256 Mbit NOR flash with a 133 MHz Quad I/O bus
The S25FL256SAGBHVC03 is a 256 Mbit SPI NOR flash from Infineon's FL-S series, organized as 32M x 8 bits. The 133 MHz clock rate on the Quad I/O interface pushes the sustained read throughput well past what a single-bit SPI bus can deliver — useful when the MCU fetches code or logs data in bursts.
Supply rails and temperature grade
The -40°C to 105°C operating range covers the industrial temperature band — suitable for outdoor telecom cabinets, motor drives, and engine-bay electronics where the ambient climbs above 85°C.
24-ball BGA footprint and rework considerations
Packaged in a 24-ball TBGA (8x6 mm body). The 0.80 mm ball pitch is forgiving enough for a standard reflow profile without micro-vias, but the BGA package means the board-side pad finish and stencil aperture matter for solder-joint reliability. Pre-bake at 125°C for 8 hours if the parts have been exposed to ambient humidity beyond the MSL floor life — the BGA's plastic overmold can trap moisture.
Active lifecycle — no design-in clock ticking
Infineon lists this as an active part. The FL-S series has been a stable NOR flash line for years; the 256 Mbit density at 133 MHz is a common sweet spot for code-shadowing and data-logging applications.