133 MHz and Quad I/O — the throughput angle
At 133 MHz, a Quad I/O read delivers about 66 MB/s in fast-read mode. That is enough to feed a Cortex-M7 or a mid-range application processor without stalling the instruction bus. If your design currently runs a standard SPI NOR at 50 MHz, swapping to this part nearly triples the read bandwidth without changing the protocol layer — just the command set.
For a NOR Flash that is often the code-storage device, lifecycle stability matters — a sudden EOL would require firmware migration and board re-spin.
Package and temperature — layout and environment
The 16-SOIC package is a wide-body (7.50 mm width) surface-mount footprint.