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24AA02UID-I/SN

MCHP24AA02UID-I/SN

Microchip Technology
EEPROM Memory IC 2Kbit I2C 400 kHz 900 ns 8-SOIC
Active3,334 in stock
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Overview

The 24AA02UID-I/SN is a 2Kbit I2C serial EEPROM from Microchip featuring a factory-programmed, unique 32-bit serial number. This non-volatile memory operates across a wide voltage range of 1.7V to 5.5V, making it suitable for low-voltage battery-powered systems. It provides 256 bytes of storage organized as one block of 256 x 8-bit memory with an 8-byte page write capability.

Why Choose This Part

The integrated 32-bit unique ID eliminates the need for manual serialization during manufacturing, reducing production costs. It features high reliability with over 1 million erase/write cycles and more than 200 years of data retention. The low standby current of 1 uA and operation down to 1.7V make it an excellent choice for ultra-low-power applications.

Applications

Device Identification
Utilizing the preprogrammed 32-bit unique ID to provide a hardware-level serial number for system tracking and inventory management.
Network Node Addressing
Storing MAC addresses or unique node IDs in distributed sensor networks where every device requires a distinct identifier.
Configuration Storage
Saving user settings, calibration constants, or state variables that must persist through power cycles in small-scale embedded designs.
Consumable Authentication
Integrating into peripheral cartridges or accessories to verify genuine hardware via the unique serial number.

Key Specifications

Technology EEPROM
Access Time 900 ns
Memory Size 2Kbit
Memory Type Non-Volatile
Memory Format EEPROM
Mounting Type Surface Mount
Package / Case 8-SOIC (0.154", 3.90mm Width)
Clock Frequency 400 kHz
Memory Interface I2C
Voltage - Supply 1.7V ~ 5.5V
Memory Organization 128 x 8 x 2
Operating Temperature -40degC ~ 85degC (TA)
Supplier Device Package 8-SOIC
Write Cycle Time - Word, Page 5ms

Getting Started

Connect the SCL and SDA pins to your microcontroller's I2C bus with appropriate pull-up resistors, typically 4.7k ohms for 400 kHz operation. The unique ID is located in a specific read-only area accessible via standard I2C read commands as documented in the Microchip datasheet. Use the Microchip MPLAB X IDE and MCC (Melody) to quickly generate I2C driver code for PIC or AVR microcontrollers.

Also Consider

AT24C02C MCHPMicrochip Technology - A standard 2Kbit I2C EEPROM alternative if a unique serial number is not required for the application.

Categories

Memory & Storage > EEPROM Microcontrollers > Microchip IoT & Smart Devices > IoT Security & Crypto