The S25FL512SDSMFB010: The 512 Mbit density suits firmware images with OTA staging, parameter tables, and boot code in a single chip. Quad I/O at 80 MHz delivers enough read throughput to support execute-in-place (XIP) for many real-time control loops without a separate DRAM.
80 MHz clock — timing margin in the SPI bus
At 80 MHz the SPI clock period is 12.5 ns. With Quad I/O, each clock edge transfers four bits, so the sustained read rate reaches about 40 MB/s. The 16-SOIC wide-body package keeps trace inductance low, but the layout should keep the SPI clock line unterminated runs under 50 mm to avoid reflections at this edge rate.
Package and rework — 16-SOIC wide body
The 16-SOIC (0.295", 7.50 mm width) is a standard wide-body SOIC footprint. It is hand-solderable and rework-friendly.
The AEC-Q100 qualification and ROHS3 compliance are current.