The Cypress S25FL256LAGNFI010 is a 256 Mbit NOR Flash memory in the FL-L series, organized as 32 M x 8 bits. It communicates over a SPI interface supporting Quad I/O and QPI protocols at a clock frequency up to 133 MHz, which gives it the read throughput needed for execute-in-place firmware and fast OTA staging in embedded systems.
133 MHz Quad-SPI — what the clock speed buys you
At 133 MHz the Quad-SPI interface delivers a sustained read rate that keeps a Cortex-M or RISC-V core fed without wait states for code fetch, as long as the flash latency is accounted for in the memory controller setup. The Quad I/O mode uses four data lines, so the effective throughput is roughly four times that of a single-bit SPI at the same clock — meaningful for boot time and firmware image loading. The QPI mode further reduces command overhead by encoding opcodes on the quad bus, which helps in random-read scenarios.
Package and footprint — 8-WSON with exposed pad
The device comes in an 8-WDFN package with an exposed pad (supplier package 8-WSON, 6x8 mm). The package is surface-mount only; the Tray shipping medium is the factory delivery format, not a selection parameter.
ROHS3 compliance is confirmed, so it passes the standard restriction-of-hazardous-substances screening for European and most global markets.