64 Mbit NOR Flash with a wide temperature range
It communicates over a SPI interface with Quad I/O and QPI protocol support, clocked at up to 108 MHz.
108 MHz Quad SPI — what it means for read throughput
At 108 MHz in Quad I/O mode, this part delivers four bits per clock cycle on reads. For a typical firmware shadowing or execute-in-place (XIP) application, that translates to a sustained throughput well above what a standard SPI NOR at the same clock can manage. The QPI mode reduces the initial command overhead by keeping the address and data on the same four lines, which tightens the latency for random reads. If your MCU's QSPI controller supports it, the S25FL064LABBHN033 will keep the instruction fetch bus fed without wait states on most Cortex-M class cores.
Package and mounting considerations for the 24-ball BGA
The package is surface-mount only. The compact footprint saves board area compared to an SOIC-8 or WSON, but the BGA means bottom-side inspection is blind — X-ray after reflow is the only way to confirm ball wetting.
The FL-L series is a current-generation NOR Flash family, so the risk of a sudden discontinuation is low.