256 Mbit SPI Quad I/O NOR Flash at 133 MHz
The S25FL256SAGMFI011: It communicates over a Quad I/O SPI interface at a clock frequency of 133 MHz, giving the system fast read throughput for code shadowing, execute-in-place (XIP) boot images, or data logging in embedded designs.
The 133 MHz SPI clock with Quad I/O support reads four data lines at 133 MHz.
The base product number S25FL256 covers a family of density and package variants; the specific suffix identifies the 16-SOIC, industrial-temperature, tube-shipped version.
16-SOIC footprint — rework and layout notes
No exposed thermal pad, so standard SOIC land pattern with a single ground via per pin is sufficient.