512 Mbit NOR Flash in a 24-BGA — the FL-S series workhorse
It uses a SPI interface with Quad I/O support, clocked at 66 MHz, which gives a practical read throughput around 33 MB/s in Quad mode — enough for fast boot images or code shadowing in an embedded system.
Package reality: 24-TBGA rework and footprint
This part comes in a 24-ball TBGA (8x6 mm body, 24-BGA package). It's a fine-pitch BGA — not something you hand-solder with a standard iron. The rework profile needs a preheat soak at 125°C to avoid popcorning; The footprint is a 6x8 ball array, and the datasheet's recommended land pattern is the one to follow — don't guess the pad size from the ball pitch alone.