The MX25L6433FMI-08G/TUBE is a Flash memory IC made by Macronix International. It is a 64 megabit, 3V single voltage flash memory with SPI (Serial Peripheral Interface) and Dual/Quad I/O support. The device features 8 megabytes of capacity (8388608 bytes) organized as 131072 x 64 bits, and is offered in a small 8-pin TSSOP (Thin Shrink Small Outline Package). It has an access time of 55ns with clock frequency of up to 133MHz. The MX25L6433FMI-08G/TUBE offers a wide range of features such as block-erase, sector-erase, and byte-program operations, hardware write-protection, content-protection, and security register. It is suitable for use in various applications such as boot code storage, firmware storage, data loggers, etc.