Built-in Laptop Chip Controller IC Chip - MOSFET MXIC MX25L6445E. The MX25L6445E is a 67,108,864-bit serial Flash memory, configured as 8,388,608 x 8 internally. When operating in dual or quad I/O mode, the structure becomes 33,554,432 bits x 2 or 16,777,216 bits x 4. The MX25L6445E features a serial peripheral interface and software protocol that allows operation via a simple 3-wire bus. The three signals of the interface are: clock input (SCLK), serial data input (SI), and serial data output (SO). Serial access to the device is activated with the CS# input. The MX25L6445E memory offers high performance in read operations, capable of locking addresses and data on both rising and falling edges of the clock. Using this feature, data throughput can be doubled. Additionally, performance can reach direct code execution, reducing system RAM size and cost-effectively operating the system.