The M24C64S-FCU6T/T is a 64-Kbit Serial I2C Memory manufactured by STMicroelectronics. It includes a 1.8V to 5.5V voltage range, 32-Byte page write, and a high-speed I2C interface. The memory is organized as 8192 x 8 bits and can be programmed with up to 144 bytes at once. The device is operated through an I2C bus which has two different slaves: the first one is the main flash memory which can be written directly, while the second one is used to enable read and write operations. It has a hardware write protection option and can be used with a wide number of applications. The memory is designed to be used in smart cards, cameras, consumer electronics, and more.