The Infineon S25FL032P0XNFB003 is a 32 Mbit serial NOR flash from the FL-P Automotive series, qualified to AEC-Q100 Grade 1. That qualification means the device is characterized and reliability-tested for -40 to +105 °C ambient — the under-hood temperature band where an engine ECU or transmission controller lives. The SPI Quad I/O interface clocks at 104 MHz, delivering enough read throughput for execute-in-place code shadowing or over-the-air firmware update staging. Memory is organized as 4M x 8 bits, byte-addressable through the serial bus. Page write time is 3 ms typical, word write 5 µs — budget these into the firmware update window if the application rewrites large sectors in the field.
Package and board-fit — 8-WSON exposed pad
The 8-WSON (6x8 mm) package with an exposed thermal pad requires a PCB land pattern that connects the pad to a ground plane for heat sinking. The supplier device package is 8-WSON (6x8); the package / case is listed as 8-WDFN Exposed Pad — same footprint, different naming convention. Surface-mount assembly with standard reflow profile. The exposed pad must be soldered to the board — the datasheet's recommended land pattern is the reference for stencil aperture and via placement under the pad.
Obsolete — sourcing reality for a discontinued automotive flash
For a sustainment program that needs this exact AEC-Q100 grade and 8-WSON footprint, the only supply path is the spot market. Quantities are lot-specific and confirmed at RFQ — no blanket stock commitment is possible. The base product number S25FL032 covers multiple speed and package variants; verify the full order code against the BOM line before committing.