64 Mbit NOR flash with Quad-SPI — what the 108 MHz clock buys you
The Infineon S25FL064LABMFN013 is a 64 Mbit FLASH - NOR memory from the FL-L series, organized as 8M x 8 and accessed through an SPI interface that supports Quad I/O and QPI protocols. The 108 MHz clock rate on the Quad-SPI bus delivers read throughput that keeps a Cortex-M or RISC-V core fed during execute-in-place (XIP) operation — the flash doesn't become the bottleneck. Supply range is 2.7V to 3.6V, which maps cleanly onto a 3.3V rail with margin for ripple and cold-crank droop.
The 8-SOIC package (0.209" width, 5.30 mm body) is a common footprint for serial NOR flash; the surface-mount SOIC-8 is straightforward to reflow and inspect, and the package is widely second-sourced across the industry.
Listed as Active — Infineon has not issued an EOL notice or last-time-buy window for this order code. For volume BOM lines, the FL-L series offers density and package variants that share the same SPI command set, so a drop-in migration to a higher or lower density (e.g., 32 Mbit or 128 Mbit) within the family is straightforward without firmware changes.