24AA256UID-I/ST

The 24AA256UID-I/ST is a 256 Kbit Serial EEPROM with a built-in unique ID for each device. It features a two-wire serial interface and is capable of operation across a broad voltage range. This EEPROM is designed to store and retrieve data in various embedded systems, providing non-volatile memory storage with a unique identification feature.

Pinout

(Note: The pin configuration below is a general representation. Refer to the specific datasheet for precise details.)

• A0, A1, A2: Device address inputs for device addressing
• WP: Write Protect pin for hardware write protection
• VSS: Ground connection
• SCL: Serial Clock input for 2-wire serial interface
• SDA: Serial Data I/O for 2-wire serial interface
• VCC: Positive power supply
• NC: No Connection

Circuit Diagram

Include a circuit diagram illustrating the connections and operation of the 24AA256UID-I/ST EEPROM for a visual representation.

Key Features

• 256 Kbit Capacity: Offers 256 Kbits (32 Kbytes) of EEPROM storage for data retention.
• Unique ID: Each 24AA256UID-I/ST device is pre-programmed with a unique 48-bit serial number, providing a built-in identification feature.
• Two-Wire Serial Interface: Utilizes a simple and efficient 2-wire serial interface for communication with microcontrollers and other devices.
• Wide Voltage Range: Operates within a voltage range of 1.7V to 5.5V, ensuring compatibility with a variety of systems.
• Write Protection: Includes a hardware write-protect pin (WP) for protecting stored data from accidental writes.

Note: For detailed technical specifications, please refer to the 24AA256UID-I/ST datasheet.

Application

• Embedded Systems: Ideal for storing configuration parameters, device IDs, and other critical information in embedded systems.
• Data Logging: Suitable for data logging applications where non-volatile memory storage with unique device identification is required.
• Security Systems: Used in security systems and access control devices to store unique device IDs and access credentials.

Functionality

The 24AA256UID-I/ST Serial EEPROM provides reliable non-volatile memory storage with the added feature of a unique ID for each device. It enables efficient data storage and retrieval in various embedded applications.

Usage Guide

• Device Addressing: Set the device address using the A0, A1, and A2 pins for communication with the microcontroller.
• Serial Interface: Connect the SCL and SDA pins to the microcontroller's I2C interface for serial communication.
• Power Supply: Connect VCC (Pin 8) to the positive supply voltage within the specified voltage range.

Frequently Asked Questions

Q: Can the 24AA256UID-I/ST operate at 3.3V supply voltage?
A: Yes, the 24AA256UID-I/ST is designed to operate within a voltage range of 1.7V to 5.5V, including the common 3.3V supply voltage.

Q: What is the purpose of the unique ID feature?
A: The unique ID feature provides a distinct identification for each device, enabling tracking, authentication, and secure communication in embedded systems.