Device identity and headline parametrics
The S25FL256LAGMFV001 is a 256 Mbit NOR Flash memory from Infineon's FL-L series, organized as 32M x 8 bits.
The 16-SOIC footprint is a standard JEDEC outline — the same land pattern serves multiple NOR Flash suppliers, so a board spin for second-sourcing is not required.
Interface speed and protocol
The 133 MHz clock rate applies to the Quad I/O read mode — at that speed the effective throughput is 66 MB/s on a quad-lane bus. The QPI protocol reduces the command overhead by using the I/O pins for both address and data, which improves random-read efficiency over standard SPI.