256 Mbit NOR Flash in a 24-BGA footprint
The package is a 24-ball BGA, 8x6 mm body, surface-mount only.
Obsolete — no official successor listed
The evidence does not list an official replacement order code, so a direct pin-compatible drop-in from the manufacturer is not confirmed.
What the 133 MHz Quad I/O means for the design
That matters if the MCU or FPGA boots directly from this Flash — the code fetch does not stall the core. The Quad I/O also reduces the pin count compared to a parallel NOR, keeping the BGA ball count at 24. The 256 Mbit density is sized for a firmware image plus a small file system or configuration data area; it is not a bulk data-logging part.
The 24-BGA (8x6 mm) package is a fine-pitch ball array; the PCB layout needs a solder-mask-defined pad and x-ray inspection after reflow.