1.8V Serial Flash Serial flash is a small, low-power flash memory that uses a serial interface for sequential data access. Serial flash uses fewer wires than parallel flash memories to transfer data to and from a system. A reduction in board space, power consumption and system cost are some of the benefits of the lower pin count interface for serial flash memories. The 25 Series family... More about this series.3.0V Serial Flash Serial flash is a small, low-power flash memory that uses a serial interface for sequential data access. Serial flash uses fewer wires than parallel flash memories to transfer data to and from a system. A reduction in board space, power consumption and system cost are some of the benefits of the lower pin count interface for serial flash memories. The 25 Series family... More about this series.