The Microchip 24LC256T-E/SN: A Benchmark in Serial Memory Storage

In the realm of embedded systems and data storage, reliable non-volatile memory is a cornerstone. The Microchip 24LC256T-E/SN stands out as a premier solution, offering designers a robust and highly versatile 256Kbit serial EEPROM. This chip exemplifies the critical balance of density, simplicity, and power efficiency required in modern electronic design.

Housed in a space-saving 8-lead SOIC package, this memory IC is built for a wide array of applications, from consumer electronics and industrial systems to automotive modules. Its 256Kbit capacity, organized as 32K x 8, provides ample space for storing crucial data such as configuration parameters, calibration constants, and user settings, ensuring they are retained even when main power is disconnected.

A key feature of the 24LC256T-E/SN is its utilization of the I2C (Inter-Integrated Circuit) serial interface. This two-wire communication protocol drastically reduces the number of I/O pins required to connect the memory to a microcontroller, simplifying board layout and freeing up valuable MCU resources for other functions. The device supports a 400 kHz clock speed, enabling efficient data transfer for most applications. Furthermore, it is capable of page write operations up to 64 bytes, allowing for faster data writes when updating large blocks of information.

The device operates over a broad voltage range of 1.7V to 5.5V, making it perfectly suited for both 5V and low-power 3.3V systems. This wide operating voltage, coupled with its low standby current, is ideal for battery-powered and portable devices where power conservation is paramount. Its industrial temperature rating (-40°C to +85°C) ensures reliable performance even in harsh environmental conditions.

Data integrity is a critical design priority, and the 24LC256T-E/SN addresses this with built-in hardware write protection. When the WP (Write Protect) pin is asserted, the entire memory array becomes read-only, safeguarding stored data from accidental overwrites or corruption. The chip also features exceptional endurance, rated for 1 million erase/write cycles per sector, and data retention of over 200 years, guaranteeing long-term reliability.

ICGOODFIND: The Microchip 24LC256T-E/SN is an industry-standard serial EEPROM that delivers a powerful combination of high density, a simple I2C interface, and ultra-low power consumption. Its robust feature set and proven reliability make it an indispensable component for designers seeking a trustworthy non-volatile memory solution across countless applications.

Keywords: I2C Interface, Serial EEPROM, Non-Volatile Memory, Low-Power, Data Retention