The Cypress S25FL116K0XMFV043 is a 16 Mbit NOR Flash memory from the FL1-K series, organized as 2M x 8. The 2.7 V to 3.6 V supply range and -40 °C to 105 °C operating temperature make it a fit for industrial and outdoor equipment where code shadowing or configuration storage is needed.
Obsolete — sourcing reality for this BOM line
108 MHz clock and Quad I/O — what it means for throughput
The 108 MHz clock rate with Quad I/O gives this part a practical read throughput well above single-SPI parts at the same frequency. For a 16 Mbit device, that matters when the host MCU boots from Flash or executes code-in-place — the Quad I/O cuts the number of instruction-fetch cycles, reducing wait states.