The S25FL132K0XMFV043: A pin-compatible drop-in from another vendor is not confirmed here; the board-level fit and timing must be verified against the original BOM.
32 Mbit NOR Flash with Quad I/O at 108 MHz
Organized as 4M x 8, the S25FL132K0XMFV043 stores 32 Mbit of non-volatile memory in NOR Flash technology. The SPI interface supports Quad I/O, meaning four data lines transfer in parallel — the 108 MHz clock yields a theoretical read throughput well above what a single-bit SPI bus can deliver, which matters for fast code shadowing or firmware updates. The page write cycle time is 3 ms — budget this into the firmware update sequence if the application rewrites sectors in the field.