The AT24C64BN-10SU-2.7-T: A Deep Dive into a 64Kb Serial EEPROM Solution

In the realm of embedded systems and electronic design, reliable non-volatile memory is a cornerstone for storing critical data. The AT24C64BN-10SU-2.7-T from Microchip Technology stands as a prominent and robust solution in this space. This integrated circuit is a 64-kilobit (8,192 x 8) serial Electrically Erasable Programmable Read-Only Memory (EEPROM) that communicates via the ubiquitous I2C (Inter-Integrated Circuit) protocol.

A key defining feature of this specific model is its 2.7V to 5.5V wide voltage operation, signified by the "-2.7" in its part number. This low-voltage capability makes it exceptionally well-suited for battery-powered and portable applications where power efficiency is paramount. It can reliably operate from a single power supply throughout this range, ensuring data integrity even as a battery discharges. The device is further characterized by its 10MHz clock frequency ("-10SU"), supporting high-speed data transfer.

The use of the I2C bus is a significant advantage, requiring only two bidirectional open-drain lines: Serial Data (SDA) and Serial Clock (SCL). This drastically reduces the number of GPIO pins required on a microcontroller, simplifying board layout and minimizing component count. The AT24C64BN-10SU-2.7-T also features a page write buffer of 32 bytes, allowing for more efficient writing of sequential data. For data protection, it includes hardware write-protection functionality, safeguarding memory contents from unintended corruption.

Housed in an 8-lead SOIC package, it offers a compact footprint for space-constrained PCB designs. Its endurance is specified at 1 million write cycles, and data retention can last for over 100 years, providing designers with confidence in its long-term reliability. Typical applications range from storing system parameters and user settings to data logging in a vast array of products, including medical devices, industrial controls, smart meters, and consumer electronics.

ICGOODFIND: The AT24C64BN-10SU-2.7-T is a highly optimized memory component, offering an ideal blend of low-power consumption, a simple two-wire interface, and proven reliability, making it a default choice for engineers seeking a robust non-volatile memory solution.

Keywords:

I2C EEPROM

Low-Power Memory

Non-Volatile Storage

Serial Memory Chip

64Kb EEPROM