. SCL: Serial Clock Input
4. WP: Write Protect (optional)
5. VCC: Power Supply
6. A0: Chip Address Bit 0
7. A1: Chip Address Bit 1
8. A2: Chip Address Bit 2

Functional Features

• Random access: The chip allows for random access to any memory location, enabling efficient data retrieval.
• Byte-level read and write operations: It supports individual byte-level read and write operations, providing flexibility in data manipulation.
• Hardware write protection: The optional Write Protect (WP) pin can be used to protect the stored data from accidental modification.
• Sequential read operation: The chip supports sequential read operations, allowing for faster data retrieval.

Advantages and Disadvantages

Advantages

• Non-volatile storage: The chip retains data even without power, ensuring data integrity.
• Compact form factor: The small package size makes it suitable for space-constrained applications.
• Low power consumption: The chip operates on low power, extending battery life in portable devices.
• High endurance: With a write cycle endurance of 1 million cycles, it offers long-lasting performance.

Disadvantages

• Limited storage capacity: The 24LC32A-E/ST has a maximum storage capacity of 32 kilobits, which may not be sufficient for certain applications requiring larger memory sizes.
• Relatively slow write speed: Compared to other memory technologies, EEPROMs generally have slower write speeds.

Working Principles

The 24LC32A-E/ST utilizes an array of floating-gate transistors to store 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 sending appropriate commands through the I2C interface.

Detailed Application Field Plans

The 24LC32A-E/ST finds applications in various fields, including:

1. Embedded systems: It is commonly used in microcontroller-based systems for storing configuration data, firmware updates, and user settings.
2. Industrial automation: The chip can be utilized in industrial control systems for storing calibration data, production parameters, and event logs.
3. Automotive electronics: It is employed in automotive applications for storing vehicle-specific data, such as mileage, fault codes, and user preferences.
4. Consumer electronics: The 24LC32A-E/ST is found in devices like smart TVs, set-top boxes, and audio equipment for storing user profiles, channel lists, and system configurations.

Detailed and Complete Alternative Models

• 24LC64: This model offers double the storage capacity of the 24LC32A-E/ST, with 64 kilobits (8 kilobytes) of memory.
• 24LC128: With a storage capacity of 128 kilobits