Microchip 24LC1025T-E/SM: A High-Density 1024K I²C Serial EEPROM Solution

The Microchip 24LC1025T-E/SM is a high-density serial EEPROM memory device that provides a robust 1,048,576-bit (1024K) storage capacity organized as 131,072 words of 8 bits each. This makes it an ideal solution for a wide range of applications requiring non-volatile memory for data storage, configuration parameters, and system settings.

A key feature of this EEPROM is its utilization of the ubiquitous I²C (Inter-Integrated Circuit) serial interface. This two-wire interface, comprising Serial Data (SDA) and Serial Clock (SCL) lines, significantly reduces system pin count and simplifies board layout compared to parallel memory alternatives. The 24LC1025T-E/SM supports both 100 kHz and 400 kHz clock frequencies, ensuring compatibility with a vast array of microcontrollers and processors.

To manage its high capacity within the I²C protocol's addressing constraints, the device incorporates an innovative two-block memory architecture. It features two selectable memory blocks, each with a capacity of 512K bits. This is managed through the use of a block select bit in the device address word, effectively allowing the IC to respond to two different I²C addresses (0xA0/0xA1 and 0xA2/0xA3). This elegant solution enables seamless access to the entire memory array without complex paging schemes.

The 24LC1025T-E/SM is designed for high reliability and endurance. It supports a minimum of 1,000,000 erase/write cycles per byte and offers exceptional data retention of over 200 years. Housed in a space-saving 8-SOIC (150mil) package, it is well-suited for compact and portable electronic designs. Furthermore, it features hardware write-protection via a dedicated pin, safeguarding critical memory contents from inadvertent modification.

Operating across an extensive voltage range of 1.7V to 5.5V, this EEPROM is perfect for both 5V and low-voltage 3.3V systems, extending its usability from industrial equipment to battery-powered consumer electronics. Its low power consumption further enhances its appeal for power-sensitive applications.

ICGOOODFIND: The Microchip 24LC1025T-E/SM stands out as a highly reliable, high-density, and easily integrable non-volatile memory solution. Its combination of a large 1024Kbit capacity, standard I²C interface, and robust performance characteristics makes it an excellent choice for designers seeking efficient data storage.

Keywords: I²C Interface, Serial EEPROM, 1024Kbit, Non-Volatile Memory, Low-Power