24LC128T-E/ST

Product Overview

Category

The 24LC128T-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

• Non-volatile: The stored data remains even when power is removed.
• Electrically erasable: Data can be erased and reprogrammed electronically.
• High storage capacity: The 24LC128T-E/ST has a capacity of 128 kilobits (16 kilobytes).
• Low power consumption: It operates at low voltage and consumes minimal power.
• I2C interface: It uses the Inter-Integrated Circuit (I2C) protocol for communication.

Package

The 24LC128T-E/ST is available in a small surface mount package (ST) with eight pins.

Essence

The essence of this chip lies in its ability to provide reliable and non-volatile data storage in a compact form factor.

Packaging/Quantity

The 24LC128T-E/ST is typically sold in reels or tubes, with a quantity of 250 units per reel/tube.

Specifications

• Memory Capacity: 128 kilobits (16 kilobytes)
• Operating Voltage: 1.7V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• Write Time: 5 ms (maximum)
• Data Retention: 200 years (minimum)

Pin Configuration

The 24LC128T-E/ST has eight pins arranged as follows:

```

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| | | U | |___________|

Pin Configuration:

 1  2  3  4

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| | | 8 7 6 5| |___________| ```

1. VCC: Power supply voltage
2. SDA: Serial data input/output pin
3. SCL: Serial clock input pin
4. WP: Write-protect pin
5. NC: No connection
6. GND: Ground
7. A0: Chip address selection bit 0
8. A1: Chip address selection bit 1

Functional Features

• Random access: Allows reading and writing of individual memory locations.
• Page write mode: Enables faster writing of multiple bytes at once.
• Software write protection: The WP pin can be used to protect the memory from accidental writes.
• Sequential read: Supports sequential reading of multiple memory locations.

Advantages and Disadvantages

Advantages

• Non-volatile storage: Data remains intact even during power loss.
• Compact form factor: Small package size allows for integration in space-constrained designs.
• Low power consumption: Ideal for battery-powered devices.
• High data retention: Ensures long-term reliability of stored information.

Disadvantages

• Limited storage capacity: 16 kilobytes may not be sufficient for certain applications requiring larger memory.
• Slower write speed compared to other memory technologies.
• Limited endurance: EEPROMs have a finite number of erase/write cycles before failure.

Working Principles

The 24LC128T-E/ST utilizes electrically isolated floating gate transistors to store data. When a byte is written, an electrical charge is trapped in the floating gate, altering the transistor's behavior. This charge can be removed by applying a high voltage, allowing the byte to be erased and reprogrammed.

Detailed Application Field Plans

The 24LC128T-E/ST finds applications in various fields, including:

1. Embedded Systems: Used for storing configuration data, firmware updates, and user settings in microcontroller-based systems.
2. Industrial Automation: Enables storage of calibration data, sensor readings, and system parameters in industrial control systems.
3. Automotive Electronics: Utilized for storing vehicle-specific data, such as mileage, fault codes, and user preferences.
4. Consumer Electronics: Integrated into devices like smart TVs, set-top boxes, and gaming consoles for storing user profiles, preferences, and application data.

Detailed and Complete Alternative Models

• 24LC256: Offers double the storage capacity (256 kilobits) compared to the 24LC128T-E/ST.
• 24LC512: Provides four times the storage capacity (512 kilobits) compared to the 24LC128T-E/ST.
• 24LC1025: Offers eight times the storage capacity (1024 kilobits) compared to the 24LC128T-E/ST.

These alternative models provide increased memory capacity for applications requiring larger storage capabilities.

In conclusion, the 24LC128T-E/ST