256Mbit NOR flash in a 16-SOIC footprint
The S25FL256LAGMFM000 is a 256Mbit SPI NOR flash organized as 32M x 8 bits. It uses the Quad I/O and QPI interface to deliver up to 133 MHz clock frequency, which translates to a sustained read throughput that keeps an automotive-grade Cortex-M or RISC-V application processor fed during XIP execution. Packaged in a 16-SOIC wide-body (0.295", 7.50 mm width) and surface-mount, this footprint matches the industry-standard NOR flash layout used across engine-control and body-domain ECUs. No board respin is required when migrating from a 105°C-rated sibling like the S25FL256LAGNFM010 — the die and interface are identical; the only difference is the upper temperature limit. Supply voltage is 2.7 V to 3.6 V, which lets it run directly off a 3.3 V rail without an intermediate LDO. The operating temperature range spans -40°C to +125°C, placing it firmly in the AEC-Q100 Grade 1 band — suitable for underhood and engine-bay environments where ambient temperatures exceed 105°C.
Active lifecycle, AEC-Q100 compliance, and sourcing posture
Infineon lists the S25FL256LAGMFM000 as Active (current production) with ROHS3 compliance. The part carries the AEC-Q100 automotive qualification — the grade is implicit in the 125°C operating range, which maps to Grade 1. This means the device ships with the PPAP documentation and reliability data that an OEM auditor expects for safety-relevant or mission-critical ECUs. Because it is an active, qualified part, it is available through authorized distribution and independent channels. Sourcing is quoted to order against the BOM quantity; availability and current pricing are confirmed at RFQ time.