128 Mbit NOR Flash with Quad-SPI at 108 MHz
It uses a Quad I/O SPI interface clocked at 108 MHz, giving read throughput that supports execute-in-place (XIP) firmware and fast OTA staging.
Obsolete — sourcing through the surplus channel
That means Cypress (now Infineon) has discontinued production and no further last-time-buy windows are open. New designs should not target this order code. The FL-S family has been superseded by newer NOR Flash families; a pin-compatible direct replacement is not listed in the official record, so verify footprint and interface compatibility with any proposed alternate.
24-ball BGA — rework and handling notes
The 24-TBGA package (8 mm x 6 mm body, supplier device package 24-BGA) is a fine-pitch BGA suited for surface-mount assembly. If the original factory reel has been opened past the floor-life window, a bake before reflow is required. The BGA footprint means visual inspection of solder joints is limited; X-ray inspection is the norm for production verification.