133 MHz Quad-SPI — what the clock rate buys you
At 133 MHz in Quad I/O mode, the S25FL512SAGBHIA13 can sustain read rates well above 50 MB/s with the right controller. That matters when the MCU or SoC boots directly from this Flash (XiP) — the CPU doesn't stall waiting for code fetches. For data-logging applications, the high clock rate reduces the time the bus is occupied, freeing the SPI peripheral for other tasks. The 133 MHz rating is the maximum; real throughput depends on the host's SPI timing and the number of wait states programmed, but the headroom is there for designs that need fast readback.
Package reality — 24-BGA reflow and inspection notes
The 24-TBGA package measures 8x6 mm with a 0.8 mm ball pitch. That's a fine-pitch BGA but not ultra-fine — standard SMT reflow profiles work, and X-ray inspection is advisable to catch head-in-pillow or voiding under the balls. The supplier device package is 24-BGA (8x6), so the footprint is consistent across the FL-S family.