AT24C128BW-SH-B

Product Overview

Category

AT24C128BW-SH-B belongs to the category of EEPROM (Electrically Erasable Programmable Read-Only Memory) 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 and programmable: Allows for easy modification of stored data.
• High storage capacity: The AT24C128BW-SH-B has a capacity of 128 kilobits (16 kilobytes).
• Low power consumption: Operates at low voltage levels, making it suitable for battery-powered devices.

Package

The AT24C128BW-SH-B comes in an industry-standard 8-pin SOIC (Small Outline Integrated Circuit) package.

Essence

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

Packaging/Quantity

The AT24C128BW-SH-B is typically packaged in reels or tubes, with a quantity of 2500 units per reel/tube.

Specifications

• Memory Capacity: 128 kilobits (16 kilobytes)
• Interface: I2C (Inter-Integrated Circuit)
• Operating Voltage: 1.7V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• Write Cycle Endurance: 1 million cycles
• Data Retention: 100 years

Detailed Pin Configuration

The AT24C128BW-SH-B has the following pin configuration:

1. A0: Address Input
2. A1: Address Input
3. A2: Address Input
4. GND: Ground
5. SDA: Serial Data Input/Output
6. SCL: Serial Clock Input
7. WP: Write Protect
8. VCC: Power Supply

Functional Features

• Random Access: Allows for reading and writing data at any memory location.
• Page Write Mode: Enables efficient programming of multiple bytes in a single write operation.
• Software Write Protection: The WP pin can be used to protect the memory from accidental writes.
• Hardware Write Protection: Additional protection against unauthorized writes can be enabled using external circuitry.

Advantages and Disadvantages

Advantages

• High storage capacity for its size
• Low power consumption
• Easy to interface with microcontrollers using the I2C protocol
• Reliable and durable data storage
• Wide operating voltage range

Disadvantages

• Relatively slower write speeds compared to other non-volatile memory technologies
• Limited endurance for write cycles (1 million cycles)

Working Principles

The AT24C128BW-SH-B utilizes electrically isolated floating gate transistors to store data. When a byte of data needs to be written, an electrical charge is applied to the floating gate, altering its threshold voltage. This change in threshold voltage represents the stored data. To read the data, the threshold voltage is measured and interpreted as either a logic high or low.

Detailed Application Field Plans

The AT24C128BW-SH-B finds applications in various fields, including:

1. Embedded Systems: Used for storing configuration settings, calibration data, and firmware updates in microcontroller-based systems.
2. Industrial Automation: Provides non-volatile storage for critical parameters, such as sensor calibration data and system configurations.
3. Automotive Electronics: Utilized for storing vehicle-specific data, such as mileage, service history, and user preferences.
4. Consumer Electronics: Used in devices like smart TVs, set-top boxes, and gaming consoles for storing user preferences, channel lists, and application data.

Detailed and Complete Alternative Models

1. AT24C01A: 1 kilobit (128 bytes) capacity
2. AT24C256C: 256 kilobits (32 kilobytes) capacity
3. AT24CM02: 2 megabits (256 kilobytes) capacity
4. AT24MAC602: 64 kilobits (8 kilobytes) capacity with additional MAC address functionality

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

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