It is a non-volatile memory device meant for code shadowing, execute-in-place (XIP) firmware, and data logging in embedded systems where the MCU or FPGA boots from serial Flash.
133 MHz Quad-SPI — what the clock rate means for read throughput
The 133 MHz SPI clock rate, combined with the Quad I/O interface (four data lines), gives a theoretical peak read throughput of 532 Mbps (133 MHz × 4). In practice, the controller overhead and command overhead reduce that, but it still supports fast code fetch for Cortex-M and RISC-V cores running at moderate clock speeds. If the host MCU's QSPI peripheral tops out at 104 MHz, the part still runs at that lower speed — the 133 MHz rating just means the Flash itself is not the bottleneck.
24-ball BGA (6x8 mm) — footprint and assembly notes
The Tray shipping medium means the parts are delivered in antistatic trays, not tape-and-reel, so pick-and-place feeders need a tray feeder or manual loading.
That means Infineon continues to manufacture and support the part, with no announced last-time-buy or discontinuation.