ISSI IS25 NOR Flash Memory offers a versatile storage solution with high flexibility and performance in a simplified pin count package. ISSI Flash is for systems that require limited space, a low pin count, and low power consumption. The device is accessed through a 4-wire SPI Interface consisting of a Serial Data Input (SI), Serial Data Output (SO), Serial Clock (SCK), and Chip Enable (CE#) pins. It can also be configured to serve as multi-I/O.